Schneider, Ralph R; Ferreira, Christian; Tepe, Nathalie; Wintersteller, Paul (2026): Multibeam bathymetry raw data (EM 120 echosounder entire dataset) of RV METEOR during cruise M77/2 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.993201 (DOI registration in progress)
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Published: 2026-05-12
Abstract:
Multibeam bathymetry raw data using the ship's own Kongsberg (Simrad) EM 120 multibeam echosounder was almost continuously recorded during RV METEOR cruise M77/2. Data was recorded on 27 days between 2008-11-25 and 2008-12-21. This dataset contains a survey in the South Pacific Ocean close to the coast of Peru and Ecuador. The approximate average depth of the entire dataset is around 1700m, ranging from 120m to 1000m . The data are archived at the Federal Maritime and Hydrographic Agency of Germany (Bundesamt für Seeschifffahrt und Hydrographie, BSH) and provided to PANGAEA database for data curation and publication. No ancillary sound velocity profiles (SVP) files from the cruise are archived at the BSH, thus no SVP files are added to this dataset. Data analysis of the multibeam raw data revealed that SVP has not been changed during the survey. This publication is conducted within the efforts of the German Marine Research Alliance in the core area 'Data management and Digitalization' (Deutsche Allianz Meeresforschung, DAM). Data are unprocessed and therefore contains incorrect depth measurements (artifacts) without further processing. Note that refraction errors can be expected due to the lack of proper SVP. Overall, it appears that the data quality is rather good since the gridded hillshade data showed relatively few obstacles. Note, that occasionally the EM710 device was partially operated at the same time, however it is not clear whether the simultaneous operation of both systems caused interference during data acquisition. Data can be processed e.g. with the open source software package MB-System (Caress et al. 2024, https://doi.org/10.5281/zenodo.6302801).
Related to:
Pfannkuche, Olaf; Frank, Martin; Schneider, Ralph R; Stramma, Lothar (2011): Climate-biogeochemistry interactions in the tropical ocean of the SE-American oxygen minimum zone, 2008 - 2009 : Cruise No. 77, Leg 1 - 4, October 22, 2008 - February 18, 2009 Talcahuano (Chile) - Callao (Peru) - Guayaquil (Ecuador) - Callao (Peru) - Colon (Panama). METEOR-Berichte, DFG-Senatskommission für Ozeanographie, M77, 163 pp, https://doi.org/10.2312/cr_m77
Project(s):
DAM Underway Research Data (DAM_Underway)
Coverage:
Median Latitude: -6.564469 * Median Longitude: -80.105098 * South-bound Latitude: -15.184905 * West-bound Longitude: -83.240869 * North-bound Latitude: 0.500038 * East-bound Longitude: -75.663540
Date/Time Start: 2008-11-25T09:39:52 * Date/Time End: 2008-12-21T00:58:29
Minimum ELEVATION: -3839.1800 m a.s.l. * Maximum ELEVATION: -5.6800 m a.s.l.
Event(s):
M77/2_0_Underway-1 * Latitude Start: -12.206000 * Longitude Start: -77.275000 * Latitude End: -0.922000 * Longitude End: -81.182000 * Date/Time Start: 2008-11-25T09:39:52 * Date/Time End: 2008-12-21T01:13:30 * O2A Registry URI: void * Campaign: M77/2 * Basis: Meteor (1986) * Method/Device: Swath-mapping system Simrad EM-120 (Kongsberg Maritime AS) * Comment: Event shows start/end point (date/time & coordinates) of first/last data record using Kongsberg (Simrad) EM 120 multibeam echosounder during cruise M77/2
Comment:
These data should not be used for navigational purposes.
Data publishing was realized by Daniel Damaske, MARUM - Center for Marine Environmental Sciences (University Bremen).
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 1 (ProcLevel1)
Size:
22992 data points
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