. The Bell System technical journal . Fig. 15 — Seamount photographs taken near summit of seamount on BermudaRise at 34°38N, 56°53W at depth of 1,370 fathoms. The two photos were takenabout 100 feet apart, indicating the rapid alternation of ooze and rock bottom overshort distances. The crest of the Mid-Atlantic Ridge is similar, as a bottom type, to jthe seamounts previously described. Dredge hauls have brought up |mostly basalt, although a few fragments of limestone have also been |retrieved. The photographs shown in Fig. 16 were taken about 60 feet apart on the Mid-Atlantic Ridge. They illu
. The Bell System technical journal . Fig. 15 — Seamount photographs taken near summit of seamount on BermudaRise at 34°38N, 56°53W at depth of 1,370 fathoms. The two photos were takenabout 100 feet apart, indicating the rapid alternation of ooze and rock bottom overshort distances. The crest of the Mid-Atlantic Ridge is similar, as a bottom type, to jthe seamounts previously described. Dredge hauls have brought up |mostly basalt, although a few fragments of limestone have also been |retrieved. The photographs shown in Fig. 16 were taken about 60 feet apart on the Mid-Atlantic Ridge. They illustrate a change from smoothto rocky conditions in this short Fig. 16 — Mid-AtLantic Ridge photographs (1,500-fathom depth at 48°30N,28°48W). The two pictures were taken about 60 feet apart. Out of 60 photographstaken at simihir intervals in this location three were similar to that on the left andthe remainder resembled that on the right. The dark l)and in the right-hand pic-ture is probably composed of gravel and sand of the dark-colored rock of the peaks,while the white underlying layer is clay or ooze. The dark bantl was produced bya current which swept the dark material over the light-colored material. OCEANOGRAPHIC INFORMATION FOR SUBMARINE CABLES 1075 IV. TEMPERATURES* General The temperature of a given point on the deep sea floor is determinedby the system of ocean circulation. Study of deep sea circulation is stillin an early stage and theories which would permit prediction of changesare still in a rudimentary form. In addition, observations of actual bot-tom temperature are few. Thus, a study of the temperature environmentof sub
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
