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Browsing Ocean 444 and Ocean 445 -- Senior Theses by Title
Now showing items 77-96 of 337
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Detecting seafloor lava flows with seafloor roughness
(2022)Much of the seafloor is currently unexplored. As such, increasing the number of options in the “tool box” is vital for studying the oceans. This study uses the North Arch Volcanic Field, an area of seafloor north of ... -
Detecting silica deposition changes in diatoms due to variable nutrient concentrations using a fluorescent silica tracer in the waters of Barkley Sound, Canada
(2010-05-28)The purpose of this study was to investigate the impact of varying nutrient ratios on growing diatoms in Trevor Channel and Effingham Inlet. The study successfully determined the percentage of actively growing diatoms ... -
Determination of respiratory processes in the Oxygen Deficient Zone of the Eastern Tropical North Pacific using targeted proteomics
(2017-07)The majority of the ocean contains sufficient oxygen to support aerobic respiration. However, when oxygen concentrations fall to levels of 10 umol/kg or less, microorganisms utilize alternative electron acceptors such as ... -
Determination of the Change in Anthropogenic Carbon Content in the Kuroshio Extension over the past 20 years using the C* Method
(2013-06)[author abstract] The oceans have been observed to be passively absorbing 1/2 of the total anthropogenic CO2 that has been emitted to the atmosphere. The goal of this study is to determine how much anthropogenic carbon ... -
Determining CO2 Balance influenced by Upwelling and Primary Production in the Equatorial Pacific Region at 180° using CO2 and O2 flux
(2023-06)The oceanic carbon cycle is one of the most important mechanisms in controlling the Earth’s climate as oceans take up to 30% of the carbon emissions, acting as a major sink. The ocean’s biological and solubility pumps are ... -
Determining Fin Whale Call Counts in the Northeast Pacific using Hydrophone Data
(2021)Fin whale call counts in the Northeast Pacific, between 2015 to 2020, were determined using hydrophone data from the Ocean Observatories Initiative’s regional cabled array database. This study sought to determine if fin ... -
Determining geological relationships that lead to the locations of focused and diffuse vents on the Brothers Volcano, using seafloor imaging and EM300 multibeam bathymetry
(2010-01-14)The Brothers volcano in the Kermadec Arc has an active and extensive hydrothermal venting system. Using multibeam sonar survey and an underwater camera (TowCam), this study documents the geological features association ... -
Determining picoplankton community and concentration near Hawaiian Islands with varying nutrient impacts
(2011-03)Picoplankton communities and nutrient concentrations from different Hawaiian islands were compared to determine if there was a change. It is important to determine if human activities cause a shift in plankton communities ... -
Determining the spatial scale of wave variance for the siting of wave energy converters in near shore coastal environments
(2015-06)[author abstract] Oceanic surface waves are one of the biggest potential energy sources available to support our ever-increasing energy demands. The construction, development, and siting of large Wave Energy Converters ... -
Determining the trophic levels of Tarr Inlet, Glacier Bay, Alaska by measuring the isotopic enrichment of 15N
(School of Oceanography, University of Washington, 2008-06-19)This study used nitrogen isotope levels to estimate trophic levels, thus providing information about the food webs in Glacier Bay. Commercial fishing is being phased out in the bay and it is assumed that food webs will be ... -
Determining variation in biological community structure due to environmental stressors around hydrothermal vent systems of Brothers volcano, Kermadec Arc, New Zealand
(2010-01-14)This study examined the environmental differences between the plumes of the Brothers volcano's two vents. Four stressors-temperature, Eh or oxidation/reduction potential, salinity and turbidity were correlated with the ... -
Development of an intrusive core complex and early landsliding on Juana Ridge, Fernandina northwest submarine rift zone, Galápagos Archipelago
(2006-03)A ~20-km-long submarine volcanic ridge off the northwestern coast of Fernandina Island, the westernmost of the Galápagos Archipelago, was studied aboard the University of Washington research vessel, the Thomas G. Thompson. ... -
Diatom abundance and community structure in Barkley Sound, Vancouver Island, BC: significant impacts on primary productivity
(2010-05-28)This research measured diatoms and phytoplankton in Barkley Sound to understand more about the process of exporting carbon from the atmosphere to the deep ocean. The study had three objectives: 1) to measure the autotrophic ... -
Diatom and dinoflagellate abundance and ecology in waters off the Hawaiian Coast
(2011-03)Diatoms and dinoflagellates are two groups of phytoplankton important in carbon sequestration, which affects climate change, and harmful algal blooms (HABs). Understanding their community ecology is important to our ability ... -
Diatom diversity and primary production in Barkley Sound and Effingham Inlet, Canada based on light microscopy
(2010-02)The goal of this investigation was to determine the relationship between community phytoplankton diversity and primary production in Barkley Sound and Effingham Inlet in March 2010. -
Diel variability in vertical distribution of mesozooplankton populations in a high chlorophyll plume of the Galapagos Archipelago, Ecuador
(2006-03)Regions of high phytoplankton (primary producers) and zooplankton (secondary producers) growth are essential in supporting growth of juvenile fish and the entire marine food web. The eastern equatorial Pacific in the ... -
Different Environmental Stressors and their Effect on TEX86 Signature of Marine Ammonia-Oxidizing Archaea
(2017-07-24)Marine ammonia-oxidizing archaea (AOA) compose their cell membranes with glycerol dialkyl glycerol tetraethers (GDGTs). These lipids are useful biomarkers for developing a paleo-climatological proxy for sea surface ... -
Dissolved Inorganic Carbon and δ13C of the Hawaiian Ocean Time Series from 1990-2021
(2022)As humans continue to produce large amounts of CO2 via the burning of fossil fuels, the concentrations and isotopic signature of the ocean’s dissolved inorganic carbon (DIC) is changing. Utilization of DIC and its δ13C as ... -
Dissolved lignin within the waters of Barkley Sound, Vancouver Island, Canada
(2010-05)This study used dissolved lignin phase as a biomarker to determine the plant sources of terrestrial derived organic carbon that enters into the waters of Barkley Sound, Vancouver Island. No studies have been conducted on ... -
Dissolved oxygen within Glacier Bay: sources, deep basin values and comparison to other glacial fjords
(School of Oceanography, University of Washington, 2008-06-19)Dissolved oxygen was measured at many stations in Glacier Bay. The purpose was to isolate the source of deep water renewal in the bay, and also to add to datasets of oceanographic observations. Glacier Bay is shallow silled, ...