Spatio-Temporal Detection Of Seawater Intrusion Using Satellite Data In Pekalongan City (Central Java)
Indira Wido Primadipta (a,b*), Asep Saepuloh (a), Rima Rachmayani (c)

a) Geological Engineering Study Program, Faculty of Earth Sciences and Technology, Bandung Institute of Technology, Bandung, Indonesia
*indira[at]maritim.go.id or indirawido[at]gmail.com
b) Coordinating Ministry for Maritime Affairs and Investment, Jakarta, Indonesia
c) Earth Science Study Program, Faculty of Earth Science and Technology, Bandung Institute of Technology, Bandung, Indonesia

Abstract

Seawater intrusion poses a critical threat to coastal environments, contaminating freshwater resources and jeopardizing agricultural productivity and human health. This study focuses on the coastal city of Pekalongan, Indonesia, where increasing groundwater salinity has become a pressing issue. To address this problem, we employ a combined remote sensing technique, which indirectly measure groundwater salinity by mapping saline soil through satellite imagery, with ground-based approach to characterize and monitor seawater intrusion dynamics.

Specific objectives include investigating the physicochemical properties of soil, including electrical conductivity, moisture content, and temperature, through in-situ measurements using a portable soil meter. Additionally, we will utilize Landsat 8 OLI satellite imagery to map the spatial and temporal distribution of seawater intrusion. By integrating these datasets, we aim to develop a comprehensive understanding of intrusion processes and their impacts on the local environment. The findings of this research will contribute to the development of effective strategies for mitigating seawater intrusion and protecting valuable groundwater resources in Pekalongan.

Keywords: Seawater intrusion- Pekalongan- Remote sensing- Soil properties- Spatial-temporal analysis

Topic: Interdisciplinary Earth Science and Technology