eCite Digital Repository
Nineteenth and twentieth century sea-level changes in Tasmania and New Zealand
Citation
Gehrels, WR and Callard, SL and Moss, PT and Marshall, WA and Blaauw, M and Hunter, J and Milton, JA and Garnett, MH, Nineteenth and twentieth century sea-level changes in Tasmania and New Zealand, Earth and Planetary Science Letters, 315 pp. 94-102. ISSN 0012-821X (2012) [Refereed Article]
Copyright Statement
2011 Elsevier B.V.
DOI: doi:10.1016/j.epsl.2011.08.046
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.
Item Details
Item Type: | Refereed Article |
---|---|
Keywords: | salt marsh, proxy data, foraminifera, Holocene, Anthropocene, Southwest Pacific |
Research Division: | Earth Sciences |
Research Group: | Oceanography |
Research Field: | Physical oceanography |
Objective Division: | Environmental Policy, Climate Change and Natural Hazards |
Objective Group: | Adaptation to climate change |
Objective Field: | Climate change adaptation measures (excl. ecosystem) |
UTAS Author: | Hunter, J (Dr John Hunter) |
ID Code: | 79896 |
Year Published: | 2012 |
Web of Science® Times Cited: | 44 |
Deposited By: | CRC-Antarctic Climate & Ecosystems |
Deposited On: | 2012-10-10 |
Last Modified: | 2017-10-31 |
Downloads: | 0 |
Repository Staff Only: item control page