このエントリーをはてなブックマークに追加
ID 190
file
title alternative
Spatial distribution of SiO2 flux in Ikuchijima Island, Hiroshima Prefecture.
creator
重枝 豊実
齋藤 光代
吉田 浩二
竹井 務
峯 孝樹
subject
Spatial distribution
SiO2flux
Chemical weathering
Ikuchijima Island
NDC
Pollution. Environmental engineering
abstract
To clarify topographic effects on dissolved SiO2 flux produced by chemical weathering in a graniticmountainous catchment, stream discharge were measured and water samples were collected from fifteen streamsin Ikuchijima Island, Seto Inland Sea. The results show that the dissolved SiO2 flux is controlled by streamdischarge, due to high amount of runoff compare to dissolved SiO2 concentration. However dissolved SiO2 fluxof catchment was not affected by horizontal two - dimensional features, such as catchment area, alluvial fanarea, and the catchment shape. On the other hand, streambed gradient of the catchment affects runoff and dissolvedSiO2 flux, but have no influence on dissolved SiO2 concentration. Useful water convergence degree ofthe catchment was calculated by multiplication of the inversion of streambed gradient by prolate degree ofcatchment. The estimated water convergence degree shows good correlation with dissolved SiO2 flux and runoff.
journal title
Memoirs of the Faculty of Integrated Arts and Sciences, Hiroshima University. IV, Science reports
volume
Volume 29
start page
95
end page
103
date of issued
2003-12
publisher
広島大学総合科学部
contributor
国立情報学研究所
issn
1340-8364
ncid
SelfDOI
language
jpn
nii type
Departmental Bulletin Paper
HU type
Departmental Bulletin Papers
DCMI type
text
format
application/pdf
text version
publisher
department
Graduate School of Integrated Arts and Sciences
他の一覧