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Lütjens, Mona; DMello, Gavin; Felgendreher, Meret; Menapace, Walter; Sternberg, Harald (2023): Multibeam bathymetry processed data (Kongsberg EM 122 transit dataset, Generic sensor format) of RV SONNE during cruise SO292/2, North Pacific Ocean [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.955289

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Abstract:
The multibeam echo sounder (MBES) data was collected from the 10.07.2022 (09:24 UTC) when leaving the Northern Mariana EEZ to the 18.07.2022 (00:24 UTC) before entering the EEZ close to the Aleutian Islands, Alaska with the Kongsberg EM122 on RV SONNE in the North Pacific Ocean (SO292/2). The deep-water MBES EM122 operates with an acoustic frequency of 12 kHz and a beam opening angle of 0.5° x 1°. The time, motion and position data (WGS84, geographic) was measured by the Kongsberg Seapath system on board. During the acquisition the echo sounder was monitored as well as settings and filter adjusted according to the environment. The transit speed was up to 13 knots. The swath opening angle was set between 60° and 65° resulting in a swath width of about 22 km in 5,000 m water depth. The Ping Mode was set to Auto, which enabled the system to use continuous wave pulses in shallow modes and frequency modulated pulses in deep modes. Further, high density and dual swath mode were continuously applied. As the data was collected during transit, no specific surveys were performed.
When sound velocity related artefacts were noticed in the MBES data, the sound velocity profile in the MBES acquisition software SIS was updated. Profiles were measured using XSVs (Expendable Sound Velocity) up to a depth of 2,000 m on the 11.07.2022, 13.07.2022 and 16.07.2022. Additionally, synthetic SVPs extracted form the World Ocean Altlas 2009 from NOAA (Levitus, 2013) using the software "Sound Speed Manager" (developed by the UNH Center for Coastal and Ocean Mapping and NOAA Coast Survey Development Laboratory (CSDL)) were applied. The SVP data is not part of this submission.
The data was post-processed using the software QPS Qimera v.2.4.9. No further SVP re-computation, navigation correction or tide correction was applied. Erroneous depth measurements were deleted manually by using the swath and slice editor. The vertical datum is mean sea level (MSL). The cleaned data was exported in gsf format as well as bathymetric grids in a resolution of 100 m (geotiff format, projected coordinates WGS84/UTM zone 55N (EPSG: 32655).
Keyword(s):
Bathymetry; Pacific Ocean
Related to:
Levitus, Sydney: NODC Standard Product: World Ocean Atlas 2009 (NCEI Accession 0094866). NOAA National Centers for Environmental Information, https://accession.nodc.noaa.gov/0094866
Lütjens, Mona; DMello, Gavin; Felgendreher, Meret; Menapace, Walter; Sternberg, Harald (2023): Multibeam bathymetry processed data (Kongsberg EM 122 transit dataset) of RV SONNE during cruise SO292/2, North Pacific Ocean. PANGAEA, https://doi.org/10.1594/PANGAEA.956750
Source:
Lütjens, Mona; DMello, Gavin; Felgendreher, Meret; Menapace, Walter (2023): Multibeam bathymetry raw data (Kongsberg EM 122 transit dataset) of RV SONNE during cruise SO292/2, North Pacific Ocean. PANGAEA, https://doi.org/10.1594/PANGAEA.955291
Coverage:
Median Latitude: 35.827458 * Median Longitude: 161.641556 * South-bound Latitude: 21.842731 * West-bound Longitude: 148.295005 * North-bound Latitude: 47.428762 * East-bound Longitude: 178.010529
Date/Time Start: 2022-07-10T09:24:04 * Date/Time End: 2022-07-17T23:53:58
Minimum ELEVATION: -7393.926 m a.s.l. * Maximum ELEVATION: -2581.346 m a.s.l.
Event(s):
SO292/2_0_Underway-3 * Latitude Start: 21.843700 * Longitude Start: 148.295000 * Latitude End: 47.471600 * Longitude End: 178.101000 * Date/Time Start: 2022-07-10T09:24:04 * Date/Time End: 2022-07-18T00:23:45 * Campaign: SO292/2 (Deep-Blue) * Basis: Sonne_2 * Method/Device: Swath-mapping system Simrad EM122 (Kongsberg Maritime AS) * Comment: Event shows start/end point (date/time & coordinates) of first/last data record using Kongsberg EM 122 multibeam echosounder during cruise SO292/2
Comment:
These data should not be used for navigational purposes.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventLütjens, Mona
2Binary ObjectBinaryLütjens, Mona
3Binary Object (Media Type)Binary (Type)Lütjens, Mona
4Binary Object (File Size)Binary (Size)BytesLütjens, Mona
5File contentContentLütjens, Mona
6Data file recording durationData record durationminLütjens, Mona
7Data file recording distanceData record distancemLütjens, Mona
8Ship speedShip spknLütjens, Mona
9Number of pingsPingsLütjens, Mona
10Start of data file recording, date/timeFile start date/timeLütjens, Mona
11Start of data file recording, latitudeFile start latitudeLütjens, Mona
12Start of data file recording, longitudeFile start longitudeLütjens, Mona
13Start of data file, headingFile start headingdegLütjens, Mona
14Start of data file, depthFile start depthmLütjens, Mona
15Stop of data file recording, date/timeFile stop date/timeLütjens, Mona
16Stop of data file recording, latitudeFile stop latitudeLütjens, Mona
17Stop of data file recording, longitudeFile stop longitudeLütjens, Mona
18Stop of data file, headingFile stop headingdegLütjens, Mona
19Stop of data file, depthFile stop depthmLütjens, Mona
20DATE/TIMEDate/TimeLütjens, MonaGeocode
21LATITUDELatitudeLütjens, MonaGeocode
22LONGITUDELongitudeLütjens, MonaGeocode
23ELEVATIONElevationm a.s.l.Lütjens, MonaGeocode
24CommentCommentLütjens, Mona
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 2 (ProcLevel2)
Size:
6222 data points

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