FN Archimer Export Format
PT J
TI Sedimentation and sediment geochemistry in a tropical mangrove channel meander, Sungai Kerteh, Peninsular Malaysia
BT 
AF SHAARI, Hasrizal
   MOHD NASIR, Qatrunnada
   PAN, Hui-Juan
   MOHAMED, Che Abd Rahim
   YUSOFF, Abdul Hafidz
   WAN MOHD KHALIK, Wan Mohd Afiq
   NAIM, Erick
   SETIAWAN, Riza Yuliratno
   ANTHONY, Edward J.
AS 1:1,2;2:1;3:3,4;4:5;5:6;6:1;7:2;8:7;9:8,9;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;
C1 Univ Malaysia Terengganu, Fac Sci & Marine Environm, Terengganu 21030, Malaysia.
   Univ Malaysia Terengganu, Inst Oceanog & Environm, Terengganu 21030, Malaysia.
   Natl Taiwan Ocean Univ, Inst Earth Sci, Coll Ocean Sci & Resource, Keelung, Taiwan.
   Natl Taiwan Ocean Univ, Coll Engn, Ctr Excellence Ocean Engn, Keelung, Taiwan.
   Univ Kebangsaan Malaysia, Fac Sci & Technol, Bangi 43600, Selangor, Malaysia.
   Univ Malaysia Kelantan, Fac Bioengn & Technol, Jeli 17600, Kelantan, Malaysia.
   Univ Gadjah Mada, Fac Agr, Dept Fisheries, Jl Flora Gd A4, Bulaksumur 55281, Yogyakarta, Indonesia.
   Aix Marseille Univ, Coll France, INRA, IRD,CEREGE,CNRS,UM 34, Aix En Provence, France.
   CNRS, USR LEEISA, Cayenne, French Guiana, French Guiana.
C2 UNIV MALAYSIA TERENGGANU, MALAYSIA
   UNIV MALAYSIA TERENGGANU, MALAYSIA
   UNIV NATL TAIWAN OCEAN NTOU, TAIWAN
   UNIV NATL TAIWAN OCEAN NTOU, TAIWAN
   UNIV KEBANGSAAN MALAYSIA, MALAYSIA
   UNIV MALAYSIA KELANTAN, MALAYSIA
   UNIV GADJAH MADA, INDONESIA
   UNIV AIX MARSEILLE, FRANCE
   CNRS, FRANCE
UM LEEISA
IN WOS Cotutelle UMR
   DOAJ
   copubli-france
   copubli-univ-france
   copubli-int-hors-europe
   copubli-sud
IF 3.604
TC 3
UR https://archimer.ifremer.fr/doc/00695/80721/84567.pdf
LA English
DT Article
DE ;Mangrove;Tidal channel meander;Mangrove geochemistry;Mangrove sedimentation
AB Tropical mangrove swamps are commonly characterized by dense networks of tidal channels that may show pronounced meandering and dendritic patterns. Channel meanders are sometimes accompanied by cut-offs, and, like classical fluvial meanders, record changes in hydrology and sedimentation over time. Channel meandering can, thus, be an important process that contributes to spatial and temporal variability in the preserved record of the sedimentology and geochemistry of mangrove sediments. The aim of this study is to highlight changes in channel meander sedimentation in response to a meander cut-off in a tropical mangrove swamp. Two short sediment cores were sampled, respectively from a point bar (core KR1, 122 cm) at the junction with the neck cut-off and inside the cut-off (core KR2, 98 cm) in the Sungai Kerteh mangroves of Peninsular Malaysia. The profile comparison was based on sediment characteristics, total organic carbon (TOC), and selected elements (Fe, Na, Mg, Mn, Ba, and Sr). A smaller standard deviation of mean grain size (MGS) was found at the point bar (4.37 +/- 0.51 phi) than in the cut-off (4.43 +/- 1.76 phi), indicating a difference in flow velocity between the two settings. In turn, these changes in grain size influence channel meander evolution via associated changes in TOC and heavy metals. In order to clarify these relationships, we used principal components analysis and factor analysis. An increased accumulation of selected elements and TOC at the cut-off site from a depth of similar to 60 cm to the core-top segment was probably associated with a slowing down of sediment settling. A higher TOC recorded in the cut-off (2.74 +/- 1.42%) compared to the point bar (1.14 +/- 0.46%) suggests a propensity for prolonged in situ accumulation of organic matter in the abandoned meander bend. This study provides grain size and sediment geochemical information that is consistent with patterns of active and inactive sedimentation in the meander bends of mangrove channels. 
PY 2020
PD SEP
SO Progress In Earth And Planetary Science
SN 2197-4284
PU Springer
VL 7
IS 1
UT 000566738200001
DI 10.1186/s40645-020-00362-y
ID 80721
ER

EF