Satellite-derived intertidal bathymetry for the Danish Wadden on the West coast of Denmark

Satellite-derived intertidal bathymetry for the Tagus estuary near Lisbon Portugal

DTM derived from a hydrographic survey (EMEPC LH1) performed within the scope of the Portuguese Continental Shelf Extension Project (UNCLOS). The data made available to the Emodnet project was sampled from the survey data with an aproximate 250m sampling interval, in N-S and E-W directions.

Source data for the EMODNet DTM for the Belgium Coastal Waters is compiled by the Vlaamse Hydrografie (http://www.afdelingkust.be/en/bathymetric-database) at a resolution of 1/512 arc minute. The data set covers dry coast and dunes along the Belgian coast.

Source data for the EMODNet DTM for the Belgium Coastal Waters is compiled by the Vlaamse Hydrografie (http://www.afdelingkust.be/en/bathymetric-database) at a resolution of 1/64 arc minute. The data set covers the waters along the Belgian coast.

This dataset was collected during a survey within "Parchi Marini" Project of CNR aimed to seafloor characterization in potential protected marine areas. Bathymetric data were collected by means of the MBES system Simrad EM3000 that was pole-mounted on a 30 meters long vessel. The MBES has 127 beams and an operational frequency of 300 kHz. A 12 channel DGPS system was used for ship positioning and a motion sensor TSS-DMS02-05 was used to provide corrections for attitude data

Source data for the EMODNet DTM for the Belgium Coastal Waters is compiled by the Vlaamse Hydrografie (http://www.afdelingkust.be/en/bathymetric-database) at a resolution of 1/512 arc minute. The data set covers the waters along the Belgian coast.

The DTM was generated from two dataset acquired around Ischia and Procida Islands (Gulf of Naples, Italy). The dataset were collected within CARG (Geological CARtography) Project by means of the MBES system Reson SeaBat8125. The MBES was pole-mounted on a 6 meters long vessel. The MBES has 240 beams 1°x1°; the operational frequency was 455 kHz. A LandStar 12 channel DGPS system was used for ship positioning and a motion sensor Ixea Octans3000 was used to provide corrections for attitude data. A Sound Velocity Sensor was installed near the transducers thus providing realtime sound speed for beam steering. A sound velocity profiler Reson SVP15 was lowered through the water column every 6–8 h to get the velocity profile required for the depth computation. The bathymetric data were processed using the PDS2000 software. Data de-spiking was carried out without the application of automatic filters in order to preserve data accuracy and resolution.

The DTM is a compilation of multibeam echosounder surveys at Central Aegean Sea - around Santorini Island (Greece), acquired with R/V Aegaeo using Seabeam 2120 (20 kHz) echosounder during 2001, 2006, 2016 and 2017 cruises. Grid resolution is 1/32 arc-minutes processed for the purpose of the HR DTMs layer of EMODnet Bathymetry HRSM, October 2018.

The DTM is a compilation of multibeam echosounder surveys at Korinthiakos Gulf (Greece) acquired with R/V Aegaeo using Seabeam 2120 (20 kHz) echosounder from 2001 to 2004. Grid resolution is 1/32 arc-minutes processed for the purpose of the HR DTMs layer of EMODnet Bathymetry HRSM, October 2018.