| Abstract: | The analysis of topographic and hydrologic data gathered during studies of erosion in semiarid areas of Western United States show the following relation: (a) Mean annual sediment yield from small drainage basins is related to a ratio of basin relief to length; (b) mean annual runoff from small drainage basins is related to drainage density; (c) mean annual sediment yield per unit area decreases with increase in drainage area; (d) the form of some convex hill slopes is related to surficial creep; (e) asymmetry of drainage basins, including differences in hill-slope erosion and drainage density, is related to microclimatic variations on slopes of diverse exposure; .(f) the cutting of discontinuous gullies is closely related to steepening by deposition of the semiarid valley floor; (g) aggradation in ephemeral streams seems to be most prevalent in reaches where the ratio of contributing drainage area to channel length is relatively small; and (h) streamchannel shape, expressed as a width-depth ratio, is related to the percentage of silt-clay in bed and bank alluvium. The above relations cannot be detected without measurement of terrain characteristics. They further indicate the importance of quantitative terrain analysis in studies of erosion. |
| Genre: | USGS Numbered Series |
| ProdID: | 3468 |
| Citation Author: | Schumm, Stanley Alfred; Hadley, R. F. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | iii, 14 p. :diagrs., profile. ;27cm. |
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| Citation Publisher: | [U.S. Geological Survey], |
| Citation Series: | Circular |
| Citation Series Code: | CIR |
| Citation Series Number: | 437 |
| Citation Search Results Text: | Progress in the application of landform analysis in studies of semiarid erosion; 1961; CIR; 437; Schumm, Stanley Alfred; Hadley, R. F. |
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| Citation Year: | 1961 |
| Type: | citation/reference |
| Text: | Progress in the application of landform analysis in studies of semiarid erosion; 1961; CIR; 437; Schumm, Stanley Alfred; Hadley, R. F. |
| URL (THUMBNAIL): | http://pubs.usgs.gov/circ/1961/0437/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/circ/1961/0437/report.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | [U.S. Geological Survey], |
