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http://dx.doi.org/10.3796/KSFOT.2019.55.4.356

The fishing grounds and frequency of appearance of Chinese fishing vessels obtained by analyzing AIS data in the south coast of Jeju Island  

KIM, Kwang-il (College of Ocean Sciences, Jeju National University)
LEE, Chang-heun (College of Ocean Sciences, Jeju National University)
AHN, Jang-young (College of Ocean Sciences, Jeju National University)
Publication Information
Journal of the Korean Society of Fisheries and Ocean Technology / v.55, no.4, 2019 , pp. 356-362 More about this Journal
Abstract
We collected AIS information on fishing vessels operating near Jeju Island, and analyzed appearance density of the Chinese fishing vessels and inferred the movements of the fishing grounds. AIS information was received from October 16, 2016 to October 16, 2017 and stored on a hard disk through a program called AisDecoder. Unauthorized fishing vessels within the Exclusive Fisheries Agreement Zone (EFAZ) operated near the EFAZ boundary, and the frequency of appearance of fishing vessels were high in the middle waters of Korea and Japan, 252 and 250 fishing zones. Chinese fishing vessels authorized to enter appeared scattered outside the Prohibiting Fishing Zone of the Large Trawlers (PFZLT), and the closer they were to the PFZLT boundary, the higher the appearance density. And the appearance of Chinese fishing vessels with a speed from 0 to 3 knots was mostly outside the EFAZ, showing high density in the waters close to the boundary between Korea and Japan. On the other hand, within the EFAZ, the frequency of appearance of Chinese fishing vessels was also low and scattered. The appearance of Chinese fishing vessels with a speed from 3 to 5 knots mostly shows some variability within the EFAZ, but the frequency of appearance was high and the density was high. The seasonal appearance of Chinese fishing vessels in the waters south of Jeju Island appeared in the southwest in the autumn and then moved south and southeast of Jeju Island in the winter, and in the spring and summer. They were considered going to other fishing grounds without fishing in the waters south of Jeju Island.
Keywords
AIS data; Frequency of appearance; Chinese fishing vessels; Fishing ground; Fisheries management; Exclusive economic zone;
Citations & Related Records
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