FN Archimer Export Format
PT J
TI A Preliminary Study In Vertical Distribution Of Planktonic Foraminifera And Marine Ecological Conditions Of Simeulue Sub-Basin, Aceh, Indonesia
BT 
AF Nugroho, Septriono Hari
   Zaim, Yahdi
   Yulianto, Eko
   Rizal, Yan
   Kurniasih, Anis
   Putra, Purna Sulastya
   Adi Wibowo, Singgih Prasetyo
   Amar, Amar
AS 1:1,2;2:1;3:2;4:1;5:3;6:1,2;7:4;8:2;
FF 1:;2:;3:;4:;5:;6:;7:;8:;
C1 Department of Geological Engineering, Institut Teknologi Bandung, Jl. Ganesha No.10, Bandung, West Java, Indonesia
   Research Center for Geotechnology, National Research and Innovation Agency, JL. Sangkuriang, Bandung, West Java, Indonesia
   Department of Geological Engineering, Universitas Diponegoro, Jl. Prof. Sudarto, Semarang, Central Java, Indonesia
   Research Center for Oceanography, National Research and Innovation Agency, Jl. Pasir Putih Raya No.1, Northern Jakarta, Indonesia
C2 INST TEKNOL BANDUNG, INDONESIA
   NATL RES INNOV AGCY, INDONESIA
   UNIV DIPONEGORO, INDONESIA
   NATL RES INNOV AGCY, INDONESIA
TC 0
UR https://archimer.ifremer.fr/doc/00741/85352/90407.pdf
LA English
DT Article
CR IMAGES 4-MD111
   MD 122 / WEPAMA
BO Marion Dufresne
DE ;Planktonic foraminifera;abundance;diversity;marine ecology;Simeulue sub-basin
AB A marine sediment core EW17-09 (03¢ª 28¡¯358¡± latitude and 96¢ª 18¡¯788¡± longitude, 870 m water depth, 390 cm core length) was retrieved from the western Sumatra, Simeulue sub-basin, Indonesia. Simeulue sub-basin are situated in eastern Indian Ocean, western part of Aceh Province, which is one of the outer islands in Indonesia. This sub-basin is influenced by adjacent lands in response to tectonic and climate dynamics. The dynamics of marine ecological conditions in the past is an urgent need for providing an analogy to the changes in the future conditions. In this study, the ecological conditions were examined by identifying the vertical distribution of planktonic foraminifera assemblages. This preliminary study demonstrated the presence of Globigerinoides ruber, Neogloboquadrina dutertrei, Pulleniatina obliquiloculata, Globigerina calida calida, Globigerinoides elongates, Globigerinoides cyclostomus and Globigerinoides sacculiferus in the samples. The assemblages indicate warm water conditions prevailed in the Simeulue sub-basin during the deposition of the samples. However, subtle ecological changes might have occurred in response to the dynamic of thermocline layer. Cluster analysis of planktonic foraminifera abundance and diversity resulted in three groups showing different ecological conditions. Warm water conditions, high salinity, deeper thermocline with moderate sedimentation disturbance prevailed during the deposition of lower part of the core. Oligotropic water conditions with higher temperature, lower salinity, shallower thermocline layer, and moderate sedimentation disturbance predominated during the deposition of the middle part of the core. The paleooceanography conditions of the upper part of the core are comparable to the lower part. Nevertheless, there are a shoaling of the thermocline in the end of the period. These conditions may indicate an increase in upwelling fluctuations and may represent a change in the IOD-like mean state of the Indian Ocean. 
PY 2021
PD NOV
SO Bulletin Of The Geological Society Of Malaysia
SN 01266187
PU Geological Society of Malaysia
VL 72
BP 137
EP 149
DI 10.7186/bgsm72202111
ID 85352
ER

EF