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Browsing Faculty Research Publications (College of Earth, Ocean, and Atmospheric Sciences) by Title

Browsing Faculty Research Publications (College of Earth, Ocean, and Atmospheric Sciences) by Title

Now showing items 4-23 of 1874

Abrupt change in atmospheric CO₂ during the last ice age

Ahn, Jinho; Brook, Edward J.; Schmittner, Andreas; Kreutz, Karl (American Geophysical Union, 2012-09-28)

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 an ...
Abrupt changes in atmospheric methane at the MIS 5b–5a transition

Grachev, Alexi M.; Brook, Edward J.; Severinghaus, Jeffrey P. (American Geophysical Union, 2007)

New ice core analyses show that the prominent rise in atmospheric methane concentration at Dansgaard-Oeschger event 21 was interrupted by a century-long 20% decline, which was previously unrecognized. The reversal was fo ...
Abrupt thermal transition reveals hydrothermal boundary and role of seamounts within the Cocos Plate

Fisher, A. T.; Stein, C. A.; Harris, Robert N.; Wang, K.; Silver, E. A.; Pfender, M.; Hutnak, M.; Cherkaoui, A.; Bodzin, R.; Villinger, H. (American Geophysical Union, 2003)

New thermal data from 18–24 Ma lithosphere on the Cocos Plate delineate contrasting subsurface thermal conditions in adjacent sections of crust. Heat flow through seafloor created at the East Pacific Rise is generally ...
Abrupt Transition to Strong Superrotation in an Axisymmetric Model of the Upper Troposphere

Shell, Karen M.; Held, Isaac M. (American Meteorological Society, 2004-12)

Abrupt transitions to strongly superrotating states have been found in some idealized models of the troposphere. These transitions are thought to be caused by feedbacks between the eddy momentum flux convergence in low l ...
Absolute humidity and the seasonal onset of influenza in the continental United States

Shaman, Jeffrey; Pitzer, Virginia E.; Viboud, Cecile; Grenfell, Bryan T.; Lipsitch, Marc (PLoS, 2010-02-23)

Much of the observed wintertime increase of mortality in temperate regions is attributed to seasonal influenza. A recent reanalysis of laboratory experiments indicates that absolute humidity strongly modulates the airbo ...
Absolute humidity modulates influenza survival, transmission, and seasonality

Shaman, Jeffrey; Kohn, Melvin (The National Academy of Sciences of the USA, 2009-03-03)

Influenza A incidence peaks during winter in temperate regions. The basis for this pronounced seasonality is not understood, nor is it well documented how influenza A transmission principally occurs. Previous studies ind ...
Absorption and attenuation of visible and near-infrared light in water: dependence on temperature and salinity

Pegau, W. Scott; Gray, Deric; Zaneveld, J. Ronald V. (Optical Society of America, 1997-08-20)

We have measured the absorption coefficient of pure and salt water at 15 wavelengths in the visible and near-infrared regions of the spectrum using WETLabs nine-wavelength absorption and attenuation meters and a three-wa ...
Abundance and grazing effects of Cyclosalpa bakeri in the subarctic Pacific

Madin, L. P.; Purcell, J. E.; Miller, Charles B. (2010-08-17)

Ecological effects of populations of the salp Cyclosalpa bakeri were studied in late summer of 1984, 1987 and 1988 dunng the Subarctic Pacific Ecosystem Research (SUPER) project at Station P in the northeast Pacific. S ...
Accretion of interplanetary dust in polar ice

Brook, Edward J.; Kurz, Mark D.; Curtice, Joshua; Cowburn, Stuart (American Geophysical Union, 2000-10)

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 o ...
The Accuracies of Crossover and Parallel-Track Estimates of Geostrophic Velocity from TOPEX/Poseidon and Jason Altimeter Data

Schlax, Michael G.; Chelton, Dudley B. (American Meteorological Society, 2003-08)

Mean-squared errors of surface geostrophic velocity estimates from the crossover and parallel-track methods are calculated for altimeters in the Ocean Topography Experiment (TOPEX)/Poseidon and Jason orbits. As part of t ...
The Accuracies of Smoothed Sea Surface Height Fields Constructed from Tandem Satellite Altimeter Datasets

Chelton, Dudley B.; Schlax, Michael G. (American Meteorological Society, 2003-09)

A technique previously developed for assessing the effects of sampling errors on sea surface height (SSH) fields constructed from satellite altimeter data is extended to include measurement errors, thus providing estimat ...
Accuracy assessment of recent ocean tide models

