Turbulence resulting from Kelvin–Helmholtz instability in layers of localized stratification and
shear is studied by means of direct numerical simulation. Our objective is to present a
comprehensive description of the turbulence evolution in terms of simple, conceptual pictures of
shear–buoyancy interaction that have been developed previously based on assumptions of...
A set of 119 study trees was identified in a 65 year-old Douglas-fir stand after a thinning operation conducted seven years ago using pre-planned skid trails and groundbased machinery. Some of the trails were tilled using a winged subsoiler after this operation in order to alleviate the effect of compaction...
El Niflo and La Nifia are oceanographic and atmospheric phenomena that have been
catalogued for well over a centuly. In El Nifio years, Peru's otherwise thy west coast is
subjected to torrential rainfall. Higher ocean temperatures off the coast are deemed the
culprit. Attempts to quantify this began in the...
A nonlinear 2½-layer reduced gravity primitive equations (PE) ocean model is used to assimilate sea surface
temperature (SST) data from the Tropical Atmosphere–Ocean (TAO) moored buoys in the tropical Pacific. The
aim of this project is to hindcast cool and warm events of this part of the ocean, on seasonal...
Communities across the United States are becoming more culturally and ethnically diverse. Indeed, demographers predict that by 2030 most of America’s school-age children will be from a minority group and by 2050, so will most Americans. This increasing diversity changes the nature of the population served by volunteer-based organizations, and...
This pest of meadowfoam is a small fly in the family Drosophilidae. It has been identified tentatively as Scaptomyza apicalis Hardy. It is
commonly referred to as the meadowfoam fly (MFF). It occurs throughout the Willamette Valley in most commercial plantings of meadowfoam
(Limnanthes alba). Thus far, meadowfoam is the...
Nitrogen application, either from commercial fertilizers such as ammonium sulfate or from organic sources such as fish waste, is
essential for cranberry production. This publication addresses the amount, timing, and source of nitrogen (N) for bearing cranberry beds in North America. The information provided about the pathways
of N in...
Moles belong to the mammalian order Insectivora,
the insect eaters. Often, however, they are lumped
incorrectly with the rodents, which include mice, rats,
squirrels, and other gnawing mammals in the order Rodentia.
Direct numerical simulations of turbulence resulting from Kelvin–Helmholtz instability in stably
stratified shear flow are used to study sources of anisotropy in various spectral ranges. The set of
simulations includes various values of the initial Richardson and Reynolds numbers, as well as
Prandtl numbers ranging from 1 to 7. We...