Estimation of Upwelling Intensity in the Bali Strait from Remote Sensing Data
Adi Wijaya1, *, Eko Susilo1, Bayu Priyono1, Teguh Agustiadi1, Abu Bakar Sambah2, Umi Zakiyah2, Daduk Setyohadi2

1 Researcher, Balai Pengelolaan Informasi Sumberdaya Kelautan dan Perikanan, Ministry of Marine Affair and Fisheries, Jalan Seacorm, Jembrana, Bali.
2 Lecturer of Faculty of Fisheries and Marine Science, Universitas Brawijaya, Jalan Veteran No.1 Malang, East Java

Abstract

Spatial and temporal variations in the estimation of upwelling intensity in the Bali Strait were studied using remote sensing data. Observation time from March 2000 to October 2020. This study estimates the intensity of upwelling in the Bali Strait in the east monsoon related to the inter-annual cycle. Sea surface temperature and chlorophyll-a concentration were used to estimate the upwelling intensity. The results of this study indicate that the upwelling intensity is controlled by climate phenomena ENSO and IOD. In the positive IOD and El Nina periods the upwelling strength in the Bali Strait increased and in the negative IOD and La Nina periods the strength decreased.

Keywords: Bali Strait, ENSO, IOD, Intensity, Upwelling

Topic: Oseanografi (National)