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.

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Date (Creation)
2020-07-20
Date (Revision)
2020-07-20
Date (Publication)
2020-07-20
Date (released)
2020-07-20
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1.0
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https://doi.org/10.5285/f2dfeda9-bf44-4ef5-89a3-ee5e434a385c
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doi
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GB/NERC/BAS/PDC/01364
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https://data.bas.ac.uk/

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NE/S006664/1
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NE/J005770/1
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NE/J005703/1
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Please cite this item as: 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. (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

Credit

No credit.
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Completed
Point of contact
Organisation name Individual name Electronic mail address Role
British Antarctic Survey Hogan, Kelly A. Author
British Antarctic Survey Larter, Robert D. Author

College of Marine Science, University of South Florida

 		Graham, Alastair G.C. Author

Lamont-Doherty Earth Observatory, Columbia University

 		Nitsche, Frank O. Author
British Antarctic Survey Kirkham, James D. Author

Department of Geological Sciences, University of Alabama

Totten Minzoni, Rebecca

 		Author

Departmentof Earth and Atmospheric Sciences,University of Houston

Clark, Rachel

 		Author

Department of Geological Sciences, University of Alabama

Fitzgerald, Victoria

 		Author

Department of Earth Science, Rice University,Houston

Anderson, John B.

 		Author
British Antarctic Survey

Hillenbrand, Claus-Dieter

 		Author

Department of Environmental Sciences, University of Virginia

 		Simkins, Lauren Author
British Antarctic Survey

Smith, James A.

 		Author

Alfred-Wegener-Institut Helmholtz-Zentrum fur Polar und Meeresforschung

 		Gohl, Karsten Author

Alfred-Wegener-Institute

 		Arndt, Jan Erik Author

Korea Polar Research Institute, Yeonsoo-gu, South Korea

Hong, Jongkuk

 		Author

University of East Anglia

 		Heywood, Karen J. Author
British Antarctic Survey Abrahamsen, E. Povl Author

Environmental Science and Engineering, California Institute of Technology

 		Thompson, Andrew F. Author

Stanford University

Dunbar, Rob

 		Author

Departmentof Earth and Atmospheric Sciences,University of Houston

 		Wellner, Julia S. Author
NERC EDS UK Polar Data Centre

PDCServiceDesk@bas.ac.uk

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As needed
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Completed
Global Change Master Directory (GCMD) Science Keywords
Theme

  • Coastal bathymetry

  • ITGC

  • Multibeam

  • Pine Island Bay

  • Southern Amundsen Sea Embayment

  • Thwaites Glacier

  • Thwaites Ice Shelf
Place

  • Amundsen Sea Embayment Antarctica

  • Pine Island Bay Antarctica

  • Pine Island Ice Shelf Antarctica

  • Canisteo Peninsula Antarctica

  • Crosson Ice Shelf Antarctica

GEMET - INSPIRE themes, version 1.0
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This data is governed by the NERC Data Policy: https://www.ukri.org/who-we-are/nerc/our-policies-and-standards/nerc-data-policy/

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Further by downloading this data the user acknowledges that they agree with the NERC data policy () 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

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  • Geoscientific information
  • Oceans
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Begin date
1999-01-01
End date
2019-12-31
Supplemental Information

It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk.

Title

European Petroleum Survey Group (EPSG) Geodetic Parameter Registry
Date (Publication)
2008-11-12
Cited responsible party
Organisation name Individual name Electronic mail address Role

European Petroleum Survey Group

EPSGadministrator@iogp.org

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urn:ogc:def:crs:EPSG::3031
Version

6.18.3

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NERC EDS UK Polar Data Centre

PDCServiceDesk@bas.ac.uk

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 		https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=f2dfeda9-bf44-4ef5-89a3-ee5e434a385c

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Methodology:

The multibeam-bathymetric grids were compiled from a variety of data sources. Multibeam echosounder (MBES) data used are from 12 scientific cruises undertaken by British Antarctic Survey (BAS), Alfred Wegener Institute (AWI), California Institute of Technology (Caltech), Stanford University, University of East Anglia, Lamont-Doherty Earth Observatory of Columbia University, the Korean Polar Research Institute (KOPRI), and Rice University. The complete list of cruises can be found as Table 1 in the reference paper (Hogan et al., 2020). MBES sounding data were cleaned during each cruise and then collated and gridded using the "mbgrid" program of MB-System. The grid was produced using the following mbgrid command parameters from MB-system version 5.6002: "-R-110/-100/-75.5/-74 -E50/50! -F1 -Jepsg3031 -A2 -C0 -V". This uses a Gaussian weighted mean filter algorithm. Additional parameter -G4 used to create ESRI-format ascii grids. Additional obvious outliers were removed from the individual sounding datasets at this stage and the data were re-gridded. This iterative process was repeated until a clean combined dataset was produced. For the interpolated 50-m grid, a small amount of interpolation was applied to fill data gaps up to 300 m away from cells with real sounding data in the "southASE_mbes_50m_interp.asc" grid using the parameter -C3/1. Here, values are interpolated up to three grid cells from the nearest data point only if additional data are found in two opposite directions.



Grids are created in projection WGS84 Antarctic Polar Stereographic (epsg: 3031).





The complete list of the cruises used for the compilation is described below



* RRS James Clark Ross expeditions: JR179 (Larter, R.D , Hillenbrand, C-.D. , Graham, A.C.G., Smith, J.A.), JR294 (Abrahamsen, E.P., Heywood, K.A.)



* RV Nathaniel B. Palmer cruises: NBP99-02 (Anderson, J.B, Wellner, J.S.), NBP07-02 (Nitsche, F.O.), NBP09-01 (Nitsche, F.O), NBP19-01 (Thompson, A., Dunbar, R.), NBP19-02 (Hogan, K.A, Larter, R.D, Graham, A.C.G, Kirkham, J.D., Totten Minzoni, R, Clark, R., Fitzgerald, V.),



* RV Araon cruise: ANA02C (Hong, J.)



* RV Polarstern cruises: PS104 (Gohl, K.Hillenbrand, C-.D., Larter, R.D., Arndt, J.E., Gohl, K.), ANTXXIII/4 (Hillenbrand, C-.D., Gohl, K.) , ANTXXVI/3 (Hillenbrand, C-.D., Gohl, K.)

Data collection:

Please refer to the literature reference ( https://doi.org/10.5194/tc-2020-25) for full details on the instrumentation and data sources of the contributing datasets.

Data quality:

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".

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dataset
Date stamp
2020-07-20
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ISO 19115:2003(E)
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Organisation name Individual name Electronic mail address Role
NERC EDS UK Polar Data Centre

polardatacentre@bas.ac.uk

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Keywords

Coastal bathymetry ITGC Multibeam Pine Island Bay Southern Amundsen Sea Embayment Thwaites Glacier Thwaites Ice Shelf
GEMET - INSPIRE themes, version 1.0

Oceanographic geographical features
Global Change Master Directory (GCMD) Science Keywords

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


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