Merapi volcano (Java, Indonesia) and Merapi-type Nuée ardente
Merapi volcano (Java, Indonesia) and Merapi-type Nuée ardente
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默拉皮火山（印度尼西亚爪哇）和默拉皮型 Nuée ardente
DOI：
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发表时间：
1984
期刊：
影响因子：
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通讯作者：
J. Bardintzeff
中科院分区：
文献类型：
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作者：
J. Bardintzeff
在默拉皮火山，由于其在火山最近的活动中所起的突出作用，确定了一种特殊的nusame ardente类型（Merapi型雪崩nusame）：重力在火山喷发过程中起了重要作用。然而，也有一些其他的喷发方式会产生涌浪和火山灰。在很短的时间跨度（15年）内沉积的三种类型的麻黄进行了比较：化学和矿物学相似，但粒度分析不同。没有囊状玻璃，因此可以断定没有新的岩浆。这个例子清楚地显示了火山风格的多样性，在很短的时间内具有相似的化学成分。从坍塌的圆顶或流动中产生的雪崩分为两种类型：(1)严格意义上的merapi类型，没有任何新鲜的玻璃，来自完全凝固的圆顶。(2)芳烃型，含浮石玻璃，由圆顶形成，其内部仍为液体。
A particular nuée ardente type (Merapi-type avalanche nuée) has been defined at the Merapi volcano because of its prominent role in the recent activity of the volcano: gravity plays a significant role during the eruption.However, some other eruption styles occur too producing surges and ashfalls. Three types of tephra, deposited in a very short time-span (15 years) are compared: chemistry and mineralogy are similar, but grain-size analyses are different. There is no vesicular glass, and it is concluded that there is an absence of new magma. This example shows clearly the variety of volcanic styles, with similar chemistry in a very short period.Avalanche nuées from collapsed domes or flows are separated into two types:(1)Merapi-typesensu stricto, without any fresh glass, derived from a wholly solidified dome.(2)Arenal-type, containing pumiceous glass, derived from a dome, the interior of which is still liquid.