Channel initiation, which is a key factor in the evolution of mountain landforms, is caused by a combination of various hydrogeomorphic processes. We modeled the channel initiation in steep mountains on the basis of the physical mechanism for sediment transport by surface and subsurface flows. Field investigations and Geographic Information Systems (GIS) analysis in the Higashi-gouchi catchment of central Japan showed that our model can well explain the area–slope relationship in steep and highly incised subcatchments, in which surface flow and shallow underground water would be the dominant flow components. In contrast, the area–slope relationship is not clear in gentler subcatchments, in which the contribution of deeper flow components (i.e., deep underground water) on the entire runoff is not negligible. Thus, the contribution of each runoff component to the total runoff is an important factor affecting the location of the channel head. Most channel heads in the deeply incised subcatchments in the Higashi-gouchi catchment have been formed by surface and subsurface flows, although many landslides have also occurred around the channel heads. Compared with the dominant flow components, activity of sediment supply from hillslopes might be a minor factor in determining the area–slope relationship for locating the channel head.
Geomorphology – Elsevier
Published: Feb 15, 2010
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera