High-resolution bathymetry map (15-m grid) of a segment of the SWIR provided by MBES data acquired during the 2021 SWINGS marine expedition on the Marion Dufresne vessel

Date 2021-02-01
Author(s) Jeandel CatherineORCID1, Planquette HélèneORCID2, Briais AnneORCID6, Boulart CédricORCID3, Poncelet CyrilleORCID4, Scalabrin CarlaORCID5, Bisquay Herve7
Affiliation(s) 1 : CNRS-LEGOS, 31055 Toulouse
2 : CNRS-LEMAR, 29280 Plouzané
3 : CNRS, Station Biologique de Roscoff, France
4 : IFREMER, GEO-OCEAN, 29280 Plouzané, France
5 : IFREMER, Navire et Systèmes Embarqués, 29280 Plouzané, France
6 : CNRS, GEO-OCEAN, 29280 Plouzané
7 : GENAVIR, 29280 Plouzané
DOI 10.17882/89462
Publisher SEANOE
Keyword(s) SWIR, South West Indian Ridge, acoustic coverage, bathymetry, MBES 12kHz
Abstract

A MBES acoustic coverage of the PE-1 segment of the SWIR (South West Indian Ridge), more specifically in the vicinity of the dredge 5 location of the SWIFT cruise (2001), was carried out during the SWINGS cruise (https://doi.org/10.17600/18001925) with the French research vessel Marion Dufresne in 2021.

SWINGS data were acquired with the hull-mounted multibeam echosounder Kongsberg EM122 12 kHz using an optimised configuration for bathymetry data collection: vessel speed of 5 knots, dual swath, CW signal and an angular opening of 120°. Acoustic data were processed with GLOBE software (https://doi.org/10.17882/70460) to provide a high-resolution bathymetry map (grid resolution of 15 m).

Licence CC-BY
Sensor metadata

echosounder Kongsberg EM122 12 kHz

Data
File Size Format Processing Access
Bathymetry map in netcdf4 format 19 MB NC, NetCDF Processed data Open access
Bathymetry map elevation layer geotiff 6 MB Geotiff Processed data Open access
Bathymetry map backscatter layer geotiff 6 MB Geotiff Quality controlled data Open access
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How to cite 

Jeandel Catherine, Planquette Hélène, Briais Anne, Boulart Cédric, Poncelet Cyrille, Scalabrin Carla, Bisquay Herve (2021). High-resolution bathymetry map (15-m grid) of a segment of the SWIR provided by MBES data acquired during the 2021 SWINGS marine expedition on the Marion Dufresne vessel. SEANOE. https://doi.org/10.17882/89462