Kolaborasi Tim Riset Geografi FMIPA UI dengan Pushidrosal dalam Ekspedisi Jala Citra 3 di Pulau Satonda

The Geography Research Team of FMIPA UI which participated in the Jala Citra 3 Expedition on Satonda Island was led by Dr.Eng. Masita Dwi Mandini Manessa. This activity was organized by the Naval Hydro-Oceanography Center (Pushidrosal) and involved ministries/institutions (BRIN, BMKG, and KKP) and related universities. This expedition had the theme "Revealing the Features of the Sumdera Floor and Characteristics of the Flores Sea Water Column for Shipping Safety, Defense, and Sustainable Marine Development".

The Geography Team on Satonda Island is a combination of UI Geography lecturers and students (Dr.Eng. Masita Dwi Mandini Manessa, Riza Putera, M.Sc., Anisya Feby Efriana, S.Sc., Farida Ayu, S.Sc., Kintan Maulidina, S.Sc., Alia Junisar Shafira, and Bima Sartha Yudha), Hasanuddin University students (Sahra Amalia), and BRIN representatives (Dino Gunawan, M.T. and Kuncoro Teguh Setiawan, M.Sc.).

The activity on Satonda Island lasted for 6 days from April 28 to May 3, 2023, aiming to map shallow water bathymetry and coral reef habitats in Satonda using the Satellite Derived Bathymetry (SDB) method with Multispectral UAV and Deep Learning. UAV technology is a trend in mapping coral reef ecosystems because satellite-based data has spatial and temporal limitations.

In this research activity, multispectral image collection measurements were carried out using a Multispectral UAV, Optical Properties data from shallow waters using the TriOS Ramses Spectrometer and Water Quality Profiler for validation of the water reflectance model, coral reef profiling using photo transects, and compilation of spectral libraries from vegetation on Satonda Island. The accuracy of the bathymetry prediction model was carried out with the support of the Pushidrosal team using Singlebeam and Multibeam Echo Sounder.