Figure 82. The chronological relationship of average dive duration, 



speed and number of dives for PTT #840 123 



Figure 83. A) The relationship of speed to average dive duration; 



B) number of dives vs average dive duration; and, 



C) speed vs number of dives for all PTTs 124 



Figure 84. A) The relationship of speed to average dive duration; 



B) number of dives vs average dive duration; and, 



C) speed vs number of dives for PTT #823 126 



Figure 85. A) the relationship of speed to average dive duration; 



B) number of dives vs average dive duration; and, 



C) speed vs number of dives for PTT #839 127 



Figure 86. A) the relationship of speed to average dive duration; 



B) number of dives vs average dive duration; and, 



C) speed vs number of dives for PTT #833 128 



Figure 87. A) the relationship of speed to average dive duration; 



B) number of dives vs average dive duration; and, 



C) speed vs number of dives for PTT #840 129 



Figure 88. Water temperature (°C) vs depth of dive (meters) for 



PTT #843 in the western Gulf of Maine (Oct/Nov. 1989) 130 



Figure 89. A map of the NW Atlantic showing the general 



circulation in the shelf and slope waters 

 (after McLellan, 1957) , 131 



Figure 90. NOAA satellite-monitored sea surface temperatures, 



9 September 1990, with track of PTT #839 

 (6-11 September 1990) 133 



Figure 91. NOAA satellite-monitored sea surface temperatures, composite 



image (18-24 September 1990), with track of PTT #823 (21-22 

 September 1990) 135 



Figure 92. NOAA satellite-monitored sea surface temperatures, 



16 October 1990, with track of PTT #823 (9-16 Oct., 1990) 136 



Figure 93. A "T" tag for possible application to bowhead whales in 



1992 143 



