Index Catalog // ScholarsArchive@OSU

Abrupt change in atmospheric CO₂ during the last ice age

Creator:: Ahn, Jinho, Brook, Edward J., Schmittner, Andreas, and Kreutz, Karl
Abstract:: During the last glacial period atmospheric carbon dioxide and temperature in Antarctica varied in a similar fashion on millennial time scales, but previous work indicates that these changes were gradual. In a detailed analysis of one event we now find that approximately half of the CO₂ increase that occurred during...
Resource Type:: Article
Full Text:: Andreas Schmittner,2 and Karl Kreutz3 Received 6 July 2012; revised 21 August 2012; accepted 23 August

Biological production in the NE Pacific and its influence on air-sea CO2 flux: Evidence from dissolved oxygen isotopes and O2/Ar

Creator:: Juranek, L. W., Quay, P. D., Feely, R. A., Lockwood, D., Karl, D. M., and Church, M. J.
Abstract:: We determine rates of gross photosynthetic O₂ production (GOP) and net community O₂ production (NCP) using the triple oxygen isotope and O₂/Ar approach on two spring and two late summer meridional transects of the NE Pacific. Observed GOP and NCP in the subtropical (89 ± 9 and 8.3 ± 1.3...
Resource Type:: Article
Full Text:: . Juranek,1,2,3 P. D. Quay,4 R. A. Feely,2 D. Lockwood,4 D. M. Karl,5 and M. J. Church5 Received 13 July

Paired windward and leeward biogeochemical time series reveal consistent surface ocean CO₂ trends across the Hawaiian Ridge

Creator:: Dore, John E., Church, Matthew J., Karl, David M., Sadler, Daniel W., and Letelier, Ricardo M.
Abstract:: Sustained time series have provided compelling evidence for progressive acidification of the surface oceans through exchange with the growing atmospheric reservoir of carbon dioxide. However, few long-term programs exist, and extrapolation of results from one site to larger oceanic expanses is hampered by the lack of spatial coverage inherent to...
Resource Type:: Article

The effect of river discharge and wind forcing on the Oregon coastal ocean during fall and winter

Creator:: Mazzini, Piero Luigi Fernandes
Abstract:: Freshwater provided from river discharge influences the dynamics and circulation of most continental shelves around the world. It has profound effects on the transport and fate of materials and substances originated from rivers and estuaries, as well as on the ocean biogeochemistry and marine ecosystems. The effect of buoyancy forcing...
Resource Type:: Dissertation
Full Text:: Abstract approved: John A. Barth Freshwater provided from river discharge influences the dynamics and

Restoring the Columbia River Estuary : Chinook Salmon Recovery and Invasive Species Management

Creator:: Klopfenstein, Rachael
Abstract:: As highlighted in this study, shallow-water habitats and the prey they provide are important for juvenile salmon in the Columbia River estuary, but the spread of invasive species and large-scale changes to the estuary influence how these habitats are utilized. Reed canarygrass (Phalaris arundinacea) (“PHAR” hereafter) is a highly invasive...
Resource Type:: Masters Thesis
Full Text:: , Charles A. Simenstad, Susan Hinton, Regan McNatt, Tom Friesen, Luke Whitman, Eric Bailey, Sara Aiken

Biotic and Human Vulnerability to Projected Changes in Ocean Biogeochemistry over the 21st Century

Creator:: Mora, Camilo, Wei, Chih-Lin, Rollo, Audrey, Amaro, Teresa, Baco, Amy R., Billett, David, Bopp, Laurent, Chen, Qi, Collier, Mark, Danovaro, Roberto, Gooday, Andrew J., Grupe, Benjamin M., Halloran, Paul R., Ingels, Jeroen, Jones, Daniel O. B., Levin, Lisa A., Nakano, Hideyuki, Norling, Karl, Ramirez-Llodra, Eva, Rex, Michael, Ruhl, Henry A., Smith, Craig R., Sweetman, Andrew K., Thurber, Andrew R., Tjiputra, Jerry F., Usseglio, Paolo, Watling, Les, Wu, Tongwen, and Yasuhara, Moriaki
Abstract:: Ongoing greenhouse gas emissions can modify climate processes and induce shifts in ocean temperature, pH, oxygen concentration, and productivity, which in turn could alter biological and social systems. Here, we provide a synoptic global assessment of the simultaneous changes in future ocean biogeochemical variables over marine biota and their broader...
Resource Type:: Article

Optimizing map projection selection for world maps and web maps

Creator:: Šavrič, Bojan
Abstract:: The selection process for map projections is a mystery to many mapmakers and GIS users. Map projections ought to be selected based on the map’s geographic extent and the required distortion properties, with the goal of minimizing the distortion of the mapped area. Despite some available selection guidelines, the selection...
Resource Type:: Dissertation
Full Text:: The selection process for map projections is a mystery to many

Simulating extreme total water levels using a time-dependent, extreme value approach

Creator:: Serafin, Katherine A.
Abstract:: Coastal flood hazard zones and the design of coastal defenses are often devised using either the maximum recorded total water level (TWL) or a 'design' event such as the 100-year return-level flood, usually projected from observed extreme events. Despite technological advances driving more consistent instrumental records of wave heights and...
Resource Type:: Masters Thesis
Full Text:: Simulating Extreme Total Water Levels using a Time-dependent

Understanding Signals of the South Pole Ice Core: Chronology, Climate, and Firn Processes

Creator:: Epifanio, Jenna A.
Abstract:: The South Pole ice core (SPC14), drilled in the field seasons of 2014/2015 and 2015/2016, is an intermediate length, 1,751-m ice core which preserves a 54,000-year record of past climate and atmospheric composition. The SPC14 ice core adds to the spatial grid of ice cores in Antarctica extending into the...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Jenna A

Stable Isotope Constraints on Carbon Dioxide and Nitrous Oxide Variations at the Onset of the Last Glacial Period: New Ice Cores from Taylor Glacier, Antarctica

Creator:: Menking, James A.
Abstract:: New ice cores retrieved from the Taylor Glacier (Antarctica) blue ice area contain ice and air spanning the Marine Isotope Stage (MIS) 5/4 transition, a period of global cooling and ice sheet expansion. Chronologies were determined for the ice and air bubbles in the new ice cores by visually matching...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF James A. Menking for the degree of Doctor of Philosophy in

ScholarsArchive@OSU

Abrupt change in atmospheric CO₂ during the last ice age

Biological production in the NE Pacific and its influence on air-sea CO2 flux: Evidence from dissolved oxygen isotopes and O2/Ar

Paired windward and leeward biogeochemical time series reveal consistent surface ocean CO₂ trends across the Hawaiian Ridge

The effect of river discharge and wind forcing on the Oregon coastal ocean during fall and winter

Restoring the Columbia River Estuary : Chinook Salmon Recovery and Invasive Species Management

Biotic and Human Vulnerability to Projected Changes in Ocean Biogeochemistry over the 21st Century

Optimizing map projection selection for world maps and web maps

Simulating extreme total water levels using a time-dependent, extreme value approach

Understanding Signals of the South Pole Ice Core: Chronology, Climate, and Firn Processes

Stable Isotope Constraints on Carbon Dioxide and Nitrous Oxide Variations at the Onset of the Last Glacial Period: New Ice Cores from Taylor Glacier, Antarctica

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