Exploring Subsurface Water Resources: A Dual Approach Using Gravity Anomalies and Electrical Properties to Track Aquifers and Recharge Areas Radhiyullah Armi (a*), Sabrian Tri Anda (b), Rachmad Almi Putra (b), Fajriani (b), Afrahun Naziah (b), M. Ari Fahril (b), Ida Ratna Nila (b)
a) Department of Physics, Science and Technology Faculty, Universitas Samudra
Jl, Prof. Dr. Syarief Thayeb, Meurandeh, Kec. Langsa Lama, Kota Langsa, Aceh 24416
*radhiyullah[at]unsam.ac.id
b) Department of Geophysics, Science and Technology Faculty, Universitas Samudra
Jl, Prof. Dr. Syarief Thayeb, Meurandeh, Kec. Langsa Lama, Kota Langsa, Aceh 24416
Abstract
The study addresses the gap in understanding the significant disparities in groundwater quality across Langsa City, where certain areas suffer from poor water quality, whereas others benefit from cleaner, uncontaminated water. Consequently, state-of-the-art methods, including the integration of satellite gravity data, geological surveys, and geoelectric measurements, are applied to thoroughly investigate the subsurface water resources. The primary purpose of this research is to identify the location of the main aquifers and delineate recharge zones, which are essential for understanding groundwater system of the city. To achieve this, the methodology involves the analysis of gravity anomalies and electrical properties of subsurface formations, combined with ongoing well water sampling. As a result, the study is expected to pinpoint key aquifers and recharge areas, thus providing critical insights into the structure and behavior of the groundwater. In conclusion, the findings underscore the need for sustainable water resource management, with implications including practical recommendations for local authorities to mitigate water quality degradation and prevent further land subsidence.
Keywords: Gravity anomaly, Resistivity, Aquifer investigation, Water resources
