| Title of dataset | Mapping of areas affected by undefined landslides at the present-day seafloor of the Alboran sea (SW Mediterranean) |
| Narrative summary of dataset | For the mapping of general landslides we analysed and reinterpreted a database with over 1500 km of 2D multi- and single-channel seismic lines, with different degrees of
resolution (from a few metres to metric) together with high-resolution
multi-beam bathymetry. Multi-channel seismic records
were downloaded from the Archivo Técnico de Hidrocarburos (https://
geoportal.minetur.gob.es/ATHv2/welcome.do). Single-channel records
were mostly obtained with airgun systems (140 to 530 c.i.) and are
included in the database from the Instituto de Ciencias del Mar,
ICM-CSIC, http://www.icm.csic.es/geo/gma/SurveyMaps. Several multi-beam bathymetry datasets obtained with Simrad
EM12 and Atlas HYDROSWEEP DS multibeam echosounders were also
compiled and integrated for the present study from the ALBA,
MARSIBAL, CONTOURIBER and SARAS projects and the Fishing General
Secretary (Spanish Government). These data are gridded to a resolution
of 50 m
|
| Summary of processing methodology | Multibeam datasets were merged and gridded at a 50 m resolution with CARIS software, prior to geormorphological map generation with Global Mapper software. Morphometric attributes such as slope gradients, profile curvatures, planar curvatures and roughness were obtained by ArcMap (GIS), and topographic profiles allowed us to obtain a better characterization of landslides. |
| Start date | 1992-01-01 |
| End date | 2012-01-01 |