Mid to late Holocene sea-level reconstruction of Southeast Vietnam using beachrock and beach-ridge deposits

Stattegger, Karl; Tjallingii, Rik; Saito, Yoshiki; Michelli, Maximiliano; Thanh, Nguyen Trung; Wetzel, Andreas

doi:10.1016/j.gloplacha.2013.08.014

Cited by 95 publications

(47 citation statements)

References 43 publications

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“…The agreement between both model predictions after 8.8 ka BP emphasizes that the regional GIA is characterized by the same Maxwell viscoelastic rheology despite the different mantle viscosity profiles of the two models. Moreover, the good match between the intertidal deposits at the Cambodian lowlands (Tamura et al ., ) and beachrock deposits at Son Hài and Cà Ná (Stattegger et al ., ) suggests more uniform expressions of the GIA in this region after 8.2 ka BP. The position of the shoreline and Mekong River mouth remained relatively stable between 8.2 and 6.3 ka BP, after which delta progradation started (Ta et al ., ; Tamura et al ., ).…”

Section: Discussionmentioning

confidence: 99%

Rapid flooding of the southern Vietnam shelf during the early to mid‐Holocene

Tjallingii

Stattegger

Stocchi

et al. 2014

J Quaternary Science

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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 GIAmodel 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.

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Section: Discussionmentioning

confidence: 99%

Rapid flooding of the southern Vietnam shelf during the early to mid‐Holocene

Tjallingii

Stattegger

Stocchi

et al. 2014

J Quaternary Science

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“…Erginal et al, 2010;Stattegger et al, 2013;Mourtzas et al, 2014). Furthermore, the potential of beachrocks as a useful record of shore position has been suggested by Semeniuk and Searle (1987), while Cooper (1991) suggested they may preserve former shoreline morphology and alignment.…”

Section: Beachrock As Proxy To Assess the Mediterranean Coastal Changesmentioning

confidence: 98%

Tracking shoreline evolution in central Cyclades (Greece) using beachrocks

et al. 2017

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“…One of the largest in the world is the Mekong Delta, built out over the past 8000 years by deposition of river sediments (Stattegger et al 2013), with a subaqueous extent of about 94,000 km 2 , of which 49,100 km 2 is exposed subaerially (Ericson et al 2006;Hori and Saito 2008). On the delta floodplains of Vietnam, Hung and colleagues found that deposition rates averaged 6.9 kg m 22 or approximately 6 mm y 21 with both turbidity and deposition dropping substantially with distance from the channels (Hung et al 2014a(Hung et al , 2014b.…”

Section: Delta Morphodynamicsmentioning

confidence: 99%

Anticipated geomorphic impacts from Mekong basin dam construction

Rubin

Kondolf

Carling

2014

International Journal of River Basin Management

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The Mekong River is undergoing rapid dam construction. Seven mainstem dams are completed or under construction in China and 133 completed or proposed for the Lower Mekong River basin. We combined geomorphic assessments of the Mekong channel and delta with models of sediment trapping by reservoirs to forecast geomorphic change. We expect the biggest changes to occur along alluvial reaches, though stripping of thin sediment deposits in bedrock reaches may also have significant consequences for benthic invertebrates, fishes, and other aquatic organisms dependent on the presence of alluvium in the channel. If all dams are built as proposed, the resulting 96% reduction in sediment supply would have profound consequences on productivity of the river and persistence of the delta landform itself. Strategies to pass sediment past dams should be implemented to reduce the magnitude of sediment starvation and resulting impacts.

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Mid to late Holocene sea-level reconstruction of Southeast Vietnam using beachrock and beach-ridge deposits

Cited by 95 publications

References 43 publications

Rapid flooding of the southern Vietnam shelf during the early to mid‐Holocene

Rapid flooding of the southern Vietnam shelf during the early to mid‐Holocene

Tracking shoreline evolution in central Cyclades (Greece) using beachrocks

Anticipated geomorphic impacts from Mekong basin dam construction

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