Articles | Volume 10, issue 6
https://doi.org/10.5194/se-10-1937-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-10-1937-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
12 Nov 2019
Research article |
| 12 Nov 2019
| 12 Nov 2019
Lithospheric image of the Central Iberian Zone (Iberian Massif) using global-phase seismic interferometry
Institute of Earth Science Jaume Almera (ICTJA), 08028, Barcelona,
Spain
Department of Geology, University of Salamanca, 37008, Salamanca,
Spain
Deyan Draganov
Department of Geoscience and Engineering, Delft University of
Technology, Stevinweg 1, 2628 CN Delft, the Netherlands
Martin Schimmel
Institute of Earth Science Jaume Almera (ICTJA), 08028, Barcelona,
Spain
Puy Ayarza
Department of Geology, University of Salamanca, 37008, Salamanca,
Spain
Imma Palomeras
Department of Geology, University of Salamanca, 37008, Salamanca,
Spain
Mario Ruiz
Institute of Earth Science Jaume Almera (ICTJA), 08028, Barcelona,
Spain
Ramon Carbonell
Institute of Earth Science Jaume Almera (ICTJA), 08028, Barcelona,
Spain
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Puy Ayarza, José Ramón Martínez Catalán, Ana Martínez García, Juan Alcalde, Juvenal Andrés, José Fernando Simancas, Immaculada Palomeras, David Martí, Irene DeFelipe, Chris Juhlin, and Ramón Carbonell
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Vertical incidence seismic profiling on the Iberian Massif images a mid-crustal-scale discontinuity at the top of the reflective lower crust. This feature shows that upper- and lower-crustal reflections merge into it, suggesting that it has often behaved as a detachment. The orogen-scale extension of this discontinuity, present in Gondwanan and Avalonian affinity terranes into the Iberian Massif, demonstrates its relevance, leading us to interpret it as the Conrad discontinuity.
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We assess the capability of multiple methods based on the interpretation of seismic noise to map the basement of the Cerdanya Basin, located in the eastern Pyrenees. Basement depth estimations retrieved from the different approaches are consistent, with maximum depths reaching 700 m close to the Têt fault bounding the basin to the east. Our results prove that seismic noise analysis using high-density networks is an excellent tool to improve the geological characterization of sedimentary basins.
Juan Alcalde, Ramon Carbonell, Solveig Pospiech, Alba Gil, Liam A. Bullock, and Fernando Tornos
Solid Earth, 13, 1161–1168, https://doi.org/10.5194/se-13-1161-2022, https://doi.org/10.5194/se-13-1161-2022, 2022
Michal Chamarczuk, Michal Malinowski, Deyan Draganov, Emilia Koivisto, Suvi Heinonen, and Sanna Rötsä
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In passive seismic measurement, all noise sources from the environment, such as traffic, vibrations caused by distant excavation, and explosive work from underground mines, are utilized. In the Kylylahti experiment, receivers recorded ambient noise sources for 30 d. These recordings were subjected to data analysis and processing using novel methodology developed in our study and used for imaging the subsurface geology of the Kylylahti mine area.
Puy Ayarza, José Ramón Martínez Catalán, Ana Martínez García, Juan Alcalde, Juvenal Andrés, José Fernando Simancas, Immaculada Palomeras, David Martí, Irene DeFelipe, Chris Juhlin, and Ramón Carbonell
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Irene DeFelipe, Juan Alcalde, Monika Ivandic, David Martí, Mario Ruiz, Ignacio Marzán, Jordi Diaz, Puy Ayarza, Imma Palomeras, Jose-Luis Fernandez-Turiel, Cecilia Molina, Isabel Bernal, Larry Brown, Roland Roberts, and Ramon Carbonell
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A detailed knowledge of the very shallow subsurface has become of crucial interest for modern society, especially if it hosts critical surface infrastructures such as temporary waste storage sites. The use of indirect methods to characterize the internal structure of the subsurface has been successfully applied, based on the 3-D distribution of seismic velocities and well-log data, which are of great interest for civil engineering companies.
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Subject area: Crustal structure and composition | Editorial team: Seismics, seismology, paleoseismology, geoelectrics, and electromagnetics | Discipline: Seismology
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Reference seismic crustal model of the Dinarides
The impact of seismic noise produced by wind turbines on seismic borehole measurements
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Mapping the basement of the Cerdanya Basin (eastern Pyrenees) using seismic ambient noise
Constraints on fracture distribution in the Los Humeros geothermal field from beamforming of ambient seismic noise
Radial anisotropy and S-wave velocity depict the internal to external zone transition within the Variscan orogen (NW Iberia)
Distributed acoustic sensing as a tool for subsurface mapping and seismic event monitoring: a proof of concept
Seismic monitoring of the STIMTEC hydraulic stimulation experiment in anisotropic metamorphic gneiss
One-dimensional velocity structure modeling of the Earth's crust in the northwestern Dinarides
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3D crustal structure of the Ligurian Basin revealed by surface wave tomography using ocean bottom seismometer data
Elastic anisotropies of deformed upper crustal rocks in the Alps
A revised image of the instrumental seismicity in the Lodi area (Po Plain, Italy)
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Relocation of earthquakes in the southern and eastern Alps (Austria, Italy) recorded by the dense, temporary SWATH-D network using a Markov chain Monte Carlo inversion
Seismic noise variability as an indicator of urban mobility during the COVID-19 pandemic in the Santiago metropolitan region, Chile
Transversely isotropic lower crust of Variscan central Europe imaged by ambient noise tomography of the Bohemian Massif
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In this manuscript, we investigate the complexity of the upper-crustal block of the Central Anatolia region, Türkiye. We present the results of seismic attenuation by examining 1509 local earthquakes recorded at 72 broadband stations and deployed within the framework of a passive seismic experiment. We emphasize the detailed 2D maps of intrinsic and scattering attenuation within the area where two devastating earthquakes (M1 7.8 and M1 7.5 Kahramanmaraş Earthquake Sequence) happened in 2023.
