CHARACTERIZATION OF ULTRAFINE AEROSOL-PARTICLES IN MT-ETNA EMISSIONS

被引：14

作者：

AMMANN, M

BURTSCHER, H

机构：

[1] Laboratory for Solid State Physics, ETH Zürich, Zürich

来源：

BULLETIN OF VOLCANOLOGY | 1990年 / 52卷 / 08期

关键词：

D O I：

10.1007/BF00301209

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Particulate emissions from Mt. Etna in the fine-size range below 100 nm were studied in June and September 1989. The aerosol particles were characterized by size, concentration and photoelectric activity. These quantities are sensitive to the physical and chemical properties of the magma. Concentrations varied from 104 to 107 cm-3. The size distributions peak below 20 nm (radius) and are very narrow. The particles are generated mainly by nucleation and condensation of magmatic volatiles in a strong temperature gradient. The photoelectric activity of these particles can indicate high magma levels and increased exsolution of volatiles. It is therefore related to the observed activity of the respective crater and may be helpful as a prediction tool when used in conjunction with other volcano-monitoring techniques. © 1990 Springer-Verlag.

引用

页码：577 / 583

页数：7

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