12-32. Which of the following statements about 

 central water masses is correct? 



1. The central water masses are normally 

 found in relatively high latitudes 



2. The source regions for central water 

 masses are between 35° and 40° N and 

 35° and 40° S 



3. The vertical extent of central water 

 masses is relatively deep 



4. The separation between the central 

 water mass in the Atlantic Ocean is 

 well defined by the equatorial water 



12-33. Central water masses in the South Atlan- 

 tic, Indian Ocean, and the western 

 Pacific are formed due to the similarity 

 in those areas of 



1. circulation only 



2. heating processes only 



3. cooling processes only 



4. circulation, and heating and cooling 

 processes 



12-34. Equatorial water masses are characterized 



In items 12-36 through 12-40, select from column 

 B the type of intermediate water mass likely to 

 be found at each location in column A. 



12-35. 



by 

 1. 

 2. 

 3. 

 4. 



high salinity 

 low salinity 

 high density 

 low density 



Which of the following statements about 

 intermediate water masses is INCORRECT? 



1. Intermediate water begins when a 

 water type at the surface sinks into 

 the ocean 



2. Gradual mixing of a sunken water type 

 with the waters above and below it 

 create the intermediate water mass 



3. Intermediate water lies below central 

 water masses 



4. The salinity of intermediate water 



is greater than the surrounding water 



A. Locations 



12-36. In the Straits of 

 Gibraltar in the 

 Atlantic Ocean 



12-37. Between 20° and 43° 

 in the North Pacific 



12-38. East of the Grand 



Banks of Newfoundland 



12-39. Between the South 



Pole and 10° south in 

 the Pacific Ocean 



12-40. At the convergence of 

 the Oyashio current 

 and the Kuroshio 

 Extension 



B. Types 



1. Arctic 



2. Antarctic 



3. Atlantic 

 Ocean 



4. Indian 

 Ocean 



12-41. Deep and bottom water masses are charac- 

 terized by 



1. high density 



2. high salinity 



3. low density 



4. low salinity 



12-42. The formation of deep and bottom water 

 masses occurs in 



1. equatorial waters 



2. the Indian Ocean and the Red Sea 



3. midlatitudes of both hemispheres 



4. Antarctic waters and the high lati- 

 tudes of the northern oceans 



12-43. The deep and bottom water circulation is 

 completed when those waters return to 

 Subarctic and Subantarctic regions as 

 intermediate waters having become 



1. more saline 



2. less saline 



3. more dense 



4. less dense 



12-44. Which command is the operational hub of 

 the Naval Weather Service system? 



1. FNWC Monterey, CA 



2. FWC Norfolk, VA 



3. FWF Suitland, MD 



4. NWSED Lakehurst, NJ 



12-45. Weather records should be mailed to NWSD 

 Asheville, NC no later than the 



1. 1st of the subsequent month 



2. 5th of the subsequent month 



3. 10th of the subsequent month 



4. 15th of the subsequent month 



73 



