Citation:

PANGAEA.993672 (DOI registration in progress)

Name: Multibeam bathymetry processed data (Kongsberg EM2040 working area dataset) of RV ALKOR during cruise AL644, Baltic Sea
Published: 2026-05-08
License: https://creativecommons.org/licenses/by/4.0/
Keywords: ALKOR; Baltic Sea; MBES; Multibeam Echosounder; ROVKA; SCHUFI

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Published: 2026-05-08

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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: (TARMAP 2025) * Basis: * Method/Device: * 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):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Binary Object	Binary		Hennke, Anne
2	Binary Object (Media Type)	Binary (Type)		Hennke, Anne
3	Binary Object (File Size)	Binary (Size)	Bytes	Hennke, Anne
4	Raster cell size	Raster cell size		Hennke, Anne	Extracted from file
5	File content	Content		Hennke, Anne
6	Vertical datum	Vertical datum		Hennke, Anne
7	Horizontal datum	Horizontal datum		Hennke, Anne	Extracted from file
8	Horizontal datum, projection stored in file	Horizontal datum in file		Hennke, Anne	Extracted from file
9	Longitude, westbound	Longitude west		Hennke, Anne	Extracted from file
10	Longitude, eastbound	Longitude east		Hennke, Anne	Extracted from file
11	Latitude, southbound	Latitude south		Hennke, Anne	Extracted from file
12	Latitude, northbound	Latitude north		Hennke, Anne	Extracted from file
13	UTM Zone, Universal Transverse Mercator	UTM Zone		Hennke, Anne	Extracted from file
14	UTM Easting, Universal Transverse Mercator	UTM east	m	Hennke, Anne	Extracted from file	westbound
15	UTM Easting, Universal Transverse Mercator	UTM east	m	Hennke, Anne	Extracted from file	eastbound
16	UTM Northing, Universal Transverse Mercator	UTM north	m	Hennke, Anne	Extracted from file	southbound
17	UTM Northing, Universal Transverse Mercator	UTM north	m	Hennke, Anne	Extracted from file	northbound
18	Elevation, minimum	Elev min	m a.s.l.	Hennke, Anne	Extracted from file
19	Elevation, maximum	Elev max	m a.s.l.	Hennke, Anne	Extracted from file

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)

Size:

255 data points

Data

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All files referred to in data matrix can be downloaded in one go as ZIP or TAR. Be careful: This download can be very large! To protect our systems from misuse, we require to sign up for an user account before downloading.

1 Binary	2 Binary (Type)	3 Binary (Size) [Bytes]	4 Raster cell size	5 Content	6 Vertical datum	7 Horizontal datum	8 Horizontal datum in file	9 Longitude west	10 Longitude east	11 Latitude south	12 Latitude north	13 UTM Zone	14 UTM east [m] (westbound)	15 UTM east [m] (eastbound)	16 UTM north [m] (southbound)	17 UTM north [m] (northbound)	18 Elev min [m a.s.l.]	19 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