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Deeply dredged submarine HIMU glasses from the Tuvalu Islands, Polynesia: Implications for volatile budgets of recycled oceanic crust

Creator:: Jackson, M. G., Koga, K. T., Price, A., Koppers, A. A. P., Finlayson, V. A., Konrad, K., Hauri, E. H., Kylander-Clark, A., Kelley, K. A., and Kendrick, M. A.
Abstract:: Ocean island basalts (OIB) with extremely radiogenic Pb-isotopic signatures are melts of a mantle component called HIMU (high µ, high ²³⁸U/²⁰⁴Pb). Until now, deeply dredged submarine HIMU glasses have not been available, which has inhibited complete geochemical (in particular, volatile element) characterization of the HIMU mantle. We report major, trace...
Resource Type:: Article
Full Text:: 8 10 H 2O (w t.% ) MgO (wt.%) 0 2 4 6 8 10 0 50 100 150 200 250 0 2 4 6 8 10

The effects of clouds on transient baroclinic eddies in a Mars General Circulation Model

Creator:: Rucker, Michael S.
Abstract:: The low-level baroclinic eddy activity seen in the NASA Ames Mars General Circulation Model (MGCM) for simulations under three annual dust cycles are characterized. Simulations were conducted with both radiatively active and radiatively inert clouds (RAC and non-RAC, respectively) for 11 continuous annual cycles for each dust case. Model results...
Resource Type:: Masters Thesis
Full Text:: cases. Zonal wavenumber 3 temperature variance with RAC is increased by a factor of ∼4-5. In select

Impacts of Ocean Acidification and Warming on the Growth and Development of Oregon Pink Shrimp (Pandalus jordani) Larvae

Creator:: Nguyen, Michelle B.
Abstract:: Anthropogenic carbon dioxide emissions are causing ocean acidification (OA) and ocean warming, which have negative effects on the larvae of many marine invertebrates. Oregon pink shrimp (Pandalus jordani) currently encounter upwelling events that can result in pH values as low as 7.6, and, more recently, marine heat waves that raise...
Resource Type:: Masters Thesis
Full Text:: as low as 7.6, and, more recently, marine heat waves that raise sea surface temperatures by 2-4 °C

Climate and streamflow trends in the Columbia River basin: evidence for ecological and engineering resilience to climate change

Creator:: Hatcher, Kendra L. and Jones, Julia A.
Abstract:: Large river basins integrate the signal of water from atmospheres to oceans. Climate change is widely expected to alter streamflow and potentially disrupt water management systems. We tested the ecological resilience -- capacity of headwater ecosystems to sustain streamflow under climate change – and the engineering resilience – capacity of...
Resource Type:: Article
Full Text:: were observed, but the record only covers 1998 to 2010 (Figure 4 f, h). Few days experienced 14

Hydrogen isotopic composition of C₃₇ alkenones and the ecology and physiology of coccolithophores

Creator:: Wolhowe, Matthew D.
Abstract:: A three-part study was conducted into the impact of physiological and ecological variables on the net isotopic fractionation of hydrogen, α[subscript K₃₇], expressed in C₃₇ alkenones. First, alkenone-producer production, abundance, and export were characterized in the summertime Gulf of California and Eastern Tropical North Pacific using compound-specific, labeled in situ...
Resource Type:: Dissertation
Full Text:: data. In the course of preparing Chapter 4 “Core-Top and LGM Covariation of U K ' 37 and Alkenone

Optics, structure and variability of the offshore Columbia River plume

Creator:: Saldías, Gonzalo
Abstract:: The Columbia River delivers the greatest amount of freshwater to the coastal ocean along the U.S. Pacific coast. This freshwater forms the Columbia River plume, a mesoscale plume with significant implications on coastal ocean physical, biological, chemical, and geological processes. The plume is transported south and offshore during the upwelling...
Resource Type:: Dissertation
Full Text:: rates on the offshore plume. Chapter 4 inspects the interannual variability of freshwater plumes along

Protection, Restoration, and Management of Terrestrial Habitats and Species of the Willamette Sub-Basin

Creator:: Adamus, Paul R.
Abstract:: This report and especially the accompanying Detail Files and MapFiles provide relatively detailed information on status, trends, distribution, limiting factors, and conservation needs of all of the Willamette’s wildlife species, listed plants, and vulnerable habitats. Data on habitat suitability for each species is provided by watershed (170 HUC6s), elevation (6...
Resource Type:: Technical Report
Full Text:: Example 3 178 3.2.4 Application Example 4 180 3.2.5 Application Example 5 183 4. Environmental

Magmatic processes beneath mid-ocean ridges : insights from mineral and glass chemistry in plagioclase ultraphyric basalts

Creator:: Lange, Amy E.
Abstract:: Prior to eruption at mid-ocean ridges, melts must travel through >6 km of crust from their origin in the mantle. The final composition of the melts is dependent on both the melting conditions and magmatic processes within the crust. While mid-ocean ridge basalt (MORB) glasses are commonly used to infer...
Resource Type:: Dissertation
Full Text:: TABLE OF CONTENTS (Continued) Page REFERENCES…………………………………………………. 41 4. MAGMA INTERACTIONS

ScholarsArchive@OSU

Deeply dredged submarine HIMU glasses from the Tuvalu Islands, Polynesia: Implications for volatile budgets of recycled oceanic crust

The effects of clouds on transient baroclinic eddies in a Mars General Circulation Model

Impacts of Ocean Acidification and Warming on the Growth and Development of Oregon Pink Shrimp (Pandalus jordani) Larvae

Climate and streamflow trends in the Columbia River basin: evidence for ecological and engineering resilience to climate change

Hydrogen isotopic composition of C₃₇ alkenones and the ecology and physiology of coccolithophores

Optics, structure and variability of the offshore Columbia River plume

Protection, Restoration, and Management of Terrestrial Habitats and Species of the Willamette Sub-Basin

Magmatic processes beneath mid-ocean ridges : insights from mineral and glass chemistry in plagioclase ultraphyric basalts

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