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 |
| Overland to India : vol.2 | |
| インドへの陸路 : vol.2 |
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引用情報
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POST-GLACIAL CLIMATIC CHANGES IN PERSIA
BEFORE we can arrive at a satisfactory conclusion with ! regard to climatic variations within historic times we must try to gain an insight into the probable changes that affected Iran during the long interval which has passed since the glacial period.
An invaluable guide or key to the solution of the 1
problem is afforded us by the fluctuating level of the a
Caspian Sea, and I take the liberty of citing some of the
results which Professor Eduard Bruckner has set forth in 3i
his remarkable work, Klimaschwankungen seit 1700 nebst Bemerkungen über die Klimaschwankungen der Diluvialzeit.
In this work Bruckner has collected all the available notices 1
and observations of the water-level of the Caspian Sea. I
Of course the data are more numerous and reliable the i nearer they are to our own times. Monteith remarks that
during the period 181I-28 the Caspian Sea sank and all i
the lakes of Persia also became shallower. Sokoloff places the beginning of the period of fall in the years 1809-14, and Lenz says that the sea fell io feet from 1816 to 1830. Bruckner estimates the sinking of the surface from the beginning of the century to 1830 at 62 feet. A minimum
occurred, according to Khanikoff, in the years 1844-45, and ,
then followed a rise, which from the middle of the sixties showed itself distinctly on all the shores of the Caspian Sea.
By the aid of ancient buildings still existing and by historical notices we obtain some reliable data from a past which extends back for woo years. A measurement on the walls of Derbend enabled Khanikoff to prove that
CHAPTER L
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