Imperial Valley

Japanese: インペリアル・バレー(英語表記)Imperial Valley
Imperial Valley
A dry basin that stretches from southeastern California in the United States to parts of Baja California in Mexico. Part of the Colorado Desert, most of it is below sea level. It once formed a valley that continued into the Gulf of California, but was separated into a basin by the formation of the Colorado River delta. The first irrigation works were completed in 1902, but three years later the Colorado River flooded and the Salton Sea was formed to the north. Irrigation progressed rapidly with the completion of Imperial Dam (1938) and the All-American Waterway (1940), and the area became a fertile agricultural region producing a variety of agricultural products on 2,000 km2 of cultivated land.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
アメリカ合衆国,カリフォルニア州南東部からメキシコのバハ・カリフォルニアの一部に広がる乾燥した盆地。コロラド砂漠の一部で,大部分が海面以下。かつてはカリフォルニア湾に続く谷を形成したが,コロラド川デルタの形成により区切られ盆地化した。1902年に最初の灌漑事業が完成したが,3年後にコロラド川が氾濫して北側にソールトン海が形成された。インペリアル・ダム(1938)とオール・アメリカン水路(1940)の完成によって急速に灌漑化が進み,2000km2の耕作地に多様な農産物を産する肥沃な農業地帯となった。

出典 株式会社平凡社世界大百科事典 第2版について 情報

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