The impact of Extreme ENSO-IOD on the Variability of Sea Surface Temperature and Chlorophyll-a in the Bone Gulf, Indonesia
Rachmat Hidayat*, Mukti Zainuddin, Safruddin, St Aisjah Farhum

Capture Fisheries Study Program, Faculty of Marine Science and Fisheries, Universitas Hasanuddin, Jl. Perintis Kemerdekaan Km 10, Makassar, South Sulawesi, Indonesia 90245

*rachmathidayat[at]unhas.ac.id

Abstract

The Bone Gulf is one of the waters with massive potential for fishery activities. The various oceanographic factors must be considered in supporting these activities. Sea Surface Temperature (SST) and Chlorophyll-a (SSC) are important indicators of every water phenomenon. Several studies have shown that these two parameters have a special relationship with ENSO and IOD events. This study investigates the variability of SST and SSC, which is influenced by seasonal cycles, IOD, and ENSO in semi-enclosed waters, especially in Bone Gulf. Data analysis uses remote sensing methods and spatial-temporal techniques for monthly time series data in the Bone Gulf. The results of this study show that the extreme ENSO-IOD anomaly will greatly affect the SST variability directly in the waters. Meanwhile, SSC needs a stronger relationship. However, the ENSO-IOD phenomenon could cause other phenomena, such as upwelling and downwelling, to affect water fertility levels. By understanding the impact of ENSO-IOD, this research is expected to be considered for managing marine resources.

Keywords: Bone Gulf- ENSO-IOD- SSC- SST- Water Phenomenon

Topic: Oceanography