Gehrels, W.R., Callard, S.L., Moss, P.T., Marshall, W.A., Blaauw, M., Hunter, J., Milton, J.A. and Garnett, M. (2012) Nineteenth and twentieth century sea-level changes in Tasmania and New Zealand. Earth and Planetary Science Letters, 315-16, pp. 94-102. (doi: 10.1016/j.epsl.2011.08.046)
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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 NewZealand). 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 sealevel in Tasmania was within half a metre of present sealevel for much of the last 6000 yr. Between 1900 and 1950 relative sealevel rose at an average rate of 4.2 ± 0.1 mm/yr. During the latter half of the 20thcentury 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-levelchange recently reconstructed for southern NewZealand. The change in the rate of sea-level rise in the SW Pacific during the early 20thcentury 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 Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Garnett, Dr Mark |
Authors: | Gehrels, W.R., Callard, S.L., Moss, P.T., Marshall, W.A., Blaauw, M., Hunter, J., Milton, J.A., and Garnett, M. |
College/School: | College of Science and Engineering > Scottish Universities Environmental Research Centre |
Journal Name: | Earth and Planetary Science Letters |
ISSN: | 0012-821X |
ISSN (Online): | 1385-013X |
Published Online: | 05 October 2011 |
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