THE ICEBERGS STUDIED 



Six non-tabular icebergs were 

 studied. Five were classified 

 medium in size; one was small 

 (#620). Most icebergs did not 

 deteriorate enough to change size. 

 The numbers (e.g. #620) refer to 

 the sequential numbering system 

 that IIP uses to identify individual 

 icebergs during the course of the 

 ice season. These are the same 

 numbers used in archived IIP 

 iceberg data at the World Data 

 Center for Giaciology, Boulder, 

 Colorado. 



Although the icebergs did not 

 change size category during the 

 course of the study, all were 

 deteriorating rapidly. Because of 



the recurring presence of growlers 

 and bergy bits in the vicinity of all 

 icebergs except #620 and #744, 

 calving was assumed to be a 

 major factor in the cluster's 

 deterioration. Table E-3 describes 

 the amount of calved ice in the 

 vicinity of each iceberg during 

 daily sizing measurements. The 

 study could not document all 

 calving for any one iceberg since 

 no iceberg was observed around- 

 the-clock. However, two events 

 were documented: iceberg #784 

 on 19 June; and #747 on 21 June. 

 Because of the warm water 

 (greater than 3°C), the brash 

 melted between daily observa- 

 tions. Bergy bits and growlers 

 which did not fully melt between 

 observations were tracked (in one 



case up to 18 hours), to keep 

 calving statistics for the cluster 

 from being inflated. 



Only icebergs #785 and #787 

 appeared stable throughout the 

 study period. Stability in this 

 context meant that the iceberg 

 length and height constantly 

 decreased. Figure E-3 describes 

 the areal dimensions for these 

 icebergs at the beginning and end 

 of the study period. Most of the 

 icebergs changed shape during 

 the study, probably from rolling. 

 Iceberg #784 rolled while the 

 cutter was nearby on 19 June. In 

 this case, the rolling caused height 

 to double although length in- 

 creased insignificantly (5%). 



fog - observations obscured by dense fog 



(-) - no observation made during 24-hour period 



G - growler, which is less than 1m high and/or 5m long 



B - bergy bit, which is larger than a growler, but less than 5m high and/or 15m long 

 116 



