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ID 48219
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Title Alternative
Areal distribution of water-insoluble particles in snow covers of the central mountainous area, Japan
Author
Toyama, Kazuhiro
Matsumoto, Ena
Kawada, Kunio
Satake, Hiroshi
Abstract
The vertical snow samples collected from 6 locations (Iou-zen: 800m A.M.S.L; the nearest site from the Sea of Japan, Kongoudou-zan: 1300m, Nishi-Hodaka-Dake: 2200m; the Northern Japan Alps, Hachimori-yama: 2100m, Kiriga-mine: 2000m, Yatsuga-take: 2200m; the most inlying site) in the central mountainous area, Japan, during early spring season 2004, were analyzed for size-separated concentrations of water-insoluble particles in snow layers to investigation of long-range transportation of chemical substances from the Asian continent to high mountainous areas in Japan. Most of particles are less than 30 μm in diameter, the greater part of particles observed at the 6 locations were considered to be transported from the Asian continent sources as Asian dust (KOSA). The variation patterns of the vertical profiles of particle concentrations in snow layers were corresponding among each location. The concentrations of particles with less than 30 μm was gradually increased with increasing distance from the Sea of Japan to the Japan Alps, although, sharply-decreased at 3 sites located the monsoon-leeward of the Japan Alps, suggesting that the particles transported with monsoon were gradually removed from air and deposited in snow cover when the air parcel pass through the Japan Alps.
Keywords
snow
mountainous area
particle
KOSA
long-range transportation
Published Date
2012-02
Publication Title
環境制御
Publication Title Alternative
Environmental Research & Control
Volume
volume33
Publisher
岡山大学環境管理センター
Publisher Alternative
Environmental Management Center, Okayama University
Start Page
13
End Page
19
ISSN
0917-1533
NCID
AN1024789X
Content Type
Departmental Bulletin Paper
language
日本語
File Version
publisher
Refereed
True
Eprints Journal Name
erc