Ángela María Gómez-García, Álvaro González, Mauro Cacace, Magdalena Scheck-Wenderoth, and Gaspar Monsalve
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We compute a realistic three-dimensional model of the temperatures down to 75 km deep within the Earth, below the Caribbean Sea and northwestern South America. Using this, we estimate at which rock temperatures past earthquakes nucleated in the region and find that they agree with those derived from laboratory experiments of rock friction. We also analyse how the thermal state of the system affects the spatial distribution of seismicity in this region.
Chenyang Li, Yu Duan, Ying Han, Zining Yu, Chengquan Chi, and Dewang Zhang
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This study advances the field of earthquake prediction through the introduction of a novel pre-earthquake anomaly extraction method based on a graph wavelet network structure. We believe that our study makes a significant contribution to the literature because it not only demonstrates the efficacy of this innovative approach in integrating borehole strain data from multiple stations but also sheds light on distinct temporal and spatial correlations preceding seismic events.
Katarina Zailac, Bojan Matoš, Igor Vlahović, and Josip Stipčević
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Presently there is no complete crustal model of the Dinarides. Using the compilations of previous studies, we have created vertically and laterally varying crustal models defined on a regular grid for the wider area of the Dinarides, also covering parts of the Adriatic Sea and the SW part of the Pannonian Basin. In addition to the seismic velocities and density, we also defined three interfaces: sedimentary deposit bottom, carbonate rock thickness and crustal thickness.
Fabian Limberger, Georg Rümpker, Michael Lindenfeld, and Hagen Deckert
Solid Earth, 14, 859–869, https://doi.org/10.5194/se-14-859-2023, https://doi.org/10.5194/se-14-859-2023, 2023
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Wind turbines that are located close to a seismometer produce ground tremors that can increase the noise level at the seismic station. Using numerical models, we analyse the effectivity of borehole installations to reduce this impact. We study effects of geophysical parameters on the borehole effectivity and validate our modelling approach with data from real boreholes. Boreholes are effective in reducing the impact of wind turbines; however, this depends on the wavelength of the seismic wave.
Laura A. Ermert, Enrique Cabral-Cano, Estelle Chaussard, Darío Solano-Rojas, Luis Quintanar, Diana Morales Padilla, Enrique A. Fernández-Torres, and Marine A. Denolle
Solid Earth, 14, 529–549, https://doi.org/10.5194/se-14-529-2023, https://doi.org/10.5194/se-14-529-2023, 2023
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Mexico City is built on a unique ground containing the clay-rich sediments of the ancient lake Texcoco. Continuous imperceptible shaking of these deposits by city traffic and other sources allows us to monitor changes in the subsurface seismic wave speed. Wave speed varies seasonally, likely due to temperature and rain effects; it temporarily drops after large earthquakes then starts to recover. Throughout the studied period, it increased on average, which may be related to soil compaction.
Laura Anna Ermert, Maria Koroni, and Naiara Korta Martiartu
Solid Earth, 14, 485–498, https://doi.org/10.5194/se-14-485-2023, https://doi.org/10.5194/se-14-485-2023, 2023
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We investigate women's representation in seismology to raise awareness of existing gender disparities.
By analysing the authorship of peer-reviewed articles, we identify lower representation of women among single authors, high-impact authors, and highly productive authors. Seismology continues to be a male-dominated field, and trends suggest that parity is decades away. These gaps are an obstacle to women’s career advancement and, if neglected, may perpetuate the leaky-pipeline problem.
Jordi Díaz, Sergi Ventosa, Martin Schimmel, Mario Ruiz, Albert Macau, Anna Gabàs, David Martí, Özgenç Akin, and Jaume Vergés
Solid Earth, 14, 499–514, https://doi.org/10.5194/se-14-499-2023, https://doi.org/10.5194/se-14-499-2023, 2023
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We assess the capability of multiple methods based on the interpretation of seismic noise to map the basement of the Cerdanya Basin, located in the eastern Pyrenees. Basement depth estimations retrieved from the different approaches are consistent, with maximum depths reaching 700 m close to the Têt fault bounding the basin to the east. Our results prove that seismic noise analysis using high-density networks is an excellent tool to improve the geological characterization of sedimentary basins.
Heather Kennedy, Katrin Löer, and Amy Gilligan
Solid Earth, 13, 1843–1858, https://doi.org/10.5194/se-13-1843-2022, https://doi.org/10.5194/se-13-1843-2022, 2022
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The energy transition is an important topic for benefiting the future; thus renewable energy is required to reach net-zero carbon emission goals. Geothermal energy, heat from the ground, can be used in this transition. Therefore, geothermal fields need to be characterized as much as possible to allow for increased productivity within these fields. This study involves and looks at potential fractures within a geothermal field at depth to help increase the overall understanding of this field.
Jorge Acevedo, Gabriela Fernández-Viejo, Sergio Llana-Fúnez, Carlos López-Fernández, Javier Olona, and Diego Pérez-Millán
Solid Earth, 13, 659–679, https://doi.org/10.5194/se-13-659-2022, https://doi.org/10.5194/se-13-659-2022, 2022
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The NW Iberian Peninsula provides one of the most complete Variscan sections in Europe, showing the transition between a sedimentary domain with folds and thrust and a metamorphic domain with igneous intrusions. By processing the seismic ambient noise recorded by several seismograph networks in this area, new 3-D S-wave velocity and radial anisotropy models were created. These models reveal the limit between the two domains, delineating the core of the large western European Variscan Belt.
Nicola Piana Agostinetti, Alberto Villa, and Gilberto Saccorotti
Solid Earth, 13, 449–468, https://doi.org/10.5194/se-13-449-2022, https://doi.org/10.5194/se-13-449-2022, 2022
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Sensing the Earth is a fundamental operation for the future where georesources, like geothermal energy and CO2 underground storage, will become important tools for addressing societal challenges. The development of networks of optical fibre cables gives the possibility of a sensing grid with an unprecedented spatial coverage. Here, we investigate the potential of using portions of a optical fibre cable as a standard seismometer for exploring the subsurface and monitoring georesources.
