BIGELOW: EXPLORATIONS OF THE COAST WATERS. 



179 



The temperature charts for the 40 meter and 100 meter-levels 

 show graphically how the frigid water off southern Nova Scotia is 

 separated from the cool waters of the western part of the Gulf of 

 Maine, by higher temperatures in its eastern half, the latter continu- 

 ous via the Eastern Channel, with the warm waters outside the con- 

 tinental slope. And the curve for 8° at 40 meters, 5° at 100 meters 

 shows that this comparatively warm water follows the northern coast 

 of the Gulf westward, beyond Penobscot Bay. The coastal character 

 of the cold water off southern Nova Scotia, and its seaward extension 

 to and including Le Have Bank, appears even more clearly on the 

 charts than in the profiles (p. 177). And they amplify the latter by 



Stations 



Fig. 13. — Temperature profile from Halifax (Station 10237) to Emerald Bank (Station 



10240), August 6-7, 1914. 



revealing the presence of a tongue of much higher temperature ap- 

 proaching the land off Halifax, apparently an offshoot from the still 

 warmer water outside the continental slope (Fig. 15, 16). 



I need only call further attention, on the 40 meter chart (Fig. 15), 

 to the cool (8°-10°) band already mentioned (p. 174) as dividing the 

 warmer (10-12°) water of Georges Bank obliquely, from northeast 

 to southwest. 



The ocean area deeper than 200 meters, on the part of the conti- 

 nental shelf under consideration, is confined to the deep basins of the 

 Gulf of Maine, to the Eastern Channel; and to two isolated basins 



