Jökull - 01.12.1969, Qupperneq 147

20° 15“
“normal”, i.e. that the Icelandic spring spawn-
ing herring migrated north along the west
coast ancl then eastwards towards the areas o££
the western north coast. In addition there is
also some anticlockwise migration of Icelandic
lierring £rom the southeast coast o£ the east
coast feeding grounds. During this period the
Norwegian herring generally followed the
southern boundary of the colcl East Iceland
current west and northwest towards the feed-
ing grounds o£f North- and East-Iceland. In
addition scattered concentrations of herring
were found to cross the tongue of colcl water
between Iceland and Jan Mayen. In some
years these concentrations crossing the tongue
of cold water had a very extensive area of
distribution and undoubtedly were a substan-
tial proportion of the entire migration. In
1963 the migration of the Icelandic herring
frorn the west failed for the first time. In this
connection one must bear two things in mind,
i.e. much lower sea temperature in the surface
layers off the western north coast and greatly
reduced abundance of the Icelandic spring
spawners as compared with previous years. It
should be noted that the herring did not re-
JÖKULL 19. ÁR 1 43