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ID 13943
Eprint ID
13943
FullText URL
Title Alternative
Water-soluble materials on volcanic ash from the 1990-94 eruption of the Unzenn volcano
Author
Akagi, Seishi
Yamamoto, Masahiro
Abstract
Water-soluble materials on volcanic ash from the Unzen volcano collected from February, 1991 to July, 1994 were chemically analyzed. They were similar in chemical characteristics to those obtained from other volcanoes. Chemical compositions varied even for materials from the same pyroclastic flow. C1 contens increased with increasing residence time of volcanic ash in air, but SO4 contents were almost fixed. It therefore seems that the reaction of volcanic ash with HC1 proceeds even at low temperatures, whereas the reaction with SO2 takes place only at high temperatutes.
Keywords
volcanic ash
volcanic gas
Unzen volcano
C1/SO4 ratio
water-soluble
material
Published Date
1995-09-20
Publication Title
Okayama University Earth Science Report
Publication Title Alternative
岡山大学地球科学研究報告
Volume
volume2
Issue
issue1
Publisher
岡山大学理学部地球科学教室
Publisher Alternative
Department of Earth Sciences Faculty of Science, Okayama University
Start Page
55
End Page
62
ISSN
1340-7414
NCID
AN10506284
Content Type
Departmental Bulletin Paper
language
日本語
Copyright Holders
岡山大学地球科学研究報告編集委員会
File Version
publisher
Refereed
False
Eprints Journal Name
esr