A multibeam-bathymetric compilation for the southern Amundsen Sea shelf, 1999-2019

We present a new compilation of multibeam-bathymetric data for the inner Amundsen Sea continental shelf beyond Thwaites and Pine Island glaciers (bounding box: 100W to 110W, 74S to 75.5S). The region includes Pine Island Bay, marine areas offshore the Thwaites Ice Shelf to the Crosson Ice Shelf, and covers an area of 74,750 km2. The bathymetric grids were compiled from all available multibeam echosounder (MBES) data acquired by UK, German, USA and Korean scientific cruises to the area between 1999 and 2019 (see lineage). Three grids of sea floor elevation data are available in a range of formats (ESRI ascii interchange format and GMT-compatible netCDF 4byte float): a 50-m resolution grid with no interpolation, a 50-m grid interpolated up to 300 m from cells with real data, and a 500-m resolution grid with no interpolation. Note that these grids have not been merged with regional bathymetric grids and, therefore, do not have continuous coverage (i.e. cells are only populated where multibeam data exist).

This work was supported by grants from the National Science Foundation (NSF: Grant OPP- 1738942) and Natural Environment Research Council (NERC: Grant NE/S006664/1) as part of the International Thwaites Glacier Collaboration (ITGC) programme, and grants NE/J005770/1 and NE/J005703/1 as part of the iSTAR Programme.

Alternate title: Polar Data Centre (PDC) record GB/NERC/BAS/PDC/01364

Date (Publication): 2021-03-22

Citation identifier: http://www.antarctica.ac.uk/dms/metadata.php?id= / GB/NERC/BAS/PDC/01364

Point of contact

Organisation name	Individual name	Electronic mail address	Role
British Antarctic Survey		pdc@bas.ac.uk	Custodian
UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation	Hogan, K., Larter, R., Graham, A., Nitsche, F., Kirkham, J., Totten Minzoni, R., Clark, R., Fitzgerald, V., Anderson, J., Hillenbrand, C., Simkins, L., Smith, J., Gohl, K., Arndt, J., Hong, J., Heywood, K., Abrahamsen, E., Thompson, A., Dunbar, R., & Wellner, J.	pdc@bas.ac.uk	Originator

Maintenance and update frequency: Unknown

Keywords

NDGO0001

NERC OAI Harvesting

NERC_DDC

GCMD Parameter Valids

EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography
EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography
EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Water Depth

BAS Free-text keywords

Coastal bathymetry
ITGC
Multibeam
Pine Island Bay
Southern Amundsen Sea Embayment
Thwaites Glacier
Thwaites Ice Shelf

Use limitation: This data is covered by a UK Open Government Licence ( http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/) Further by downloading this data the user acknowledges that they agree with the NERC data policy ( http://www.nerc.ac.uk/research/sites/data/policy.asp) and cite the data:

Hogan, K. A., Larter, R. D., Graham, A. G. C., Nitsche, F. O., Kirkham, J. D., Totten Minzoni, R., Clark, R., Fitzgerald, V., Anderson, J. B., Hillenbrand, C.-D., Simkins, L., Smith, J. A., Gohl, K., Arndt, J. E., Hong, J., Heywood, K. J., Abrahamsen, E. P., Thompson, A. F., Dunbar, R., & Wellner, J. S. (2020). A multibeam-bathymetric compilation for the southern Amundsen Sea shelf, 1999-2019 (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/F2DFEDA9-BF44-4EF5-89A3-EE5E434A385C

Access constraints: Other restrictions

Other constraints: This data is covered by a UK Open Government Licence ( http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/) Further by downloading this data the user acknowledges that they agree with the NERC data policy ( http://www.nerc.ac.uk/research/sites/data/policy.asp) and cite the data:

Hogan, K. A., Larter, R. D., Graham, A. G. C., Nitsche, F. O., Kirkham, J. D., Totten Minzoni, R., Clark, R., Fitzgerald, V., Anderson, J. B., Hillenbrand, C.-D., Simkins, L., Smith, J. A., Gohl, K., Arndt, J. E., Hong, J., Heywood, K. J., Abrahamsen, E. P., Thompson, A. F., Dunbar, R., & Wellner, J. S. (2020). A multibeam-bathymetric compilation for the southern Amundsen Sea shelf, 1999-2019 (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/F2DFEDA9-BF44-4EF5-89A3-EE5E434A385C

Distance: 50 m

Language: English

Topic category

Elevation
Geoscientific information
Oceans

Begin date: 1999-01-01

End date: 2019-12-31

Reference system identifier: OGP / urn:ogc:def:crs:EPSG::4326

Distribution format

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
Polar Data Centre - British Antarctic Survey		pdc@bas.ac.uk	Distributor

OnLine resource

Protocol	Linkage	Name
http		GET DATA

Hierarchy level: Dataset

Domain consistency

Measure identification: INSPIRE / Conformity_001

Conformance result

Title: INSPIRE Data Specification on unknown theme Guidelines

Date

Explanation: See the referenced specification

Pass: No

Statement: Quality control was undertaken manually to remove any outliers in the source datasets. This involved cleaning of the raw data during or after each individual cruise, and then again after compiling the datasets. For cruise NBP19-02, one of the principal datasets in the grid, the raw data cleaning was done using the "mbedit" and "mbeditviz" programs from MB-system. Other BAS datasets were also cleaned using "mbedit".