(Article of periodic en Anglais - 2011)

Document title

Channel initiation in a mountain basin underlain by granodiorite : a case study in the Abukama Mountains, Japan

Authors(s) and Affiliation(s)

(1) Graduate School of Life and Environmental Sciences, Univ., Tsukuba, JAPON
(2) Disaster Prevention Research Inst., Univ., Kyoto, JAPON


This paper summarizes preliminary results of hydrological and geomorphic investigations on channel heads in the western part of Mt. Hayama, southern Tohoku region. The bedrock of Mt. Hayama is composed of hornblende-biotite granodiorite. Source area, local slope, and altitude were measured at 23 channel heads. Hydrological observation revealed stable stream runoff, indicating predominance of groundwater flow. Geomorphic investigation showed a scattered area-slope relationship at channel heads. These results correspond with the previous findings that channel initiation is not controlled by area-slope thresholds in the areas where contribution of groundwater flow to stream runoff is greater


Article of periodic

published at : Tsukuba geoenvironmental sciences / ISSN 1880-6252

Editor : JAPON

Millesime : 2011, vol. 7 [pp. 19-23]

Bibliographic references : 13 ref.

Collation : 6 fig.



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