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    Holocene evolution of the Chan May coastal embayment, central Vietnam: Changing coastal dynamics associated with decreasing rates of progradation possibly forced by mid- to late-Holocene sea-level changes

    Gouramanis, C. and Switzer, A.D. and Bristow, Charlie S. and Pham, D.T. and Mauz, B. and Hoang, Q.D. and Lam, D.D. and Soria, J.L.A. and Pile, J. and Chi, N.T.K and Nghiem, D. and Sloss, C. (2020) Holocene evolution of the Chan May coastal embayment, central Vietnam: Changing coastal dynamics associated with decreasing rates of progradation possibly forced by mid- to late-Holocene sea-level changes. Geomorphology , ISSN 0169-555X. (In Press)

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    Abstract

    Southeast Asian coastal environments are undergoing massive transformations with unprecedented population and infrastructure development. These transformations are occurring on a backdrop of intense natural and anthropogenic environmental change, which are increasing the risk to the burgeoning coastal population. Little is known about how central Vietnamese coastal environments have changed naturally since the mid-Holocene sea-level highstand and how recent anthropogenic change and sea-level variation have affected the coastal system. The Chan May embayment in central Vietnam allows us to examine how recent changes in both anthropogenic development and sea-level change have affected the coastline. The embayment preserves a series of prograding beach ridges and is subject to intense human pressures with the construction of a large economic and industrial park, and expansion of tourist facilities. Using ground penetrating radar and quartz optical dating we identify a switch from 6000 years of prograding beach ridges to transgressive dunes within the past century resulting in a decreasing rate of beach ridge progradation possibly in the last 100 years. The recent modes of sediment deposition through washovers and a transgressive dune indicates that coastal progradation has slowed and might have stopped.

    Metadata

    Item Type: Article
    Keyword(s) / Subject(s): Ground Penetrating Radar, Quartz optical stimulated luminescence dating, Typhoon, Sea level
    School: Birkbeck Schools and Departments > School of Science > Earth and Planetary Sciences
    Research Centres and Institutes: Earth and Planetary Sciences, Institute of
    Depositing User: Charlie Bristow
    Date Deposited: 29 May 2020 11:36
    Last Modified: 27 Jun 2020 11:15
    URI: http://eprints.bbk.ac.uk/id/eprint/32016

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