Identifying coastlines change in Tangerang Regency Indonesia through historical maps

Abstract

Indonesia was under Dutch colonial authority for several centuries, during which mapping activities were carried out to serve the interests of the ruling government. Indonesia possesses several historical maps with significant potential, although their utilization remains incomplete. This research aims to explore the possible applications of historical maps, particularly in the context of organizing historical coastlines. The historical maps included in this project originate from the years 1896, 1898, 1920, and 1944 and have undergone georeferencing and digitizing processes. The Digital Shoreline Analysis System (DSAS) utilizes the Net Shoreline Movement (NSM) and Linear Regression Rate (LRR) statistical techniques to assess shoreline changes. The outcome of this study is a cartographic representation of the alteration in the coastline of Tangerang Regency, accompanied by a graphical depiction of the shoreline's transformation. The accuracy of the results is compromised due to variations in historical maps originating from different time periods, resulting in differing geographical perspectives across authors. Consequently, the reliability of the accuracy is diminished. Nevertheless, these limits restrict the extent to which geography may be advanced based on each individual map.