b. The Khatanga-Anabar Fluvia l Plume. Available station 

 coverage and the proximity of the Khatanga and Anabar Rivers necessitate 

 a combined treatment of their runoff effects. No average annual 

 drainage estimates are cited by L'vovich for either river, but drainage 

 area and length for both are listed in table I, The discharge configuration 

 from the two rivers will be termed the Khatanga-Anabar plume, and 

 no attempt will be made to describe individual contributions. 



Khatanga-Anabar plume description on the basis of observed 

 temperature and salinity distribution is possible to a lesser extent 

 than in the case of the Lena River. Plume definition based on temperature 

 is limited, but salinity serves to give a first approximation of 

 lateral and vertical plume limits. 



(1) Temperature Distribution . Temperature generally 

 did not serve to define the extent of Khatanga-Anabar River water 

 distribution during the NORTHWIND survey in the Laptev Sea. Some 

 suggestion of river effluent distribution can be seen in the interpreted 

 surface -0.5"C isotherm shown in figure 9. Nearly all temperatures 

 observed below the surface in the vicinity of the Anabar River were 

 less than -O.S^C and did not suggest plume delineation. 



(2) Salinity Distribution . Surface salinities less 

 than 10 %o were noted north of the Anabar River on stations 162 

 and 167, and salinities less than 20 %„ were noted on all other 

 stations in the area except station 168. Surface salinity effects 



-73 KHATANGA. '. 



ESTUARY • ■ ■ ■ ■ . . ^ 



■ ANABAR RIVER : . .■ . 



110 115 

 I I I 1 I I I I \ 1 1 1 L 



Figure 12. Interpreted distribution of the Khatanga-Anabar fluvial plume as defined by the 15 and 

 205i,„ isohalines at depths of 5 and 10 meters. 



18 



