414 



CLARK: ABYSSAL TEMPERATURES 



United States and British Columbia, -0.21°; in Bering Sea, 

 where depths greater than 2000 fathoms occur only in the western 

 part, the temperatures below 2000 fathoms are intermediate 

 between those off the northwestern United States and British 

 Columbia and those in the Gulf of Alaska, —0.15°. 



The temperatures between 1500 and 2000 fathoms show a 

 maximum of +0.80° off northern South America and southern 



TABLE I 



DEPTH (FATHOMS) 



Off Chile (45° 35' to 

 3S°0S' S.) 



Galapagos Islands. . . 



South and Central 

 America to Mexico 



West coast of Mexi- 

 co to 16° 46' N.... 



Mexico ; 18° 23' N. to 

 the Gulf of Cali- 

 fornia 



Gulf of California. . . 



Gulf of California to 

 32° N 



California; 32° to 

 33° 42' N 



33° 42' to 45° N 



45° to 55° N 



55° to 59° 19' N 



Bering Sea 



Maximum range in 

 Temperature 



500-750 



-0.20 (1) 



750-1000 



+0.93 



J- 1.22 

 +0.75 



+0.80 

 +0.50 



(3) 

 (8) 

 (2) 



(2) 

 (3) 



+0.42 (4) 



+ 1.51 



+0.38 



-0.46 



85 



0.91 



(12) 



(5) 



(10) 



(8) 



(12) 



1500-2000 



over 2000 



+0.25 (2) 



+ 1.40 (3) 



-0.04 (5) 



+0.70 (1) 



-0.36 .8) 



-0.37 (7) 



-0.69 (25) 



2?36 



9° 



?09 



+0.65 (2) 



+0.17 (9) 



-0.30 (5) 



-0.09 (10) 

 0.21 (20) 

 -0.15 (26) 



0?95 



Central America, and a second more strongly marked maximum 

 of +1.10° in the pocket-like Gulf of California. North of the 

 Gulf of California the readings are all below normal, varying 

 from -0.03° between 45° and 55° N. lat. to -0.23° in the Bering 

 Sea. It is interesting that the temperature off northern Mexico 

 and the southwestern United States (—0.10°) is approximately 

 identical with that from 55° to 59° N. lat. (-0.09°), though 

 the two localities are separated by a region showing a deficiency 

 only one third as great (—0.03°). 



