The gravitational anomalies of simple bodies (sphere, cylinder, and fault) were used to develop methods for analyzing gravity data in the frequency domain. The Fourier transforms of the functional representations of the theoretical gravitational anomalies of these bodies were obtained. Mathematical formulations were made between the transform versus frequency relationships...
In July 1964 three seismic refraction profiles were recorded
over Stonewall Bank (44°32'N, 124°24'W) to determine gross sub-bottom
geological structure to depths of thousands of feet. In August
1964 a continuous seismic reflection profiler was used to document
shallow geological structure within the rocks forming the Bank.
Stonewall Bank is...
The vertical and radial components of a seismic P wave can be
decomposed by a Fourier transform into two sets of nonterminating
sinusoidal waves with one set for each component. The tangent of the
vertical transform divided by the radial transform gives by definition
he apparent angle of emergence for...
The first cycle of seismic waves recorded at distances of 45,
300 and 355 km. from the GNOME nuclear explosion was used to determine
whether the near source wave characteristics at 0.3 km.
could be determined from distance measurements. Both head wave
and body wave propagation were considered. First the...
From measurements of thermal and electrical conductivities of
64 ocean sediment samples obtained from piston cores taken off the
Oregon Coast, and from 37 water-saturated sandstone samples analyzed
by Zierfuss and Van der Vliet (1956), as well as 51 thermal
conductivities and water contents of ocean sediments analyzed by
Ratcliffe...
A marine geophysical study using shallow seismic reflection, gravity and magnetic methods of investigation was done for an offshore area near Newport, Oregon. The area is bounded by the latitudes 44°1O' to 44°50' N. and longitudes 124°07' to 124°30' W. The interpretation of observational data showed that the geology of...
This thesis is concerned with near source primary seismic waves generated by, the Gnome, Hardhat, Shoal and Haymaker underground nuclear explosions. Records of ground motion between 0.3 and 20.0 kilometers from the sources were analyzed in terms of displacement amplitude and energy variations with distance. The observed data have been...
Secondary metabolites (SMs) play an integral role in the life history of most fungal species. Fungal metabolomic studies provide insights into how fungi perform certain ecological functions, how they compete and interact with other organisms, and the breadth of fungal chemodiversity. Fungal SMs have also been utilized for a variety...
Rhizopogon vesiculosus is a common ectomycorrhizal (EM) symbiont of Pseudotusga menziesii (Douglas-fir) in the coast range of the Pacific Northwest. The species has been studied for its systematics, genet size, population structure, and competitive ability in several field and experimental studies. This thesis seeks to provide a more thorough characterization...
A finite element formulation is developed for the prediction of
the large displacement response of pipelines which are placed upon
irregularly contoured marine sediments and are subsequently subjected
to episodic hydrodynamic loads. The equations of motion during each
episode of extreme wave activity are obtained from a variational form
of...
