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| Titel |
Sea level trend and variability in the Singapore Strait |
| VerfasserIn |
P. Tkalich, P. Vethamony, Q.-H. Luu, M. T. Babu |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1812-0784
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| Digitales Dokument |
URL |
| Erschienen |
In: Ocean Science ; 9, no. 2 ; Nr. 9, no. 2 (2013-03-08), S.293-300 |
| Datensatznummer |
250018037
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| Publikation (Nr.) |
 copernicus.org/os-9-293-2013.pdf |
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| Zusammenfassung |
| Sea level in the Singapore Strait (SS) exhibits response to various scale
phenomena, from local to global. Longest tide gauge records in SS are
analysed to derive local sea level trend and annual, inter-annual and
multi-decadal sea level variability, which then are attributed to regional
and global phenomena. Annual data gaps are reconstructed using functions
correlating sea level variability with ENSO. At annual scale, sea level
anomalies in SS are (quasi-periodic) monsoon-driven, of the order
of ±20 cm, the highest during northeast monsoon and the lowest during
southwest monsoon. Interannual regional sea level drops are associated with
El Niño events, while the rises are correlated with La Niña episodes;
both variations are in the range of ±5 cm. At multi-decadal scale,
annual measured sea levels in SS are varying with global mean sea level,
rising at the rate 1.2–1.7 mm yr−1 for 1975–2009,
1.8–2.3 mm yr−1 for 1984–2009 and 1.9–4.6 mm yr−1 for
1993–2009. When SS rates are compared with the global trends (2.0, 2.4 and
2.8 mm yr−1, respectively) derived from tide gauge measurements for
the same periods, they are smaller in
the earlier era and
considerably larger in the recent one. Taking into account the first estimate
of land subsidence rate, 1–1.5 mm yr−1 in Singapore, the recent trend
of absolute sea level rise in SS follows regional tendency. |
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