/* DATA DESCRIPTION: Citation: Hennke, Anne; Stauffer, Julian B; Gazis, Iason-Zois; Mohrmann, Jochen (2026): Multibeam bathymetry processed data (Kongsberg EM2040 working area dataset) of RV ALKOR during cruise AL644, Baltic Sea [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.993672 (DOI registration in progress) Abstract: Swath sonar bathymetry data recorded during AL644 on RV ALKOR using the hull-mounted Kongsberg EM2040 multibeam echosounder. The cruise took place between 17.11.2025 - 28.11.2025 in the German Baltic Sea. The approximate depth range of the mapped areas is between 10-30m. To improve MBES data quality, sound velocity profile (SVP) casts were conducted in the vicinity of the mapped area prior to and after each survey using a CTD. The data set includes data from the 'Adlergrund' (ADG), located within the Pommeranian Bay/Rønne Bank Nature Conservation Area (NCA), from the 'Kadet Trench ('KDR') NCA and the Fehmarn Belt ('FB') NCA. The mapping has been conducted for baseline habitat studies in the area. Data were manually edited for false measurements using Qimera (https://qps.nl/qimera/#). A raster was calculated and stored in GeoTIFF format with a 0.5 m resolution (negative values), WGS84 as vertical datum and UTM as a projection. The mapping has been conducted for baseline habitat studies in the area. Keyword(s): ALKOR; Baltic Sea; MBES; Multibeam Echosounder; ROVKA; SCHUFI Source: Hennke, Anne; Stauffer, Julian B; Gazis, Iason-Zois; Mohrmann, Jochen (2026): Multibeam bathymetry raw data (Kongsberg EM2040 entire dataset) of RV ALKOR during cruise AL644 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.992000 Funding: Bundesamt für Naturschutz (BfN), grant/award no. 352520010A: SCHUFI - Support in the development of measures and implementation of protection concepts for fish Bundesamt für Naturschutz (BfN), grant/award no. 3525NK3020: ROVKA - Reefs of the Baltic Sea - Occurrence and climate protection performance of Fucus and Saccharina in the German EEZ Coverage: MEDIAN LATITUDE: 54.563500 * MEDIAN LONGITUDE: 10.477900 * SOUTH-BOUND LATITUDE: 54.534800 * WEST-BOUND LONGITUDE: 10.035900 * NORTH-BOUND LATITUDE: 54.592200 * EAST-BOUND LONGITUDE: 10.919900 DATE/TIME START: 2025-11-17T09:42:00 * DATE/TIME END: 2025-11-28T02:07:04 Event(s): AL644_0_Underway-7 * LATITUDE START: 54.534800 * LONGITUDE START: 10.035900 * LATITUDE END: 54.592200 * LONGITUDE END: 10.919900 * DATE/TIME START: 2025-11-17T09:42:00 * DATE/TIME END: 2025-11-28T02:07:04 * O2A REGISTRY URI: https://registry.o2a-data.de/items/13498 * CAMPAIGN: AL644 (TARMAP 2025) * BASIS: Alkor (1990) (URI: https://www2.bsh.de/aktdat/dod/fahrtplanung/Alkor.htm) * METHOD/DEVICE: Kongsberg EM2040 multibeam echosounder (Kongsberg Maritime) * COMMENT: Event shows start/end point (date/time & coordinates) of first/last data record using Kongsberg EM 2040 multibeam echosounder during cruise AL644 Comment: These data should not be used for navigational purposes. Parameter(s): Binary Object (Binary) * PI: Hennke, Anne (https://orcid.org/0009-0000-4989-0161, ahennke@geomar.de) Binary Object (Media Type) (Binary (Type)) * PI: Hennke, Anne (https://orcid.org/0009-0000-4989-0161, ahennke@geomar.de) Binary Object (File Size) [Bytes] (Binary (Size)) * PI: Hennke, Anne (https://orcid.org/0009-0000-4989-0161, ahennke@geomar.de) Raster cell size (Raster cell size) * PI: Hennke, Anne (https://orcid.org/0009-0000-4989-0161, ahennke@geomar.de) * METHOD/DEVICE: Extracted from file File content (Content) * PI: Hennke, Anne (https://orcid.org/0009-0000-4989-0161, ahennke@geomar.de) Vertical datum (Vertical datum) * PI: Hennke, Anne (https://orcid.org/0009-0000-4989-0161, ahennke@geomar.de) Horizontal datum (Horizontal datum) * PI: Hennke, Anne (https://orcid.org/0009-0000-4989-0161, ahennke@geomar.de) * METHOD/DEVICE: