英和和英

出典:『Wikipedia』 (2011/04/19 14:42 UTC 版)

英語による解説

引用

A rift zone is a feature of some volcanoes, especially the shield volcanoes of Hawaii, in which a linear series of fissures in the volcanic edifice allows lava to be erupted from the volcano's flank instead of from its summit. For example, in the currently ongoing eruption of Kilauea lava is emitted continuously from the Puʻu ʻŌʻō vent located in Kilauea's East Rift Zone roughly 15 km east of Kilauea Crater. Rift zones tend to extend for tens of kilometers radially outward from the volcanic summit; most Hawaiian volcanoes have two or sometimes three of them. The accumulated lava of repeated eruptions from rift zones causes many Hawaiian volcanoes to have an elongated shape. Perhaps the best example of this is Mauna Loa, which in Hawaiian means "long mountain".