. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. f p MILtS ^ . 60 R .1111 75 .1000 METRES / looa .2000 ~v z o \- < JOOO y / zooa .4000 ,/' b. Fig. 17. Approaches to Antarctica. Vertical scale, x 25. Positions of soundings are marked on the horizontal scales. {a) Towards Adelie Land, on a south-easterly course. Continuous record from point marked R. Note wide continental shelf in this area. (6) In the meridian of Greenwich. Continuous record for 35 miles. Very narrow continental shelf, (f) In the longitude of 3° E. Bottom rises abruptly to t
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. f p MILtS ^ . 60 R .1111 75 .1000 METRES / looa .2000 ~v z o \- < JOOO y / zooa .4000 ,/' b. Fig. 17. Approaches to Antarctica. Vertical scale, x 25. Positions of soundings are marked on the horizontal scales. {a) Towards Adelie Land, on a south-easterly course. Continuous record from point marked R. Note wide continental shelf in this area. (6) In the meridian of Greenwich. Continuous record for 35 miles. Very narrow continental shelf, (f) In the longitude of 3° E. Bottom rises abruptly to the land from a depth of 1000 m. (547 fm.). and the Scotia Arc. On the other hand, the width of the shelf may depend on the geological structure of the continent and the incidence of large glaciers. In order to arrive at any conclusion, however, about the relationship of the shelf with the various ridges which approach Antarctica from seaward, it will be necessary to examine the many thousands of oceanic soundings taken by the Discovery Investi- gations around the continent; it will, perhaps, be more suitable to revert to the continental shelf of Antarctica when we consider these soundings. It is hoped to begin this work in the near future. SOUNDINGS IN OTHER LOCALITIES The majority of soundings taken during the work of the Discovery Committee (and all of these outside the Atlantic sector) are from the 'Discovery II'. The principal tracks of this ship between 1932 and 1939 are shown in Text-fig. 18 (p. 89), and since soundings were taken at intervals of 8 or 9 miles throughout nearly all of these routes, it will easily be understood that they provide a very large number of new oceanic soundings south of 40° S. These soundings, added to the existing data, might justify the construction of a new bathymetric chart of the Southern Ocean. It is hoped to prepare such a chart later on, but in view of recently published charts and the prospects of additional data, it is thought better
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