Extracted from file Horizontal datum, projection stored in file (Horizontal datum in file) * PI: Hennke, Anne (https://orcid.org/0009-0000-4989-0161, ahennke@geomar.de) * METHOD/DEVICE: Extracted from file Longitude, westbound (Longitude west) * PI: Hennke, Anne (https://orcid.org/0009-0000-4989-0161, ahennke@geomar.de) * METHOD/DEVICE: Extracted from file Longitude, eastbound (Longitude east) * PI: Hennke, Anne (https://orcid.org/0009-0000-4989-0161, ahennke@geomar.de) * METHOD/DEVICE: Extracted from file Latitude, southbound (Latitude south) * PI: Hennke, Anne (https://orcid.org/0009-0000-4989-0161, ahennke@geomar.de) * METHOD/DEVICE: Extracted from file Latitude, northbound (Latitude north) * PI: Hennke, Anne (https://orcid.org/0009-0000-4989-0161, ahennke@geomar.de) * METHOD/DEVICE: Extracted from file UTM Zone, Universal Transverse Mercator (UTM Zone) * PI: Hennke, Anne (https://orcid.org/0009-0000-4989-0161, ahennke@geomar.de) * METHOD/DEVICE: Extracted from file UTM Easting, Universal Transverse Mercator [m] (UTM east) * PI: Hennke, Anne (https://orcid.org/0009-0000-4989-0161, ahennke@geomar.de) * METHOD/DEVICE: Extracted from file * COMMENT: westbound UTM Easting, Universal Transverse Mercator [m] (UTM east) * PI: Hennke, Anne (https://orcid.org/0009-0000-4989-0161, ahennke@geomar.de) * METHOD/DEVICE: Extracted from file * COMMENT: eastbound UTM Northing, Universal Transverse Mercator [m] (UTM north) * PI: Hennke, Anne (https://orcid.org/0009-0000-4989-0161, ahennke@geomar.de) * METHOD/DEVICE: Extracted from file * COMMENT: southbound UTM Northing, Universal Transverse Mercator [m] (UTM north) * PI: Hennke, Anne (https://orcid.org/0009-0000-4989-0161, ahennke@geomar.de) * METHOD/DEVICE: Extracted from file * COMMENT: northbound Elevation, minimum [m a.s.l.] (Elev min) * PI: Hennke, Anne (https://orcid.org/0009-0000-4989-0161, ahennke@geomar.de) * METHOD/DEVICE: Extracted from file Elevation, maximum [m a.s.l.] (Elev max) * PI: Hennke, Anne (https://orcid.org/0009-0000-4989-0161, ahennke@geomar.de) * METHOD/DEVICE: Extracted from file License: Creative Commons Attribution 4.0 International (CC-BY-4.0) (URI: https://creativecommons.org/licenses/by/4.0/) Status: Curation Level: Enhanced curation (URI: https://wiki.pangaea.de/wiki/Curation_levels) * Processing Level: PANGAEA data processing level 3 (URI: https://wiki.pangaea.de/wiki/Processing_levels#PANGAEA_data_processing_level_3) Size: 255 data points Files: All files referred to in data matrix can be downloaded in one go as ZIP or TAR (PANGAEA user account required). To download single files, use the filename from data matrix appended to "https://download.pangaea.de/dataset/993672/files/". */ Binary Binary (Type) Binary (Size) [Bytes] Raster cell size Content Vertical datum Horizontal datum Horizontal datum in file Longitude west Longitude east Latitude south Latitude north UTM Zone UTM east [m] (westbound) UTM east [m] (eastbound) UTM north [m] (southbound) UTM north [m] (northbound) Elev min [m a.s.l.] Elev max [m a.s.l.] AL644_63_EM2040_ADGsw_50cm_AcceptedSoundings_WGS84.tif image/tiff 15.1 MBytes 0.5m bathymetry raster / negative values in meters for depth measurements (= elevation) unknown WGS 84 / UTM zone 33N, EPSG:32633 WGS 84 / UTM zone 33N, EPSG:32633 14.14 14.17 54.70 54.72 33N 444542 446270 6061605 6064293 -35.78 -23.41 AL644_129_EM2040_SWReef_50cm_WGS84.tif image/tiff 41.5 MBytes 0.5m bathymetry raster / negative values in meters for depth measurements (= elevation) unknown WGS 84 / UTM zone 32N, EPSG:32632 WGS 84 / UTM zone 32N, EPSG:32632 10.71 10.74 54.50 54.54 32N 610816 612544 6040097 6044961 -28.67 -15.21 AL644_20_EM2040_ADGNorth_50cm_AcceptedSoundings_WGS84.tif image/tiff 26 MBytes 0.5m bathymetry raster / negative values in meters for depth measurements (= elevation) unknown WGS 