Articles | Volume 14, issue 5
https://doi.org/10.5194/se-14-499-2023
© Author(s) 2023. 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-14-499-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
08 May 2023
Research article |
| 08 May 2023
| 08 May 2023
Mapping the basement of the Cerdanya Basin (eastern Pyrenees) using seismic ambient noise
GeoSciences Barcelona, Geo3Bcn, CSIC c/ Solé Sabarís sn,
08028 Barcelona, Spain
Sergi Ventosa
GeoSciences Barcelona, Geo3Bcn, CSIC c/ Solé Sabarís sn,
08028 Barcelona, Spain
Martin Schimmel
GeoSciences Barcelona, Geo3Bcn, CSIC c/ Solé Sabarís sn,
08028 Barcelona, Spain
Mario Ruiz
GeoSciences Barcelona, Geo3Bcn, CSIC c/ Solé Sabarís sn,
08028 Barcelona, Spain
Albert Macau
Institut Cartogràfic i Geològic de Catalunya, Barcelona, Spain
Anna Gabàs
Institut Cartogràfic i Geològic de Catalunya, Barcelona, Spain
David Martí
GeoSciences Barcelona, Geo3Bcn, CSIC c/ Solé Sabarís sn,
08028 Barcelona, Spain
Özgenç Akin
GeoSciences Barcelona, Geo3Bcn, CSIC c/ Solé Sabarís sn,
08028 Barcelona, Spain
Department of Geophysical Engineering, Karadeniz Technical University, Trabzon, Turkey
Jaume Vergés
GeoSciences Barcelona, Geo3Bcn, CSIC c/ Solé Sabarís sn,
08028 Barcelona, Spain
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Related subject area
Subject area: Crustal structure and composition | Editorial team: Seismics, seismology, paleoseismology, geoelectrics, and electromagnetics | Discipline: Seismology
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Nicola Piana Agostinetti and Giulia Sgattoni
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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
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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.
Juvenal Andrés, Deyan Draganov, Martin Schimmel, Puy Ayarza, Imma Palomeras, Mario Ruiz, and Ramon Carbonell
Solid Earth, 10, 1937–1950, https://doi.org/10.5194/se-10-1937-2019, https://doi.org/10.5194/se-10-1937-2019, 2019
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
Addison, P. S., Watson, J. N., and Feng, T.: Low-oscillation complex
wavelets, J. Sound Vib., 254, 733–762,
https://doi.org/10.1006/jsvi.2001.4119, 2002.
Agustí, J., Oms, O., Furió, M., Pérez-Vila, M. J., and Roca,
E.: The Messinian terrestrial record in the Pyrenees: The case of Can
Vilella (Cerdanya Basin), Palaeogeogr. Palaeoclimatol. Palaeoecol., 238,
179–189, https://doi.org/10.1016/j.palaeo.2006.03.024, 2006.
Akin, Ö. and Sayil, N.: Site characterization using surface wave methods
in the Arsin-Trabzon province, NE Turkey, Environ. Earth Sci., 75, 1–17,
https://doi.org/10.1007/s12665-015-4840-6, 2016.
Angrand, P. and Mouthereau, F.: Evolution of the Alpine orogenic belts in
the Western Mediterranean region as resolved by the kinematics of the
Europe-Africa diffuse plate boundary, BSGF – Earth Sciences Bulletin, 192, 42,
https://doi.org/10.1051/bsgf/2021031, 2021.
Bard, P. Y.: The SESAME project: an overview and main results, Proc. of the 13th World Conference on Earthquake Engineering, 1–6 August 2004, Vancouver, 2004.
Benjumea, B., Macau, A., Gabàs, A., Bellmunt, F., Figueras, S., and
Cirés, J.: Integrated geophysical profiles and H/V microtremor
measurements for subsoil characterization, Near Surf. Geophys., 9,
413–425, https://doi.org/10.3997/1873-0604.2011021, 2011.
Briais, A., Armijo, R., Winter, T., Tapponnier, P., and Herbecq, A.:
Morphological evidence for quaternary normal faulting and seismic hazard in
the Eastern Pyrenees, Annales Tectonicae, 4, 19–42, 1990.
