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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:: crust Jackson, M. G., Koga, K. T., Price, A., Konter, J. G., Koppers, A. A. P., Finlayson, V. A

Geochemical evidence in the northeast Lau Basin for subduction of the Cook-Austral volcanic chain in the Tonga Trench

Creator:: Price, Allison A., Jackson, Matthew G., Blichert-Toft, Janne, Blusztajn, Jerzy, Conatser, Christopher S., Konter, Jasper G., Koppers, Anthony A. P., and Kurz, Mark D.
Abstract:: Lau Basin basalts host an array of geochemical signatures that suggest incorporation of enriched mantle source material often associated with intraplate hotspots, but the origin of these signatures remain uncertain. Geochemical signatures associated with mantle material entrained from the nearby Samoan hotspot are present in northwest Lau Basin lavas, and...
Resource Type:: Article
Full Text:: Correspondence to: A. A. Price, price@umail.ucsb.edu Citation: Price, A. A., M. G. Jackson, J. Blichert- Toft, J

Age systematics of two young en echelon Samoan volcanic trails

Creator:: Koppers, Anthony A. P., Russell, Jamie A., Roberts, Jed, Jackson, Matthew G., Konter, Jasper G., Wright, Dawn J., Staudigel, Hubert, and Hart, Stanley R.
Abstract:: The volcanic origin of the Samoan archipelago can be explained by one of three models, specifically, by a hot spot forming over a mantle plume, by lithospheric extension resulting from complex subduction tectonics in the region, or by a combination of these two processes, either acting sequentially or synchronously. In...
Resource Type:: Article
Full Text:: , A. A. P., J. A. Russell, J. Roberts, M. G. Jackson, J. G. Konter, D. J. Wright, H. Staudigel, and S

Satellite-based detection and monitoring of phytoplankton blooms along the Oregon coast

Creator:: McKibben, S. M., Strutton, P. G., Foley, D. G., Peterson, T. D., and White, A. E.
Abstract:: We have applied a normalized difference algorithm to 8 day composite chlorophyll-a (CHL) and fluorescence line height (FLH) imagery obtained from the Moderate Resolution Imaging Spectroradiometer aboard the Aqua spacecraft in order to detect and monitor phytoplankton blooms in the Oregon coastal region. The resulting bloom products, termed CHL[subscript rel]...
Resource Type:: Article
Full Text:: Oregon coast S. M. McKibben,1 P. G. Strutton,2 D. G. Foley,3 T. D. Peterson,4 and A. E. White1 Received

Early to Late Holocene Surface Exposure Ages From Two Marine-Terminating Outlet Glaciers in Northwest Greenland

Creator:: Reusche, Melissa M., Marcott, Shaun A., Ceperley, Elizabeth G., Barth, Aaron M., Brook, Edward J., Mix, Alan C., and Caffee, Marc W.
Abstract:: Terrestrial chronologies from southern Greenland provide a detailed deglacial history of the Greenland Ice Sheet (GIS). The northern GIS margin history, however, is less established. Here we present surface exposure ages from moraines associated with two large outlet glaciers, Petermann and Humboldt, in the northwestern sector of the GIS. These...
Resource Type:: Article
Full Text:: northwest Greenland Authors Melissa M. Reusche1*, Shaun A. Marcott1*, Elizabeth G. Ceperley1, Aaron M

Precipitation and winter temperature predict long-term range-scale abundance changes in Western North American birds

Creator:: Illán, Javier Gutiérrez, Thomas, Chris D., Jones, Julia A., Wong, Weng-Keen, Shirley, Susan M., and Betts, Matthew G.
Abstract:: Predicting biodiversity responses to climate change remains a difficult challenge, especially in climatically complex regions where precipitation is a limiting factor. Though statistical climatic envelope models are frequently used to project future scenarios for species distributions under climate change, these models are rarely tested using empirical data. We used long-term...
Resource Type:: Article
Full Text:: ., Thomas, C. D., Jones, J. A., Wong, W.-K., Shirley, S. M., & Betts, M. G. (2014). Precipitation and

A springtime source of toxic Pseudo-nitzschia cells on razor clam beaches in the Pacific Northwest

Creator:: Hickey, Barbara M., Trainer, Vera L., Kosro, P. Michael, Adams, Nicolaus G., Connolly, Thomas P., Kachel, Nancy B., and Geier, Susan L.
Abstract:: Concentrations of domoic acid (DA) above the regulatory limit in Washington coast razor clams are usually higher on northern beaches from summer to fall. Recent field studies have confirmed that the primary source of toxic Pseudo-nitzschia (PN) cells in those seasons is a semi-retentive topographically trapped seasonal eddy located offshore...
Resource Type:: Article
Full Text:: springtime source of toxic Pseudo-nitzschia cells on razor clam beaches in the Pacific Northwest Barbara M

The WAIS Divide deep ice core WD2014 chronology – Part 1: Methane synchronization (68–31 kaBP) and the gas age–ice age difference

Creator:: Buizert, C., Cuffey, K. M., Severinghaus, J. P., Baggenstos, D., Fudge, T. J., Steig, E. J., Markle, B. R., Winstrup, M., Rhodes, R. H., Brook, Edward J., Sowers, T. A., Clow, G. D., Cheng, H., Edwards, R. L., Sigl, M., McConnell, J. R., and Taylor, K. C.
Abstract:: The West Antarctic Ice Sheet Divide (WAIS Divide, WD) ice core is a newly drilled, high-accumulation deep ice core that provides Antarctic climate records of the past ~68 ka at unprecedented temporal resolution. The upper 2850 m (back to 31.2 ka BP) have been dated using annual-layer counting. Here we...
Resource Type:: Article

Persistent spatial structuring of coastal ocean acidification in the California Current System

Creator:: Washburn, L., Russell, A., Menge, B. A., Hill, T., Cheriton, O., Nielsen, K. J., McManus, M. A., Feely, R. A., Gouhier, T., Byrne, R. H., Friederich, G., Sanford, E., Hacker, S., Chan, F., Blanchette, C. A., Gaylord, B., Barth, J. A., Sevadjian, J., Hofmann, G., and Chavez, F.
Abstract:: The near-term progression of ocean acidification (OA) is projected to bring about sharp changes in the chemistry of coastal upwelling ecosystems. The distribution of OA exposure across these early-impact systems, however, is highly uncertain and limits our understanding of whether and how spatial management actions can be deployed to ameliorate...
Resource Type:: Article
Full Text:: . Gouhier10, S. Hacker1, T. Hill8,11, G. Hofmann12, M. A. McManus13, B. A. Menge1, K. J. Nielsen14, A

The LatMix Summer Campaign: Submesoscale Stirring in the Upper Ocean

Creator:: Shcherbina, Andrey Y., Sundermeyer, Miles A., Kunze, Eric, D'Asaro, Eric, Badin, Gualtiero, Birch, Daniel, Brunner-Suzuki, Anne-Marie E. G., Callies, Jörn, Kuebel Cervantes, Brandy T., Claret, Mariona, Concannon, Brian, Early, Jeffrey, Ferrari, Raffaele, Goodman, Louis, Harcourt, Ramsey R., Klymak, Jody M., Lee, Craig M., Lelong, M.-Pascale, Levine, Murray D., Lien, Ren-Chieh, Mahadevan, Amala, McWilliams, James C., Molemaker, M. Jeroen, Mukherjee, Sonaljit, Nash, Jonathan D., Özgökmen, Tamay, Pierce, Stephen D., Ramachandran, Sanjiv, Samelson, Roger M., Sanford, Thomas B., Shearman, R. Kipp, Skyllingstad, Eric D., Smith, K. Shafer, Tandon, Amit, Taylor, John R., Terray, Eugene A., Thomas, Leif N., and Ledwell, James R.
Abstract:: Lateral stirring is a basic oceanographic phenomenon affecting the distribution of physical, chemical, and biological fields. Eddy stirring at scales on the order of 100 km (the mesoscale) is fairly well understood and explicitly represented in modern eddy-resolving numerical models of global ocean circulation. The same cannot be said for...
Resource Type:: Article

ScholarsArchive@OSU

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

Geochemical evidence in the northeast Lau Basin for subduction of the Cook-Austral volcanic chain in the Tonga Trench

Age systematics of two young en echelon Samoan volcanic trails

Satellite-based detection and monitoring of phytoplankton blooms along the Oregon coast

Early to Late Holocene Surface Exposure Ages From Two Marine-Terminating Outlet Glaciers in Northwest Greenland

Precipitation and winter temperature predict long-term range-scale abundance changes in Western North American birds

A springtime source of toxic Pseudo-nitzschia cells on razor clam beaches in the Pacific Northwest

The WAIS Divide deep ice core WD2014 chronology – Part 1: Methane synchronization (68–31 kaBP) and the gas age–ice age difference

Persistent spatial structuring of coastal ocean acidification in the California Current System

The LatMix Summer Campaign: Submesoscale Stirring in the Upper Ocean

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