Nineteenth and twentieth century sea-level changes in Tasmania and New Zealand

Gehrels, W. Roland, Callard, S. Louise, Moss, Patrick T., Marshall, William A., Blaauw, Maarten, Hunter, John, Milton, J. Andrew and Garnett, Mark H. (2012) Nineteenth and twentieth century sea-level changes in Tasmania and New Zealand. Earth and Planetary Science Letters, 315-316 94-102. doi:10.1016/j.epsl.2011.08.046

Author Gehrels, W. Roland
Callard, S. Louise
Moss, Patrick T.
Marshall, William A.
Blaauw, Maarten
Hunter, John
Milton, J. Andrew
Garnett, Mark H.
Title Nineteenth and twentieth century sea-level changes in Tasmania and New Zealand
Journal name Earth and Planetary Science Letters   Check publisher's open access policy
ISSN 0012-821X
Publication date 2012-01-15
Year available 2011
Sub-type Article (original research)
DOI 10.1016/j.epsl.2011.08.046
Volume 315-316
Start page 94
End page 102
Total pages 9
Editor Mark Siddall
Glenn Milne
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2012
Language eng
Formatted abstract
Positive deviations from linear sea-level trends represent important climate signals if they are persistent and geographically widespread. This paper documents rapid sea-level rise reconstructed from sedimentary records obtained from salt marshes in the Southwest Pacific region (Tasmania and New Zealand). A new late Holocene relative sea-level record from eastern Tasmania was dated by AMS14C (conventional, high precision and bomb-spike), 137Cs, 210Pb, stable Pb isotopic ratios, trace metals, pollen and charcoal analyses. Palaeosea-level positions were determined by foraminiferal analyses. Relative sea level in Tasmania was within half a metre of present sea level for much of the last 6000 yr. Between 1900 and 1950 relative sea level rose at an average rate of 4.2 ± 0.1 mm/yr. During the latter half of the 20th century the reconstructed rate of relative sea-level rise was 0.7 ± 0.6 mm/yr. Our study is consistent with a similar pattern of relative sea-level change recently reconstructed for southern New Zealand. The change in the rate of sea-level rise in the SW Pacific during the early 20th century was larger than in the North Atlantic and could suggest that northern hemisphere land-based ice was the most significant melt source for global sea-level rise.
Keyword Salt marsh
Proxy data
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 5 October 2011. Sea Level and Ice Sheet Evolution: A PALSEA Special Edition.

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Geography, Planning and Environmental Management Publications
Official 2012 Collection
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