Observations of mixing over the continental slope using a towed body reveal a great lateral extent (several kilometers) of continuously turbulent fluid within a few hundred meters of the boundary at depth 1600 m. The largest turbulent dissipation rates were observed over a 5 km horizontal region near a slope...
The American Fisheries Society (AFS) recognizes the need for conservative and robust management of Pacific rockfishes because of naturally low population growth, the overfished state of many of the stocks, and complex nature of the mixed-stock fisheries (60-plus species). The AFS recommends that catch information be collected on a species-specific...
Recent successes of hatcheries in producing coho salmon have stimulated searches for additional hatchery locations in coastal watersheds. In the past hatcheries were designed with gravity flow water supplies, but in more recent years pumping the water has proven feasible. Because of the acceptance of pumping, naturally impounded waters are...
The analysis of 64 rock samples from Saudi Arabia and three
samples from the axial trough of the Red Sea has been done.
Instrumental neutron activation analysis (INAA) was the analytical
tool used for the analysis of at least 18 and as many as 24 elements
in these 67 rock...
Two modifications to an existing scheme of tidal
mixing are implemented in the coarse resolution ocean component
of a global climate model. First, the vertical distribution
of energy flux out of the barotropic tide is determined
using high resolution bathymetry. This shifts the levels of
mixing higher up in the...
Two modifications to an existing scheme of tidal
mixing are implemented in the coarse resolution ocean component
of a global climate model. First, the vertical distribution
of energy flux out of the barotropic tide is determined
using high resolution bathymetry. This shifts the levels of
mixing higher up in the...
Full Text:
conditions, Ocean Model., 19,
125–137, 2007.
Moum, J. N., Caldwell, D. R., Nash, J. D., and Gunderson, G. D
Two modifications to an existing scheme of tidal
mixing are implemented in the coarse resolution ocean component
of a global climate model. First, the vertical distribution
of energy flux out of the barotropic tide is determined
using high resolution bathymetry. This shifts the levels of
mixing higher up in the...
Altimetric data from the TOPEX/POSEIDON mission will be used for studies of global ocean circulation and marine geophysics. However, it is first necessary to remove the ocean tides, which are aliased in the raw data. The tides are constrained by two distinct types of information: the hydrodynamic equations which the...
The School of Oceanography, Oregon State University, initiated a study during the spring of 1984 to investigate the utilization of Netarts Bay by juvenile churn salmon. Specific objectives the first year were to determine: 1) the relative numbers of hatchery arid wild churn salmon, 2) the nursery areas utilized by...
We describe a new algorithm for robust principal component analysis (PCA) of electromagnetic (EM) array data, extending previously developed multivariate methods to include arrays with large data gaps, and only partial overlap between site occupations. Our approach is based on a criss-cross regression scheme in which polarization parameters and spatial...
Several methods are developed for analyzing data containing a highly variable internal tide. In particular, the methods are aimed at the analysis of moored observations with relatively few measurements in the vertical. The analysis depends upon an "elliptical decomposition" that is a generalization of the familiar "rotary decomposition." The technique...
Long-period global-scale electromagnetic induction studies of deep Earth conductivity are based almost exclusively on magnetovariational methods and require accurate models of external source spatial structure. We describe approaches to inverting for both the external sources and three-dimensional (3-D) conductivity variations and apply these methods to long-period (T≥1.2 days) geomagnetic observatory...