f2dfeda9-bf44-4ef5-89a3-ee5e434a385c eng utf8 dataset dataset NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom polardatacentre@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information pointOfContact 2020-07-20 ISO 19115 Geographic Information - Metadata ISO 19115:2003(E) European Petroleum Survey Group (EPSG) Geodetic Parameter Registry 2008-11-12 publication European Petroleum Survey Group EPSGadministrator@iogp.org https://www.epsg-registry.org/ EPSG Geodetic Parameter Dataset The EPSG Geodetic Parameter Dataset is a structured dataset of Coordinate Reference Systems and Coordinate Transformations, accessible through this online registry. information publisher urn:ogc:def:crs:EPSG::3031 6.18.3 A multibeam-bathymetric compilation for the southern Amundsen Sea shelf, 1999-2019 2020-07-20 creation 2020-07-20 revision 2020-07-20 publication 2020-07-20 released 1.0 https://doi.org/10.5285/f2dfeda9-bf44-4ef5-89a3-ee5e434a385c doi GB/NERC/BAS/PDC/01364 https://data.bas.ac.uk/ NE/S006664/1 award NE/J005770/1 award NE/J005703/1 award 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 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. No credit. completed Hogan, Kelly A. British Antarctic Survey Researcher author Larter, Robert D. British Antarctic Survey Researcher author Graham, Alastair G.C. College of Marine Science, University of South Florida Researcher author Nitsche, Frank O. Lamont-Doherty Earth Observatory, Columbia University Researcher author Kirkham, James D. British Antarctic Survey Researcher author Totten Minzoni, Rebecca Department of Geological Sciences, University of Alabama Researcher author Clark, Rachel Departmentof Earth and Atmospheric Sciences,University of Houston Researcher author Fitzgerald, Victoria Department of Geological Sciences, University of Alabama Researcher author Anderson, John B. Department of Earth Science, Rice University,Houston Researcher author Hillenbrand, Claus-Dieter British Antarctic Survey Researcher author Simkins, Lauren Department of Environmental Sciences, University of Virginia Researcher author Smith, James A. British Antarctic Survey Researcher author Gohl, Karsten Alfred-Wegener-Institut Helmholtz-Zentrum fur Polar und Meeresforschung Researcher author Arndt, Jan Erik Alfred-Wegener-Institute Researcher author Hong, Jongkuk Korea Polar Research Institute, Yeonsoo-gu, South Korea Researcher author Heywood, Karen J. University of East Anglia Researcher author Abrahamsen, E. Povl British Antarctic Survey Researcher author Thompson, Andrew F. Environmental Science and Engineering, California Institute of Technology Researcher author Dunbar, Rob Stanford University Researcher author Wellner, Julia S. Departmentof Earth and Atmospheric Sciences,University of Houston Researcher author NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom PDCServiceDesk@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information pointOfContact asNeeded completed EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Water Depth EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography theme Global Change Master Directory (GCMD) Science Keywords 2026-01-27 publication 23 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) Greenbelt MD United States of America https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher Coastal bathymetry ITGC Multibeam Pine Island Bay Southern Amundsen Sea Embayment Thwaites Glacier Thwaites Ice Shelf theme Amundsen Sea Embayment Antarctica Pine Island Bay Antarctica Pine Island Ice Shelf Antarctica Canisteo Peninsula Antarctica Crosson Ice Shelf Antarctica place Oceanographic geographical features theme GEMET - INSPIRE themes, version 1.0 2021-01-06 revision otherRestrictions no limitations to public access otherRestrictions no limitations license Open Government Licence v3.0 otherRestrictions This data is governed by the NERC Data Policy: https://www.ukri.org/who-we-are/nerc/our-policies-and-standards/nerc-data-policy/ otherRestrictions 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 otherRestrictions None. url url largerWorkCitation url url largerWorkCitation url url crossReference doi doi crossReference doi doi crossReference url url dependency textTable eng utf8 elevation geoscientificInformation oceans -110.0 -100.0 -75.5 -74.0 1999-01-01 2019-12-31 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. NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom PDCServiceDesk@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information distributor text/plain application/x-hdf bytes 568328192 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=f2dfeda9-bf44-4ef5-89a3-ee5e434a385c WWW:LINK-1.0-http--link Get Data Download data download bytes 568328192 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=f2dfeda9-bf44-4ef5-89a3-ee5e434a385c WWW:LINK-1.0-http--link Get Data Download data download dataset 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". asNeeded completed