Brocher, T. M.: Empirical Relations between Elastic Wavespeeds and Density
in the Earth's Crust, B. Seismol. Soc. Am., 95, 2081–2092, https://doi.org/10.1785/0120050077,
2005.
Cabrera, L., Roca, E., and Santanach, P.: Basin formation at the end of a
strike-slip fault: the Cerdanya Basin (eastern Pyrenees), J.
Geol. Soc., 145, 261–268, 1988.
Calvet, M.: Régimes des contraintes et volumes de relief dans l'est des
Pyrénées/Stress regimes and volumes of reliefs in the Eastern
Pyrenees, Géomorphologie, 5, 253–278,
https://doi.org/10.3406/morfo.1999.991, 1999.
Calvet, M., Gunnell, Y., and Laumonier, B.: Denudation history and
palaeogeography of the Pyrenees and their peripheral basins: an
84-million-year geomorphological perspective, Earth-Sci. Rev., 215, 103436,
https://doi.org/10.1016/j.earscirev.2020.103436, 2021.
Calvet, M., Delmas, M., Gunnell, Y., and Laumonier, B.: Geology and
Landscapes of the Eastern Pyrenees, Springer International Publishing, Cham,
https://doi.org/10.1007/978-3-030-84266-6, 2022.
Campillo, M. and Paul, A.: Long range correlations in the diffuse seismic
coda, Science, 299, 547–549,
https://doi.org/10.1126/science.1078551, 2003.
Chevrot, S., Sylvander, M., Diaz, J., Martin, R., Mouthereau, F.,
Manatschal, G., Masini, E., Calassou, S., Grimaud, F., Pauchet, H., and
Ruiz, M.: The non-cylindrical crustal architecture of the Pyrenees, Sci. Rep.-UK, 9591,
https://doi.org/10.1038/s41598-018-27889-x, 2018.
Claerbout, J. F.: Synthesis of a layered medium from its acoustic
transmission response, Geophysics, 33, 264–269,
https://doi.org/10.1190/1.1439927, 1968.
Delgado, J., López Casado, C., Estévez, A., Giner, J., Cuenca, A.,
and Molina, S.: Mapping soft soils in the Segura river valley (SE Spain): a
case study of microtremors as an exploration tool, J. Appl. Geophy., 45,
19–32, https://doi.org/10.1016/S0926-9851(00)00016-1, 2000.
Díaz, J.: On the origin of the signals observed across the seismic
spectrum, Earth Sci. Rev., 161, 224–232,
https://doi.org/10.1016/j.earscirev.2016.07.006, 2016.
Diaz, J. and Schimmel, M.: SANIMS, International Federation of Digital Seismograph Networks [data set], https://doi.org/10.7914/SN/YS_2019, 2019.
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.
Diaz, J., Vergés, J., Chevrot, S., Antonio-Vigil, A., Ruiz, M.,
Sylvander, M., and Gallart, J.: Mapping the crustal structure beneath the
eastern Pyrenees, Tectonophysics, 744, 296–309,
https://doi.org/10.1016/j.tecto.2018.07.011, 2018.
Diaz, J., Ruiz, M., and Jara, J.-A.: Seismic monitoring of urban activity in Barcelona during the COVID-19 lockdown, Solid Earth, 12, 725–739, https://doi.org/10.5194/se-12-725-2021, 2021.
Diaz, J., Ruiz, M., Udina, M., Polls, F., Martí, D., and Bech, J.:
Monitoring storm evolution using a high-density seismic network, Sci. Rep.-UK,
13, 1853, https://doi.org/10.1038/s41598-023-28902-8, 2023.
Efron, B. and Stein, C.: The Jackknife Estimate of Variance, Ann.
Stat., 9, 586–596, 1981.
Ekström, G., Abers, G. A., and Webb, S. C.: Determination of
surface-wave phase velocities across USArray from noise and Aki's spectral
formulation, Geophys. Res. Lett., 36, L18301,
https://doi.org/10.1029/2009GL039131, 2009.
