Debris Avalanche and Blast Eruption, Raung Volcano, Indonesia

拟议研究的主要目标是确定爪哇朗火山的碎片雪崩与爆发性火山活动之间的关系。这场长达60公里的碎片雪崩是印度尼西亚乃至世界上最大的雪崩之一。它暴露在外，容易接近。该存款与岩浆喷发的存款层间，其中一些可能是类似于1980年5月18日圣海伦火山爆炸的侧向爆炸存款。要追求的中心问题是，是否碎片雪崩引起了相关的岩浆喷发，或岩浆喷发引起了碎片雪崩。这一问题在科学上知之甚少，但对于解决火山碎屑涌和流发展的更一般性问题很重要。在具有陡峭斜坡的大型成层火山地区，这对评估喷发危险和制定疏散和应急计划也至关重要。

The primary goal of the proposed research is to determine the relationship between the debris avalanche of Raung Volcano, Java, to explosive volcanism. The debris avalanche, with its run out length of 60 kilometers is one of the largest in Indonesia and perhaps in the world. It is well exposed and readily accessible. The deposit is interstratified with deposits of magmatic eruptions, some of which are probably deposits of lateral blasts similar to Mount St. Helens blast of May 18, 1980. The central question to be pursued is whether or not the debris avalanche caused an associated magmatic eruption, or a magmatic eruption caused the debris avalanche. This issue is poorly known scientifically and is important for solving more general problems about the development of pyroclastic surges and flows. It is also critical in assessing eruption hazards and development of evacuation and contingency plans in areas of large stratovolcanoes with steeply sloping sides.