A NUMERICAL SIMULATION OF THE 1983 LAVA FLOWS AT MIYAKEJIMA

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  • 数値計算による1983年三宅島溶岩流の再現
  • スウチ ケイサン ニ ヨル 1983ネン ミヤケジマ ヨウガンリュウ ノ サイ

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Abstract

A method of numerical simulation for basaltic (low-viscous) lava flow was proposed. The1983 lava flows at Miyakejima was reproduced by the numerical calculation on the digital map ofthe volcano, assuming the condition of lava extrusion and the physical property of the lava. Theobtained lava flows fairly coincide with the actual lava flows in their path and extent including thethickness of lava. Using the digital map of Miyakejima, a risk map for lava flows is made.

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