Thalassa; an essay on the depth, temperature, and currents of the ocean . z lU rj 3 — CD O rr: 3 CO m < LU 3 X ^ 5 QC UJ UJ z. From Tonga Tabu to Torres Strait. 103 officers on board Challenger were surprised tofind that, beyond a depth varying between 1200 and 1400fathoms, the thermometers ceased to register any furtherdecrease of temperature. The latter was observed to fallfrom 25° C. at the surface to i°.8 C. between 1200 and. 1400fathoms, and to remain stationary or nearly stationary from thatlevel down to the bottom. At Station 184, the bottom-tem-perature in 1400 fathoms was i°
Thalassa; an essay on the depth, temperature, and currents of the ocean . z lU rj 3 — CD O rr: 3 CO m < LU 3 X ^ 5 QC UJ UJ z. From Tonga Tabu to Torres Strait. 103 officers on board Challenger were surprised tofind that, beyond a depth varying between 1200 and 1400fathoms, the thermometers ceased to register any furtherdecrease of temperature. The latter was observed to fallfrom 25° C. at the surface to i°.8 C. between 1200 and. 1400fathoms, and to remain stationary or nearly stationary from thatlevel down to the bottom. At Station 184, the bottom-tem-perature in 1400 fathoms was i°.8 C. ; at Station 183, in 1700fathoms, i°.7 C. ; at Station 182, in 2275 fathoms, i°.4 C. ; atStation 176, between the Hebrides and Fiji, in 1450 fathoms,2° C. ; and at Station 175, in 1350 fathoms, i°.8 C. The samephenomenon was found to occur under similar conditions in theseas of the Indian Archipelago, and tended to confirm theopinion formed at the time—that its cause must be sought inthe partial or complete suspension of all deep-sea communica-tion by intervening submarine ridges or submerged areas ofelevatio
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Keywords: ., bookcentury1800, bookdecade1870, bookidthalassa, booksubjectocean
