1950年の噴火停止以後の内輪山内部の地形變化
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概要
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The writer made frequently topographical surveys of inside of the inner somma especially level changes of the surface of fresh lava, which was spouted by the present eruption and accumulated there in a form of lava-pool. On the other hand, the eruptions occurred several times up to June, 1951, each of which lasted for several weeks or several days. As the result of the present surveys, it was found that raising and lowering of the lava surface rookplace repeatedly in the close relation with severe eruptions, especially, rapid and marked subsidence of the lava preceded by severe eruptions. In addition, the writer estimated the total volume of lava, overflew the inner somma and flow down over its flank this year, about 10<SUP>7</SUP>m<SUP>3</SUP>. that is 2 ×10<SUP>7</SUP> tons. (Aug. 20, 1951)
- 社団法人 東京地学協会の論文