Search Constraints

Start Over
Filtering by: Advisor Hermann, Richard K. Remove constraint Advisor: Hermann, Richard K. Decade 1980-1989 Remove constraint Decade: 1980-1989

Search Results

  • Production and turnover of fine roots of mature Douglas-fir in relation to site

    Creator:
    Santantonio, Daniel
    Abstract:
    Fine roots are a dynamic component of Douglas-fir ecosystems. Changes in standing crops indicate that fine roots require a major portion of the stand's energy resources to fulfill their role in the functioning of these systems. We observed standing crops of live and dead fine (< 1 mm diameter) and...
    Resource Type:
    Dissertation

  • Shear wave attenuation in unconsolidated laboratory sediments

    Creator:
    Brunson, Burlie A.
    Abstract:
    Shear wave attenuation measurements were made using ceramic bimorph transducers to excite transverse vibrations in a cylindrical column of unconsolidated sediment. Three different water-saturated sediments were used in an attempt to determine the effects of grain shape and sorting on the frequency dependence of attenuation. The mean grain size of...
    Resource Type:
    Dissertation
    Full Text:
    committee chairman, Dr. Richard K. Johnson. During the last two years, I have had the plea- sure