Zmienność granicy występowania lodów w rejonie Nowej Fundlandii w drugiej połowie sezonu lodowego 1997/98

In the article analysis of data concerning occurrence of ice in the vicinity of Newfoundland with reference to its usefulness for sea navigation is presented. Against background of seasonal changes in ice limits, changeability of iceberg and growlers limit from February to July of 1998 was analysed. Special note was take of large changeability of 'all known ice' limit transmitted by Ice Patrol (in several cases ice limit shifts) over 100 NM in 24 hours.