Intrusion of warm surface water beneath the McMurdo ice shelf, Antarctica

A. A. Stern, M. S. Dinniman, V. Zagorodnov, S. W. Tyler, D. M. Holland

Research output: Contribution to journalArticle

Abstract

Key Points There is an annual intrusion of warm water beneath the McMurdo ice shelf This intrusion causes elevated melt rates near to the ice front The intruding water is surface water originating west of the Ross Sea Polynya A 6 month temperature record collected below McMurdo Ice Shelf in 2011-2012 shows the temporal and spatial structure of the summertime warm water signal that penetrates beneath the ice shelf. The strength and duration of the warm water intrusion suggest an annual melt rate at Windless Bight of 0.71 m/yr. A Ross Sea numerical model demonstrates a seasonal warm water pathway leading from the west side of the Ross Sea Polynya (RSP) toward McMurdo Sound. The warm water enters McMurdo Sound, subducts beneath the ice shelf and causes accelerated summer melting. Temperature data were recorded using Distributed Temperature Sensing fiber optics, which gives a vertical temperature profile at a 1 m vertical resolution. This study constitutes one of the first successful implementations of this technology in Polar Regions.

Original languageEnglish (US)
Pages (from-to)7036-7048
Number of pages13
JournalJournal of Geophysical Research: Space Physics
Volume118
Issue number12
DOIs
StatePublished - 2013

Fingerprint

land ice
ice shelf
Ice
Antarctic regions
surface water
Surface waters
warm water
intrusion
Water
McMurdo sound
polynya
water
melt
Acoustic waves
temperature
fiber optics
Temperature
polar region
temperature profile
causes

Keywords

  • ice shelf melting
  • McMurdo Ice Shelf
  • McMurdo Sound
  • mode 3 intrusion

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Oceanography

Cite this

Intrusion of warm surface water beneath the McMurdo ice shelf, Antarctica. / Stern, A. A.; Dinniman, M. S.; Zagorodnov, V.; Tyler, S. W.; Holland, D. M.

In: Journal of Geophysical Research: Space Physics, Vol. 118, No. 12, 2013, p. 7036-7048.

Research output: Contribution to journalArticle

Stern, A. A. ; Dinniman, M. S. ; Zagorodnov, V. ; Tyler, S. W. ; Holland, D. M. / Intrusion of warm surface water beneath the McMurdo ice shelf, Antarctica. In: Journal of Geophysical Research: Space Physics. 2013 ; Vol. 118, No. 12. pp. 7036-7048.
@article{344a4cffd6064d61b32c1c8f91614d77,
title = "Intrusion of warm surface water beneath the McMurdo ice shelf, Antarctica",
abstract = "Key Points There is an annual intrusion of warm water beneath the McMurdo ice shelf This intrusion causes elevated melt rates near to the ice front The intruding water is surface water originating west of the Ross Sea Polynya A 6 month temperature record collected below McMurdo Ice Shelf in 2011-2012 shows the temporal and spatial structure of the summertime warm water signal that penetrates beneath the ice shelf. The strength and duration of the warm water intrusion suggest an annual melt rate at Windless Bight of 0.71 m/yr. A Ross Sea numerical model demonstrates a seasonal warm water pathway leading from the west side of the Ross Sea Polynya (RSP) toward McMurdo Sound. The warm water enters McMurdo Sound, subducts beneath the ice shelf and causes accelerated summer melting. Temperature data were recorded using Distributed Temperature Sensing fiber optics, which gives a vertical temperature profile at a 1 m vertical resolution. This study constitutes one of the first successful implementations of this technology in Polar Regions.",
keywords = "ice shelf melting, McMurdo Ice Shelf, McMurdo Sound, mode 3 intrusion",
author = "Stern, {A. A.} and Dinniman, {M. S.} and V. Zagorodnov and Tyler, {S. W.} and Holland, {D. M.}",
year = "2013",
doi = "10.1002/2013JC008842",
language = "English (US)",
volume = "118",
pages = "7036--7048",
journal = "Journal of Geophysical Research: Space Physics",
issn = "0148-0227",
number = "12",

}

TY - JOUR

T1 - Intrusion of warm surface water beneath the McMurdo ice shelf, Antarctica

AU - Stern, A. A.

AU - Dinniman, M. S.

AU - Zagorodnov, V.

AU - Tyler, S. W.

AU - Holland, D. M.

PY - 2013

Y1 - 2013

N2 - Key Points There is an annual intrusion of warm water beneath the McMurdo ice shelf This intrusion causes elevated melt rates near to the ice front The intruding water is surface water originating west of the Ross Sea Polynya A 6 month temperature record collected below McMurdo Ice Shelf in 2011-2012 shows the temporal and spatial structure of the summertime warm water signal that penetrates beneath the ice shelf. The strength and duration of the warm water intrusion suggest an annual melt rate at Windless Bight of 0.71 m/yr. A Ross Sea numerical model demonstrates a seasonal warm water pathway leading from the west side of the Ross Sea Polynya (RSP) toward McMurdo Sound. The warm water enters McMurdo Sound, subducts beneath the ice shelf and causes accelerated summer melting. Temperature data were recorded using Distributed Temperature Sensing fiber optics, which gives a vertical temperature profile at a 1 m vertical resolution. This study constitutes one of the first successful implementations of this technology in Polar Regions.

AB - Key Points There is an annual intrusion of warm water beneath the McMurdo ice shelf This intrusion causes elevated melt rates near to the ice front The intruding water is surface water originating west of the Ross Sea Polynya A 6 month temperature record collected below McMurdo Ice Shelf in 2011-2012 shows the temporal and spatial structure of the summertime warm water signal that penetrates beneath the ice shelf. The strength and duration of the warm water intrusion suggest an annual melt rate at Windless Bight of 0.71 m/yr. A Ross Sea numerical model demonstrates a seasonal warm water pathway leading from the west side of the Ross Sea Polynya (RSP) toward McMurdo Sound. The warm water enters McMurdo Sound, subducts beneath the ice shelf and causes accelerated summer melting. Temperature data were recorded using Distributed Temperature Sensing fiber optics, which gives a vertical temperature profile at a 1 m vertical resolution. This study constitutes one of the first successful implementations of this technology in Polar Regions.

KW - ice shelf melting

KW - McMurdo Ice Shelf

KW - McMurdo Sound

KW - mode 3 intrusion

UR - http://www.scopus.com/inward/record.url?scp=84893001398&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84893001398&partnerID=8YFLogxK

U2 - 10.1002/2013JC008842

DO - 10.1002/2013JC008842

M3 - Article

VL - 118

SP - 7036

EP - 7048

JO - Journal of Geophysical Research: Space Physics

JF - Journal of Geophysical Research: Space Physics

SN - 0148-0227

IS - 12

ER -