Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2018, Vol. 15, No. 7, pp. 35-42
Possibility for assessing the reliability of spatial information on bottom fish catch in Fishery Monitoring System on the basis of an integrated analysis of daily fishing report and satellite positioning data of fishing vessels
P.M. Vasilets
1 , D.A. Terentyev
1 , S.A. Korobov
1 , V.N. Pyrkov
2 , A.V. Solodilov
2 , A.Yu. Degay
2 1 Kamchatka Research Institute of Fisheries and Oceanography, Petropavlovsk-Kamchatsky, Russia
2 Space Research Institute RAS, Moscow, Russia
Accepted: 01.11.2018
DOI: 10.21046/2070-7401-2018-15-7-35-42
In the paper, an estimation of the reliability of spatial information about the catch of the bottom fish in the fishery monitoring system (FMS) is made based on comparison of daily reports and satellite positioning of the vessels. By the example of movement analysis of one of the vessels that carried out bottom trawl fishing during February 2018, it is shown that the use of automatic identification system (AIS) terminals as part of the ship’s technical means of FMS control allows increasing the frequency of vessel positioning approximately by seven times using the satellite FMS component. On the basis of relatively high frequency of satellite positioning, a comparison of fishing efforts for cod and flounder trawling in neighboring fishing zones is carried out. A significant excess for the test vessel of the declared catch per trawl effort in the West Bering Sea zone compared to the catch per the same effort in the Karaginsky subzone for cod (125 times) and flounder (970 times) was revealed. In view of the above, it is proposed to use video recording of catches to control ship daily reports. The possibility of automating the comparison of catch reports and satellite positional data carried out in the paper is also considered.
Keywords: Bering Sea, cod, flounder, bottom trawl, AIS, fishing statistics, verification of spatial information fishing
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