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Filtering by: Committee Member Ressel, Michael W. Academic Affiliation College of Oceanic and Atmospheric Sciences

Shoreline erosion on Sauvie Island, Oregon : Perceptions and management practices

Creator:

Long, Season

Abstract:

Sauvie Island lies at the confluence of the Columbia River and the Willamette River near Portland, Oregon. Flooding, erosion, and deposition of sediments have been part of the natural evolution of the island. However, with the construction of multiple dams in the Columbia River Basin, levees, and hardening of upstream...

Resource Type:

Capstone Project
Deconvolving the sedimentary phases of barium using flow-through time-resolved analysis

Creator:

Hsieh, Chih-Ting

Abstract:

The distribution of barite (BaSO₄) in marine sediments has long been studied as a proxy for paleoproductivity. While pure barite is known to be a stable mineral in oxic sediments, it is also known that variations in the Sr/Ba ratio influence its solubility and liability during early diagenesis. To extract...

Resource Type:

Masters Thesis

Full Text:

sediment in South Pacific (KN7812- 17BC 0-5 cm at 49.552°S-179.702°W). Sediment samples were treated with
Silicon biogeochemistry in the open-ocean surface waters : insights from the Sargasso Sea and equatorial Pacific

Creator:

Krause, Jeffrey W.

Abstract:

Diatoms are a ubiquitous group of plankton responsible for 20-40% of oceanic primary production, and a higher fraction of organic matter export to the ocean interior. Diatoms actively transport dissolved inorganic silicon into their cells, and through the process of silicification (i.e. biogenic silica production) they build tough and intricate...

Resource Type:

Dissertation