Field, E. and Jacob, K.: The theoretical response of sedimentary layers to
ambient seismic noise, Geophys. Res. Lett., 20, 2925–2928,
https://doi.org/10.1029/93GL03054, 1993.
Gabàs, A., Macau, A., Benjumea, B., Queralt, P., Ledo, J., Figueras, S.,
and Marcuello, A.: Joint Audio-Magnetotelluric and Passive Seismic Imaging
of the Cerdanya Basin, Surv. Geophys., 37, 897–921,
https://doi.org/10.1007/s10712-016-9372-4, 2016.
Gallart, J., Daignières, M., Banda, E., Surinach, E., and Hirn, A.: The
eastern Pyrenean domain: lateral variations at crust-mantle level, Ann.
Geophys., 36, 141–158, 1980.
Ibs-Von Seht, M. and Wohlenberg, J.: Microtremor Measurements Used to Map
Thickness of Soft Sediments, B. Seismol. Soc.
Am., 89, 250–259, 1999.
Institut Cartogràfic i Geològic de Catalunya: Catalan Seismic Network, International Federation of Digital Seismograph Networks [data set], https://doi.org/10.7914/SN/CA, 1984.
Instituto Geografico Nacional, Spain: Spanish Digital Seismic Network, International Federation of Digital Seismograph Networks [data set], https://doi.org/10.7914/SN/ES, 1999.
Instituto Geológico y Minero de España and Bureau de Recherches
Géologiques et Minières: Mapa Geológico de Pirineos a escala
1:400.000, Shapefiles online access,
http://info.igme.es/cartografiadigital/datos/tematicos/pdfs/Pirineos400.pdf (last access: 4 May 2023),
2009.
Konno, K. and Ohmachi, T.: Ground-motion characteristics estimated from
spectral ratio between horizontal and vertical components of microtremor,
B. Seismol. Soc. Am., 88, 228–241,
https://doi.org/10.1785/BSSA0880010228, 1998.
Krischer, L., Megies, T., Barsch, R., Beyreuther, M., Lecocq, T., Caudron,
C., and Wassermann, J.: ObsPy: A bridge for seismology into the scientific
Python ecosystem, Comput. Sci. Discov., 8, 1–17,
https://doi.org/10.1088/1749-4699/8/1/014003, 2015.
Lacan, P. and Ortuño, M.: Active Tectonics of the Pyrenees: A review, J. Iber. Geol.,
38, 9–30, 2012.
Lecocq, T., Hicks, S. P., van Noten, K., van Wijk, K., and Koelemeijer, P.:
Global quieting of high-frequency seismic noise due to COVID-19 pandemic
lockdown measures, Science, 369, 1338–1343, 2020a.
Lecocq, T., Massin, F., Satriano, C., Vanstone, M., and Megies, T.: SeismoRMS – A simple python/jupyter notebook package for studying seismic noise changes (1.0), Zenodo [code], https://doi.org/10.5281/zenodo.3820046, 2020b.
Macau, A., Figueras, S., Colas, B., le Brun, B., Bitri, A., Susagna, T., Cirés, J., González, M., and Roullé, A.: Seismic microzonation in two valleys of the eastern Pyrenees: Andorra and the Cerdanya, Proc. of the First European Conference on Earthquake Engineering and Seismology, 3–8 September 2006, Geneva, paper number: 655,
2006.
Maciel, S. T. R., Rocha, M. P., and Schimmel, M.: Urban seismic monitoring
in Brasilia, Brazil, PLoS One, 16, 1–14,
https://doi.org/10.1371/journal.pone.0253610, 2021.
Mcnamara, D. E., Hutt, C. R., Gee, L. S., Benz, H. M., and Buland, R. P.: A
Method to Establish Seismic Noise Baselines for Automated Station
Assessment, Seismol. Res. Lett., 80, 628–637,
https://doi.org/10.1785/gssrl.80.4.628, 2009.
