Group IV Humpback whale calving ground and population monitoring program 1995

해안선 측량업무와 관련된 성과물

(해양수산연구정보) NOAA, Terra/Aqua MODIS 등 위성관측을 통한 영상(이미지) 정보 제공

해안선 측량자료의 지역(지자체별) 통계자료

Bowhead whales were documented during their spring migration most years from 1979 to 1992 by biologists from NMML. This documentation consisted of flying aerial surveys in an area generally north and east of Barrow, Alaska, (avoiding whaling operations to the west) to record sighting information and conduct vertical photography of the whales. Flight lines were sometimes on systematic transects perpendicular to the nearshore ice edge, providing an offshore distribution of whales (used in calculating the proportion of the population within sighting range of ice-base observation teams). Often, the flight lines were not prescribed, following instead the openings in sea ice (leads) to maximize opportunities for finding whales. These latter surveys were designed primarily for aerial photography, which provides information on individual, recognizable whales and, through photogrammetry, provides lengths of whales.

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