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A bathymetric compilation of the Cape Darnley region, East Antarctica

Published online by Cambridge University Press:  09 July 2021

Jodie Smith Open the ORCID record for Jodie Smith [Opens in a new window] ,
Yoshifumi Nogi Open the ORCID record for Yoshifumi Nogi [Opens in a new window] ,
Michele Spinoccia Open the ORCID record for Michele Spinoccia [Opens in a new window] ,
Boris Dorschel Open the ORCID record for Boris Dorschel [Opens in a new window]  and
Amy Leventer Open the ORCID record for Amy Leventer [Opens in a new window]
Jodie Smith*
Affiliation:
Geoscience Australia, GPO Box 378, Canberra ACT, 2601, Australia
Yoshifumi Nogi
Affiliation:
National Institute of Polar Research, 10-3 Midori-cho, Tachikawa-shi, Tokyo 190-8518, Japan
Michele Spinoccia
Affiliation:
Geoscience Australia, GPO Box 378, Canberra ACT, 2601, Australia
Boris Dorschel
Affiliation:
Alfred Wegener Institute, Van-Ronzelen-Str. 2, 27568Bremerhaven, Germany
Amy Leventer
Affiliation:
Colgate University, Geology Department, 13 Oak Drive, Hamilton, NY13346, USA
*
jodie.smith@ga.gov.au
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Abstract

The Cape Darnley region in East Antarctica has been an area of scientific interest for a variety of disciplines over the last three decades. The recent acquisition of several high-resolution bathymetry datasets enabled the compilation of a detailed regional bathymetry grid. We present a high-resolution bathymetric compilation of the Cape Darnley region in East Antarctica, including areas of the Mac.Robertson Land shelf, slope and adjacent deep sea. A variety of data, single-beam and multibeam swath bathymetry and digitized depths from nautical charts were sourced from numerous institutions. The 100 m-resolution gridded bathymetric dataset improves previous bathymetric representations of the region and enables visualization of the seafloor morphology in unprecedented detail. The bathymetry grid has been constructed using a layered hierarchy approach based on the source of each dataset. This data compilation forms important baseline information for a range of scientific applications and end users including oceanographers, glacial modellers, biologists and geologists. The compilation will aid numerical modelling of ocean circulation, reconstruction of palaeo-ice streams and refinement of ice-sheet models.

Keywords

bathymetry griddata compilationMac.Robertson shelfmultibeam bathymetry
Type
Physical Sciences
Information
Antarctic Science , Volume 33 , Issue 5 , October 2021 , pp. 548 - 559
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Copyright
Copyright © Antarctic Science Ltd 2021

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