PANGAEA_992001 Multibeam bathymetry processed data (Kongsberg EM 122 working area dataset) of RV SONNE during cruise SO306, off Mayotte, Indian Ocean Bazhenova, Evgenia A; Bach, Alissa; Eberli, Gregor P; Hebbeln, Dierk Multibeam bathymetry processed data (Kongsberg EM 122 working area dataset) of RV SONNE during cruise SO306, off Mayotte, Indian Ocean 2026-03-03 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.992001 Investigator Evgenia A Bazhenova evgeniabazhenova@gmail.com Earth Science Binary Object Raster cell size File content Horizontal datum Horizontal datum, projection stored in file Longitude, westbound Longitude, eastbound Latitude, southbound Latitude, northbound Elevation, minimum Elevation, maximum geoscientificInformation Bathymetry EM122 multibeam echosounder Indian Ocean Multibeam Echosounder SO306 SO306_0_Underway-3 Extracted from file Sonne_2 2024-08-11 2024-09-07 Complete -29.629 -12.113 32.8579 45.9801 access rights needed CC-BY-4.0: Creative Commons Attribution 4.0 International (License comes into effect after moratorium ends) English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 44 data points text/tab-separated-values Hebbeln, Dierk; Wienberg, Claudia; Ansorge, Malte; Bach, Alissa; Bazhenova, Evgenia A; Brix, Saskia; Busse, Marc; Chioze, Ceiça; Corbera, Guillem; Dehning, Klaus; Eberli, Gregor P; Filander, Zoleka; Freiwald, André; Fröhlich, Siefke; Gigli, Federico; Gori, Andrea; Greiffenhagen, Luis; Hoffman, Leon; Jeskulke, Karen; Kalvelage, Tim; Kniest, Jorit; Korfhage, Severin; Lagunova, Nadezhda; Leymann, Tom; Meyer-Schack, Birgit; Nowald, Nicolas; Orejas, Covadonga; Pfennings, Kai; Raddatz, Jacek; Ruhland, Götz; Schwarz, Ralf; Shunula, Peter; Viadora, Rosário; Vittori, Vincent; Westbeek, Jara; Wilsenack, Maik; Yahya, Saleh (2024): Cold-Water Corals in the West Indian Ocean, Cruise No. SO306, August 8 - September 9, 2024, Port Louis (Mauritius) – Durban (South Africa). SONNE-Berichte, Begutachtungspanel Forschungsschiffe, SO306, 126 pp, https://doi.org/10.48433/cr_so306 Bazhenova, Evgenia A; Bach, Alissa; Eberli, Gregor P; Hebbeln, Dierk (2024): Multibeam bathymetry raw data (Kongsberg EM 122 entire dataset) of RV SONNE during cruise SO306 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.973306

MBES bathymetry data were collected using the ship's own Kongsberg EM 122 multibeam echosounder during the RV SONNE cruise SO306 CoWIO (Port Louis, Mauritius - Durban, South Africa). The primary goal of the cruise was to search for cold-water coral mounds in the West Indian Ocean. Data were recorded in the EEZs of Mayotte, Tanzania, Mozambique, and South Africa. These studies were endorsed as an UN Ocean Decade 2021-2030 of Ocean Science for Sustainable Development activity. This dataset includes 4 bathymetric grids produced based on the MBES data collected in the EEZ of Mayotte between 2024-08-11 and 2024-08-15. The grids represent 4 surveyed areas: 1) transit to the calibration area; 2) calibration area for the EM122 MBES north east of Mayotte; 3) main working area south west of Mayotte; 4) transits between the two working areas. Postprocessing of raw .all files was performed onboard by Evgenia Bazhenova and Alissa Bach using the QPS Qimera software. Data quality control included 1) verification that the SVP data were applied correctly based on the time and location; 2) blocking outer beams and in-turn data to ensure the best possible quality of the overlapping swaths, 3) manual point cloud cleaning if required. Depths measured by the MBES are reported in respect to the water level. Only static draft was taken into account. No tidal corrections were applied during the data acquisition or data postprocessing. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.992001"! ** These data should not be used for navigational purposes.

https://desktop.arcgis.com/en/arcmap/10.3/manage-data/raster-and-images/cell-size-of-raster-data.htm Raster cell size https://doi.org/10.48433/cr_so306 Cold-Water Corals in the West Indian Ocean, Cruise No. SO306, August 8 - September 9, 2024, Port Louis (Mauritius) – Durban (South Africa) https://doi.pangaea.de/10.1594/PANGAEA.973306 Multibeam bathymetry raw data (Kongsberg EM 122 entire dataset) of RV SONNE during cruise SO306 https://gisgeography.com/horizontal-datum/ Horizontal datum https://gisgeography.com/horizontal-datum/ Horizontal datum, projection stored in file https://uol.de/icbm/forschungsplattformen-schiffe/sonne Sonne_2 DIF 9.4 2026-03-03 2026-04-29