Carolin M. Boese, Grzegorz Kwiatek, Thomas Fischer, Katrin Plenkers, Juliane Starke, Felix Blümle, Christoph Janssen, and Georg Dresen
Solid Earth, 13, 323–346, https://doi.org/10.5194/se-13-323-2022, https://doi.org/10.5194/se-13-323-2022, 2022
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Hydraulic stimulation experiments in underground facilities allow for placing monitoring equipment close to and surrounding the stimulated rock under realistic and complex conditions at depth. We evaluate how accurately the direction-dependent velocity must be known for high-resolution seismic monitoring during stimulation. Induced transient deformation in rocks only 2.5–5 m apart may differ significantly in magnitude and style, and monitoring requires sensitive sensors adapted to the frequency.
Gregor Rajh, Josip Stipčević, Mladen Živčić, Marijan Herak, Andrej Gosar, and the AlpArray Working Group
Solid Earth, 13, 177–203, https://doi.org/10.5194/se-13-177-2022, https://doi.org/10.5194/se-13-177-2022, 2022
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We investigated the 1-D velocity structure of the Earth's crust in the NW Dinarides with inversion of arrival times from earthquakes. The obtained velocity models give a better insight into the crustal structure and show velocity variations among different parts of the study area. In addition to general structural implications and a potential for improving further work, the results of our study can also be used for routine earthquake location and for detecting errors in seismological bulletins.
Guido Maria Adinolfi, Raffaella De Matteis, Rita de Nardis, and Aldo Zollo
Solid Earth, 13, 65–83, https://doi.org/10.5194/se-13-65-2022, https://doi.org/10.5194/se-13-65-2022, 2022
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We propose a methodology useful to evaluate (1) the reliability of a focal mechanism solution inferred by the inversion of seismological data and (2) the performance of a seismic network, operated to monitor natural or induced seismicity, to assess focal mechanism solutions. As a test case, we studied the focal mechanism reliability by using synthetic data computed for ISNet, a local seismic network monitoring the Irpinia fault system (southern Italy).
Nicola Piana Agostinetti and Giulia Sgattoni
Solid Earth, 12, 2717–2733, https://doi.org/10.5194/se-12-2717-2021, https://doi.org/10.5194/se-12-2717-2021, 2021
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One of the present-day challenges for geoscientists is tackling the big data revolution. An ever-growing amount of data needs to be processed and data are subjectively handled before using them to make inferences on the Earth’s interior. But imposing subjective decisions on the data might have strong influences on the final outputs. Here we present a totally novel and automatic application for screening the data and for defining data volumes that are consistent with physical hypotheses.
Felix N. Wolf, Dietrich Lange, Anke Dannowski, Martin Thorwart, Wayne Crawford, Lars Wiesenberg, Ingo Grevemeyer, Heidrun Kopp, and the AlpArray Working Group
Solid Earth, 12, 2597–2613, https://doi.org/10.5194/se-12-2597-2021, https://doi.org/10.5194/se-12-2597-2021, 2021
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The Ligurian Sea opened ~30–15 Ma during SE migration of the Calabrian subduction zone. Using ambient seismic noise from stations on land and at the ocean bottom, we calculated a 3D shear-velocity model of the Ligurian Basin. In keeping with existing 2D studies, we find a shallow crust–mantle transition at the SW basin centre that deepens towards the northeast, Corsica, and the Liguro-Provençal coast. We observe a separation of SW and NE basins. We do not observe high crustal vP/vS ratios.
Ruth Keppler, Roman Vasin, Michael Stipp, Tomás Lokajícek, Matej Petruzálek, and Nikolaus Froitzheim
Solid Earth, 12, 2303–2326, https://doi.org/10.5194/se-12-2303-2021, https://doi.org/10.5194/se-12-2303-2021, 2021
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Rocks in mountain belts have been deformed during continental collision causing a certain alignment of the minerals referred to as crystallographic preferred orientation (CPO). Minerals have anisotropic properties: the velocity of seismic waves travelling through them is direction dependent. This leads to anisotropy of the rocks. We measured the CPO of common rocks within the Alps. With this data and known anisotropic properties of the minerals we calculated the seismic anisotropy of the rocks.
Laura Peruzza, Alessandra Schibuola, Maria Adelaide Romano, Marco Garbin, Mariangela Guidarelli, Denis Sandron, and Enrico Priolo
Solid Earth, 12, 2021–2039, https://doi.org/10.5194/se-12-2021-2021, https://doi.org/10.5194/se-12-2021-2021, 2021
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In weakly seismic or poorly monitored areas, the uncritical use of earthquake catalogues can be misleading. This is the case for a central sector in the Po Valley, where the Northern Apennines and Southern Alps collide. We collect and reprocess the available instrumental data of about 300 earthquakes from 1951 to 2019. The seismicity is weak, deeper than expected, and far from some existing human activities carried out underground. The potential tectonic causative sources are still unknown.
Fabian Limberger, Michael Lindenfeld, Hagen Deckert, and Georg Rümpker
Solid Earth, 12, 1851–1864, https://doi.org/10.5194/se-12-1851-2021, https://doi.org/10.5194/se-12-1851-2021, 2021
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Frequency-dependent amplitude decays of seismic signals induced by wind turbines are determined from (up to) 6 months of continuous recordings measured along an 8 km profile located at a wind farm in Bavaria, Germany. The radiation pattern and amplitude decay of the induced signals are accounted for by an analytical approach that includes path and source effects. This approach is generalized to predict the characteristic seismic radiation patterns of arbitrary wind farm configurations.
Azam Jozi Najafabadi, Christian Haberland, Trond Ryberg, Vincent F. Verwater, Eline Le Breton, Mark R. Handy, Michael Weber, and the AlpArray and AlpArray SWATH-D working groups
Solid Earth, 12, 1087–1109, https://doi.org/10.5194/se-12-1087-2021, https://doi.org/10.5194/se-12-1087-2021, 2021
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This study achieved high-precision hypocenters of 335 earthquakes (1–4.2 ML) and 1D velocity models of the Southern and Eastern Alps. The general pattern of seismicity reflects head-on convergence of the Adriatic Indenter with the Alpine orogenic crust. The relatively deeper seismicity in the eastern Southern Alps and Giudicarie Belt indicates southward propagation of the Southern Alpine deformation front. The derived hypocenters form excellent data for further seismological studies, e.g., LET.
