Gridded bathymetry from multibeam echosounder EM120 data of the cruise MSM15/2 (2011)
Bathymetry based on data recorded during MSM15-2 between 10.05.2010 and 02.06.2010 in the Black Sea. The aim of the cruise was to perform AUV and ROV pre-site surveys of potential drill sites that represent deposits where shallow gas hydrates have already been sampled by gravity and piston coring and where gas emissions to the water column have been detected.
CI Citation: Paul Wintersteller ( seafloor-imaging@marum.de ): Responsible party for bathymetry post-processing and author of the product.
Simple
- Title
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Gridded bathymetry from multibeam echosounder EM120 data of the cruise MSM15/2 (2011)
- Alternate title
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MSM15-2_2007_EM120_Bathymetry
- Date (Creation)
- 2010-05-11T00:00:00
- Date (Revision)
- 2015-04-13T00:00:00
- Citation identifier
- MSM15-2_2007_EM120_Bathymetry
- Abstract
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Bathymetry based on data recorded during MSM15-2 between 10.05.2010 and 02.06.2010 in the Black Sea. The aim of the cruise was to perform AUV and ROV pre-site surveys of potential drill sites that represent deposits where shallow gas hydrates have already been sampled by gravity and piston coring and where gas emissions to the water column have been detected.
CI Citation: Paul Wintersteller ( seafloor-imaging@marum.de ): Responsible party for bathymetry post-processing and author of the product.
- Point of contact
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Organisation name Individual name Electronic mail address Role MARUM (Prof. Gerhard Bohrmann)
Product manager MARUM
Production center
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Project name
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EMODNet Bathymetry
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Measuring devices
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multi-beam echosounders
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multi-beam echosounders
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Measuring devices
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Differential Global Positioning System receivers
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Parameter Discovery Vocabulary (P02)
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Bathymetry and Elevation
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GEMET - INSPIRE themes, version 1.0
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Hydrography
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- Access constraints
- License
- Use constraints
- Copyright
- Other legal constraints
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Bohrmann, Gerhard; Blinova, Valentina N; Dehning, Klaus; Evtushenko, Dmytri; Friese, Carmen; Hiruta, Akihiro; Hüttich, Daniel; Ivanov, Mikhail; Klapp, Stephan A; Körber, Jan-Hendrik; Komakhidze, George; Kopiske, Eberhard; Lange, Kerstin; Mai, Anh Hoang; Malakhova, Tatiana; Marcon, Yann; Meinecke, Gerrit; Pape, Thomas; Ratmeyer, Volker; Rehage, Ralf; Renken, Jens; Reuter, Christian; Reuter, Michael; Römer, Miriam; Sahling, Heiko; Sakvarelidze, Evgeni; Wintersteller, Paul; Zarrouk, Marcel (2011): Origin and structure of methane, hydrates and fluid flows in the Black Sea - Cruise No. MSM15/2 - May 10-June 02, 2010 - Istanbul (Turkey)-Piraeus (Greece). MARIA S. MERIAN-Berichte, DFG-Senatskommission für Ozeanographie, MSM15/2, 54 pp, doi:10.2312/cr_msm15_2
- Other legal constraints
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Bohrmann, Gerhard; Wintersteller, Paul (2013): Swath sonar bathymetry during Maria S. Merian cruise MSM15/2 with links to multibeam raw data files. MARUM - Center for Marine Environmental Sciences, Universität Bremen, doi:10.1594/PANGAEA.816222
- Spatial representation type
- Grid
- Denominator
- 300000
- Distance
- 125 Metres (m)
- Language
- English
- Character set
- UTF8
- Topic category
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- Oceans
- Begin date
- 2010-04-12T00:00:00
- End date
- 2010-05-08T00:00:00
- Geographic identifier
- Black Sea
- Description
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Map projection parameters, values and units :
Axes units :
UPPER LEFT X=32.6718383820
UPPER LEFT Y=44.7054250966
LOWER RIGHT X=41.2792719128
LOWER RIGHT Y=41.9702591240
WEST LONGITUDE=32° 40' 18.6182" E
NORTH LATITUDE=44° 42' 19.5303" N
EAST LONGITUDE=41° 16' 45.3789" E
SOUTH LATITUDE=41° 58' 12.9328" N
PROJ_DESC=Geographic (Latitude/Longitude) / WGS84 / arc degrees
PROJ_DATUM=WGS84
PROJ_UNITS=arc degrees
EPSG_CODE=4326
COVERED AREA=211803 sq km
- Geographic identifier
- EPSG / WGS84 / Geographic coordinate system / 7.4
- Reference system identifier
- EPSG / WGS 84 (EPSG:4326) / 7.4
- Number of dimensions
- 3
- Dimension name
- Column
- Dimension size
- 13663
- Dimension name
- Row
- Dimension size
- 4342
- Dimension name
- Time
- Dimension size
- 1
- Cell geometry
- Point
- Transformation parameter availability
- Checkpoint Availability
- Point in Pixel
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- Center
