A 2d numerical model of salinity distribution pattern on the estuary of Jeneberang River

Hydrodynamic factors and aquatic environment at the mouth of the Jeneberang River are a major concern for the management of coastal areas and estuaries because can affect estuary utilization activities. This study uses a two-dimensional numerical model to reveal the dynamic and physical characteristics of the waters during the dry season at the mouth of the Jeneberang River. Measurements of tides, flow velocity, temperature and salinity were carried out prior to using numerical modeling to describe the tidal-driven flow circulation. The simulation model shows that the salinity distribution pattern follows the flow pattern so that it affects the distribution of the salinity distribution. The modeling results show a decrease in salinity downstream of the Janebarang River estuary. The upstream part has a relatively high salinity compared to the downstream part, between 36.4 PSU - 36.8 PSU. The downstream part of the water has a salinity level ranging from 34.5 PSU - 35 PSU showing a fairly dynamic salinity pattern. Based on the spatial distribution, this area is a mixed area with the farthest distance is between 850 meters to 1050 meters from the mouth of the estuary of the model domain area. © 2020 International Association of Lowland Technology. All rights reserved.