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Generator earthing: a review and analysis of past and current practice with special reference to protection and systems conditionsHoltzhausen J.P. 05 February 2015 (has links)
No description available.
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Geostrophic and Sverdrup transports as indices of flow in the Gulf of AlaskaFavorite, F. 12 July 1968 (has links)
The intensification of cyclonic winds in the Gulf of Alaska
during winter belies the relatively constant geostrophic circulation
as being indicative of actual flow. In the absence of direct current
measurements, effects of various meteorological phenomena have
been eliminated from monthly mean sea level measurements over the
decade 1950 to 1959, and the resulting height anomalies equated to
monthly mean Sverdrup transports. A linear relationship is obtained,
except during summer when it permits an estimate of the increase in
recorded sea level due to runoff. The data suggest that during summer
the geostrophic transport is a good indication of general flow,
but that during winter the distribution of mass does not adjust to the
Sverdrup transport, and the resulting barotrophic flow is about one
and one-half times the geostrophic flow during this period. Mean
seasonal Sverdrup transport indicates maximum recirculation in the
Gulf of Alaska gyre during winter, a reduced but equal recirculation
during summer and fall, but none during spring.
These results conflict with existing interpretations of flow in
the Gulf of Alaska, and should form the basis for renewed oceanographic
explorations in this region. / Graduation date: 1969
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Computer analysis of the surface current field off Oregon based on drift bottle dataLung, Hu Ernest 30 April 1973 (has links)
The fall-winter surface current field off Oregon was determined
by analysis of ten years of drift bottle data. Computer programs were
developed for generating bottle tracks on a numerical grid, for interpolating
bottle velocity components to fill void grid points and for
smoothing irregularities in the velocity fields. Charts are presented
showing the spatial distribution of surface currents determined in the
study area of 5° latitude by 2-1/2° longitude.
The mean currents for the fall-winter season have a predominantly
northerly flow with speeds increasing from the south to the
north (from 0.01 to 0.35 knots). This probably is a consequence of
the increase in speed of southerly winds from south to north in the
study area during the fall-winter season. The northly flow in October
during the years 1961-70, when compared with the dominant southerly
flow during this month from measurements prior to 1935, may indicate
a major change of Davidson-California Current System within the
past forty years. Apparent onshore flow may be introduced by bottle
diffusion; this flow is prominant at all latitudes along which bottle
releases are concentrated. An offshore flow component north of
46°30'N may be related to the Columbia River discharge and the
westward extension of land. / Graduation date: 1973
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Currents and water masses at the entrance to the Gulf of California, spring 1970Alvarez Sanchez, Luis Gustavo 12 August 1974 (has links)
Hydrographic data and drogue observations were used to describe
the circulation and water masses in the upper 500 meters of
the region of the entrance to the Gulf of California in the early spring
of 1970.
The thermohaline structure of the water and the general circulation
in the vicinity of the entrance to the Gulf of California indicated
that four water masses were present. California Current water on
the western side of the entrance, Subtropical Surface water in the
middle part and Gulf water on the eastern side. Underlying these
three waters, Subtropical Subsurface water was found from about
150 to 500 meters.
The geostrophic calculations indicate that a broad region of
outflow from the Gulf existed on the eastern side associated with a
marked upward displacement of isopycnals towards the east.
Speeds were near 30 cm/sec at the surface and decreased to less
than 3 cm/sec at 300 meters. Outflow also occurred on the western
side, near the Baja California coast, at lower speeds. Inflow to the
Gulf was observed near the middle part of the entrance at speeds of
30 to 40 cm/sec at the surface, decreasing to less than 6 cm/sec at
300 meters.
The drogue observations were in agreement with the general
circulation pattern inferred from geostrophic currents. Drogue and
geostrophic velocities showed agreement better than 70% at 10 and 50
meters.
The decrease of geostrophic velocity with depth indicates that
a baroclinic condition existed. Comparison of these velocities with
the drogue measurements indicates that the baroclinic circulation
was predominant in the upper 100 meters.
In the upper 150 meters the low salinity water from the California Current was flowing into the Gulf. The high salinity Gulf water
was found in the regions of outflow as to be expected to avoid accumulation
of salt inside the Gulf by strong evaporation. / Graduation date: 1975
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An investigation of upwelling along the Oregon coastSmith, Robert Lloyd 13 May 1964 (has links)
The oceanic phenomenon of upwelling along the Oregon coast is
examined. Upwelling in both the open ocean and coastal regions is
discussed. An idealized model is used, envisaging the ocean off
Oregon to consist of homogeneous surface and deep layers separated
by a pycnocline. The equations of motion are solved to yield the vertical
velocity at the base of the surface layer. A comparison is made
between the model and results inferred from hydrographic data.
In the open ocean region qualitative agreement is observed between
the wind stress curl and the depth of the surface layer. Geostrophic
meridional transports relative to the 1000 decibar surface
were computed and found to be of the order of the uncertainty. In the
coastal upwelling region surface layer zonal transports were computed
from the meridional component of the mean wind stress and
compared with values inferred from oceanographic data. Coastal upwelling
along the Oregon coast is clearly associated with the northerly
(longshore) component of the wind stress. / Graduation date: 1964
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Eddy forcing of the mean circulation in the western north Atlantic /Brown, Ellen Dunning. January 1900 (has links)
Thesis (Ph. D.)--Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1984. / Includes bibliographical references (p. 175-181).
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Video-based particle image velocimetry of laboratory rip currentsHe, Liang. January 2007 (has links)
Thesis (M.C.E.)--University of Delaware, 2006. / Principal faculty advisor: Jack Puleo, Dept. of Civil & Environmental Engineer. Includes bibliographical references.
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Upper current structure and variability in the southwestern Japan/East Sea /Mitchell, Douglas A. January 2003 (has links)
Thesis (Ph. D.)--University of Rhode Island, 2003. / Typescript. Includes bibliographical references (leaves 127-130).
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Next generation of current sensors for aeronautics preliminary designs /Babinet, Cyril. January 2008 (has links)
Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2008. / Committee Co-Chair: Dr. Jianmin Qu; Committee Co-Chair: Dr. Mohammed Cherkaoui; Committee Member: Dr. Christophe Giraud-Audine; Committee Member: Dr. Nico Declercq. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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An investigation of diurnal variability in wind and ocean currents off Huntington Beach, California /Taylor, Kelly E. January 2003 (has links) (PDF)
Thesis (M.S. in Meteorology and Oceanography)--Naval Postgraduate School, March 2003. / Thesis advisor(s): Leslie K. Rosenfeld, Carlyle H. Wash. Includes bibliographical references (p. 85-86). Also available online.
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