Javier Ojeda and Sergio Ruiz
Solid Earth, 12, 1075–1085, https://doi.org/10.5194/se-12-1075-2021, https://doi.org/10.5194/se-12-1075-2021, 2021
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In Santiago, Chile, the lockdown imposed due to COVID-19 was recorded by seismological instruments. This analysis shows temporal changes in the surface vibrations controlled by lockdown phases, mobility, and epidemiological factors. Our findings suggest that
dynamic lockdownand the early deconfinement in April 2020 caused an increase in mobility and therefore virus transmission. We propose that seismic networks could be used to monitor urban mobility as a new proxy in public policies.
Jiří Kvapil, Jaroslava Plomerová, Hana Kampfová Exnerová, Vladislav Babuška, György Hetényi, and AlpArray Working Group
Solid Earth, 12, 1051–1074, https://doi.org/10.5194/se-12-1051-2021, https://doi.org/10.5194/se-12-1051-2021, 2021
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This paper presents a high-resolution 3-D shear wave velocity (vS) model of the Bohemian Massif crust imaged from high-density data and enhanced depth sensitivity of tomographic inversion. The dominant features of the model are relatively higher vS in the upper crust than in its surrounding, a distinct intra-crustal interface, and a velocity decrease in the lower part of the crust. The low vS in the lower part of the crust is explained by the anisotropic fabric of the lower crust.
Martijn P. A. van den Ende and Jean-Paul Ampuero
Solid Earth, 12, 915–934, https://doi.org/10.5194/se-12-915-2021, https://doi.org/10.5194/se-12-915-2021, 2021
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Distributed acoustic sensing (DAS) is an emerging technology that measures stretching of an optical-fibre cable. This technology can be used to record the ground shaking of earthquakes, which offers a cost-efficient alternative to conventional seismometers. Since DAS is relatively new, we need to verify that existing seismological methods can be applied to this new data type. In this study, we reveal several issues by comparing DAS with conventional seismometer data for earthquake localisation.
Mohammed Bello, David G. Cornwell, Nicholas Rawlinson, Anya M. Reading, and Othaniel K. Likkason
Solid Earth, 12, 463–481, https://doi.org/10.5194/se-12-463-2021, https://doi.org/10.5194/se-12-463-2021, 2021
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In this study, ground motion caused by distant earthquakes recorded in southeast Australia is used to image the structure of the crust and underlying mantle. This part of the Australian continent was assembled over the last 500 million years, but it remains poorly understood. By studying variations in crustal properties and thickness, we find evidence for the presence of an old microcontinent that is embedded in the younger terrane and forms a connection between Victoria and Tasmania.
Kasper van Wijk, Calum J. Chamberlain, Thomas Lecocq, and Koen Van Noten
Solid Earth, 12, 363–373, https://doi.org/10.5194/se-12-363-2021, https://doi.org/10.5194/se-12-363-2021, 2021
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The Auckland Volcanic Field is monitored by a seismic network. The lockdown measures to combat COVID-19 in New Zealand provided an opportunity to evaluate the performance of seismic stations in the network and to search for small(er) local earthquakes, potentially hidden in the noise during "normal" times. Cross-correlation of template events resulted in detection of 30 new events not detected by GeoNet, but there is no evidence of an increase in detections during the quiet period of lockdown.
Janneke van Ginkel, Elmer Ruigrok, and Rien Herber
Solid Earth, 11, 2015–2030, https://doi.org/10.5194/se-11-2015-2020, https://doi.org/10.5194/se-11-2015-2020, 2020
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Knowledge of subsurface velocities is key to understand how earthquake waves travel through the Earth. We present a method to construct velocity profiles for the upper sediment layer on top of the Groningen field, the Netherlands. Here, the soft-sediment layer causes resonance of seismic waves, and this resonance is used to compute velocities from. Recordings from large earthquakes and the background noise signals are used to derive reliable velocities for the deep sedimentary layer.
Ehsan Qorbani, Dimitri Zigone, Mark R. Handy, Götz Bokelmann, and AlpArray-EASI working group
Solid Earth, 11, 1947–1968, https://doi.org/10.5194/se-11-1947-2020, https://doi.org/10.5194/se-11-1947-2020, 2020
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The crustal structure of the Eastern and Southern Alps is complex. Although several seismological studies have targeted the crust, the velocity structure under this area is still not fully understood. Here we study the crustal velocity structure using seismic ambient noise tomography. Our high-resolution models image several velocity anomalies and contrasts and reveal details of the crustal structure. We discuss our new models of the crust with respect to the geologic and tectonic features.
Laura Ermert, Jonas Igel, Korbinian Sager, Eléonore Stutzmann, Tarje Nissen-Meyer, and Andreas Fichtner
Solid Earth, 11, 1597–1615, https://doi.org/10.5194/se-11-1597-2020, https://doi.org/10.5194/se-11-1597-2020, 2020
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We present an open-source tool to model ambient seismic auto- and cross-correlations with spatially varying source spectra. The modeling is based on pre-computed databases of seismic wave propagation, which can be obtained from public data providers. The aim of this tool is to facilitate the modeling of ambient noise correlations, which are an important seismologic observable, with realistic wave propagation physics. We present a description and benchmark along with example use cases.
Ben Moseley, Tarje Nissen-Meyer, and Andrew Markham
Solid Earth, 11, 1527–1549, https://doi.org/10.5194/se-11-1527-2020, https://doi.org/10.5194/se-11-1527-2020, 2020
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Simulations of seismic waves are very important; they allow us to understand how earthquakes spread and how the interior of the Earth is structured. However, whilst powerful, existing simulation methods usually require a large amount of computational power and time to run. In this research, we use modern machine learning techniques to accelerate these calculations inside complex models of the Earth.
