Articles | Volume 16, issue 8
https://doi.org/10.5194/se-16-761-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/se-16-761-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
05 Aug 2025
Research article |
| 05 Aug 2025
| 05 Aug 2025
High-resolution seismic reflection surveying to delineate shallow subsurface geological structures in the karst area of Shenzhen, China
Zhihui Wang
Chinese Academy of Geological Sciences, Beijing, 100037, China
Department of Earth Sciences, Uppsala University, Uppsala, 75236, Sweden
Christopher Juhlin
Department of Earth Sciences, Uppsala University, Uppsala, 75236, Sweden
Qingtian Lü
CORRESPONDING AUTHOR
Chinese Academy of Geological Sciences, Beijing, 100037, China
Xiaoming Ruan
Chinese Academy of Geological Sciences, Beijing, 100037, China
Zhendong Liu
Chinese Academy of Geological Sciences, Beijing, 100037, China
Chenghua Yu
Shenzhen Investigation & Research Institute CO., LTD, Shenzhen, 518026, China
Mingchun Chen
Sinopec Geophysical Corporation Nanfang Branch, Chengdu, 610200, China
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EGUsphere, https://doi.org/10.5194/egusphere-2025-1325, https://doi.org/10.5194/egusphere-2025-1325, 2025
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Passive seismic data were acquired along a 2.8 km long profile in the Sudret area of Gotland, Sweden, as part of a feasibility study for storage of CO2 below the Baltic Sea. Virtual shot gathers were retrieved by seismic interferometry. Both the body waves and surface waves provide high-quality images of the top of the Ordovician formation and have a good consistency with the borehole section. Our results show that passive data can be used for mapping some general geological features in Gotland.
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Solid Earth, 16, 775–784, https://doi.org/10.5194/se-16-775-2025, https://doi.org/10.5194/se-16-775-2025, 2025
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Reflection seismic data can provide high-resolution images of the Earth's crust and allow a better understanding of crustal structure on all continents. In this paper we revisit reflection seismic data that were acquired previously across the central part of the Scandinavian Peninsula. Merging individual components of the data set in a more optimal manner resulted in a new image of the crust below the Scandinavian Caledonides with a revised interpretation of the crustal structure in the west.
Zhihui Wang, Christopher Juhlin, Peter Hedin, Mikael Erlström, and Daniel Sopher
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Passive seismic data were acquired along a 2.8 km long profile in the Sudret area of Gotland, Sweden, as part of a feasibility study for storage of CO2 below the Baltic Sea. Virtual shot gathers were retrieved by seismic interferometry. Both the body waves and surface waves provide high-quality images of the top of the Ordovician formation and have a good consistency with the borehole section. Our results show that passive data can be used for mapping some general geological features in Gotland.
Christopher Juhlin, Mikael Erlström, Peter Hedin, Bojan Brodic, and Daniel Sopher
EGUsphere, https://doi.org/10.5194/egusphere-2025-938, https://doi.org/10.5194/egusphere-2025-938, 2025
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Geological storage of CO2 has emerged again in recent years as a complement to reducing CO2 emissions to the atmosphere. The Swedish government recently gave the task of further studying the potential for CO2 storage within Swedish territory to the Geological Survey of Sweden. We report here on results from investigations on southern Gotland island. We find that we can map several geological formations of interest and that the rock is seismically anisotropic.
Viktor J. Bruckman, Gregor Giebel, Christopher Juhlin, Sonja Martens, and Michael Kühn
Adv. Geosci., 58, 87–91, https://doi.org/10.5194/adgeo-58-87-2022, https://doi.org/10.5194/adgeo-58-87-2022, 2022
Henning Lorenz, Jan-Erik Rosberg, Christopher Juhlin, Iwona Klonowska, Rodolphe Lescoutre, George Westmeijer, Bjarne S. G. Almqvist, Mark Anderson, Stefan Bertilsson, Mark Dopson, Jens Kallmeyer, Jochem Kück, Oliver Lehnert, Luca Menegon, Christophe Pascal, Simon Rejkjær, and Nick N. W. Roberts
Sci. Dril., 30, 43–57, https://doi.org/10.5194/sd-30-43-2022, https://doi.org/10.5194/sd-30-43-2022, 2022
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The Collisional Orogeny in the Scandinavian Caledonides project provides insights into the deep structure and bedrock of a ca. 400 Ma old major orogen to study deformation processes that are hidden at depth from direct access in modern mountain belts. This paper describes the successful operations at the second site. It provides an overview of the retrieved geological section that differs from the expected and summarises the scientific potential of the accomplished data sets and drill core.
Monika Ivandic, Ayse Kaslilar, and Christopher Juhlin
Adv. Geosci., 56, 163–169, https://doi.org/10.5194/adgeo-56-163-2022, https://doi.org/10.5194/adgeo-56-163-2022, 2022
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Seismic imaging while drilling (SWD) technology offers possibilities of imaging ahead of the drill-bit, which is valuable information for optimizing drilling efficiency. An SWD field test was carried out in August 2020 at an exploration drilling test site in Örebro, Sweden, with the aim to determine if the signals from hammer drilling can be used for seismic imaging around the drill-bit. A comparison with the seismic data generated with a conventional seismic source shows reasonable agreement.
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Adv. Geosci., 56, 13–18, https://doi.org/10.5194/adgeo-56-13-2021, https://doi.org/10.5194/adgeo-56-13-2021, 2021
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
Solid Earth, 12, 1515–1547, https://doi.org/10.5194/se-12-1515-2021, https://doi.org/10.5194/se-12-1515-2021, 2021
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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.
Sonja Martens, Maren Brehme, Viktor J. Bruckman, Christopher Juhlin, Johannes Miocic, Antonio P. Rinaldi, and Michael Kühn
Adv. Geosci., 54, 1–5, https://doi.org/10.5194/adgeo-54-1-2020, https://doi.org/10.5194/adgeo-54-1-2020, 2020
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Short summary
Sinkholes and caves underground pose challenges for various industries in the karst area, particularly those, such as construction, agriculture, and infrastructure development, dependent on stable ground conditions. In this study, we applied seismic reflection, a geophysical method, to delineate shallow subsurface complex geological structures and to better understand limestone cave formation in Shenzhen, China.
Sinkholes and caves underground pose challenges for various industries in the karst area,...
Special issue