. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 2o8 DISCOVERY REPORTS zone. The southerly component has been found in the east of the South Atlantic Ocean, but in the east of the Pacific Ocean it is only found near the sub-tropical convergence. It is not confined to sub-Antarctic water, but also appears in sub-tropical water when there is a prevailing westerly wind. Below 200 m. the water in the sub-Antarctic layer has a component of movement towards the north, except perhaps in the eastern corner of the Pacific Ocean. Near Cape Horn, there i
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 2o8 DISCOVERY REPORTS zone. The southerly component has been found in the east of the South Atlantic Ocean, but in the east of the Pacific Ocean it is only found near the sub-tropical convergence. It is not confined to sub-Antarctic water, but also appears in sub-tropical water when there is a prevailing westerly wind. Below 200 m. the water in the sub-Antarctic layer has a component of movement towards the north, except perhaps in the eastern corner of the Pacific Ocean. Near Cape Horn, there is a general component in the layer towards the south, for in this region part of the easterly current across the Pacific is deflected southwards to flow through the Drake Passage. Conditions in the southern and northern parts of the sub-Antarctic Zone differ rather widely, and the two areas must be considered separately. STATION 1021 200 W53I8 1026 1022 I 1023 1024 |ipg5 1027 1028 400m 600m 800m. 200 M1LE5 NORTH OF THE CONVERGENCE MILES SOUTH OF THE CONVERGENCE Fig. 20. The depth of the minimum temperature in Antarctic surface water and sub-Antarctic water, the depth of the minimum salinity of sub-Antarctic water. In the Southern Half of the Zone in the region of intense vertical mixing extend- ing about 100-150 miles north of the Antarctic convergence there are only small changes from west to east. In the Pacific Ocean in 80° W the salinity of the layer is almost uniform with depth down to about 300 or 400 m., or it decreases to a weak minimum at that depth. The temperature is usually uniform down to 150 m. and then decreases gradually. There is sometimes a minimum temperature at the same depth as the minimum salinity, and both are caused by the greater percentage of Antarctic surface water in the mixture of the two waters at that depth. Below the level of minimum salinity the salinity increases, and there are only small temperature changes. At a depth of 600-800 m. the tempe
Size: 2346px × 1065px
Photo credit: © Paul Fearn / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti
