The ocean floor hosts a tremendous variety of forms that reflect the action of a range of tectonic, sedimentary, oceanographic and biological processes at multiple spatio-temporal scales. Many such processes are hazards to coastal populations and offshore installations, and their understanding constitutes a key objective of national and international research programmes and IODP expeditions. High quality bathymetry, especially when combined with sub-seafloor and/or seabed measurements, provides an exciting opportunity to integrate the approaches of geomorphology and geophysics, and to extend quantitative geomorphology offshore. 3D seismic reflection data has also given birth to the discipline of seismic geomorphology, which has provided a 4D perspective to continental margin evolution.

This interdisciplinary session aims to examine the causes and consequences of geomorphic processes shaping underwater landscapes, including submarine erosion and depositional processes, submarine landslides, sediment transfer and deformation, volcanic activity, fluid migration and escape, faulting and folding, and other processes acting at the seafloor. The general goal of the session is to bring together researchers who characterise the shape of past and present seafloor features, seek to understand the sub-surface and surface processes at work and their impacts, or use bathymetry and/or 3D seismic data as a model input. Contributions to this session can include work from any depth or physiographic region, e.g. oceanic plateaus, abyssal hills, mid-ocean ridges, accretionary wedges, and continental margins (from continental shelves to abyss plains). Datasets of any scale, from satellite-predicted depth to ultra high-resolution swath bathymetry, sub-surface imaging and sampling, are anticipated.

This session is organised by the IAG Submarine Geomorphology Working Group.

Co-organized as OS4.29/SSP3.14/TS4.10
Convener: Aaron Micallef | Co-conveners: Sebastian Krastel, Alessandra Savini
| Tue, 09 Apr, 08:30–10:15, 10:45–12:30
Room 0.31
| Attendance Tue, 09 Apr, 14:00–15:45
Hall X2

Tuesday, 9 April 2019 | Room 0.31

Chairperson: Daniele Spatola
08:30–08:45 |
Shray Badhani, Antonio Cattaneo, Bernard Dennielou, Estelle Leroux, Gwenael Jouet, Marina Rabineau, and Laurence Droz
08:45–09:00 |
Aggeliki Georgiopoulou, Bramley Murton, Maria Judge, Steve Hollis, Sebastian Krastel, Arne Lohrberg, Oisin McManus, Paraskevi Nomikou, Katleen Robert, Aisling Scully, Isobel Yeo, Patrick Collins, Adeline Dutrieux, and Elisa Klein
09:00–09:15 |
Oded Katz, Orit Hyams-Kaphzan, Shani Sultan-Levi, and Ahuva Almogi-Labin
09:15–09:30 |
Rachel Barrett, Benjamin Bellwald, Sebastian Krastel, Felix Gross, Aaron Micallef, Sverre Planke, Christian Berndt, Peter Talling, and Reidun Myklebust
09:30–09:45 |
Deniz Cukur, In-Kwon Um, Jong-Hwa Chun, Jang-Jun Bahk, So-Ra Kim, Yuri Kim, Gwang-Soo Lee, Gee-Soo Kong, and Senay Horozal
Coffee break
Chairperson: Alessandra Savini
10:45–11:00 |
Jiangxin Chen, Haibin Song, Yongxian Guan, Luis Pinheiro, and Minghui Geng
11:00–11:15 |
3D Finite Element model of free gas accumulations in a submarine landslide setting
Monika Wiebe, Felix Gross, Sebastian Krastel, Matthias C. Daszinnies, Joshu J. Mountjoy, and Katrin Huhn
11:30–11:45 |
| Highlight
Daniele Spatola, Aaron Micallef, Angelo Camerlenghi, Aggeliki Georgiopoulouc, Daniel Garcia-Castellanos, Marc-André Gutscherf, Claudio Lo Iacono, Veerle A.I. Huvenne, Joshu Mountjoy, Charles K. Paull, Timothy Le Bas, Lorenzo Facchin, and Daniela Accettella
12:00–12:15 |
Andrea Fiorentino, Silvana D'Angelo, Guido Giordano, Alessandra Pensa, Annamaria Pinton, and Letizia Vita