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Rapid flooding of the southern Vietnam shelf during the early to mid-Holocene.
- Source :
- Journal of Quaternary Science; Aug2014, Vol. 29 Issue 6, p581-588, 8p
- Publication Year :
- 2014
-
Abstract
- ABSTRACT A new sea-level record derived from coastal deposits of the South Vietnam shelf covers the deglacial sea-level history between 13.0 and 9.0 ka BP. This record reveals a relatively constant rate of sea-level rise and matches well with model results based on the RSES-ANU global ice-sheet model. However, the sea-level observations reveal a significant discrepancy with model results based on the ICE-5G global ice-sheet model, which further questions the existence of Meltwater Pulse 1B The incised-valley deposits of the South Vietnam shelf also complete the deglacial coastal evolution of southern Vietnam. The regional sea-level records of the South Vietnam shelf, the Mekong Delta and the Cambodian lowlands reveal an offset of about 18 m between 9.0 and 8.2 ka BP. The shoreline retreat of more than 200 km related to this offset was mainly caused by the differential hydro-isostatic adjustment between the South Vietnam shelf and the Cambodian lowlands. However, the GIA-model results cannot fully explain this fast relative sea-level rise due to the topographic changes and, possibly, alternative melt-water sources not accounted for in the current models. [ABSTRACT FROM AUTHOR]
- Subjects :
- FLOODS
NATURAL disasters
FLOOD damage
SEA level
Subjects
Details
- Language :
- English
- ISSN :
- 02678179
- Volume :
- 29
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- Journal of Quaternary Science
- Publication Type :
- Academic Journal
- Accession number :
- 97411423
- Full Text :
- https://doi.org/10.1002/jqs.2731