- Distribution format
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Name Version ESRI ASCII, NetCDF GMT, ASCII XYZ
Not stated
- Distributor contact
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Organisation name Individual name Electronic mail address Role PANGAEA
Dissemination Unit
- OnLine resource
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Protocol Linkage Name WWW:LINK
https://doi.pangaea.de/10.1594/PANGAEA.860478 PANGAEA
- Hierarchy level
- Dataset
Vertical extent
- Minimum value
- 116
- Maximum value
- 3135
Vertical CRS
Vertical CS
Vertical datum
- Statement
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no information
- Hierarchy level
- Feature
- Dataset
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accuracy
Gridded data positional accuracy
- Name of measure
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horizontal accuracy
- Measure identification
- horizontal accuracy of coordinate
Quantitative result
- Value type
- horizontal accuracy
Quantitative attribute accuracy
- Name of measure
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depth
- Measure identification
- depth accuracy
Quantitative result
- Value
- not defined
Conformance result
- Title
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Shoal bias
- Date
- Pass
- Hierarchy level
- Software
- Description
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MB-System
- Other
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software
- Hierarchy level
- Property type
- Description
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parameters of data processing
Attributes
- Statement
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Description of data processing : Postprocessing and products were conducted by the Seafloor-Imaging group of MARUM, responsible person: Paul Wintersteller ( seafloor-imaging@marum.de ). The open source software MB-system (Caress, D.W., and D.N. Chayes, MB-System Version 5, Open source software distributed from the MBARI and L-DEO web sites, 2000-2012.) was utilized for this purpose. A tide correction was applied, based on the Oregon State University (OSU) tidal prediction software (OTPS) that is retrievable through MB-System. In general, there is a tide differences of less than 20 cm in the Black Sea. Though CTD measurements were taken during the MSM15-2 cruise, these were not sufficient to represent the changes in the sound velocity profile (SVP) throughout the study area, therefore a SVP correction had to be applied partly. This correction of the sound velocity is based on various SVP/CTD measurements throughout different cruises in the Black Sea within the last 15-20 years. In addition, the NATO Black Sea data base ( http://sfp1.ims.metu.edu.tr/ODBMSDB/ODBMSDB.dll/querydb) was consulted for further CTD profiles in the given season/period of the year and in close position to the data set. The CTD data has then been used to calculate SVP by the usage of the UNESCO formula (G.S.K. Wong and S Zhu, Speed of sound in seawater as a function of salinity, temperature and pressure (1995) J. Acoust. Soc. Am. 97(3) pp 1732-1736). Due to a positive offset within the data set a negative draft correction of 5 m had to be applied with mbset while further roll, pitch and heave corrections were not necessary for the MSM15-2 data. Bathymetric data has been manually cleaned for existing artefacts with mbeditviz. NetCDF (GMT) grids of the product and the statistics were created using mbgrid.
Quality assurance was furthermore proven by visual and statistical comparison of crossing survey-lines from different cruises throughout the Black Sea. No total propagated uncertainty (TPU) has been calculated to gather vertical or horizontal accuracy.
The currently published bathymetric grid of the cruise has a resolution of 125 m. A higher resolution is, at least partly, achievable.
- Description
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Description of processed data sources : During the MSM15-2 cruise the Kongsberg EM120 multi-beam echo sounder was used. The EM120 uses a nominal sounding frequency of 12 kHz. 191 beams with a 2°/2° footprint are formed for each ping while the seafloor is detected using amplitude and phase information for each beam sounding. For further information consult https://epic.awi.de/26725/1/Kon2007a.pdf
During MSM15-2 three bathymetric datasets were surveyed with the EM120, though the main focus of MSM15-2 was the surveying of flare areas with the ROV QUEST and the AUV SEAL 2000 (both owned by marum). Responsible person during this cruise / PI: Paul Wintersteller ( pwintersteller@marum.de ).
Metadata
- File identifier
- SDN_CPRD_1568_MSM15-2_2007_EM120_Bathymetry
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level name
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Composite Product Record
- Date stamp
- 2018-03-15T10:43:14
- Metadata standard name
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ISO 19115:2003/19139 - EMODNET - BATHYMETRY
- Metadata standard version
-
1.0
- Metadata author
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Organisation name Individual name Electronic mail address Role MARUM
Author