Mapping potential fishing zones based on sea surface temperature and Chlorophyll-A in the Waters of Aceh Besar, Indonesia

Muhammad Muhammad,Agus Widi Priana,Syarifah Meurah Yuni,Irwan Irwan,Ichsan Setiawan,Junaidi M Affan,Haekal Azief Haridhi,Muhammadar Muhammadar,M Irham,Syafruddin Syafruddin,Zulkarnain Zulkarnain,M.N Badu,N Fadli,H.A Haridhi,Z Md Nor,Muhammad Muhammad,D.H Yen

doi:10.1051/e3sconf/202233902002

Abstract

Utilization of potential fishery and marine resources is still not maximally used by fishermen. Sea surface temperatures and the spread of chlorophyll-a through remote sensing systems can be used as potential fishing zones. This study aims to determine potential fishing zones using geographic information systems through the distribution of sea surface temperatures and the value of chlorophyll-a concentrations in Aceh Besar waters which is expected to improve the sustainability of fishing efforts. This research was conducted in January-December 2019 using geographic information system by extracting from Aqua-MODIS satellite image with resolution of 4 km and sea surface temperature overlay method with chlorophyll-a concentration. The results found the highest sea surface temperature value was in April at 31.62°C and the lowest temperature was in December at 28.45°C. The highest average chlorophyll-a concentration in Aceh Besar waters was 1.53 mg/m3 in December and the lowest concentration of chlorophyll-a in June and September was 0.20 mg/m3. Suspected potential fishing zones during January to December 2019 were found as many as 62 potential fishing zones, namely in the Western, Northwest and Eastern waters of Aceh Besar. The most zones are in December as many as eight zones, namely in the Western, Northwest and East parts of Aceh Besar waters and the least found in July as many as one zone that is in the Western part of Aceh Besar waters. When compared to fishing operations areas, the potential fishing zone is in the western part of Aceh Besar waters.

Highlights

Aceh Besar Regency is the westernmost region after Sabang City
The distribution of sea surface temperatures in the waters of Aceh Besar from January to December 2019 based on the results of MODIS satellite image extraction has varying values
The conclusion of this research is that the highest sea surface temperature is in April, which is 31.62°C and the lowest temperature is in December, which is 28.45°C

Summary

Introduction

Aceh Besar Regency is the westernmost region after Sabang City. Aceh Besar Regency is located at coordinates 5.05° - 5.75° North Latitude and 94.99° - 95.93° East Longitude. To the north it is bordered by the Malacca Strait and Banda Aceh City, to the south by Aceh Jaya Regency, to the east by Pidie Regency, and to the west by the Indian Ocean. Aceh Besar Regency has a coastline of 296.16 km and a sea area of 1,351.01 km2 [1]. Aceh Besar District has a large potential for natural wealth, specially in the field of fisheries with a potential of around 5,158 tons/year [2]. The problem that is commonly faced in the utilization of fish resources is the existence of dynamic fishing areas, always changing and moving following changes in environmental parameters [3]

Objectives

Methods

Results

Conclusion