Antonio Villaseñor, Robert B. Herrmann, Beatriz Gaite, and Arantza Ugalde
Solid Earth, 11, 63–74, https://doi.org/10.5194/se-11-63-2020, https://doi.org/10.5194/se-11-63-2020, 2020
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We present new earthquake focal depths and fault orientations for earthquakes that occurred in 2013 in the vicinity of an underground gas storage off the east coast of Spain. Our focal depths are in the range of 5–10 km, notably deeper than the depth of the gas injection (2 km). The obtained fault orientations also differ from the predominant faults at shallow depths. This suggests that the faults reactivated are deeper, previously unmapped faults occurring beneath the sedimentary layers.
Marisol Monterrubio-Velasco, F. Ramón Zúñiga, José Carlos Carrasco-Jiménez, Víctor Márquez-Ramírez, and Josep de la Puente
Solid Earth, 10, 1519–1540, https://doi.org/10.5194/se-10-1519-2019, https://doi.org/10.5194/se-10-1519-2019, 2019
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Earthquake aftershocks display spatiotemporal correlations arising from their self-organized critical behavior. Stochastical models such as the fiber bundle (FBM) permit the use of an analog of the physical model that produces a statistical behavior with many similarities to real series. In this work, a new model based on FBM that includes geometrical faults systems is proposed. Our analysis focuses on aftershock statistics, and as a study case we modeled the Northridge sequence.
Chisheng Wang, Junzhuo Ke, Jincheng Jiang, Min Lu, Wenqun Xiu, Peng Liu, and Qingquan Li
Solid Earth, 10, 1397–1407, https://doi.org/10.5194/se-10-1397-2019, https://doi.org/10.5194/se-10-1397-2019, 2019
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The point cloud of located aftershocks contains the information which can directly reveal the fault geometry and temporal evolution of an earthquake sequence. However, there is a lack of studies using state-of-the-art visual analytics methods to explore the data to discover hidden information about the earthquake fault. We present a novel interactive approach to illustrate 3-D aftershock point clouds, which can help the seismologist to better understand the complex fault system.
Michael Behm, Feng Cheng, Anna Patterson, and Gerilyn S. Soreghan
Solid Earth, 10, 1337–1354, https://doi.org/10.5194/se-10-1337-2019, https://doi.org/10.5194/se-10-1337-2019, 2019
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New acquisition styles for active seismic source exploration provide a wealth of additional quasi-passive data. We show how these data can be used to gain complementary information about the subsurface. Specifically, we process an active-source dataset from an alpine valley in western Colorado with both active and passive inversion schemes. The results provide new insights on subsurface hydrology based on the ratio of P-wave and S-wave velocity structures.
Joeri Brackenhoff, Jan Thorbecke, and Kees Wapenaar
Solid Earth, 10, 1301–1319, https://doi.org/10.5194/se-10-1301-2019, https://doi.org/10.5194/se-10-1301-2019, 2019
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Earthquakes in the subsurface are hard to monitor due to their complicated signals. We aim to make the monitoring of the subsurface possible by redatuming the sources and the receivers from the surface of the Earth to the subsurface to monitor earthquakes originating from small faults in the subsurface. By using several sources together, we create complex earthquake signals for large-scale faults sources.
Peter Klin, Giovanna Laurenzano, Maria Adelaide Romano, Enrico Priolo, and Luca Martelli
Solid Earth, 10, 931–949, https://doi.org/10.5194/se-10-931-2019, https://doi.org/10.5194/se-10-931-2019, 2019
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Using geological and geophysical data, we set up a 3-D digital description of the underground structure in the central part of the Po alluvial plain. By means of computer-simulated propagation of seismic waves, we were able to identify the structural features that caused the unexpected elongation and amplification of the earthquake ground motion that was observed in the area during the 2012 seismic crisis. The study permits a deeper understanding of the seismic hazard in alluvial basins.
Andrew J. Calvert and Michael P. Doublier
Solid Earth, 10, 637–645, https://doi.org/10.5194/se-10-637-2019, https://doi.org/10.5194/se-10-637-2019, 2019
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Deep (> 40 km) seismic reflection surveys are acquired on land along crooked roads. Using the varying azimuth between source and receiver, the true 3-D orientation of crustal structures can be determined. Applying this method to a survey over the ancient Australian Yilgarn Craton reveals that most reflectors in the lower crust exhibit a systematic dip perpendicular to those in the overlying crust, consistent with lateral flow of a weak lower crust in the hotter early Earth 2.7 billion years ago.
Ruth A. Beckel and Christopher Juhlin
Solid Earth, 10, 581–598, https://doi.org/10.5194/se-10-581-2019, https://doi.org/10.5194/se-10-581-2019, 2019
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Scandinavia is crossed by extensive fault scarps that have likely been caused by huge earthquakes when the ice sheets of the last glacial melted. Due to the inaccessibility of the terrain, reflection seismic data have to be collected along crooked lines, which reduces the imaging quality unless special corrections are applied. We developed a new correction method that is very tolerant to noise and used it to improve the reflection image of such a fault and refine its geological interpretation.
Kees Wapenaar, Joeri Brackenhoff, and Jan Thorbecke
Solid Earth, 10, 517–536, https://doi.org/10.5194/se-10-517-2019, https://doi.org/10.5194/se-10-517-2019, 2019
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The earthquake seismology and seismic exploration communities have developed a variety of seismic imaging methods for passive- and active-source data. Despite the seemingly different approaches and underlying principles, many of these methods are based in some way or another on the same mathematical theorem. Starting with this theorem, we discuss a variety of classical and recent seismic imaging methods in a systematic way and explain their similarities and differences.
George Taylor, Sebastian Rost, Gregory A. Houseman, and Gregor Hillers
Solid Earth, 10, 363–378, https://doi.org/10.5194/se-10-363-2019, https://doi.org/10.5194/se-10-363-2019, 2019
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We constructed a seismic velocity model of the North Anatolian Fault in Turkey. We found that the fault is located within a region of reduced seismic velocity and skirts the edges of a geological unit that displays high seismic velocity, indicating that this unit could be stronger than the surrounding material. Furthermore, we found that seismic waves travel fastest in the NE–SW direction, which is the direction of maximum extension for this part of Turkey and indicates mineral alignment.