Shum, C. K.; Woodworth, P. L.; Andersen, O. B.; Egbert, Gary D.; Francis, O.; King, C.; Klosko, S. M.; Le Provost, C.; Li, X.; Molines, J-M.; Parke, M. E.; Ray, Richard D.; Schlax, M. G.; Stammer, D.; Tierney, C. C.; Vincent, P.; Wunsch, C. I. (American Geophysical Union, 1997-11-15)

Over 20 global ocean tide models have been developed since 1994, primarily as a consequence of analysis of the precise altimetric measurements from TOPEX/POSEIDON and as a result of parallel developments numerical tidal ...
Achieving operational hydrologic monitoring of mosquitoborne disease

Shaman, Jeffrey; Day, Jonathan F. (Center for Disease Control, 2005-09)

Mosquitoes and mosquitoborne disease transmission are sensitive to hydrologic variability. If local hydrologic conditions can be monitored or modeled at the scales at which these conditions affect the population dynam ...
Acoustic backscattering by Hawaiian lutjanid snappers. I. Target strength and swimbladder characteristics

Benoit-Bird, Kelly J.; Au, Whitlow W. L.; Kelley, Christopher D. (Acoustical Society of America, 2003-11)

The target strengths and swimbladder morphology of six snapper species were investigated using broadband sonar, x rays, and swimbladder casts. Backscatter data were obtained using a frequency-modulated sweep ~60–200 kHz! ...
Acoustic backscattering by Hawaiian lutjanid snappers. II. Broadband temporal and spectral structure

Au, Whitlow W. L.; Benoit-Bird, Kelly J. (Acoustical Society of America, 2003-11)

The characteristics of acoustic echoes from six species of deep-dwelling ~up to 400 m! Hawaiian Lujanid snappers were determined by backscatter measurements at the surface. A broadband linear frequency-modulated signal a ...
Acoustic Doppler current profiler observations during the coastal jet separation project on R/V Wecoma, 17-27 August 1995

Pierce, Stephen D.; Barth, John A.; Smith, Robert L. (Robert Lloyd), 1935-; Oregon State University. College of Oceanic and Atmospheric Sciences (Corvallis, Or. : College of Oceanic and Atmospheric Sciences, Oregon State University, 1997)
Acoustic Doppler current profiler observations during the coastal jet separation project on R/V Wecoma, August 23 to September 2, 1994

Pierce, Stephen D.; Barth, John A.; Smith, Robert L. (Robert Lloyd), 1935-; Oregon State University. College of Oceanic and Atmospheric Sciences (Corvallis, Or. : College of Oceanic and Atmospheric Sciences, Oregon State University, 1996-11)
Acoustic Doppler current profiler observations during the coastal mixing and optics experiment : R/V Endeavor cruises from 14 August to 1 September 1996 and 25 April to 15 May 1997

Pierce, Stephen D.; Barth, John A.; Kosro, P. Michael, 1951- (Corvallis, Or. : College of Oceanic and Atmospheric Sciences, Oregon State University, 1998-12)
Acoustic doppler current profiler observations during the Coastal Ocean Advances in Shelf Transport (COAST) Survey I : R/V Wecoma cruise W0105c, 23 May to 13 June 2001

Pierce, Stephen D.; Barth, John A.; Oregon State University. College of Oceanic and Atmospheric Sciences; Coastal Ocean Advances in Shelf Transport (Project) (Corvallis, Or. : College of Oceanic & Atmospheric Sciences, Oregon State University, 2002)

We present velocity observations from a shipboard acoustic Doppler current profiler (ADCP) on R/V Wecoma during cruise W0105c (23 May to 13 June 2001). The cruise was a component (Survey I) of the Coastal Ocean Advance ...
Acoustic doppler current profiler observations during the Coastal Ocean Advances in Shelf Transport (COAST) Survey II : R/V Wecoma cruise W0108A, 6-25 August 2001

Pierce, Stephen D.; Barth, John A.; Oregon State University. College of Oceanic and Atmospheric Sciences; Coastal Ocean Advances in Shelf Transport (Project) (Corvallis, Or. : College of Oceanic & Atmospheric Sciences, Oregon State University, 2002)

We present velocity observations from a shipboard acoustic Doppler current profiler (ADCP) on R/V Wecoma during cruise W0108a (6-25 August 2001). The cruise was a component (Survey II) of the Coastal Ocean Advances in ...