ALBERT

Beschreibung: This data set presents the results of an automated cluster analysis using Gaussian mixture models of the entire Atlantic seafloor environment. The analysis was based on eight global datasets and their derivatives: Bathymetry, slope, terrain ruggedness index, topographic position index, sediment thickness, POC flux, salinity, dissolved oxygen, temperature, current velocity, and phytoplankton abundance in surface waters along with seasonal variabilities (see Source data set). We obtained nine seabed areas (SBAs) that portray the Atlantic seafloor that are shown as polygons in the data set. The attribute table holds short descriptions of each SBA as well as about the colours used in the accompanying paper publication. Data sets like this can be used for further analysis like e.g. for landscape ecology metrics to identify regions of interest. The compressed file further contains a style file that can be used to directly load the correct style in the QGIS software package.

Beschreibung: During M189/2 that took place in the Atlantic between 2023-05-16 and 2023-06-04, multibeam bathymetry raw data were recorded using the vessel's built-in Kongsberg EM122 echosounder. Sound velocity profiles (SVP) were applied on the data for calibration. Please see environmental data (zip file) and the cruise report for details.

Beschreibung: Raw multibeam bathymetry data were collected aboard RV MARIA S. MERIAN during cruise MSM123 using a Kongsberg EM 122 multibeam echosounder. The expedition took place during 2023-11-23 - 2023-12-27 from Halifax (Canada) to St. John's (Canada) in the Labrador Sea. Data were recorded in the EEZs of Brasil and Cape Verde and outside. The aim of MSM123 is to understand and quantify bubble-mediated gas exchange mechanisms in the Labrador Sea (BELS). Sound velocity profiles (SVP) were applied on the data for calibration. Please see environmental data and the cruise report for details. The data are unprocessed and can therefore contain incorrect depth measurements (artifacts) if not further processed. Note that refraction errors may occur when no proper SVP is applied. Acquisition and provision of the data are part of the DAM Underway Project and are according to the FAIR principles.

Beschreibung: This shape file shows the coverage of raw multibeam bathymetry data published during the EU Horizon 2020 iAtlantic project for Milestone 13. The underlying raw data are unprocessed and may contain outliers. The coverage may change slightly once the data are being processed. The raw MBES data were published within work package 2 of the EU Horizon 2020 project iAtlantic - Integrated Assessment of Atlantic Marine Ecosystem in Space and Time (https://www.iatlantic.eu/). This publication is the outline of a compilation of all the above mentioned datasets and aimed to give an overview of where multibeam data exist and about the area covered. Note that this publication does not contain any depth information, it only informs about the covered area. All of the underlying raw datasets are linked below with further information on how and where they were acquired. The following cruises are included: --- RV Meteor: M156 EM710 (2019) M156 EM122 (2019) M156 Total Area: 25267.149949 km² M61-1 HS (2004) Area: 9134.686848 km² M61-2 HS (2004) Area: 9714.855025 km² M62-3 HS (2004) Area: 25028.338653 km² M62-4 HS (2004) Area: 70137.035777 km² M68-3 EM122 (2006) M68-3 EM710 (2006) M68-3 Total Area: 9080.020747 km² M78-3A EM122 (2009) Area: 19410.644047 km² M78-3A EM710 (2009) Area: 274.146303 km² M82-0 Total Area: 1343.151663 km² --- RV Maria S. Merian: MSM17-1 EM122 (2010) Area: 173871.40310 km²; MSM19-3 EM122 (2011) Area: 55813.358391 km² --- RV Sonne datasets (Brix et al. 2020, 2021, 2022): SO280 EM122 Transit (2020) Area: 32996.51 km² SO276 Transit (2020) Area: 24553.707472 km² SO286 EM122 (2021) Area: 49013.305085 m²