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dc.contributor.authorDarby, SE
dc.contributor.authorLangdon, PG
dc.contributor.authorBest, JL
dc.contributor.authorLeyland, J
dc.contributor.authorHackney, CR
dc.contributor.authorMarti, M
dc.contributor.authorMorgan, PR
dc.contributor.authorBen, S
dc.contributor.authorAalto, R
dc.contributor.authorParsons, DR
dc.contributor.authorNicholas, AP
dc.contributor.authorLeng, MJ
dc.date.accessioned2020-05-04T09:28:21Z
dc.date.issued2020-04-08
dc.description.abstractWe provide evidence for a large-scale geomorphic event in Cambodia's great lake, the Tonlé Sap, during the middle Holocene. The present-day hydrology of the basin is dominated by an annual flood pulse where water from the Mekong River raises the lake level by c. 8 m during the monsoon season. We present new subsurface geophysical data, allied to new and past core studies, which unequivocally show a period of major mid-Holocene erosion across the entire Tonlé Sap basin that is coincident with establishment of the lake's flood pulse. We argue that this widespread erosion, which removed at least 1.2 m of sediment across the lake's extent, was triggered by up to three, likely interacting, processes: (1) base-level lowering due to mid-Holocene sea-level fall, leading to (2) capture of the Tonlé Sap drainage by the Mekong River, and (3) a drying climate that also reduced lake level. Longer-term landscape evolution was thus punctuated by a rapid, river capture- and base-level fall- induced, lake drainage that established the ecosystem that flourishes today. The scale of change induced by this mid-Holocene river capture event demonstrates the susceptibility of the Tonlé Sap lake to ongoing changes in local base-level and hydrology induced by anthropogenic activity, such as damming and sand mining, within the Mekong River Basin.en_GB
dc.description.sponsorshipNatural Environment Research Council (NERC)en_GB
dc.description.sponsorshipRoyal Geographical Societyen_GB
dc.identifier.citationVol. 236: 106265en_GB
dc.identifier.doi10.1016/j.quascirev.2020.106265
dc.identifier.grantnumberNE/JO21970/1en_GB
dc.identifier.grantnumberNE/JO21571/1en_GB
dc.identifier.grantnumberNE/JO21881/1en_GB
dc.identifier.urihttp://hdl.handle.net/10871/120911
dc.language.isoenen_GB
dc.publisherElsevieren_GB
dc.rights.embargoreasonUnder embargo until 8 April 2021 in compliance with publisher policy.en_GB
dc.rights©2020. This version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ en_GB
dc.subjectTonlé Sapen_GB
dc.subjectHoloceneen_GB
dc.subjectPaleogeographyen_GB
dc.subjectPaleolimnologyen_GB
dc.subjectSoutheastern Asiaen_GB
dc.titleDrainage and erosion of Cambodia's great lake in the middle-late Holocene: The combined role of climatic drying, base-level fall and river captureen_GB
dc.typeArticleen_GB
dc.date.available2020-05-04T09:28:21Z
dc.identifier.issn0277-3791
dc.descriptionThis is the author accepted manuscript. The final version is available from the publisher via the DOI in this recorden_GB
dc.identifier.journalQuaternary Science Reviewsen_GB
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/en_GB
dcterms.dateAccepted2020-03-07
rioxxterms.versionAMen_GB
rioxxterms.licenseref.startdate2020-03-07
rioxxterms.typeJournal Article/Reviewen_GB
refterms.dateFCD2020-05-04T09:23:41Z
refterms.versionFCDAM
refterms.panelCen_GB


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©2020. This version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ 
Except where otherwise noted, this item's licence is described as ©2020. This version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/