50%, but integral and angolar characteristics were tlie lowest 

 (K = 12-13;-Tos Y = 0.77-0.78; x,, , = 44; R,, , = 0.135. 

 Unfortunately, no water assays were taken at intermediate 

 stations. At Station 32, water from the horizon subsurface 

 ma.ximum manifested such integral characteristics of light 

 scattering that are typical of diatomic particulates. This 

 phenomenon can be attributed to the Anadyr River effluence. 

 At Stations 41 and 42 in the Gulf of Anadyr, the transmittance 

 structure was rather primitive; the upper 15-25-m-thick layer 

 was occupied with clear water (e ;: 0.2-0.3 m ' ), and the lower 

 one was more cloudy (e = 0.5-0.7 m '). 



Bering Sea Northern Region 



Figures 5-9 illustrate the field of transmittance as seen in 

 the sections of the Bering Sea northern region. Clear water 

 flows through the surface layer at Stations 93, 101, and 103, 

 then runs deeper to 20-25 m ( section 5 ) and flows to the lower 

 part of the right side of the Bering Strait. In the central and 

 western parts of the sections, water turbidity increases up to 

 0.5-0.7 m '; the subsurface maximum of particulates, which 

 can be traced on horizons 10-20 m, displaces westward with 

 increasing latitude. The integral and angular characteristics of 

 all assays, taken from subsurface and surface water, have the 

 values that are typical of diatom particulates. Note that in the 



Bering Strait, turbid water with similar characteristics flows 

 only on the left side. 



Very turbid water was observed in the upper layer of the 

 right side of the strait (section 6), whence it could be traced 

 further to the western part of section 5. This water gradually 

 deepens with decreasing latitude and, in sections 3 and 4, it can 

 be detected only on bed horizons. Its angular and integral 

 characteristics sharply differ (K - 50-60; cos y = 0.91-0.92; 

 X 1 1 1 = 37^5; R, , , = 0. 1 1 -0. 1 2 ) from integral characteristics of 

 light scattering in diatom particulates. Here the relative 

 content of fine fraction comprised 20-30%, with both absolute 

 and relative maximum being on horizon 10 at Station 64. 



It is interesting to note that in section 2, cloudy water near 

 the bed (see hatched e >1 m ') is of another nature. From 

 isolines 0.9-9.9, it appears that cloudy water is associated with 

 overlying productive waters. Moreover, assaying at Station 

 104 (horizon 26 m) gives a totality of integral characteristics 

 that correlate with such waters. It is quite possible that it is the 

 divergence of flows, flowing around St. Lawrence Island, that 

 caused local features with water transmittance structure typical 

 of zones where waters are rising. Typical of bottom waters in 

 this section is the distribution of chlorophylls (Fig. 10). Note 

 that clear water at the area of Station 103 is also characterized 

 by definitely lower values of Chi a. 



Station No. 

 (22) 



Fig. 4. Section I. (Station,s 25-19) Distribution ol chlorophyll <( (data from Robie t>f tj/.. Subchapter 5.2.1, this volume). 



141 



