I . INTRODUCTION 



A survey of two adjacent areas east of the Kamchatka Peninsula 

 was conducted by USS REHOBOTH (AGS-50) between June and September 

 1962. Location of the survey areas is shown in figure 1. 



The survey of these areas was part of NAVOCEANO Project 0-162, 

 a general investigation of geomagnetic, oceanographic, and bathy- 

 metric properties in the North Pacific Ocean. The geomagnetics 

 phase of this survey was conducted as part of an overall geophysi- 

 cal program to improve accuracy of magnetic data on charts, and 

 to provide information on underlying oceanic crustal features. 



Although this report deals primarily with the results of the 

 geomagnetic investigations, bathymetric data are included for 

 correlation with the magnetic data and to aid in geologic 

 interpretations . 



II. SURVEY OPERATIONS 



A. Conduct of Survey . 



Tracks in survey area "A" (figure 2) were generally run in 

 an east-west direction normal to the coast of the Kamchatka 

 Peninsula. Line spacing is approximately 7 miles in the southern 

 part of the area, and approximately 20 miles in the northern part. 

 Area coverage is most complete in the center of the area. 



In survey area "B" (figure 3), tracks are generally oriented 

 in a northwest-southeast direction with a line spacing of about 