Haruo Sato
Solid Earth, 10, 275–292, https://doi.org/10.5194/se-10-275-2019, https://doi.org/10.5194/se-10-275-2019, 2019
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Recent seismological observations clarified that the velocity structure of the crust and upper mantle is randomly heterogeneous. I compile reported power spectral density functions of random velocity fluctuations based on various types of measurements. Their spectral envelope is approximated by the third power of wavenumber. It is interesting to study what kinds of geophysical processes created such a power-law spectral envelope at different scales and in different geological environments.
Peter Gaebler, Lars Ceranna, Nima Nooshiri, Andreas Barth, Simone Cesca, Michaela Frei, Ilona Grünberg, Gernot Hartmann, Karl Koch, Christoph Pilger, J. Ole Ross, and Torsten Dahm
Solid Earth, 10, 59–78, https://doi.org/10.5194/se-10-59-2019, https://doi.org/10.5194/se-10-59-2019, 2019
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On 3 September 2017 official channels of the Democratic People’s Republic of
Korea announced the successful test of a nuclear device. This study provides a
multi-technology analysis of the 2017 North Korean event and its aftermath using a wide array of geophysical methods (seismology, infrasound, remote sensing, radionuclide monitoring, and atmospheric transport modeling). Our results clearly indicate that the September 2017 North Korean event was in fact a nuclear test.
Claudia Werner and Erik H. Saenger
Solid Earth, 9, 1487–1505, https://doi.org/10.5194/se-9-1487-2018, https://doi.org/10.5194/se-9-1487-2018, 2018
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Time reverse imaging is a method for locating quasi-simultaneous or low-amplitude earthquakes. Numerous three-dimensional synthetic simulations were performed to discover the influence of station distributions, complex velocity models and high noise rates on the reliability of localisations. The guidelines obtained enable the estimation of the localisation success rates of an existing station set-up and provide the basis for designing new arrays.
Cited articles
Andrés, J., Draganov, D., Ayarza, P., Schimmel, M., Palomeras, I., Ruiz,
M., and Carbonell, R.: Imaging the lithospheric structure of the Central Iberian
Zone,
Geophys. Res. Abstr.,
EGU2019-7690, EGU General Assembly 2019, Vienna, Austria, 2019.
Ayarza, P., Martínez Catalán, J. R., Gallart, J., Dañobeitia,
J. J., and Pulgar, J. A.: Estudio Sísmico de la Corteza Ibérica Norte
3.3: A seismic image of the Variscan crust in the hinterland of the NW
Iberian Massif, Tectonics, 17, 171–186, 1998.
Ayarza, P., Palomeras, I., Carbonell, R., Afonso, J. C., and Simancas, J. F.: A
wide-angle upper mantle reflector in SW Iberia: Some constraints on its
nature, Phys. Earth Planet. In., 181, 88–102,
https://doi.org/10.1016/j.pepi.2010.05.004, 2010.
Barbero, L. and Villaseca, C.: Eclogite facies relicts in metabasites from
the Sierra de Guadarrama (Spanish Central System): P-T estimations for the
Hercynian evolution, Mineral. Mag., 64, 815–836, 2000.
Bea, F.: La naturaleza del magmatismo de la Zona Centroibérica:
Consideraciones generales y ensayo de correlación, in: Geología de
España, edited by: Vera, J. A., 128–133, SGE-IGME, Madrid, 2004.
Bea, F., Montero, P., and Zinger, T.: The nature, origin and thermal influence
of the granite source layer of Central Iberia, J. Geol., 111,
579–595, 2003.
Carbonell, R.: On the nature of the mantle heterogeneities and
discontinuities: evidence from a very dense wide-angle shot record,
Tectonophysics, 388, 103–117, 2004.
Carbonell, R., Simancas, F., Juhlin, C., Pous, J., Pérez-Estaún, A.,
González-Lodeiro, F., Muñoz, G., Heise, W., and Ayarza, P.: Geophysical
evidence of a mantle derived intrusion in SW Iberia, Geophys. Res.
Lett., 31, L11601, https://doi.org/10.1029/2004GL019684, 2004.
Carbonell, R., Levander, A., and Kind, R.: The Mohorovičić discontinuity
beneath the continental crust: An overview of seismic constraints,
Tectonophysics, 609, 353–376, https://doi.org/10.1016/j.tecto.2013.08.037, 2013.
Claerbout, J.: Synthesis of a layered medium from its acoustic transmission
response, Geophysics, 33, 264–269, https://doi.org/10.1190/1.1439927, 1968.
Cloetingh, S., Burov, E., Beekman, F., Andeweg, B., Andriessen, P. A. M.,
Garcia-Castellanos, D., de Vicente, G., and Vegas, R.: Lithospheric folding in
Iberia, Tectonics, 21, 1041, https://doi.org/10.1029/2001TC901031, 2002.
De Bruijne, C. H. and Andriessen, P. A. M. F.: Fault related denudation in
the Spanish Central System (central Spain), recording the far field effects
of Alpine plate tectonic history of the Iberian microplate, Tectonophysics,
349, 161–184, 2002.
de Vicente, G., Giner, J. L., Muñoz-Martín, A., González-Casado,
J. M., and Lindo, R.: Determination of present-day stress tensor and neotectonic
interval in the Spanish Central System and Madrid Basin, central Spain:
Dynamics of Extensional Basins and Inversion Tectonics, Tectonophysics, 266,
405–424, https://doi.org/10.1016/S0040-1951(96)00200-4, 1996.
de Vicente, G., Vegas, R., Muñoz Martín, A., Silva, P. G.,
Andriessen, P., Cloetingh, S., González Casado, J. M., Van Wees, J. D.,
Álvarez, J., Carbó, A., and Olaiz, A.: Cenozoic thick-skinned
deformation and topography evolution of the Spanish Central System, Global
Planet. Change, 58, 335–381, https://doi.org/10.1016/j.gloplacha.2006.11.042,
2007.
de Vicente, G., Cunha, P. P., Muñoz-Martín, A., Cloetingh, S. A. P.
