TY - JOUR
T1 - Identification of Subsurface Water Flow Using Gradient Horizontal Gravity Data in Tanjung Priok and Koja, North Jakarta
AU - Ayu, Gita Puspa
AU - Rosid, M. Syamsu
AU - Kusuma, Fajar Bahari
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2019/12/18
Y1 - 2019/12/18
N2 - The presence of saline or salt water in the Jakarta groundwater aquifer is still widely debated by various geologists and groundwater experts. This study intends to identify the cause of the high salinity of groundwater at Tanjung Priok and Koja, North Jakarta. The First Horizontal Derivative (FHD) method of gravity data is applied to identify the direction of subsurface fluid flow. It is also supported by groundwater sample data and self potential (SP) data. The direction of fluid flow on the FHD contour map is indicated from low to high FHD value. From gravity data, Bouguer density values obtained in the study area were 2.12 gr/cm3. This study focuses on surface aquifers so that it is necessary to separate regional and residual anomalies. The results show that the direction of fluid flow is from north to south, there is a high FHD value that is distributed around the coordinates (709000, 9322000) which may indicate as the salt depositions of sea water intrusion.
AB - The presence of saline or salt water in the Jakarta groundwater aquifer is still widely debated by various geologists and groundwater experts. This study intends to identify the cause of the high salinity of groundwater at Tanjung Priok and Koja, North Jakarta. The First Horizontal Derivative (FHD) method of gravity data is applied to identify the direction of subsurface fluid flow. It is also supported by groundwater sample data and self potential (SP) data. The direction of fluid flow on the FHD contour map is indicated from low to high FHD value. From gravity data, Bouguer density values obtained in the study area were 2.12 gr/cm3. This study focuses on surface aquifers so that it is necessary to separate regional and residual anomalies. The results show that the direction of fluid flow is from north to south, there is a high FHD value that is distributed around the coordinates (709000, 9322000) which may indicate as the salt depositions of sea water intrusion.
UR - http://www.scopus.com/inward/record.url?scp=85078255590&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/1351/1/012093
DO - 10.1088/1742-6596/1351/1/012093
M3 - Conference article
AN - SCOPUS:85078255590
SN - 1742-6588
VL - 1351
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012093
T2 - Universitas Riau International Conference on Science and Environment 2019, URICSE 2019
Y2 - 10 September 2019
ER -