84 / UTM zone 33N, EPSG:32633 WGS 84 / UTM zone 33N, EPSG:32633 14.25 14.32 54.76 54.77 33N 451844 456452 6068090 6068858 -19.29 -12.57 AL644_137_EM2040_CenterReef_25cm_WGS84.tif image/tiff 86.9 MBytes 0.5m bathymetry raster / negative values in meters for depth measurements (= elevation) unknown WGS 84 / UTM zone 32N, EPSG:32632 WGS 84 / UTM zone 32N, EPSG:32632 10.89 10.95 54.55 54.60 32N 622251 625803 6046753 6052193 -20.84 -5.74 AL644_82_EM2040_KDR_North_50cm_WGS84.tif image/tiff 22.7 MBytes 0.5m bathymetry raster / negative values in meters for depth measurements (= elevation) unknown WGS 84 / UTM zone 33N, EPSG:32633 WGS 84 / UTM zone 33N, EPSG:32633 12.16 12.23 54.43 54.47 33N 315956 320308 6035449 6039161 -32.16 -13.12 AL644_4_EM2040_ADGcenter_50cm_AcceptedSoundings_WGS84.tif image/tiff 82.2 MBytes 0.5m bathymetry raster / negative values in meters for depth measurements (= elevation) unknown WGS 84 / UTM zone 33N, EPSG:32633 WGS 84 / UTM zone 33N, EPSG:32633 14.24 14.35 54.73 54.74 33N 451316 457972 6065108 6066068 -24.03 -13.96 AL644_79_EM2040_ADGwest_50cm_AcceptedSoundings_WGS84.tif image/tiff 48.6 MBytes 0.5m bathymetry raster / negative values in meters for depth measurements (= elevation) unknown WGS 84 / UTM zone 33N, EPSG:32633 WGS 84 / UTM zone 33N, EPSG:32633 14.19 14.26 54.75 54.77 33N 447930 452666 6067764 6069684 -23.74 -15.03 AL644_82_EM2040_KDR_South_50cm_WGS84.tif image/tiff 32.8 MBytes 0.5m bathymetry raster / negative values in meters for depth measurements (= elevation) unknown WGS 84 / UTM zone 33N, EPSG:32633 WGS 84 / UTM zone 33N, EPSG:32633 12.16 12.23 54.43 54.47 33N 316100 320260 6035444 6039156 -32.67 -13.83 AL644_102_115_EM2040_RippleField_50cm_WGS84.tif image/tiff 56.2 MBytes 0.5m bathymetry raster / negative values in meters for depth measurements (= elevation) unknown WGS 84 / UTM zone 32N, EPSG:32632 WGS 84 / UTM zone 32N, EPSG:32632 10.99 11.05 54.57 54.62 32N 628638 632222 6048222 6054942 -48.51 -7.45 AL644_137_EM2040_CenterReef_50cm_WGS84.tif image/tiff 26.5 MBytes 0.5m bathymetry raster / negative values in meters for depth measurements (= elevation) unknown WGS 84 / UTM zone 32N, EPSG:32632 WGS 84 / UTM zone 32N, EPSG:32632 10.89 10.95 54.55 54.60 32N 622251 625835 6046753 6052193 -20.84 -5.74 AL644_55_EM2040_ADGcliff_50cm_AcceptedSoundings_WGS84.tif image/tiff 41.7 MBytes 0.5m bathymetry raster / negative values in meters for depth measurements (= elevation) unknown WGS 84 / UTM zone 33N, EPSG:32633 WGS 84 / UTM zone 33N, EPSG:32633 14.28 14.30 54.67 54.71 33N 453786 455194 6057924 6063172 -33.68 -19.56 AL644_82_EM2040_KDR_LoopNorthTransit_50cm_WGS84.tif image/tiff 40.7 MBytes 0.5m bathymetry raster / negative values in meters for depth measurements (= elevation) unknown WGS 84 / UTM zone 33N, EPSG:32633 WGS 84 / UTM zone 33N, EPSG:32633 12.16 12.23 54.43 54.47 33N 316100 320580 6035508 6039860 -32.61 -12.99 AL644_18_EM2040_ADGcenterScont_50cm_AcceptedSoundings_WGS84.tif image/tiff 66 MBytes 0.5m bathymetry raster / negative values in meters for depth measurements (= elevation) unknown WGS 84 / UTM zone 33N, EPSG:32633 WGS 84 / UTM zone 33N, EPSG:32633 14.23 14.35 54.72 54.74 33N 450467 458403 6064404 6065940 -24.36 -13.53 AL644_82_EM2040_KDR_LoopSouthTransit_50cm_WGS84.tif image/tiff 42.6 MBytes 0.5m bathymetry raster / negative values in meters for depth measurements (= elevation) unknown WGS 84 / UTM zone 33N, EPSG:32633 WGS 84 / UTM zone 33N, EPSG:32633 12.15 12.22 54.43 54.47 33N 315393 320129 6035076 6038852 -30.73 -15.17 AL644_102_EM2040_Oejet_50cm_WGS84.tif image/tiff 90.4 MBytes 0.5m bathymetry raster / negative values in meters for depth measurements (= elevation) unknown WGS 84 / UTM zone 32N, EPSG:32632 WGS 84 / UTM zone 32N, EPSG:32632 10.99 11.04 54.57 54.63 32N 628638 631582 6048912 6055888 -47.78 -12.00