国立情報学研究所 - ディジタル・シルクロード・プロジェクト
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Southern Tibet : vol.7 | |
南チベット : vol.7 |
WATER-PARTING PASSES OF THE TRANSHIMALAYA.
537
Saggo-la — m.
Dicha-la — »
Samye-la (Hedin, 1908) 5527
Dsalung-la — »
Lungmar-la »
Pechen-la — »
Lungnak-la — »
Yor-la — »
Ganglung-la — »
Men-la — »
Pedang-la
Gäbbyi-la »
Yülung-la
Tarkyang-la »
Surnge-la (Pundit ?, Hedin, 1 908) 5276
Tseti-lachen-la (Hedin, 1907) 5466 »
Jukti-la (Nain-Sing, 1867, Calvert, 1906, Hedin, 1907) 5814 »
The mean altitude of the I I determined passes on the great water-parting is therefore 5 545 m., or 853 m. above the mean altitude of the lake depression to the north of it. Comparing these figures with those we have already got regarding the Panggong—Selling-tso depression, we obtain an excellent idea of the general hypsometric relations :
The mean altitude of the mountain system north of the
Selling-tso—Panggong-tso depression 5275 m.
The mean alt. of the Selling-tso—Panggong-tso depression 4464 » The mean altitude of the mountain system south of the
Selling-tso—Panggong-tso depression 5174 »
The mean altitude of the Nganglaring-tso —Tengri-nor
depression 4692 »
The mean altitude of the passes on the great water-
parting of the Transhimalaya
5545 »
This means a general rise of the ground towards the south. The Transhimalayan passes are higher than those of the two other ranges, and the southern lake depression is no less than 23o m. higher than the next depression to the north. There is also a great morphological difference in the orographical features between the two northern mountain systems and Transhimalaya. On a journey across the Tibetan plateau-land the two first-mentioned systems are easily crossed each in one pass, , whereas the Transhimalaya is usually crossed in two or more passes of which, of course,
68. VII.
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