Open AccessStudy of tidal effect on water mass stratification in Mahakam estuary using 3D hydrodynamic model
Author(s) -
R I Wiyani,
Idris Mandang,
S Mubarrok
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/618/1/012016
Subject(s) - estuary , delta , stratification (seeds) , salinity , tributary , oceanography , geology , hydrology (agriculture) , river delta , tidal river , tidal current , estuarine water circulation , environmental science , geography , geotechnical engineering , engineering , seed dormancy , botany , germination , cartography , aerospace engineering , biology , dormancy
Mahakam Delta is a delta with unique characteristic. As a result of the continuous sedimentation process, the delta can be said as a complex delta because it has dozens of tributaries that are interconnected and flow into the sea to their estuaries. Mahakam Delta estuary is a meeting place for mixing masses of water from freshwater rivers and high salinity rivers. The aim of this study is to determine the water column stratification seen from the salinity and temperature parameters in the Mahakam Delta estuary. This study uses the ECOMSED model which is run for 40 days (July 7 to Augustt 16, 2018) with tides and river discharge as the generating force. The simulation results show that stratification is predominantly influenced by differences in salinity between the layers. The strongest stratification is located in the northern Mahakam Delta line with a difference in salinity is 8 psu from surface to bottom layer.