Marine geological investigation of Edward VIII Gulf, Kemp Coast, East Antarctica

Isabel A. Dove; Amy Leventer; Meredith J. Metcalf; Stefanie A. Brachfeld; Robert B. Dunbar; Patricia Manley; Amelia E. Shevenell; Richard W. Murray; Matthew Hommeyer; Kelly A. Kryc; Natalie McLenaghan; Fiona Taylor; Bruce A. Huber

doi:10.1017/S0954102020000097

Marine geological investigation of Edward VIII Gulf, Kemp Coast, East Antarctica

Isabel A. Dove, Amy Leventer, Meredith J. Metcalf, Stefanie A. Brachfeld, Robert B. Dunbar, Patricia Manley, Amelia E. Shevenell, Richard W. Murray, Matthew Hommeyer, Kelly A. Kryc, Natalie McLenaghan, Fiona Taylor, Bruce A. Huber

Earth and Environmental Studies

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

A physical oceanographic, geophysical and marine geological survey of Edward VIII Gulf, Kemp Coast, collected data from conductivity-temperature-depth casts, multi-beam bathymetric swath mapping and 3.5 kHz sub-bottom surveying. Modified circumpolar deep water (mCDW) is observed in Edward VIII Gulf, as well as notable bathymetric features including mega-scale glacial lineations and a 1750 m-deep trough. Sedimentological, geochemical, rock-magnetic and micropalaeontological analysis of two kasten cores document regional palaeoclimate and palaeo-oceanographic conditions over the past 8000 years, with a warm period occurring from c. 8 to 4 ka and a shift to cooler conditions beginning at c. 4 ka and persisting until at least 0.9 ka. Sediment packages > 40 m thick within deep troughs in Edward VIII Gulf present potential targets for higher-resolution Holocene and deglacial climate studies. Despite the presence of mCDW on the shelf, inland bed topography consisting of highland terrain suggests the likelihood of relative stability of this sector of the East Antarctic Ice Sheet.

Original language	English
Pages (from-to)	210-222
Number of pages	13
Journal	Antarctic Science
Volume	32
Issue number	3
DOIs	https://doi.org/10.1017/S0954102020000097
State	Published - 1 Jun 2020

Keywords

East Antarctic Ice Sheet
Holocene
ice-sheet stability
mCDW
palaeoclimate
sediment cores

UN SDGs

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10.1017/S0954102020000097

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title = "Marine geological investigation of Edward VIII Gulf, Kemp Coast, East Antarctica",

abstract = "A physical oceanographic, geophysical and marine geological survey of Edward VIII Gulf, Kemp Coast, collected data from conductivity-temperature-depth casts, multi-beam bathymetric swath mapping and 3.5 kHz sub-bottom surveying. Modified circumpolar deep water (mCDW) is observed in Edward VIII Gulf, as well as notable bathymetric features including mega-scale glacial lineations and a 1750 m-deep trough. Sedimentological, geochemical, rock-magnetic and micropalaeontological analysis of two kasten cores document regional palaeoclimate and palaeo-oceanographic conditions over the past 8000 years, with a warm period occurring from c. 8 to 4 ka and a shift to cooler conditions beginning at c. 4 ka and persisting until at least 0.9 ka. Sediment packages > 40 m thick within deep troughs in Edward VIII Gulf present potential targets for higher-resolution Holocene and deglacial climate studies. Despite the presence of mCDW on the shelf, inland bed topography consisting of highland terrain suggests the likelihood of relative stability of this sector of the East Antarctic Ice Sheet.",

keywords = "East Antarctic Ice Sheet, Holocene, ice-sheet stability, mCDW, palaeoclimate, sediment cores",

author = "Dove, {Isabel A.} and Amy Leventer and Metcalf, {Meredith J.} and Brachfeld, {Stefanie A.} and Dunbar, {Robert B.} and Patricia Manley and Shevenell, {Amelia E.} and Murray, {Richard W.} and Matthew Hommeyer and Kryc, {Kelly A.} and Natalie McLenaghan and Fiona Taylor and Huber, {Bruce A.}",

note = "Publisher Copyright: {\textcopyright} Copyright Antarctic Science Ltd 2020.",

year = "2020",

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doi = "10.1017/S0954102020000097",

language = "English",

volume = "32",

pages = "210--222",

journal = "Antarctic Science",

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TY - JOUR

T1 - Marine geological investigation of Edward VIII Gulf, Kemp Coast, East Antarctica

AU - Dove, Isabel A.

AU - Leventer, Amy

AU - Metcalf, Meredith J.

AU - Brachfeld, Stefanie A.

AU - Dunbar, Robert B.

AU - Manley, Patricia

AU - Shevenell, Amelia E.

AU - Murray, Richard W.

AU - Hommeyer, Matthew

AU - Kryc, Kelly A.

AU - McLenaghan, Natalie

AU - Taylor, Fiona

AU - Huber, Bruce A.

PY - 2020/6/1

Y1 - 2020/6/1

N2 - A physical oceanographic, geophysical and marine geological survey of Edward VIII Gulf, Kemp Coast, collected data from conductivity-temperature-depth casts, multi-beam bathymetric swath mapping and 3.5 kHz sub-bottom surveying. Modified circumpolar deep water (mCDW) is observed in Edward VIII Gulf, as well as notable bathymetric features including mega-scale glacial lineations and a 1750 m-deep trough. Sedimentological, geochemical, rock-magnetic and micropalaeontological analysis of two kasten cores document regional palaeoclimate and palaeo-oceanographic conditions over the past 8000 years, with a warm period occurring from c. 8 to 4 ka and a shift to cooler conditions beginning at c. 4 ka and persisting until at least 0.9 ka. Sediment packages > 40 m thick within deep troughs in Edward VIII Gulf present potential targets for higher-resolution Holocene and deglacial climate studies. Despite the presence of mCDW on the shelf, inland bed topography consisting of highland terrain suggests the likelihood of relative stability of this sector of the East Antarctic Ice Sheet.

AB - A physical oceanographic, geophysical and marine geological survey of Edward VIII Gulf, Kemp Coast, collected data from conductivity-temperature-depth casts, multi-beam bathymetric swath mapping and 3.5 kHz sub-bottom surveying. Modified circumpolar deep water (mCDW) is observed in Edward VIII Gulf, as well as notable bathymetric features including mega-scale glacial lineations and a 1750 m-deep trough. Sedimentological, geochemical, rock-magnetic and micropalaeontological analysis of two kasten cores document regional palaeoclimate and palaeo-oceanographic conditions over the past 8000 years, with a warm period occurring from c. 8 to 4 ka and a shift to cooler conditions beginning at c. 4 ka and persisting until at least 0.9 ka. Sediment packages > 40 m thick within deep troughs in Edward VIII Gulf present potential targets for higher-resolution Holocene and deglacial climate studies. Despite the presence of mCDW on the shelf, inland bed topography consisting of highland terrain suggests the likelihood of relative stability of this sector of the East Antarctic Ice Sheet.

KW - East Antarctic Ice Sheet

KW - Holocene

KW - ice-sheet stability

KW - mCDW

KW - palaeoclimate

KW - sediment cores

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DO - 10.1017/S0954102020000097

M3 - Article

AN - SCOPUS:85081578297

SN - 0954-1020

VL - 32

SP - 210

EP - 222

JO - Antarctic Science

JF - Antarctic Science

IS - 3

ER -

Marine geological investigation of Edward VIII Gulf, Kemp Coast, East Antarctica

Abstract

Keywords

UN SDGs

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