SPATIAL AND TEMPORAL DISTRIBUTION OF CHLOROPHYL-A AND ITS RELATION WITH WATER DYNAMIC OF KARIMATA STRAITS AND SURROUNDINGS

• Main Author: Chamidah, Nurul
• Format: Final Project
• Language: Indonesia
• Subjects: Geologi, hidrologi & meteorologi
• Online Access: https://digilib.itb.ac.id/gdl/view/47166
• Institution: Institut Teknologi Bandung

Karimata Strait is a mixture that connects the South China Sea and the Java Sea with an abundance of diverse nutrients. This study aims to examine the spatial and temporal distribution of chlorophyll-a and its relation with water dynamics of Karimata Strait and its surroundings. This research uses Aqua MODIS satellite image data, re-analysis of HYCOM (Hybrid Ocean Coordinate Model) data for surface currents and CCMP (Cross-Calibrated Multi-Platform) data for surface winds. Data analysis method is done by making spatial plots and monthly time series and climatology to see the characteristics of the distribution of chlorophylla concentrations in 2010-2015 at sea and river mouths and accompanied by influencing factors such as, wind, electric current, rainfall, river discharge, ENSO (El Niño-Southern Oscillation), and IOD (Indian Ocean Dipole). Based on the results obtained at a temporary concentration of chlorophyll-a in the sea determine high values in the west and east seasons with a range of values of 0.3 - 0.5 mg / m3. Meanwhile, the spatial concentration of chlorophyll-a is high in the immediate area due to biological and chemical processes of river mouths, and has a fluctuating value. The concentration of chlorophyll-a in the sea area has the same pattern as the current pattern and the higher concentration towards to Java Sea. The influence of high chlorophyll-a concentration seen from the influence of high rainfall can encourage phosphate and nitrate nutrients from river runoff to the sea. In addition, global phenomena such as La Nina and IOD (-) have a positive anomaly effect on chlorophyll-a concentration, as well as the El Nino phenomenon giving a negative anomaly on chlorophyll-a concentration.