Application of Thresholding Method using Sentinel-1 for Shoreline Stability Analysis around Bangkalan Coast
Fahmi Arifin1, Ashari Wicaksono1,2*, and Aries Dwi Siswanto1,2

1Department of Marine Science, Universitas Trunojoyo Madura, Bangkalan, East Java, Indonesia
2Laboratory of Oceanography, Universitas Trunojoyo Madura, Bangkalan, East Java, Indonesia *ashari.wicaksono[at]trunojoyo.ac.id

Abstract

Shorelines change due to physical, natural, and artificial properties. Shoreline are dynamic and interesting to analysis, specially around Bangkalan coastal areas. Although the coastal characteristic is dominated by mud substrates, the dynamics of shoreline change in several locations show significant changes. Sentinel-1 imagery is an alternative for shoreline studies because it has high spatial resolution and temporal frequency and is applied to the thresholding method to separate land and water profiles. This study aims to analyze changes around the coastline in Bangkalan using Sentinel-1 imagery based on the thresholding method. The results of the analysis show that some areas along the coastline in Bangkalan have significant changes, both abrasion and accretion.

Keywords: bangkalan, sentinel-1, shoreline change, thresholding

Topic: Ocean Sciences