Download or read book Seasonal Creep of Silty Clay Soil and the Formation of Small Gullies written by Alejandro E. Soto and published by . This book was released on 1977 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes a two-year investigation of seasonal creep in a black silty clay soil that is common in the San Francisco Bay Area. Because of drought during the two years, the soil did not become entirely saturated and there apparently was no creep, so that field instrumentation provided no new data on creep rates. Nevertheless, much data was obtained on seasonal changes of the soil and on displacements produced by shrinking and swelling of the soil. The data indicate that directions and magnitudes of horizontal displacements of soil that occur between a wet and a dry season are controlled by the positions and attitudes of nearby shrinkage cracks. These displacements, averaged over a large area, are therefore random. During the wet seasons wetting of the soil occurred along an irregular front advancing from the ground surface. The wetting front advanced more rapidly in debris that had filled shrinkage cracks than in the soil in polygons surrounded by shrinkage cracks. Many of the features of seasonal creep of the silty clay soils can be understood in terms of a theoretical model that utilizes rate process theory. Three essential features of creep of this soil are that the creep displacement profile is convex upwards, that creep begins shortly after initial wetting of the soil, and that creep eventually stops without obvious changes in water content.

Download or read book Geographical Abstracts written by and published by . This book was released on 1981 with total page 870 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geographical Abstracts Index written by and published by . This book was released on 1979 with total page 814 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Annual Index written by and published by . This book was released on 1978 with total page 1034 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1978 with total page 1002 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Survey of various Counties Etc written by and published by . This book was released on 1963 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Survey written by and published by . This book was released on 1978 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Survey written by United States. Soil Conservation Service and published by . This book was released on 1960 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Survey Putnam County Tennessee written by George T. Jackson and published by . This book was released on 1963 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil survey of Putnam County Tennessee written by and published by . This book was released on 1963 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Survey of Santa Barbara County California South Coastal Part written by Gordon E. Shipman and published by . This book was released on 1981 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Survey of Elbert Franklin and Madison Counties Georgia written by Louie W. Frost and published by . This book was released on 1979 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil survey of Jefferson County Mississippi written by William M. Morris and published by . This book was released on 1980 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Survey of Allen Parish Louisiana written by and published by . This book was released on 1980 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Survey of Chattooga Floyd and Polk Counties Georgia written by Ray James Tate and published by . This book was released on 1978 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Survey of Washington and Wilkinson Counties Georgia written by Ernest Hubert Smith and published by . This book was released on 1985 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Survey of Marion County Alabama written by James A. Cotton and published by . This book was released on 1979 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: