@inbook {Urgeles2012, title = {{Distinguishing sediment bedforms from sediment deformation in prodeltas of the Mediterranean Sea.}}, booktitle = {Submarine Mass Movement and Their Consequences, Advances in Natural and Technological Hazards Research}, year = {2012}, pages = {233{\textendash}244}, publisher = {Springer Netherlands}, organization = {Springer Netherlands}, address = {Dordrecht}, abstract = {Most Mediterranean prodeltas show undulated sediments on the foresets of their Holocene wedges. These features have been described all along the Mediterranean and interpreted as either soft sediment deformation or, more recently, as sediment bedforms. We present a detailed analysis of these features using ultrahighresolution seismic and bathymetric data, as well as geotechnical information and hydrodynamic time series and hydrographic transects. We show that the characteristics of the sediment undulations (morphology and configuration of the reflections down section and between adjacent undulations) are incompatible with a genesis by sediment deformation. {\textcopyright} Springer Science+Business Media B.V. 2012.}, keywords = {Prodeltas, Sediment bedforms, slope failure, Undulated sediments}, isbn = {978-94-007-2161-6}, doi = {10.1007/978-94-007-2162-3}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84904091924\&partnerID=tZOtx3y1}, author = {Urgeles, Roger and Cattaneo, Antonio and Puig, Pere and Liquete, Camino and De Mol, Ben and Sultan, Nabil and Trincardi, Fabio}, editor = {Yamada, Yasuhiro and Kawamura, Kiichiro and Ikehara, Ken and Ogawa, Yujiro and Urgeles, Roger and Mosher, David and Chaytor, Jason and Strasser, Michael} } @article {Urgeles2011, title = {{A review of undulated sediment features on Mediterranean prodeltas: distinguishing sediment transport structures from sediment deformation}}, journal = {Marine Geophysical Research}, volume = {32}, number = {1-2}, year = {2011}, month = {apr}, pages = {49{\textendash}69}, abstract = {Most Mediterranean prodeltas show undulated sediment features on the foresets of their Holocene wedges. These features have been described all along the Mediterranean for the last 30 years and interpreted as either soft sediment deformation and incipient landsliding, and more recently, as sediment transport structures. We perform a review and detailed analysis of these undulated sediment features using ultrahigh-resolution seismic and bathymetric data as well as geotechnical information and hydrodynamic time series and hydrographic transects. In this study we show that the characteristics of the sediment undulations (configuration of the reflections down section and between adjacent undulations and overall morphologic characteristics) are incompatible with a genesis by sediment deformation alone and do not show evidence of sediment deformation in most cases. Various processes in the benthic boundary layer can be invoked to explain the variety of features observed in the numerous areas displaying sediment undulations. {\textcopyright} 2011 Springer Science+Business Media B.V.}, keywords = {Hyperpycnal flows, Internal waves, Prodeltas, Sediment waves, slope failure, Undulated sediments}, issn = {0025-3235}, doi = {10.1007/s11001-011-9125-1}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-79961209935\&partnerID=tZOtx3y1}, author = {Urgeles, Roger and Cattaneo, Antonio and Puig, Pere and Liquete, Camino and De Mol, Ben and Amblas, David and Sultan, Nabil and Trincardi, Fabio} } @article {Chiocci2011, title = {{Seafloor mapping for geohazard assessment: state of the art}}, journal = {Marine Geophysical Research}, volume = {32}, number = {1-2}, year = {2011}, month = {may}, pages = {1{\textendash}11}, abstract = {During the last two decades, increasing use of full-coverage sonic mapping of the seafloor has made us more aware of the large and different number of seafloor processes and events bearing significant geohazard potential. This awareness combines with the increasing use of the seafloor for infrastructure and with the high density of population and settlement on the coast. Seafloor mapping is the first step in making a census of the geohazard-bearing features present in a given offshore area. It often provides the only tool for a comprehensive, although non-specific, seafloor geohazard assessment over large areas that are scarcely groundtruthed by acoustic prospection and seafloor sampling. However, the characterization of geohazard features on a morphological basis alone is limited, and more detailed investigations are needed to define the character and state of activity of potentially hazardous features. Such investigations include the use of deep-tow or autonomous platforms designed to acquire high-resolution data at depth as well as in situ measurements, both being very expensive activities not applicable over large areas. Thus seafloor mapping is often not only the first and the main but also the only tool for a comprehensive seafloor geohazard assessment. This special issue represents an example of the diversity of approaches to seafloor geohazard assessment and summarizes the present state of this discipline. Both the diverse technologies applied and the specific aims of offshore geohazard assessment brought different communities to deal with the study of seafloor processes and events from remarkably distinct viewpoints. We identified three end members in offshore geohazard assessment: (1) geohazard assessment "sensu stricto", (2) "engineering" geohazard assessment, (3) "non-specific" geohazard assessment. These are being conducted by industry, academia and public agencies in charge of civil protection and land-use planning and management. Understanding the needs and geohazard perception of the different groups is a necessary step for a profitable collaboration in such an interesting and rapidly developing field of marine geology. {\textcopyright} 2011 Springer Science+Business Media B.V.}, keywords = {Geological risks, Multibeam bathymetry, Natural hazards, Seafloor morphology, Submarine landslides}, issn = {0025-3235}, doi = {10.1007/s11001-011-9139-8}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-79957484646\&partnerID=tZOtx3y1}, author = {Chiocci, Francesco L. and Cattaneo, Antonio and Urgeles, Roger} }