Milesi, G., Monié, P., Soliva, R., Münch, P., Valla, P. G., Brichau,
S., Bonno, M., Martin, C., and Bellanger, M.: Deciphering the Cenozoic
Exhumation History of the Eastern Pyrenees Along a Crustal-Scale Normal
Fault Using Low-Temperature Thermochronology, Tectonics, 41, e2021TC007172,
https://doi.org/10.1029/2021TC007172, 2022.
Muñoz, J. A.: Evolution of a continental collision belt: ECORS-Pyrenees
crustal balanced cross-section BT – Thrust Tectonics, edited by: McClay, K.
R., Springer Netherlands, Dordrecht, 235–246,
https://doi.org/10.1007/978-94-011-3066-0_21, 1992.
Nakamura, Y.: A method for dynamic characteristics estimation of subsurface
using microtremor on the ground surface, Quarterly Report of RTI, 30,
25–33, 1989.
Pous, J., Julia, R., Sole Sugranes, L., and Frunqub, M.: Cerdanya basin
geometry and its implication on the neogene evolution of the eastern
Pyrenees, Tectonophysics, 129, 355–365, 1986, 1986.
Rawlinson, N. and Sambridge, M.: The Fast Marching Method: An Effective Tool
for Tomographic Imaging and Tracking Multiple Phases in Complex Layered
Media, Explor. Geophys., 36, 341–350,
https://doi.org/10.1071/EG05341, 2005.
RESIF: RESIF-RLBP French Broad-band network, RESIF-RAP strong motion network and other seismic stations in metropolitan France, RESIF – Réseau Sismologique et géodésique Français [data set], https://doi.org/10.15778/resif.fr, 1995.
Rivero, L., Pinto, V., and Casas, A.: Moho depth structure of the eastern
part of the Pyrenean belt derived from gravity data, J. Geodynam., 33, 315–332, 2002.
Roca, E.: The Neogene Cerdanya and Seu d'Urgell intramontane basins (Eastern
Pyrenees), in: Tertiary basins of Spain: the stratigraphic record of
crustal kinematics, edited by: Friend, P. F. and Dabrio, C. J., Cambridge
University Press, Cambridge, 114–119, 1996.
Roca, E. and Santanach, P.: Génesis y evolución de la fosa de la
Cerdanya (Pirineos Orientales), Geogaceta, 1, 37–38, 1996.
Romero, P. and Schimmel, M.: Mapping the Basement of the Ebro Basin in Spain
With Seismic Ambient Noise Autocorrelations, J. Geophys. Res.-Sol. Ea., 123,
5052–5067, https://doi.org/10.1029/2018JB015498, 2018.
Ruigrok, E., Campman, X., and Wapenaar, K.: Basin delineation with a 40-hour
passive seismic record, B. Seismol. Soc. Am.,
102, 2165–2176, https://doi.org/10.1785/0120110242, 2012.
Schimmel, M., Stutzmann, E., and Ventosa, S.: Measuring Group Velocity in
Seismic Noise Correlation Studies Based on Phase Coherence and Resampling
Strategies, IEEE T. Geosci. Remote, 55, 1928–1935,
https://doi.org/10.1109/TGRS.2016.2631445, 2017.
Séranne, M., Couëffé, R., Husson, E., Baral, C., and Villard,
J.: The transition from Pyrenean shortening to Gulf of Lion rifting in
Languedoc (South France) – A tectonic-sedimentation analysis, BSGF – Earth Sciences Bulletin, 192, 27,
https://doi.org/10.1051/bsgf/2021017, 2021.
Shapiro, N. M., Campillo, M., Stehly, L., and Ritzwoller, M. H.:
High-Resolution Surface-Wave Tomography from Ambient Seismic Noise, New
Series, Science, 307, 1615–1618, 2005.
Taillefer, A., Milesi, G., Soliva, R., Monnier, L., Delorme, P.,
Guillou-Frottier, L., and le Goff, E.: Polyphased brittle deformation around
a crustal fault: A multi-scale approach based on remote sensing and field
data on the mountains surrounding the Têt hydrothermal system (Eastern
Pyrénées, France), Tectonophysics, 804, 228710,
https://doi.org/10.1016/j.tecto.2020.228710, 2021.
