Assessment of Oceanographic Trend and Ocean Health Index in The Gulf of Madura Achmad Syukri Raihan, Agus Saleh Atmadipoera, Yuli Naulita, Nabil Balbeid and Rinda Noviyanti E3S Web Conf., 483 (2024) 01012 Published online: 31 January 2024 DOI: 10.1051/e3sconf/202448301012