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
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| 0276 |
Southern Tibet : vol.2 |
| 南チベット : vol.2 |
引用情報
OCR読み取り結果
1533 . . . . . . closed
1812 . . . . . . open
1821 . . . . . . open
1824}
1828} . . . . . open
1818}
1840} . . . . . closed
1836}
1838} . . . . . nearly closed
1840}
1850} . . . . . open
1842 . . . . . . open
1847 . . . . . . open
1848 . . . . . . closed
1854}
1858} . . . . . closed
1862 . . . . . . closed
1863 . . . . . . closed
1865 . . . . . . open
1869 . . . . . . closed
1873 . . . . . . open
1889}
1890} . . . . . open
1892 . . . . . . open
1894 . . . . . . open
1898 . . . . . . open
1902 . . . . . . beginning to get closed
1903 . . . . . . closed
1904}
1911} . . . . . closed
1780 . . . . . . . . . . closed
Before 1800 . . . . . . open
1812—1824 . . . . . . open
Sometime after 1824 . . closed
1833—1842 . . . . . . closed
1825}
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. . . . . . . . . closed
1860}
1865}
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. . . . . . . . . open
1902}
Comparing the two columns we find that the 35 year cycles nearly disappear — in my list, which gives instead a more irregular periodicity. As a rule the two columns run fairly parallel with each other, although I have exceptions from Longstaff's closed period of 1825—1860. From his open period 1865—1902 there is only one exceptional year.
The list has the same fault as the above list on the effluence from the lakes: it is incomplete. Therefore a comparison between both leaves much room open for uncertainty. Theoretically it is very easy to say that there must be a certain parallelism between both classes of phenomena. For as Longstaff says: "It is probable that the explanation of such periodic glacier variations as I have described must be sought in the periodic variations of rainfall", therefore nobody can doubt that the oscillations in the lakes and the fluctuations in their effluence exclusively depend upon variations of rainfall. The same original cause influences both the lakes and the glaciers. During a period of abundant rain much water will flow to the Manasarovar and out of it, and perhaps out of the Rakas-tal as well; in the same period more snow than usual will accumulate in the mountains and feed the glaciers which consequently
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30
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41
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51
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62
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73
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83
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95
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109
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121
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132
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144
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155
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167
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177
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187
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198
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209
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223
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237
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249
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259
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269
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274
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279
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289
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305
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323
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334
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345
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356
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367
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381
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393
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403
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415
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428
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445
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461
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473
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487
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503
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517
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532
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