Articles | Volume 14, issue 2
https://doi.org/10.5194/se-14-137-2023
https://doi.org/10.5194/se-14-137-2023
Research article
 | 
22 Feb 2023
Research article |  | 22 Feb 2023

Seismic amplitude response to internal heterogeneity of mass-transport deposits

Jonathan Ford, Angelo Camerlenghi, Francesca Zolezzi, and Marilena Calarco

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Manuscript not accepted for further review
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Cited articles

Alves, T. M. and Lourenço, S. D.: Geomorphologic features related to gravitational collapse: Submarine landsliding to lateral spreading on a Late Miocene–Quaternary slope (SE Crete, eastern Mediterranean), Geomorphology, 123, 13–33, https://doi.org/10.1016/j.geomorph.2010.04.030, 2010. a
Alves, T. M., Kurtev, K., Moore, G. F., and Strasser, M.: Assessing the internal character, reservoir potential, and seal competence of mass-transport deposits using seismic texture: A geophysical and petrophysical approach, AAPG Bulletin, 98, 793–824, https://doi.org/10.1306/09121313117, 2014. a
Avseth, P., Mukerji, T., and Mavko, G.: Quantitative seismic interpretation: Applying rock physics tools to reduce interpretation risk, Cambridge University Press, https://doi.org/10.1017/CBO9780511600074, 2010. a
Badhani, S., Cattaneo, A., Collico, S., Urgeles, R., Dennielou, B., Leroux, E., Colin, F., Garziglia, S., Rabineau, M., and Droz, L.: Integrated geophysical, sedimentological and geotechnical investigation of submarine landslides in the Gulf of Lions (Western Mediterranean), Geol. Soc. Spec. Pub., 500, 359–376, https://doi.org/10.1144/SP500-2019-175, 2020. a
Barrett, R. S., Bellwald, B., Talling, P. J., Micallef, A., Gross, F., Berndt, C., Planke, S., Myklebust, R., and Krastel, S.: Does Retrogression Always Account for the Large Volume of Submarine Megaslides? Evidence to the Contrary From the Tampen Slide, Offshore Norway, J. Geophys. Res.-Sol. Ea., 126, e2020JB020655, https://doi.org/10.1029/2020JB020655, 2021. a
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Submarine landslides commonly appear as low-amplitude zones in seismic data. Previous studies have attributed this to a lack of preserved internal structure. We use seismic modelling to show that an amplitude reduction can be generated even when there is still metre-scale internal structure, by simply deforming the bedding. This has implications for interpreting failure type, for core-seismic correlation and for discriminating landslides from other "transparent" phenomena such as free gas.