L., Olaiz, A., and Vegas, R.: The Spanish-Portuguese Central System: An example
of intense intraplate deformation and strain partitioning, Tectonics, 37,
4444–4469, https://doi.org/10.1029/2018TC005204, 2018.
Diaz, J., Gallart, J., and Carbonell, R.: Moho topography beneath the
Iberian-Western Mediterranean region mapped from controlled-source and
natural seismicity surveys, Tectonophysics, 692, 74–85, https://doi.org/10.1016/j.tecto.2016.08.023, 2016.
Díez Balda, M. A., Vegas, R., and González Lodeiro, F.: Central-
Iberian Zone. Autochthonous Sequences. Structure, in: Pre-Mesozoic Geology of
Iberia, edited by: Dallmeyer, R. D. and Martínez García, E.,
172–188, Springer, Berlin, 1990.
Díez Balda, M. A., Martínez Catalán, J. R., and Ayarza, P.:
Syn-collisional extensional collapse parallel to the orogenic trend in a
domain of steep tectonics: The Salamanca detachment zone (Central Iberian
Zone, Spain), J. Struct. Geol., 17, 163–182, 1995.
Ehsan, S. A., Carbonell, R., Ayarza, P., Martí, D.,
Pérez-Estaún, A., Martínez-Poyatos, D., Simancas, F., Azor, A., and
Mansilla, L.: Crustal deformation styles along the reprocessed deep seismic
reflection transect of the Central Iberian Zone (Iberian
Peninsula), Tectonophysics, 621, 159–174, https://doi.org/10.1016/j.tecto.2014.02.014, 2014.
Ehsan, S. A., Carbonell, R., Ayarza, P., Martí, D.,
Martínez-Poyatos, D., Simancas, J. F., Azor, A., Ayala, C., Torné,
M., and Pérez-Estaún, A.: Lithospheric velocity model across the Southern
Central Iberian Zone (Variscan Iberian Massif): The ALCUDIA wide-angle
seismic reflection transect, Tectonics, 34, 535–554,
https://doi.org/10.1002/2014TC003661, 2015.
Flecha, I., Palomeras, I., Carbonell, R., Simancas, F., Ayarza, P., Matas,
J., González-Lodeiro, F., and Peréz-Estaún, A.: Seismic imaging and
modelling of the lithosphere of SW-Iberia, Tectonophysics, 472,
148–115, https://doi.org/10.1016/j.tecto.2008.05.033, 2009.
Fonseca, P. and Ribeiro, A.: Tectonics of the Beja-Acebuches Ophiolite: a major
suture in the Iberian Variscan Foldbelt, Geol. Rundsch., 82,
440–447, https://doi.org/10.1007/BF00212408, 1993.
Franke, W.: The mid-European segment of the Variscides: tectonostratigraphic
units, terrane boundaries and plate tectonic evolution,
Geol. Soc. Spec. Publ., 179,
35–61, https://doi.org/10.1144/GSL.SP.2000.179.01.05, 2000.
Hales, A.: A seismic discontinuity in the lithosphere, Earth Planet.
Sc. Lett., 7, 44–46, 1969.
Julivert, M., Fontboté, M., Ribeiro, A., and Conde, L. E.: Mapa y Memoria
Explicativa del Mapa Tectónico de la Península Ibérica y
Baleares, scale 1 : 1 000 000, 113 pp., Inst. Geol. y Min. de Esp., Madrid,
1972.
Kennett, B. L. N., Engdahl, E. R., and Buland R.: Constraints on seismic velocities
in the earth from travel times, Geophys. J. Int., 122,
108–124, 1995.
Mancilla, F. L. and Diaz, J.: High resolution Moho topography map beneath Iberia
and Northern Morocco from receiver function analysis, Tectonophysics, 663,
203–211, https://doi.org/10.1016/j.tecto.2015.06.017, 2015.
Martínez Catalán, J. R., Rubio Pascual, F. J., Díez Montes, A.,
Díez Fernández, R., Gómez Barreiro, J., Dias da Silva, I.,
González Clavijo, I., Ayarza, P., and Alcock, J. E.: The late Variscan HT/LP
metamorphic event in NW and Central Iberia: relationships to crustal
thickening, extension, orocline development and crustal evolution,
Geol. Soc. Spec. Publ., 405, 225–247, https://doi.org/10.1144/SP405.1, 2014.
Martínez-Poyatos, D., Carbonell, R., Palomeras, I., Simancas, F.,
Ayarza, P., Martí, D., Azor, A., Jabaloy, A., González Cuadra, P.,
Tejero, R., Martín Parra, L. M., Matas, J., González Lodeiro, F.,
Pérez-Estaún, A., García Lobón, J. L., and Mansilla, L.: Imaging
the crustal structure of the Central Iberian Zone (Variscan Belt): the
ALCUDIA deep seismic reflection transect, Tectonics, 31, TC3017,
https://doi.org/10.1029/2011TC002995, 2012.
Matte, P.: The Variscan collage and orogeny (480–290 Ma) and the tectonic
definition of the Amorica microplate: A review, Terra Nova, 13, 122–128,
https://doi.org/10.1046/j.1365-3121.2001.00327.x, 2001.
Muñoz-Martín, A., de Vicente, G., Fernández-Lozano, J.,
Cloetingh, S. A. P. L., Willingshofer, E., Sokoutis, D., and Beekman, F.:
Spectral analysis of the gravity and elevation along the western
Africa–Eurasia plate tectonic limit: Continental versus oceanic
lithospheric folding signals, Tectonophysics, 495, 298–314, https://doi.org/10.1016/j.tecto.2010.09.036, 2010.
Nishitsuji, Y., Ruigrok, E., Gomez, M., Wapenaar, K., and Draganov, D.: Reflection
imaging of aseismic zone of the Nazca slab by global-phase seismic
interferometry, Interpretation, 4, 1A-Y1, https://doi.org/10.1190/int-2015-0225.1, 2016a.
Nishitsuji, Y., Rowe, C. A., Wapenaar, K., and Draganov, D.: Reflection imaging
of the Moon's interior using deep-moonquake seismic interferometry, J.
Geophys. Res.-Planet., 121, 695–713, https://doi.org/10.1002/2015JE004975,
2016b.
