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:: last ice age Abrupt change in atmospheric CO2 during the last ice age Jinho Ahn,1 Edward J. Brook,2

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

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

Interpreting Climate of the Past from High-Resolution Ice Core Records of Methane

Creator:: Lee, James E.
Abstract:: Methane is a product of biogeochemical processes which respond to changes in climate. The history of atmospheric methane is recorded by ice cores providing insight into past changes in these biogeochemical processes. This dissertation is comprised of three studies which focus on centennial- and millenial-scale variability of methane from ice...
Resource Type:: Dissertation
Full Text:: approved: Edward J. Brook Methane is a product of biogeochemical processes which respond to changes in

Examining the Effects of Artisanal, Small-scale Gold Mining on Livelihood Assets in Kedougou, Senegal

Creator:: Zoch, Grant L.
Abstract:: The frontlines of climate change adaptation will occur in rural, impoverished regions of the world where households engage in climatically dependent livelihoods, such as peasant agriculture or pastoralism. As changing climate and changing markets affect the suite of household livelihood assets (environmental, social, and economic) which enable a household to...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: ____________________________________________________________ David J

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:: Erich C. Osterberg7, Tyler J. Fudge3, Murat Aydin8, Ekaterina Hood9, Michael Kalk7, Karl J. Kreutz5, 6

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:: : ______________________________________________________ Edward J. Brook New ice cores retrieved from the Taylor Glacier (Antarctica) blue ice

Invisibility: Environmental Migration Governance in a Changing Climate

Creator:: Abel, Kali M.
Abstract:: Climate change has the potential to accelerate many forms of human migration and mobility, yet almost all of the key migration outcomes of interest are determined predominantly by governance, or the norms, laws, and institutions involved in the coordination of human society. These outcomes include the decision whether or not...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ David J. Wrathall Climate change has the potential to accelerate many forms of human

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

The geology, geochronology, and geochemistry of the Kaskanak Batholith, and other late Cretaceous to Eocene magmatism at the Pebble porphyry Cu-Au-Mo deposit, SW Alaska

Creator:: Olson, Nansen H.
Abstract:: The Pebble porphyry Cu-Au-Mo deposit in Alaska is one of the world's largest Cu-Au mineral resources. Late Cretaceous magmatic evolution in the Pebble district culminated with the intrusion of the Kaskanak Batholith and associated porphyry copper-gold-molybdenum mineralization. The Kaskanak Batholith is a multiphase granodiorite intrusion with an estimated footprint of...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Abrupt change in atmospheric CO₂ during the last ice age

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

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

Interpreting Climate of the Past from High-Resolution Ice Core Records of Methane

Examining the Effects of Artisanal, Small-scale Gold Mining on Livelihood Assets in Kedougou, Senegal

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

Invisibility: Environmental Migration Governance in a Changing Climate

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

The geology, geochronology, and geochemistry of the Kaskanak Batholith, and other late Cretaceous to Eocene magmatism at the Pebble porphyry Cu-Au-Mo deposit, SW Alaska

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