conditions for the Persian Gulf. Of course, surface samples 

 (shown on chart) aided Emery in his analyses of surface con- 

 ditions (Figures IV-1 and IV-2) . 



Blegvad's work was confined to the winter and early-spring 

 months and was concentrated in the eastern half of the Gulf. Since 

 his work was done as a supplement to a fishery investigation of the 

 Persian Gulf funded "by the Iranian Government, it may not have heen 

 appropriate for him to sample the temperature -salinity conditions 

 of the entire Gulf area. Apparently, no analysis was ever attempted 

 hy Blegvad; only a tahle of ohservations is shown in his work (Ref- 

 erence 1, Tahle k) . K. 0. Emery prepared the analysis shown in 

 Figure III-l; it is "based on a composite of Schott's and Blegvad's 

 data. 



The study hy Duhach and Wehe (Reference 2) covers a veiy limited 

 area (Kuwait Harhor) and a short time interval; however, it prohahly 

 supplies a good indication of mid-winter inshore conditions. 



The more recent surveys conducted in the decade 1950-59 

 ohviously were not intended to provide information to improve the 

 past understanding of the temperature- salinity characteristics 

 and their interrelationship with other environmental features for 

 the entire Gulf area. The 1951-52 (WODC Cruises 3ISO5 and 31^96) 

 data provides material for appraising the variation In temperature- 

 salinity features in the northern part of the Gulf along two lines 

 of observations extending from Iran to the Arahlan Peninsula. The 

 arrangement of ohservations for March 1950 (WODC Cruise 31382) 

 leaves something to he desired; the two station lines oriented . 

 SE-NE show the influence of the outflow of Shatt al Arah. It 

 would he interesting, indeed, to examine other environmental data 

 including stream flow rates, rainfall, wind, etc. for the same 

 period and to relate these to the conditions observed in the Gulf. 

 The reason for the arrangement of the remaining stations is not 

 known; it appears most haphazard. 



The design of the Fehruary-March I96O survey (KODC Cruise 

 31658) is systematic and provides a good pattern of data. Both 

 the surface temperature and surface salinity patterns indicate 

 a very weak outflow (almost unnoticeahle effect) of Shatt al 

 Arah; this makes for an interesting comparison with the March 

 observations of a decade earlier. Again, it is highly probable 

 that meteorological conditions for the Gulf and its surrounding 

 area were influential in establishing the recorded temperature- 

 salinity conditions, (in all post 1950 analyses, dashed and dotted 

 lines are used for intermediate intervals and/ or exrtrapolative 

 analysis.) 



In the early analysis by Schott and Emery, the Isollnes for 

 both surface temperature and salinity generally parallel the long 



