Baseline information on both the modern processes operating on Antarctic beaches and the development of beach ridges in relation to the last glaciation ice retreat and isostatic rebound
Entry ID:
K043_1996_1998_NZ_1
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Summary
Abstract:
Beaches in McMurdo Sound have developed since the last glaciation when ice sheets were at their maximum. The weight of the overlying ice, depressed the land, which has slowly rebounded forming a series of beaches. To obtain a height above sea level today, it is necessary to know where sea level was on the raised beach ridges. The process of modern beach formation was investigated to help determine ... ancient sea levels around Antarctica in order to determine the extent and thickness of the last glaciation ice cap over Antarctica. Nine sites were investigated including Marble Point, Kolich Point, Spike Cape, Dunlop Island, Cape Bernacchi, Cape Royds, Cape Hallett, Cape Bird and Cape Barne. Surveys of the beaches were carried out by creating profiles of the beach shore, from the waters edge (or shore attached ice) up to the marine limit, with locations chosen to represent the widest possible range of energy environments on beaches in McMurdo Sound. Where possible profiles were surveyed to benchmarks which were linked to sea level via the tide gauge at Cape Roberts. These were a starting point to run a GPS base station to give approximate locations for each surface exposure sample site, site of each hole dug and other significant points. To resolve the surveys for mean sea level, lag times from Cape Roberts to various locations along the coast were calculated from tidal measurements taken at Cape Bernacchi and Cape Bird. The tidal curve constructed from these data was compared with the observed tidal data for Cape Roberts. Offshore surveys were also undertaken at Marble Point, Cape Royds and Cape Bird. In addition to surveying profiles, pits were excavated so that the stratigraphy and sedimentology of the beaches could be examined. Pits were located on survey profiles so they could be related to each other. Pits were described, measured and samples were removed for size analysis. The beach processes were observed in action including the effects of waves and ice when the sea ice has broken up and out. Optically stimulated luminescence samples were collected at Cape Bernacchi, Marble Point, Kolich Point, Spike Cape and Cape Barne. These require sandy material that has been sunlight, then been buried, such as in beach ridges in order to date sediment exposure. 
Related URL
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Description:
The PhD thesis is available online through the Victoria University of Wellington library website. A pdf copy of the thesis is available and the resulting publication follows the thesis in the same pdf.
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Geographic Coverage
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Spatial coordinates
Temporal Coverage
Start Date:
1997-01-01
Stop Date:
1997-02-01
Start Date:
1998-01-15
Stop Date:
1998-02-13
Start Date:
1998-12-30
Stop Date:
1999-01-28
Access Constraints
None
Use Constraints
The Trustees of Columbia University in the City of New York hold the copyright
of this dataset. Users are prohibited from any commercial, non-free resale, or
redistribution without explicit written permission from CIESIN. Users should
acknowledge CIESIN as the source used in the creation of any reports,
publications, new data sets, derived products, or services resulting from the
use of this data set. CIESIN also requests reprints of any publications and
notification of any redistributing efforts.
Data Set Progress
COMPLETE
Distribution
Distribution Media:
ONLINE HTTP
Distribution Format:
ARC/INFO Workspace
Fees:
0
Distribution Media:
ONLINE HTTP
Distribution Format:
PDF
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0
Distribution Media:
ONLINE HTTP
Distribution Format:
PNG
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Personnel
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TECHNICAL CONTACT
Phone:
+1 845-365-8920
Fax:
+1 845-365-8922
Email:
ciesin.info at ciesin.columbia.edu
Contact Address:
61 Route 9W, P.O. Box 1000
City:
Palisades
Province or State:
NY
Postal Code:
10964
Country:
USA
Role:
DIF AUTHOR
Phone:
+1 845-365-8988
Fax:
+1 845-365-8922
Email:
metadata at ciesin.columbia.edu
Contact Address:
61 Route 9W, P.O. Box 1000
City:
Palisades
Province or State:
New York
Postal Code:
10964
Country:
USA
Publications/References
Seirup, L., and G. Yetman (2005), U.S. Population Grids (Summary File 3), 2000: New Orleans Metropolitan Statistical Area, Alpha Version, NASA Socioeconomic Data and Applications Center (SEDAC), Palisades, NY, http://sedac.ciesin.columbia.edu/data/set/pend-summary-file3-2000-n... Seirup, L., and G. Yetman (2005), U.S. Population Grids (Summary File 1), 2000: Alabama, Louisiana, Mississippi and Texas, Alpha Version, NASA Socioeconomic Data and Applications Center (SEDAC), Palisades, NY, http://sedac.ciesin.columbia.edu/data/set/pend-summary-file1-2000-a... Seirup, L., and G. Yetman (2005), U.S. Population Grids (Summary File 1), 2000: Houston Metropolitan Statistical Area, Alpha Version, NASA Socioeconomic Data and Applications Center (SEDAC), Palisades, NY, http://sedac.ciesin.columbia.edu/data/set/pend-summary-file1-2000-h... Seirup, L., and G. Yetman (2005), U.S. Population Grids (Summary File 3), 2000: Alabama, Louisiana, and Mississippi, Alpha Version, NASA Socioeconomic Data and Applications Center (SEDAC), Palisades, NY, http://sedac.ciesin.columbia.edu/data/set/pend-summary-file3-2000-a...
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date:
2005-10-10
Last DIF Revision Date:
2013-02-14
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