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Geochemistry of carbonate rocks of late Cambrian age, northwestern Wyoming, and inferences for strontium isotopic composition of late Cambrian seawaterRamakrishnan, Subramanian January 2011 (has links)
Typescript (photocopy). / Digitized by Kansas Correctional Industries
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A turbulence model applied to the diurnal cycleHalliwell, Vicki M. 19 September 1985 (has links)
Under light wind conditions, the alternation of daytime
heating and nighttime cooling creates a characteristic
response in the oceanic boundary layer known as the diurnal
cycle. The Mellor/Yamada Level II turbulence closure model is
used to analyze this response pattern.
The diurnal cycle has three phases. During morning and
early afternoon, radiative solar heating produces stable stratification
in the upper ocean, which inhibits the vertical
transport of heat and momentum. Mean current speed at the
surface increases as the effects of wind stress become confined
to a shallow layer. This diurnal jet produces a mixed layer in
the second phase, where turbulence generated by the vertical
velocity shear balances the stabilizing buoyancy flux. At
night, wind mixing and convective overturning due to surface
cooling rapidly deepen the surface mixed layer during the third
phase. / Graduation date: 1986
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Redox processes in the sea and effects on trace element cyclesGerman, Christopher Russell January 1988 (has links)
No description available.
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Studies of trace metals in shelf waters of the British IslesTappin, Alan David January 1988 (has links)
No description available.
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Biogeochemical cycles of ammonia and dimethylsulphide in the marine environmentMcKee, Conor Michael January 2001 (has links)
No description available.
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A study of the biogeochemical cycle of COâ†2 in the ocean using a parcel modelXu, Yongfu January 1990 (has links)
No description available.
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On the kinetics of in vitro biogenic silica dissolutionGreenwood, James E. January 2001 (has links)
No description available.
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Geoacoustic characterization of a range-dependent environmentFallat, Mark Ryan. 10 April 2008 (has links)
No description available.
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Simulation of the acoustic pulse expected from the interaction of ultra-high energy neutrinos and seawaterGruell, Michael S. 03 1900 (has links)
The purpose of this thesis was to design, build, and test a device capable of simulating the acoustic pulse expected from the interaction between an Ultra-High Energy (UHE) neutrino and seawater. When a neutrino interacts with seawater, the reaction creates a long, narrow shower of sub-atomic particles. The energy from this reaction causes nearly instantaneous heating of the seawater on an acoustic timescale. The acoustic pulse created by the resulting thermal expansion of the water is predicted to be bipolar in shape. This work was undertaken to support a Stanford experiment, the Study of Acoustic Ultra-high energy Neutrino Detection (SAUND), that uses existing hydrophone arrays to detect UHE neutrinos from the acoustic pulse generated by their rare interactions with seawater. The device fabricated for this thesis uses the discharge current from a 4 microFarads capacitor charged to 2.5kV to heat the seawater between two copper plates. The anode and cathode plates of this "zapper" design were 6 cm in diameter and 20 cm apart. The acoustic pulse generated by the zapper was measured both in a small test tank at NPS and at the Acoustic Test Facility located at NUWC Keyport. Bipolar pulses observed at NPS on two separate test dates had average pulse lengths of 110 microseconds +/- 10 microseconds and 160 +/- 20 microseconds and average amplitudes at 1m of 1.9 +/- 0.3Pa and 4.7 +/- 0.6Pa. The average pulse length recorded at Keyport was 49 +/- 6 microseconds and the average amplitude at 1m was 6.4 +/- 0.9Pa. The pulse lengths recorded at NPS were reasonably consistent with theory, however all pressure amplitudes were about 100 times lower than predicted. The cause of the amplitude discrepancy is not completely understood at this time.
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Dissolved organic matter influences the timing of embryonic development of the purple sea urchin, Strongylocentrotus purpuratus a thesis /Hodges, Corbin J. W. Wendt, Dean E., January 1900 (has links)
Thesis (M.S.)--California Polytechnic State University, 2009. / Mode of access: Internet. Title from PDF title page; viewed on Jan. 6, 2010. Major professor: Dean E. Wendt. "Presented to the faculty of the Biological Sciences Department, California Polytechnic State University." "In partial fulfillment of the requirements for the degree [of] Master of Science in Biological Sciences." "September 2009." Includes bibliographical references (p. 61-69).
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