Index Catalog // ScholarsArchive@OSU

Accretion of interplanetary dust in polar ice

Creator:: Brook, Edward J., Kurz, Mark D., Curtice, Joshua, and Cowburn, Stuart
Abstract:: Measurements of helium isotopes in particles separated from polar ice demonstrate that extraterrestrial ³He dominates the ³He flux at the GISP2 (Greenland) and Vostok (Antarctica) ice core sites. Replicate measurements of late Holocene ice samples yield ³He fluxes of 0.62±0.27×10⁻¹² cm³ STP cm⁻² ka⁻¹ (GISP2) and 0.77 ± 0.25 ×...
Resource Type:: Article
Full Text:: , USA Mark D. Kurz and Joshua Curtice Department of Marine Chemistry and Geochemistry, Woods Hole

Rapid Holocene Deglaciation of the Labrador Sector of the Laurentide Ice Sheet

Creator:: Carlson, Anders E., Clark, Peter U., Raisbeck, Grant M., and Brook, Edward J.
Abstract:: Retreat of the Laurentide Ice Sheet (LIS) following the Last Glacial Maximum 21 000 yr BP affected regional to global climate and accounted for the largest proportion of sea level rise. Although the late Pleistocene LIS retreat chronology is relatively well constrained, its Holocene chronology remains poorly dated, limiting our...
Resource Type:: Article
Full Text:: Laurentide Ice Sheet ANDERS E. CARLSON* AND PETER U. CLARK Department of Geosciences, Oregon State

Modes of Global Climate Variability during Marine Isotope Stage 3 (60–26 ka)

Creator:: Pisias, Nicklas G., Clark, Peter U., and Brook, Edward J.
Abstract:: Recent analysis of 38 globally distributed paleoclimatic records covering Marine Isotope Stage 3 (MIS 3) 60–26 ka demonstrated that the two leading empirical orthogonal functions (EOFs) explaining the data are the Greenland ice-core signal (“northern” signal) and the Antarctic ice-core signal (“southern” signal). Here singular spectral analysis (SSA) is used...
Resource Type:: Article
Full Text:: analysis of a set of 38 published proxy records that significantly expand the global coverage (Clark et

Geochemical proxies of North American freshwater routing during the Younger Dryas cold event

Creator:: Carlson, Anders E., Clark, Peter U., Haley, Brian A., Klinkhammer, Gary P., Simmons, Kathleen, Brook, Edward J., and Meissner, Katrin J.
Abstract:: The Younger Dryas cold interval represents a time when much of the Northern Hemisphere cooled from ≈12.9 to 11.5 kiloyears B.P. The cause of this event, which has long been viewed as the canonical example of abrupt climate change, was initially attributed to the routing of freshwater to the St....
Resource Type:: Article
Full Text:: during the Younger Dryas cold event Anders E. Carlson*†, Peter U. Clark*, Brian A. Haley‡, Gary P

Precise interpolar phasing of abrupt climate change during the last ice age

Creator:: Buizert, Christo, Adrian, Betty, Ahn, Jinho, Albert, Mary, Alley, Richard B., Baggenstos, Daniel, Bauska, Thomas K., Bay, Ryan C., Bencivengo, Brian B., Bentley, Charles R., Brook, Edward J., Chellman, Nathan J., Clow, Gary D., Cole-Dai, Jihong, Conway, Howard, Cravens, Eric, Cuffey, Kurt M., Dunbar, Nelia W., Edwards, Jon S., Fegyveresi, John M., Ferris, Dave G., Fitzpatrick, Joan J., Fudge, T. J., Gibson, Chris J., Gkinis, Vasileios, Goetz, Joshua J., Gregory, Stephanie, Hargreaves, Geoffrey M., Iverson, Nels, Johnson, Jay A., Jones, Tyler R., Kalk, Michael L., Kippenhan, Matthew J., Koffman, Bess G., Kreutz, Karl, Kuhl, Tanner W., Lebar, Donald A., Lee, James E., Marcott, Shaun A., Markle, Bradley R., Maselli, Olivia J., McConnell, Joseph R., McGwire, Kenneth C., Mitchell, Logan E., Mortensen, Nicolai B., Neff, Peter D., Nishiizumi, Kunihiko, Nunn, Richard M., Orsi, Anais J., Pasteris, Daniel R., Pedro, Joel B., Pettit, Erin C., Price, P. Buford, Priscu, John C., Rhodes, Rachael H., Rosen, Julia L., Schauer, Andrew J., Schoenemann, Spruce W., Sendelbach, Paul J., Severinghaus, Jeffrey P., Shturmakov, Alexander J., Sigl, Michael, Slawny, Kristina R., Souney, Joseph M., Sowers, Todd A., Spencer, Matthew K., Steig, Eric J., Taylor, Kendrick C., Twickler, Mark S., Vaughn, Bruce H., Voigt, Donald E., Waddington, Edwin D., Welten, Kees C., Wendricks, Anthony W., White, James W. C., Winstrup, Mai, Wong, Gifford J., and Woodruff, Thomas E.
Abstract:: The last glacial period exhibited abrupt Dansgaard–Oeschger climatic oscillations, evidence of which is preserved in a variety of Northern Hemisphere palaeoclimate archives¹. Ice cores show that Antarctica cooled during the warm phases of the Greenland Dansgaard–Oeschger cycle and vice versa[superscript 2,3], suggesting an interhemispheric redistribution of heat through a mechanism...
Resource Type:: Article
Full Text:: . Petersen, S. V., Schrag, D. P. & Clark, P. U. A new mechanism for Dansgaard– Oeschger cycles

