Skip to Main content Skip to Navigation
Journal articles

Decadal evolution of a spit in the Baram river mouth in eastern Malaysia

Abstract : WestudiedanewlyformedspitintheBaramRivermouthinEasternMalaysiaandevaluatedtheeffects of climaticconditionsandhumaninterferenceoverthelastfourdecades(1974–2014).Thedevelopment of aspitduringadecade(1998–2008)anditsmaximumexpansionovertheperiod2005–2010isrelated to theerosionassociatedwithdeforestationandlandusechangesintheupstreamregion.Thedown- stream transportationoftheheavysedimentloadoccurredduringtheeventsofhigherprecipitationand flash floods. Therecentspitwasidentified forthe first timeasamud flat postthe flash flooding of January 2005.Itextendedtowardsthesouthwestoftherivermouthtill2010(sixfoldincreaseinarea from 2005to0.29km2) andgraduallydisintegratedoverthenext3years.Depositionalfeatureofcoarse sediments andorganicdebrisisclearlysupportedbythealternatingthicklayersinthetop25cmofthe three coresamples(C1–C3) collectedfromtheregion.Thenon-existenceof finer particlesclearlyin- dicates thesupremacyoflongshorecurrentsintheregioncarryingawaythe fines todeeperregions. Gradual disappearanceofthesandbarrierpost2011isduetothereductionintheamountofsediment load asaresultofreductioninrecentrainfallactivity,landuse/landcoverchangesmainlyasrefor- estation, strengtheningofpalmplantation(controllingsoilerosionintheriverbanks)intheupstream region. ThedominantNWwinddirectionduringthemajorpartoftheyearisalsooneofthefactorsfor the shiftindepositionalsequenceanditishelpedbythelongshorecurrentswhichleadtothespitbeing partially connectedtothemainland.
Complete list of metadata

https://hal.archives-ouvertes.fr/hal-03043124
Contributor : Saravanan Govindaraj Connect in order to contact the contributor
Submitted on : Monday, December 7, 2020 - 10:23:45 AM
Last modification on : Thursday, May 13, 2021 - 4:44:01 PM

Identifiers

Collections

Citation

R. Nagarajan, M.P. Jonathan, Priyadarsi Roy, G. Muthusankar, C. Lakshumanan. Decadal evolution of a spit in the Baram river mouth in eastern Malaysia. Continental Shelf Research, Elsevier, 2015, 105, pp.18-25. ⟨10.1016/j.csr.2015.06.006⟩. ⟨hal-03043124⟩

Share

Metrics

Record views

35