Nuées Ardentes of the 1968 Eruption of Mayon Volcano, Philippines
Links
- More information: Publisher Index Page (via DOI)
- Download citation as: RIS | Dublin Core
Abstract
Mayon Volcano, southeastern Luzon, began a series of explosive eruptions at 0900 April 21, 1968, and by May 15 more than 100 explosions had occurred, at least 6 people had been killed, and roughly 100 square km had been covered by more than 5 cm of airfall ash, blocky ash flows, and a lava flow. All material crupted was porphyritic augite-hypersthene andesite.
Explosions from the summit crater (elevation 2460 m) ejected large quantities of ash and incandescent blocks to a height exceeding 600 m and produced ash-laden clouds which rose to heights of 3 to 10 km. Backfall of the coarser material fed nuées ardentes which repeatedly swept down ravines on all sides of the volcanic cone. The velocity of one nuée ardente ranged from 9 to 63 m per sec. The largest nuées descended to the southwest and reached as far as 7 km from the summit. An aa lava flow also descended 3 1/2 km down this flank.
The nuées ardentes deposited pyroclastic flows that contained large breadcrust-surfaced blocks averaging about 30 cm across, but occasionally reaching 25 m in greatest dimension. These blocks were still very hot in their interiors several days later. Surrounding the pyroclastic flows is a seared zone as much as 2 km wide, but averaging a few hundred meters, in which vegetation is charred and splintered, but over which only a thin layer of airfall ash was deposited.
Study Area
Publication type | Article |
---|---|
Publication Subtype | Journal Article |
Title | Nuées Ardentes of the 1968 Eruption of Mayon Volcano, Philippines |
Series title | Bulletin Volcanologique |
DOI | 10.1007/BF02596528 |
Volume | 33 |
Year Published | 1969 |
Language | English |
Publisher | Springer Nature |
Contributing office(s) | Volcano Science Center |
Description | 21 p. |
First page | 600 |
Last page | 620 |
Country | Philippines |
Other Geospatial | Mayon Volcano |
Google Analytic Metrics | Metrics page |