Rainbow massif (Middle Atlantic Ridge 36 14'N): AUV IdefX Microbathymetry and Acoustic Backscatter

Date 2022-05
Temporal extent 2022-05-02 -2022-06-02
Author(s) Avoustin Marianne1, Gini Caroline2, Andreani MurielORCID3, Escartin JavierORCID4
Affiliation(s) 1 : ENSTA Bretagne Hydrographie-Océanographie, IUEM Géophysique Marine, Brest, France
2 : Memorial University of Newfoundland, St. John's, NL, A1B 3X5 CANADA
3 : Laboratoire de Géologie de Lyon UMR 5276, ENS et Université Lyon 1, Lyon, France
4 : ENS, CNRS UMR 8538, Paris, France
DOI 10.17882/89445
Publisher SEANOE
Keyword(s) Multibeam bathymetry, AUV, Mid-Atlantic Ridge, Oceanic Core Complex, Hydrothermal Activity, Detachment fault, Tectonics, Volcanism
Abstract

Near-bottom multibeam bathymetry and acoustic backscatter acquired at the Rainbow Massif  (Mid-Atlantic Ridge). High-resolution bathymetry data (2 m/pixel) were acquired by the autonomous 

underwater vehicle (AUV) IdefX, deployed during the ARC-EN-SUB (https://doi.org/10.17600/18000663)  cruise in May 2022. The dataset consists of grids for each individual AUV dive, as well as a global grid merging the ten completed dives. This global grid was obtained by manually shifting and combining original bathymetric grids of each dive using other datasets (primarily shipboard bathymetry from Paulatto et al. [2015]) for geographical reference. The combined grid shows the inter-dive shift artefacts, absent in the individual dive grids. Elevation grids are provided for each AUV dive without interpolation (fillgap 0), with medium (fillgap 3) and high (fillgap 15) interpolation.Acoustic backscatter grids are edited without interpolation (fillgap 0).

All grids are provided in NETCDF GMT .grd format, and with two associated GEOTIFFS with the bathymetry DEM, the acoustic backscatter, and the hillshade (illumination) file. 

All grids are given in WGS84 (WGS 84 - WGS84 - EPSG:4326), in projection Mercator.

Licence CC-BY-NC-SA
Sensor metadata

AUV IdefX with a Kongsberg Reson SMF EM2040 multibeam system.

Data
File Size Format Processing Access
736 MB GRD (GMT NETCDF) Processed data Access on demand until 2024-07-27
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How to cite 

Avoustin Marianne, Gini Caroline, Andreani Muriel, Escartin Javier (2022). Rainbow massif (Middle Atlantic Ridge 36 14'N): AUV IdefX Microbathymetry and Acoustic Backscatter. SEANOE. https://doi.org/10.17882/89445