Gridded bathymetry from multibeam echosounder EM12S data of the cruise TTR6/2 (1996)
Bathymetry based on data recorded during TTR6 between 05.07.1996 and 20.08.1996 in the Black Sea. In the central Black Sea, the aim of TTR-6 the investigation was to bathymetrically map with the EM12S a field of mud volcanoes known from the previous TTR cruises. In the Sorokin Trough, where gas hydrates were earlier obtained from sea bottom sediments the primary goals concerned the elucidation of the structure of clay diapiric folds and the searching for mud volcanoes and other evidence for fluid flux through the seafloor. The task of looking for the seafloor manifestation of deep fluid emanation was set in the Pallas Uplift area. The EM12s surveying on the Caucasian margin was aimed at the construction of the first detailed bathymetric map of this area.
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 EM12S data of the cruise TTR6/2 (1996)
- Alternate title
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TTR6_1996_EM12S_Sorokin_Bathymetry
- Date (Creation)
- 1996-01-20T00:00:00
- Date (Revision)
- 2015-07-06T00:00:00
- Citation identifier
- TTR6_1996_EM12S_Sorokin_Bathymetry
- Abstract
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Bathymetry based on data recorded during TTR6 between 05.07.1996 and 20.08.1996 in the Black Sea. In the central Black Sea, the aim of TTR-6 the investigation was to bathymetrically map with the EM12S a field of mud volcanoes known from the previous TTR cruises. In the Sorokin Trough, where gas hydrates were earlier obtained from sea bottom sediments the primary goals concerned the elucidation of the structure of clay diapiric folds and the searching for mud volcanoes and other evidence for fluid flux through the seafloor. The task of looking for the seafloor manifestation of deep fluid emanation was set in the Pallas Uplift area. The EM12s surveying on the Caucasian margin was aimed at the construction of the first detailed bathymetric map of this area.
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 Uni-Durham (Dr. John Moffatt Woodside)
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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CTD
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single-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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Woodside, John; Ivanov, MK; Limonov, A F (1997): Neotectonics and fluid flow through seafloor sediments in the Eastern Mediterranean and Black Seas - Parts I and II. IOC Technical Series No. 48, UNESCO, 48, 226 pp, http://folk.uio.no/adrianom/TTR%20WWW/TTR/TTR%20reports/TTR-6___IOC_Technical_Series_48.pdf *
- Other legal constraints
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Woodside, John; Ivanov, MK; Limonov, A F (2015): Swath sonar multibeam EM12-S bathymetry during Gelendzhik cruise TTR6/2 with links to raw data files of bathymetry from Sorokin Trough. doi:10.1594/PANGAEA.843507
- Other legal constraints
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Woodside, John; Ivanov, MK; Limonov, A F (2015): Swath sonar multibeam EM12-S bathymetry during Gelendzhik cruise TTR6/2 with links to raw data files of bathymetry from the central Black Sea. doi:10.1594/PANGAEA.843504
- Spatial representation type
- Grid
- Denominator
- 300000
- Distance
- 125 Metres (m)
- Language
- English
- Character set
- UTF8
- Topic category
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- Oceans
- Begin date
- 1996-07-05T00:00:00
- End date
- 1996-08-20T00:00:00
- Geographic identifier
- Black Sea
- Description
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Map projection parameters, values and units :
Axes units : WEST LONGITUDE=33° 01' 06.2020" E
NORTH LATITUDE=44° 40' 23.2256" N
EAST LONGITUDE=36° 16' 49.3316" E
SOUTH LATITUDE=43° 23' 10.0957" N
PROJ_DESC=Geographic (Latitude/Longitude) / WGS84 / arc degrees
PROJ_DATUM=WGS84
PROJ_UNITS=arc degrees
EPSG_CODE=EPSG:4326
COVERED AREA=37333 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
- 5180
- Dimension name
- Row
- Dimension size
- 2044
- 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.860025 PANGAEA
- Hierarchy level
- Dataset
Vertical extent
- Minimum value
- 5.6
- Maximum value
- 12680
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 TTR-6 cruise, these were not sufficient to represent the changes in sound velocity throughout the transit and/or study area, therefore a sound velocity profile (SVP) correction had to be applied. The corrections are based on various SVP and 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 (or 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). The changes in SVP were applied with the mbset function within mbsystem. Due to a negative offset within the data set a positive draft correction of 10 m as well as a roll offset of 0.15° had to be applied using mbset, while further pitch, heave or heading corrections were not necessary for the TTR-6 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 cruise TTR-6 onboard of R/V Gelendzhik the Kongsberg EM12S multi-beam echo-sounder was used. The EM12S has an angular coverage sector of 90° with 81 beams and uses a low nominal sounding frequency of 13 kHz.
Responsible person during this cruise / PI: O.V. Krylov (Former employee of Moscow State University). Link to further informations: http://folk.uio.no/adrianom/TTR%20WWW/TTR/cruises/ttr6.html
Metadata
- File identifier
- SDN_CPRD_1568_TTR6_1996_EM12S_Sorokin_Bathymetry
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level name
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Composite Product Record
- Date stamp
- 2018-03-15T10:43:21
- Metadata standard name
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ISO 19115:2003/19139 - EMODNET - BATHYMETRY
- Metadata standard version
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1.0
- Metadata author
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Organisation name Individual name Electronic mail address Role MARUM
Author