Browsing Oceanography by Title
Now showing items 76-95 of 133
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An observational study of Davis Strait transports
(2013-07-25)Davis Strait is one of two main gateways where freshwater from the Arctic enters the North Atlantic. An observing system began operating in Davis Strait in September 2004 with the goal of providing sustained, long-term ... -
Observations and Analysis of the Internal Tide in the Monterey Bay Region
(2012-09-13)The Monterey Bay region, with bathymetric features including Monterey Submarine Canyon and Sur Platform, has been a site for examination of generation, propagation and dissipation of the internal tide. Observations of ... -
Observations and physics of amplified subinertial tidal currents in stratification and mean shear flow at a seamount
(1996)Three-dimensional structure of amplified diurnal tidal currents (subinertial, 0.69f) at Cobb Seamount (130.8$\sp\circ W,$ 46.8$\sp\circ N),$ collected by ship-mounted Acoustic Doppler Current Profiler, agrees well with a ... -
Observations of Near-Surface Temperature and Salinity from Profiling Floats: Vertical Variability, Structure, and Connection to Deeper Properties
In response to the changing climate, it is probable that there is an intensification of the oceanic hydrologic cycle underway. Due to the difficulty of observing the ocean, especially very close to the sea surface, we lack ... -
Ocean Boundary Layer Dynamics and Air-Sea Interaction
The dynamics of the ocean surface boundary layer are examined using theory, high-resolution moored observations from the equatorial Atlantic ocean, and idealized modeling. An approximate solution is found for the ocean ... -
Ocean-atmosphere feedbacks in two tropical atmospheric regimes: the inter-tropical convergence zone and the trade winds
Air-sea interactions are a critical component of the global climate system. Despite this, uncertainty remains in our understanding of air-sea interaction across spatial scales, particularly on small scales, which are not ... -
On the structure of the internal wave field: the impact of the distribution of shear and strain variance in wavenumber-frequency space on mixing estimates
Data from an archive of McLane Moored Profiler (MP) deployments are used to investigate the role of internal waves, and in general physical processes occupying this frequency range, on the dissipation of kinetic energy and ... -
On the topic of oceanic variability near the Coriolis frequency; generation mechanisms, observations, and implications for interior mixing
Internal waves with frequency near the Coriolis frequency, the frequency of oscillations due to the Coriolis acceleration (commonly denoted by the symbol f), are ubiquitous throughout the world’s oceans. However, observational ... -
Organic carbon input, degradation, and preservation in continental margin sediments: an assessment of the role of a strong oxygen deficient zone
(1998)Rates of organic carbon input, oxidation and burial in marine sediments were studied with the goal of assessing the role of an oxygen deficient water column in the preservation of organic matter. Factors influencing these ... -
Particles, prey, and purse seines: A data-driven investigation into the impacts of climate on biological processes across the global ocean
In this dissertation, I use existing large-scale public datasets to examine how climate variability and change affect ecosystem processes throughout the global oceans, with some emphasis on the Tropical Pacific because of ... -
Passive acoustic detection and measurement of rainfall at sea and an empirical ocean ambient sound model
(2004)Rainfall over the ocean is one of the most important climatic parameters for both oceanic and atmospheric science. Traditional accumulation-type rain gauges are difficult to operate at sea, and so an alternate technique ... -
Phase separation in submarine hydrothermal systems: evidence from the Juan de Fuca Ridge
(1990)In order to understand processes affecting the composition of hydrothermal fluids, a detailed study was made of the chemical variability within two vent fields along the Juan de Fuca Ridge. Results indicate that phase ... -
Processes and records of coastal sediment dispersal in contrasting deltaic systems
Rivers are responsible for most sediment delivery to the ocean, and at the river-ocean transition, a complex set of processes and pathways shape the ultimate fate of particulates. Conceptual and numerical models of ... -
Quantification of Life-stage Transition Behaviors in Harmful Algae and their Implications for Pelagic and Benthic Distributions
Harmful algal blooms (HABs) occur when accumulations of algae or algal toxins have adverse impacts on aquatic ecosystems, public health and/or coastal resources. Many of the behavioral and physiological functional traits ... -
Quantifying Sea-Ice Volume Flux using Moored Instrumentation in the Bering Strait
(2012-09-13)The Bering Strait is the sole pathway linking the Pacific and Arctic Oceans, and carries one-third of the freshwater entering the Arctic. Although the strait's throughflow dominates the hydrography of the highly productive ... -
Quantifying the deep: The importance of diagenetic reactions to marine geochemical cycles
Marine sediments play a fundamental role in long-term element cycles on Earth and host an expansive microbial ecosystem known as the “oceanic deep biosphere”. The biogeochemical and inorganic reactions that occur in the ... -
Quantifying the response of diatom nitrogen metabolism to environmental changes
(2013-11-14)Diatoms are microscopic unicellular organisms that fix as much carbon annually as all terrestrial rainforests combined and, through nitrogen uptake and carbon drawdown, link global carbon and nitrogen cycles. As the most ... -
Reconstructing the oceanic p13sSeuss effect
(1999)This dissertation consists of two components: deriving along-isopycnal advection rates in the North Pacific from chlorofluorocarbon (CFC) distributions and determining 13C/12C changes in the global ocean due to oceanic ... -
Resolving the molecular ecology of marine microbial eukaryotes with metatranscriptomes
The surface waters of the North Pacific ocean host diverse populations of microbial eukaryotes, who collectively mediate the flux of energy and matter in their environment with a significant impact on global biogeochemical ...