Abandonment and rapid infilling of a tide-dominated distributary channel at 0.7 ka in the Mekong River Delta

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dc.contributor.authorGugliotta, Marcelloen_NZ
dc.contributor.authorSaito, Yoshikien_NZ
dc.contributor.authorTa, Thi Kim Oanhen_NZ
dc.contributor.authorNguyen, Van Lapen_NZ
dc.contributor.authorTamura, Toruen_NZ
dc.contributor.authorWang, Zhanghuaen_NZ
dc.contributor.authorLa Croix, Andrew D.en_NZ
dc.contributor.authorNakashima, Reien_NZ
dc.date.accessioned2021-05-26T23:25:01Z
dc.date.available2021-05-26T23:25:01Z
dc.date.issued2021en_NZ
dc.description.abstractThe Ba Lai distributary channel of the Mekong River Delta was abandoned and infilled with sediment during the Late Holocene, providing a unique opportunity to investigate the sediment fill, timing and mechanisms of channel abandonment in tide-dominated deltaic systems. Based on analysis and age dating of four sediment cores, we show that the channel was active since 2.6 ka and was abandoned at 0.7 ka as marked by the abrupt disappearance of the sand fraction and increase in organic matter and sediment accumulation rate. We estimate that the channel might have been filled in a time range of 45–263 years after detachment from the deltaic network, with sediment accumulation rates of centimetres to decimetres per year, rapidly storing approximately 600 Mt of organic-rich mud. We suggest that the channel was abandoned due to a sediment buildup favoured by an increase in regional sediment supply to the delta. This study highlights that mechanisms for abandonment and infilling of tide-dominated deltaic channels do not entirely fit widely used models developed for fluvial-dominated environments. Their abandonment might be driven by autogenic factors related to the river-tidal and deltaic dynamics and favoured by allogenic factors (e.g., human impact and/or climate change).</jats:p>en_NZ
dc.format.mimetypeapplication/pdf
dc.identifier.citationGugliotta, M., Saito, Y., Ta, T. K. O., Nguyen, V. L., Tamura, T., Wang, Z., … Nakashima, R. (2021). Abandonment and rapid infilling of a tide-dominated distributary channel at 0.7 ka in the Mekong River Delta. Scientific Reports, 11(1). https://doi.org/10.1038/s41598-021-90268-6en
dc.identifier.doi10.1038/s41598-021-90268-6en_NZ
dc.identifier.eissn2045-2322en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/14343
dc.language.isoenen_NZ
dc.publisherSpringer Science and Business Media LLCen_NZ
dc.relation.isPartOfScientific Reportsen_NZ
dc.rightsThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. © Te Author(s) 2021
dc.titleAbandonment and rapid infilling of a tide-dominated distributary channel at 0.7 ka in the Mekong River Deltaen_NZ
dc.typeJournal Article
pubs.elements-id261307
pubs.issue1en_NZ
pubs.organisational-group/Waikato
pubs.organisational-group/Waikato/2025 PBRF
pubs.organisational-group/Waikato/DHECS
pubs.organisational-group/Waikato/DHECS/2025 PBRF - DHEC
pubs.organisational-group/Waikato/DHECS/SCHS
pubs.organisational-group/Waikato/DHECS/SCHS/2025 PBRF - SCHS
pubs.organisational-group/Waikato/FSEN - Old
pubs.organisational-group/Waikato/FSEN - Old/School of Science
pubs.organisational-group/Waikato/FSEN - Old/School of Science/2018 PBRF - School of Science
pubs.owner.emailalacroix@waikato.ac.nz
pubs.owner.nameLa Croix, Andrew
pubs.publication-statusPublished onlineen_NZ
pubs.user.infoLa Croix, Andrew (alacroix@waikato.ac.nz)
pubs.volume11en_NZ
uow.identifier.article-no11040
uow.verification.statusunverified
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