IIIFカラー高解像度
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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| IIIFカラー高解像度 |
| Southern Tibet : vol.4 | |
| 南チベット : vol.4 |
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引用情報
TRIBUTARIES OF' THE SATLI?J. 30i
south, some of them containing stagnant rain-water in small pools. To the south is the region, Horgyava, with a place called Ng-angtsang; west of it, we have
J un a-taktsa with a place, Gya-slzaotse. The ground consists of fine gravel with
some grass. About halfway, the living rock was yellow, fine, crystalline limestone. The little monastery, Dölchu goinja, is situated on the flat slope of a low hill on
the right side of the Salle/. Here we were 72 m. below the surface of Raka s-tcrl. On the left bank of the Sallej, 14 tents belonging to Ladaki and Gurkha merchants, were pitched.
"hhe next march, 7uly 3 ist, goes 15.5 km. N. W. along the Sallej, the river falling 85 m. or to 4,432 ni. at Cam, CCCCLIX, the rate being as 1 :176. "hhe fall of the river is, therefore, still very gradual. The road follows the southern base of the hill, down to the bed of the Sallej which now, after the rain of the previous day, had a good deal of brownish grey water. From the left, the river receives the two tributaries, Sheri-namking and Charike-tangma. The road crosses the Satlej. In a widening of the valley, there was at the left side of the river, a pool of rain - water.
After crossing the Sallej once more, we reach the point where the right terrace is broken through by a considerable tributary, obviously coming from the Transhimalaya and crossing the lasam or highroad to Gartok. The gravelly floor of the valley is first traversed by 3 or 4 smaller branches after which follows the main branch, being 53 m. broad, o.3 m. deep as an average and with an average velocity of 1 m. the volume thus being approximately 16 cub. m. per second. The water was thick with solid material and streamed with great force and noise. It had rained the whole day before, and the drainage area of this tributary had obviously been specially exposed. The rest of the day, we follow the right side of the joint river, which from here gradually increases and grows to the mighty Sallej. We stick to the floor of the valley, riding amongst gravel and with an erosion terrace 8 or 1 o m. high immediately to our right. Above this terrace there is another about 3o m. above the river. The left terrace is well marked the whole way though, lower down, one sees three terraces, the highest some 4o m. above the river. They prove that at an earlier period, large quantities of water have flowed down through the bed, at a time when the Manasarovar and the Rakas-lal were in uninterrupted communication with the river.
After a while we cross another tributary from the right piercing the terraces in the same way as the first, and carrying 3 cub. m. per second of yellowish brown water. At several places in the valley, springs come up and every one of them delivers its tribute to the Sallej. Very often the river is divided into two or more branches, where the valley is broader. Sometimes the ground is swampy from spring-water. For a few km. the river flows to the W. N. W. As a rule the bed is 1 oo or 200 m. broad between the terraces, and 2 or 3 km. between the bases of the mountains. In
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