Seismic amplitude response to internal heterogeneity of mass-transport deposits

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

doi:https://doi.org/10.5194/se-14-137-2023

Articles | Volume 14, issue 2

https://doi.org/10.5194/se-14-137-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/se-14-137-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 14, issue 2

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

Supplement

https://doi.org/10.5194/se-14-137-2023-supplement

Data sets

Seismic amplitude response to internal heterogeneity of mass-transport deposits Jonathan Ford, Angelo Camerlenghi, Francesca Zolezzi, and Marilena Calarco https://doi.org/10.5281/zenodo.6949299

Model code and software

Seismic amplitude response to internal heterogeneity of mass-transport deposits Jonathan Ford, Angelo Camerlenghi, Francesca Zolezzi, and Marilena Calarco https://doi.org/10.5281/zenodo.6949299

Short summary

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.