LIST OF ILLUSTRATIONS AND TABLES DATA DESCRIPTION Data location : Fig. 1 Data gridding : Table 1 Data distribution in time : Fig. 2 DESCRIPTION OF THERMAL STRUCTURE MEAN AND VARIANCE Mean temperature section : Fig. 3 Bimonthly mean temperature sections : Fig. 4.1 - 4.12 Total Standard Deviation (STD) : Fig. 5 Seasonal Standard Deviation (STD) : Fig. 6 Interannual Standard Deviation (STD) : Fig. 7 Seasonal STD / Interannual STD : Fig. 8 Noise Standard Deviation (STD) : Fig . 9 Noise STD / Signal STD : Fig. 10 Mean salinity section : Fig. 11 Bimonthly mean salinity sections : Fig. 12.1 - 12.12 CLIMATOLOGY - MEAN SEASONAL CYCLE SST : Table 2 & Fig. 13 D20 : Table 3 & Fig. 14 Dynamic Height( 0/400 ): Table 4a & Fig. 15a Dynamic Height( 0/700 ): Table 4b & Fig. 15b Transport Function( 0/400 ): Table 5a & Fig. 16a Transport Function( 0/700 ): Table 5b & Fig. 16b Total Transport( 0/400 ): Table 6a $ Fig. 17a Total Transport( 0/700 ): Table 6b & Fig. 17b INTERANNUAL VARIATION Examples of Optimally Averaged temperatures : IX-1 : Fig. 18 IX-12 : Fig. 19 IX-22/PX-11 : Fig. 20 PX-2 : Fig. 21 Time Series of : SST : Fig. 22.1 - 22.6 D20 : Fig. 23.1 - 23.6 Dynamic Height( 0/400 ) Fig. 24.1 - 24.6 Hovmoller Diagrams of : SST anomaly : Fig. 25 D20 anomaly Fig. 26 Dynamic Height( 0/400 ) anomaly Fig. 27 EOF ANALYSIS OF ANOMALIES SST spatial eigenvectors : Fig. 28.1 - 28.3 SST temporal coefficients : Fig. 29.2 - 29.3 D20 spatial eigenvectors : Fig. 30.1 - 30.3 D20 temporal coefficients : Fig. 31.2 - 31.3 Dynamic Height ( 0/400 ) spatial eigenvectors : Fig. 32.1 - 32.3 Dynamic Height ( 0/400 ) temporal coefficients : Fig. 33.1 - 33.3