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
『東洋文庫所蔵』貴重書デジタルアーカイブ
|
|
カラー画像サムネイル -
目次 -
ページ番号 -
書誌情報（メタデータ） -
キャプション -
カラー画像 -
白黒高解像度画像 -
見開きページ -
グラフィック -
| 0511 |
Southern Tibet : vol.2 |
| 南チベット : vol.2 |
引用情報
OCR読み取り結果
CHAPTER XLIX
THE UPPER TSANGPO TO CHÄROK.
The formation of the bed of the Tsangpo between my Camps 188 and 189
is very curious and irregular. This part of the upper course of the river is very
level, open and broad, and more like a plain; the current is therefore slow. East-
wards from this tract the valley gets narrower, the relative height of the mountains
more considerable, the river more compact and narrow and the current quicker, until
the Tsangpo (and its valley) attains its maxima in all these respects on its way through
the Himalaya.
Between the two above-mentioned camps we have first to consider the river
itself, and then the lake-like expansions formed by one or several of its tributaries
from the north.
The Tsangpo has a breadth of no less than 890m., is very shallow and very
slow. The water is full of mud, while in the northern lake-like branches it is clear.
The river-bed is mud and sand in which one sinks about 1dm. when crossing the
river on foot. Along the banks, specially the northern, the river is so shallow that
my boat could not be kept floating. The depth was measured at every 10th metre,
at 88 places; the greatest depth was 0.74m., the average depth only 0.34m.; the
average velocity 0.26m. a second, and the volume 78.87cub.m. a second.
The measurement was carried out on June 28th. On June 20th the river had
carried 72cub.m. at Liktse-gompa. At this distance the river does not seem to re-
ceive any tributaries worth mentioning.
Just below the measured line several branches enter from the labyrinth of
lakes which still separated us from Camp 189. This is a most extraordinary confu-
sion of water sheets, currents and sand-dunes. To make reliable measurements under
such conditions would have been difficult. All I could do was to make measure-
ments at the narrowest places in the six passages through which a current went
to the Tsangpo. Except these the road crosses whole lakes in which no current
at all could be observed. The dunes separating them from each other are gener-
ally 4m. high, more seldom 8 or 9m. Some of them are partly bound by some
1
.
.
.
.
|
.
.
.
.
18
.
.
.
.
|
.
.
.
.
30
.
.
.
.
|
.
.
.
.
41
.
.
.
.
|
.
.
.
.
51
.
.
.
.
|
.
.
.
.
62
.
.
.
.
|
.
.
.
.
73
.
.
.
.
|
.
.
.
.
83
.
.
.
.
|
.
.
.
.
95
.
.
.
.
|
.
.
.
.
109
.
.
.
.
|
.
.
.
.
121
.
.
.
.
|
.
.
.
.
132
.
.
.
.
|
.
.
.
.
144
.
.
.
.
|
.
.
.
.
155
.
.
.
.
|
.
.
.
.
167
.
.
.
.
|
.
.
.
.
177
.
.
.
.
|
.
.
.
.
187
.
.
.
.
|
.
.
.
.
198
.
.
.
.
|
.
.
.
.
209
.
.
.
.
|
.
.
.
.
223
.
.
.
.
|
.
.
.
.
237
.
.
.
.
|
.
.
.
.
249
.
.
.
.
|
.
.
.
.
259
.
.
.
.
|
.
.
.
.
269
.
.
.
.
|
.
.
.
.
279
.
.
.
.
|
.
.
.
.
289
.
.
.
.
|
.
.
.
.
305
.
.
.
.
|
.
.
.
.
323
.
.
.
.
|
.
.
.
.
334
.
.
.
.
|
.
.
.
.
345
.
.
.
.
|
.
.
.
.
356
.
.
.
.
|
.
.
.
.
367
.
.
.
.
|
.
.
.
.
381
.
.
.
.
|
.
.
.
.
393
.
.
.
.
|
.
.
.
.
403
.
.
.
.
|
.
.
.
.
415
.
.
.
.
|
.
.
.
.
428
.
.
.
.
|
.
.
.
.
445
.
.
.
.
|
.
.
.
.
461
.
.
.
.
|
.
.
.
.
473
.
.
.
.
|
.
.
.
.
487
.
.
.
.
|
.
.
.
.
503
.
.
507
509
511
512
513
.
.
517
.
.
.
.
|
.
532
Copyright (C) 2003-2026
National Institute of Informatics（国立情報学研究所）
and
The Toyo Bunko（東洋文庫）. All Rights Reserved.
本ウェブサイトに掲載するデジタル文化資源の無断転載は固くお断りいたします。