Global climate evolution during the last deglaciation

Creator:: Clark, Peter U., Shakun, Jeremy D., Baker, Paul A., Bartlein, Patrick J., Brewer, Simon, Brook, Edward J., Carlson, Anders E., Cheng, Hai, Kaufman, Darrell S., Liu, Zhengyu, Marchitto, Thomas M., Mix, Alan C., Morrill, Carrie, Otto-Bliesner, Bette L., Pahnke, Katharina, Russell, James M., Whitlock, Cathy, Adkins, Jess F., Blois, Jessica L., Clark, Jorie, Colman, Steven M., Curry, William B., Flower, Ben P., He, Feng, Johnson, Thomas C., Lynch-Stieglitz, Jean, Markgraf, Vera, McManus, Jerry, Mitrovica, Jerry X., Moreno, Patricio I., and Williams, John W.
Abstract:: Deciphering the evolution of global climate from the end of the Last Glacial Maximum approximately 19 ka to the early Holocene 11 ka presents an outstanding opportunity for understanding the transient response of Earth's climate system to external and internal forcings. During this interval of global warming, the decay of...
Resource Type:: Article
Full Text:: ). Abbreviations are as in Fig. 2. Clark et al. PNAS ∣ May 8, 2012 ∣ vol. 109 ∣ no. 19 ∣ E1139 EA RT H ,A TM O

Dating the Siple Dome (Antarctica) ice core by manual and computer interpretation of annual layering

Creator:: Taylor, Kendrick C., Alley, Richard B., Meese, Debra A., Spencer, Matthew K., Brook, Edward J., Dunbar, Nelia W., Finkel, Robert C., Gow, Anthony J., Kurbatov, Andrei V., Lamorey, Gregg W., Mayewski, Paul A., Meyerson, Eric A., Nishiizumi, Kunihiko, and Zielinski, Gregory A.
Abstract:: The Holocene portion of the Siple Dome (Antarctica) ice core was dated by interpreting the electrical, visual and chemical properties of the were interpreted manually and with a computer algorithm.The algorithm was adjusted to be consistent with atmospheric methane stratigraphic (Greenland Ice Sheet Project 2) ice core, ¹⁰Be stratigraphic ties...
Resource Type:: Article
Full Text:: ), 255^260. Alley, R. B., P. A. Mayewski, T. Sowers, M. Stuiver, K. C. Taylor and P.U. Clark. 1997a

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:: . References Alley, R. B., Mayewski, P. A., Sowers, T., Stuiver, M., Taylor, K. C., & Clark, P. U. (1997

Instruments and Methods: A novel method for obtaining very large ancient air samples from ablating glacial ice for analyses of methane radiocarbon

Creator:: Petrenko, Vasilii V., Severinghaus, Jeffrey P., Brook, Edward J., Muhle, Jens, Headly, Melissa, Harth, Christina M., Schaefer, Hinrich, Reeh, Niels, Weiss, Ray F., Lowe, Dave, and Smith, Andrew M.
Abstract:: We present techniques for obtaining large (∼100 L STP) samples of ancient air for analysis of ¹⁴C of methane (¹⁴CH₄) and other trace constituents. Paleoatmospheric ¹⁴CH₄ measurements should constrain the fossil fraction of past methane budgets, as well as provide a definitive test of methane clathrate involvement in large and...
Resource Type:: Article
Full Text:: Instruments and Methods A novel method for obtaining very large

Greenland Temperature Response to Climate Forcing during the Last Deglaciation

Creator:: Buizert, Christo, Gkinis, Vasileios, Severinghaus, Jeffrey P., He, Feng, Lecavalier, Benoit S., Kindler, Philippe, Leuenberger, Markus, Carlson, Anders E., Vinther, Bo, Masson-Delmotte, Valerie, White, James W. C., Liu, Zhengyu, Otto-Bliesner, Bette, and Brook, Edward J.
Abstract:: Greenland ice core water isotopic composition (δ¹⁸O) provides detailed evidence for abrupt climate changes, but is by itself insufficient for quantitative reconstruction of past temperatures and their spatial patterns. We investigate Greenland temperature evolution during the last deglaciation using independent reconstructions from three ice cores and simulations with a coupled...
Resource Type:: Article
Full Text:: ). 15. A. E. Carlson, P. U. Clark, Ice sheet sources of sea level rise and freshwater discharge during

ScholarsArchive@OSU

Accretion of interplanetary dust in polar ice

Rapid Holocene Deglaciation of the Labrador Sector of the Laurentide Ice Sheet

Modes of Global Climate Variability during Marine Isotope Stage 3 (60–26 ka)

Geochemical proxies of North American freshwater routing during the Younger Dryas cold event

Precise interpolar phasing of abrupt climate change during the last ice age

Global climate evolution during the last deglaciation

Dating the Siple Dome (Antarctica) ice core by manual and computer interpretation of annual layering

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

Instruments and Methods: A novel method for obtaining very large ancient air samples from ablating glacial ice for analyses of methane radiocarbon

Greenland Temperature Response to Climate Forcing during the Last Deglaciation

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