TEMPERATURE 



B 



b 



/ b 



a = TOP OF THERMOCLINE 



b = BOTTOM OF THERMOCLINE 



C = WEAK THERMOCLINE 



LEGEND 



h =MIXED-LAYER THICKNESS 



h b = DEPTH OF THERMOCLINE BOTTOM 



At=TEMPERATURE DIFFERENCE BETWEEN 

 a AND b 



FIGURE I TYPICAL BT TRACES 



