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Kaʻū Desert
The Kaū Desert is a leeward desert in the district of Kaū, the southernmost district on the Big Island of Hawaii, and is made up mostly of dried lava remnants, volcanic ash, sand and gravel. The desert covers an area of the Kīlauea Volcano along the Southwest rift zone. The area lacks any vegetation, mainly due to acid rainfall.
==Climate==
Kaū desert is not a true desert in that rainfall exceeds per year. However, rain combines with sulfur dioxide, released by volcanic vents, and forms acid rain. The pH of the rain, as low as 3.4 during an eruption, inhibits plant growth. Furthermore, water evaporates quickly on the ground and the tephra soil is extremely permeable.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「Kaʻū Desert」の詳細全文を読む
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