Palomeras, I., Carbonell, R., Flecha, I., Simancas, F., Ayarza, P., Matas,
J., Martínez-Poyatos, D., Azor, A., González Lodeiro, F., and
Pérez-Estaún, A.: The nature of the lithosphere across the Variscan
Orogen of SW-Iberia: Dense wide-angle seismic reflection data, J.
Geophys. Res.-Sol. Ea., 114, B02302, https://doi.org/10.1029/2007JB005050,
2009.
Palomeras, I., Carbonell, R., Ayarza, P., Fernandez, M., Simancas, F.,
Martínez-Poyatos, D., González Lodeiro, F., and
Pérez-Estaún, A.: Geophysical model of the lithospher across the
Variscan Belt of SW-Iberia: multidisciplinary assessment, Tectonophysics,
508, 42–51, https://doi.org/10.1016/j.tecto.2010.07.010,
2011.
Pérez Estaún, A., Martínez Catalán, J. R., and Bastida, F.:
Crustal thickening and deformation sequence in the footwall to the suture of
the Variscan belt of northwest Spain, Tectonophysics, 191, 243–253, 1991.
Pous, J., Muñoz-Martín, A., Olaiz, A. J., Seillé, H., and de
Vicente, G.: Análisis de la estructura alpina de la corteza del
centro de la Península Ibérica: Una sección
Magneto-Telúrica a través del Sistema Central (Sierra de Gredos),
Geo-Temas, 13, 4–8, 2012.
Pulgar, J. A., Pérez-Estaún, A., Gallart, J.,
Álvarez-Marrón, J., Gallastegui, J., Alonso, J. L., and ESCIN Group:
The ESCIN-2 deep seismic reflection profile: a traverse across the
Cantabrian Mountains and adjacent Duero basin, Revista Sociedad
Geológica España, 8, 383–394, 1995.
Pulgar, J. A., Gallart, J., Fernández-Viejo, G., Pérez-Estaún, A., and Álvarez-Marrón, J.: Seismic image of the Cantabrian Mountains in the western extension of the Pyrenees from integrated ESCIN reflection and refraction data,
Tectonophysics, 264, 1–19,
https://doi.org/10.1016/S0040-1951(96)00114-X, 1996.
Quintana, I., Pulgar, J. A., and Alonso, J. L.: Displacement transfer from
borders to interior of a plate: A crustal transect of Iberia,
Tectonophysics, 663, 378–398, https://doi.org/10.1016/j.tecto.2015.08.046, 2015.
Ruigrok, E. and Wapenaar, K.: Global-phase seismic interferometry unveils
P-wave reflectivity below the Himalayas and Tibet, Geophys. Res.
Lett., 39, L11303, https://doi.org/10.1029/2012GL051672, 2012.
Schimmel, M. and Gallart, J.: Frequency-dependent phase coherence for noise
suppression in seismic array data, J. Geophys. Res.-Sol.
Ea., 112, B04303, https://doi.org/10.1029/2006JB004680, 2007.
Simancas, J. F., Carbonell, R., González Lodeiro, F.,
Pérez-Estaún, A., Juhlin, C., Ayarza, P., Kashubin, A., Azor, A.,
Martínez-Poyatos, D., Almodóvar, G. R., Pascual, E., Sáez, R.,
and Expósito, I.: Crustal structure of the transpressional Variscan orogen
of SW Iberia: SW Iberia deep seismic reflection profile (IBERSEIS),
Tectonics, 22, 1062, https://doi.org/10.1029/2002TC001479, 2003.
Simancas, J. F., Ayarza, P., Azor, A., Carbonell, R., Martínez-Poyatos,
D., Pérez-Estaún, A., and González Lodeiro, F.: A seismic
geotraverse across the Iberian Variscides: Orogenic shortening, collisional
magmatism, and orocline development, Tectonics, 32, 417–432,
https://doi.org/10.1002/tect.20035, 2013.
Suriñach, E. and Vegas, R.: Lateral inhomogeneities of the Hercynian
crust in central Spain, Phys. Earth Planet. In., 51,
226–234, 1988.
Tait, J., Schätz, M., Bachtadse, V., and Soffel, H.: Palaeomagnetism and
Palaeozoic palaeogeography of Gondwana and European terranes, Geol. Soc. Spec. Publ., 179,
21–34, https://doi.org/10.1144/GSL.SP.2000.179.01.04, 2000.
Teixell, A., Labaume, P., Ayarza, P., Espurt, N., de Saint Blanquat, M., and
Lagabrielle, Y.: Crustal structure and evolution of the Pyrenean-Cantabrian
belt: A review and new interpretations from recent concepts and data,
Tectonophysics, 724–725, 146–170, https://doi.org/10.1016/j.tecto.2018.01.009, 2018.
Tejero, R., Perucha, M. A., Rivas, A., and Bergamín, J. F.: Gravity and
structural models of Spanish Central System, Geogaceta, 20, 947–950, 1996.
Torne, M., Fernàndez, M., Vergés, J., Ayala, C., Salas, M. C.,
Jimenez-Munt, I., and Diaz, J.: Crust and mantle lithospheric structure of the
Iberian Peninsula deduced from potential field modeling and thermal
analysis, Tectonophysics, 663, 419–433, https://doi.org/10.1016/j.tecto.2015.06.003, 2015.
Vegas, R., Vázquez, J. T., Suriñach, E., and Marcos, A.: Model of
distributed deformation, block rotations and crustal thickening for the
formation of the Spanish Central System, Tectonophysics, 184, 367–378,
https://doi.org/10.1016/0040-1951(90)90449-I, 1990.
Villaseca, C., Barbero, L., and Rogers, G.: Crustal origin of Hercynian
peraluminious granitic batholiths of Central Spain: Petrological,
geochemical and isotopic (Sr, Nd) arguments, Lithos, 43, 55–79, 1998.
Wapenaar, K.: Synthesis of an inhomogeneous medium from its acoustic
transmission response, Geophysics, 68, 1756–1759, https://doi.org/10.1190/1.1620649,
2003.
