抄録
Judging from all the available data obtained in the salmon season for the seven years from 1954 to 1960, salmon mother ships began their fishing operations at the end of May in those years, when prominent fishing grounds for salmon must have been formed in the area situated in latitude 46°N to 52°N and longitude 165°E to 170°E, where red and chum salmon were expected to come swarming about. There seems to have been two centers of the salmon fishing grounds; one, up in the north of the area and the other, down in the south.
In the area in the west longitude south of the Aleutian, mainly in the north of 50°N, there seemed to be every indication for red salmon to appear late in May of those seven years. Early in June salmon fishing grounds may have been appointed in two areas; one to the south of the Aleutian Islands, and the other, in the Bering Sea north of the Aleutian, with the center of the fishing grounds moving towards the Bering Sea in mid-June. Toward longitude area may have shifted to the east as far as 178°W, only those of minor importance still remaining early in July.
Up to the mid-June in those seven years in the area east of 165°E to the south of the Aleutian, there seems to have been a pretty large catch of red salmon, while in the area west of the same longitude more chum salmon were found than red salmon. Late in June, however, the main fishing grounds for red salmon are believed to have been turned to the area west of 165°E.
