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Hillslope soil erosion estimated from aerosol concentrations, North Halawa Valley, Oahu, Hawaii

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Hillslope soil erosion estimated from aerosol concentrations, North Halawa Valley, Oahu, Hawaii; 1997; Article; Journal; Geomorphology; Hill, B. R.; Fuller, C. C.; DeCarlo, E. H.

Summary

Concentrations of aerosolic quartz and 137Cs were used to estimate rates of hillslope soil erosion during 1990-91 in the North Halawa Valley on the island of Oahu, Hawaii. Fluvial transport of quartz was estimated to be 6.1 Mg in 1990 and 14.9 Mg in 1991. Fluvial transport of 137Cs from North Halawa Valley was estimated to be 1.29 ?? 109 pCi in 1991. Results were used with quartz contents, 137Cs activities, and bulk densities of hillslope soils to compute rates of basinwide hillslope soil erosion ranging from 0.1 to 0.3 mm yr-1. These rates are within the range of previous estimates of denudation computed for drainage basins on Oahu. The aerosol-concentration approach, therefore, is a useful method for assessing basinwide soil erosion.

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Type Scheme Key
local-index unknown 70019462
local-pk unknown 70019462
series unknown Geomorphology

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journalGeomorphology
parts
typevolume
value20
typeissue
value1-2
languageEnglish
citationTypeArticle

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