Tarantola, A.: Inverse Problem Theory and Methods for Model Parameter
Estimation, Society for Industrial and Applied Mathematics,
https://doi.org/10.1137/1.9780898717921, 2005.
Teixell, A.: Crustal structure and orogenic material budget in the west
central Pyrenees, Tectonics, 17, 395–406,
https://doi.org/10.1029/98TC00561, 1998.
Turu, V., Peña-Monné, J. L., Cunha, P. P., Jalut, G., Buylaert,
J.-P., Murray, A. S., Bridgland, D., Faurschou-Knudsen, M., Oliva, M.,
Carrasco, R. M., Ros, X., Turu-Font, L., and Ventura Roca, J.:
Glacial–interglacial cycles in the south-central and southeastern Pyrenees
since ∼180 ka (NE Spain–Andorra–S France), Quaternay Res., 1–28,
https://doi.org/10.1017/qua.2022.68, 2023.
Ventosa, S. and Schimmel, M.: ts-PWS: software to compute time-scale phase-weighted stack, DIGITAL.CSIC [code], https://doi.org/10.20350/digitalCSIC/13846, 2017.
Ventosa, S. and Schimmel, M.: FastPCC: software to compute phase cross-correlations, DIGITAL.CSIC [code], https://doi.org/10.20350/digitalCSIC/13837, 2019.
Ventosa, S., Schimmel, M., and Stutzmann, E.: Extracting surface waves, hum
and normal modes: time-scale phase-weighted stack and beyond, Geophys. J. Int., 211,
30–44, https://doi.org/10.1093/gji/ggx284, 2017.
Ventosa, S., Schimmel, M., and Stutzmann, E.: Towards the processing of
large data volumes with phase cross-correlation, Seismol. Res.
Lett., 90, 1663–1669, https://doi.org/10.1785/0220190022, 2019.
Vergés, J., Kullberg, J. C., Casas-Sainz, A., de Vicente, G., Duarte, L.
V., Fernàndez, M., Gómez, J. J., Gómez-Pugnaire, M. T., Jabaloy
Sánchez, A., López-Gómez, J., Macchiavelli, C.,
Martín-Algarra, A., Martín-Chivelet, J., Muñoz, J. A.,
Quesada, C., Terrinha, P., Torné, M., and Vegas, R.: An Introduction to
the Alpine Cycle in Iberia, in: The Geology of Iberia: A Geodynamic
Approach: Volume 3: The Alpine Cycle, edited by: Quesada, C. and Oliveira,
J. T., Springer International Publishing, Cham, 1–14,
https://doi.org/10.1007/978-3-030-11295-0_1, 2019.
Wapenaar, K.: Retrieving the elastodynamic Green's function of an arbitrary
inhomogeneous medium by cross correlation, Phys. Rev. Lett., 93, 254301,
https://doi.org/10.1103/PhysRevLett.93.254301, 2004.
Wapenaar, K., Draganov, D., Snieder, R., Campman, X., and Verdel, A.:
Tutorial on seismic interferometry: Part 1 – Basic principles and
applications, Geophysics, 75, 75A195–75A209,
https://doi.org/10.1190/1.3457445, 2010.
Wessel, P., Smith, W. H. F., Scharroo, R., Luis, J., and Wobb, F.: Generic
Mapping Tools, Eos, Washington DC, 94, 409, https://doi.org/10.1002/2013EO450001, 2013.
Yu, Y., Song, J., Liu, K. H., and Gao, S. S.: Determining crustal structure
beneath seismic stations overlying a low-velocity sedimentary layer using
receiver functions, J. Geophys. Res.-Sol. Ea., 120, 3208–3218,
https://doi.org/10.1002/2014JB011610, 2015.
Zelt, B. C. and Ellis, R. M.: Receiver-function studies in the Trans-Hudson
Orogen, Saskatchewan, Can. J. Earth Sci., 36, 585–603, 1999.
Short summary
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.
We assess the capability of multiple methods based on the interpretation of seismic noise to map...
