米地質調査所、大災害リスクの火山１８を報告　イエローストーンは落選

This Friday, May 4, 2018, aerial image released by the U.S. Geological Survey, at 12:46 p.m. HST, a column of robust, reddish-brown ash plume occurred after a magnitude 6.9 South Flank of Kīlauea earthquake shook the Big Island of Hawaii, Hawaii. The Kilauea volcano sent more lava into Hawaii communities Friday, a day after forcing more than 1,500 people to flee from their mountainside homes, and authorities detected high levels of sulfur gas that could threaten the elderly and people with breathing problems.

FILE - In this March 25, 1984, file photo, lava erupts along Mauna Loa volcano in Hawaii. Hawaii's Kilauea volcano has captivated people around the world by shooting lava high into the sky and sending rivers of molten rock pouring down hillsides into the ocean over the past month, but it's only one of many volcanoes in the islands.