Open Access Digital Repository of Ministry of Earth Sciences, Government of India

The influence of mesoscale eddies on a commercial fishery in the coastal waters of the Andaman and Nicobar Islands, India

Arur, A and Krishnan, P and George, G and Goutham Bharathi, MP and Kaliyamoorthy, M and Hareef Baba Shaeb, K and Suryavanshi, AS and Kumar, TS and Joshi, AK (2014) The influence of mesoscale eddies on a commercial fishery in the coastal waters of the Andaman and Nicobar Islands, India. International Journal of Remote Sensing, 35 (17). pp. 6418-6443.

Full text not available from this repository.

Abstract

Mesoscale eddies enhance the productivity in a stratified coastal environment by upwelling. The seas around the Andaman and Nicobar Islands have been found to have frequent mesoscale eddy activity. Commercial fishing grounds coincide with upwelling areas associated with cyclonic and anticyclonic eddies and also with areas between two adjacent eddies. There are different eddy zones supporting different types of fishing gears and fish. The current study aims at identifying the different zones of mesoscale eddies in the Andaman Sea and compares the productivity and fishing activity in each of them. Data collected from 454 commercial fishing trips in the Andaman Sea along with maps of sea level anomaly and Moderate Resolution Imaging Spectroradiometer (MODIS) global level 3 mapped thermal infrared (IR) daytime sea surface temperature (SST) from the Aqua and Terra satellites were used for the study. Known upwelling areas such as the periphery of anticyclonic and the core of cyclonic eddies showed higher catches in longlines, ring seines among the fishing gears, and among all the fish species groups. Downwelling areas such as the periphery of cyclonic and the core of anticyclonic eddies showed lower catches with ring seines and the fish species groups. Areas in between adjacent eddies were explored in this study and the fish captures in such areas were found to be different with types of fishing and the target fish group. The study shows results that link eddy activity with the performance of a fishery.

Item Type: Article
Additional Information: Copyright of this article belongs to Taylor & Francis.
Uncontrolled Keywords: Coastal waters; Commercial fisheries; Mesoscale eddy, coastal water; commercial activity; fishing; fishing gear; mesoscale eddy; MODIS; sea level change; sea surface temperature; upwelling, Andaman Sea; Andamans and Nicobars; Indian Ocean; Nicobars
Subjects: Oceanography > oceanography
Depositing User: INCOIS Library
Date Deposited: 08 Nov 2014 19:43
Last Modified: 08 Nov 2014 19:43
URI: http://moeseprints.incois.gov.in/id/eprint/848

Actions (login required)

View Item View Item