Rapid Bathymetry Detection With Sentinel Application Platform (Snap) Using Sentinel Imagery 2a

Abstract

Indonesia is the largest archipelagic country where 77% of its territory encompasses coastlines, shallow waters to deep sea waters areas. One of the required important information for Indonesia particularly for protecting its rich marine habitat and supporting shalow-water navigation is bathymetry. Additionally, bathymetry information can be used to support several other purposes, such as shipping, determining the right area for ports, and determining coastal cultivation areas. Remote sensing technology has an important role to provide bathymetric information quickly and cover a wide area in an archipelagic country like Indonesia, mainly when field measurement is hindered by logistical issues due to the remoteness of target areas. This study attempts to contribute to the solution of the issue by performing bathymetry extraction using Sen2Coral algorithm available in Sentinel Application Platform (SNAP) image processing software. The specific purpose of this study is to rapidly derive bathymetry in shallow marine waters using Sentinel 2A data. The research location is in the islands of Putri, Melintang, Macan, Dolpin and located in Seribu Islands, Jakarta. The data used are Sentinel 2A imagery acquired on April 24, 2021, in situ batymetry and tidal data. The results showed that Sentinel 2A can produce a depth range of 0 – 30.64 meters. The accuracy of the calculated bathymetric using Sentinel 2A is 68%.