and back to Unimak Island. These surface -temperature pro- 

 files, together with charts indicating their location, are shown 

 in figures 40 and 41. The general change in surface tempera- 

 ture shown in these figures is similar to that found from 

 measurements taken from the USS NEREUS. The large local 

 temperature variations, however, are brought out in detail 

 by this presentation. 



Of particular interest is the relation between certain 

 marked temperature changes and the occurrence of fog. With 

 marked decreases in sea surface temperature, fog was en- 

 countered, but with increasing sea surface temperature,- the 

 fog dissipated. In one 4-hour period, there were three sharp 

 temperature minima (fig. 40), and in each case fog occurred. 

 The sharp maxima in temperature between these minima were 

 associated with a clearing of the fog conditions. Notations of 

 fog conditions, as well as of ice conditions, are marked along 

 the profile. The hydrographic data from all stations are pre- 

 sented in table VI. 

























































A 



i 















SKIRTING INTO 

 ICE BRASH ICE 





•"■ 



-jf\ 







FOG 





S\ 



OG 



u 







,/■ 



li 









I 





^v 







S FOG 

 LOPEN 





T 



4 





JOF ICE 





I 



f 





\ IfO 



3 







OPEN 

 -it 



T^oS 



N 



H 



V 



4_ 









r 





V 









riJlRREGULAR 



ICE 

 SIGHTED 



In 













FOG 









TFOG 







PROCEEDING 

 OUT OF ICE 















FOG 

 (VIS. 200 YDS.) 

















31 JUIY 







1 



1 AUG. 









Ic 



00 2 



100 2 



00 



100 08 



00 12 



00 1< 



00 



2000 2400 



0400 0800 1200 TIME 



Figure 40. Continuous water temperature recorded near the sea surface from a recording 

 bathythermograph on USS BOARFISH between Bering Strait and the ice pack. Note the rela- 

 tion between sharp breaks in the temperature profile and the occurrence of fog. 



180° 17C 



• 160° 



c ^ 



V0400 





/ 10 AUG 



N 



S 



!r~ 



0400 





8 AUG. 



r> 



0400 j 



( 



9 AUG. 



\ l/A 



0400 10 AUqV^ 



•^42' 

 uj40° 

 2 38" 



£34' 

 *■ 32' 



30' 



10 AUG. 



it 













9 ATK 













8 AUG. 



A 







|7AUG. 







nu 







\ 



^r 





<-N 



^\ 



s 













A„ 







CXJC 





Wi/ 









CXJC s 



ECURE 



3 





\ 





v v< 









/ 





\.l 



vv 



-^/ 



rx 





UN 



MAK 



ASS 















\ 





»\ 



ru 



ii 



in 



,/ 











\ 























V 







\ 



\ i 



^ 



J 







































} 





\ 















\ 





























r 



V 



1 









































i 





1 













1 



























































































0800 0400 2400 2000 1600 1200 OBOO 0400 2400 2000 1600 1200 0800 0400 2400 2000 1600 1200 0800 0400 2400 TIME 



(GCT) 



Figure 41. Continuous water temperature recorded near the sea surface from a recording 

 bathythermograph on USS BOARFISH between the ice pack and Aleutian Islands. 



