Index Catalog // ScholarsArchive@OSU

Creator:: Matheson, Mark A., Coakley, James A., and Tahnk, William R.
Abstract:: Empirical estimates of the aerosol indirect radiative forcing often rely on threshold cloud retrievals applied to multispectral satellite imagery data. In such retrievals, pixels having radiances that surpass prescribed thresholds are assumed to be overcast even if they are only partially cloud covered. This assumption leads to cloud visible optical...
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Full Text:: aerosol indirect radiative forcing Mark A. Matheson,1,2 James A. Coakley Jr.,1 and William R. Tahnk1

Creator:: Goni, Miguel A., Thunell, Robert C., Woodwort, Mark P., and Müller-Karger, Frank E.
Abstract:: Analysis of sediments from two wind-driven upwelling systems, Guaymas and Cariaco basins, using the alkenonebased U_37^(K^' ) paleothermometer yielded high-resolution records of sea surface temperatures (SST) from 1700 to 2000 AD. The trends in the U K'/37 index reveal steady SST increases of 1 to 2°C at both sites since...
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Full Text:: last three centuries: Interocean teleconnections Miguel A. Goni,1 Robert C. Thunell,2 Mark P

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 ×...
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Full Text:: , USA Mark D. Kurz and Joshua Curtice Department of Marine Chemistry and Geochemistry, Woods Hole

Creator:: Pierce, Stephen D., Barth, John A., Thomas, Rebecca E., and Fleischer, Guy W.
Abstract:: In the northern California Current, the onset of the 2005 upwelling season was five weeks later than usual, and well established upwelling with a cold surface signature did not occur until about seven weeks after this. As part of the joint US-Canada Pacific hake survey, from 14–16 July 2005 we...
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Full Text:: . (b) Spring transition dates for all years (1967–2005). Dots mark years where a July NH line is

Creator:: Castelao, Renato M., Barth, John A., and Mavor, Timothy P.
Abstract:: Data from Geostationary Operational Environmental Satellites are used to study the seasonal evolution of temperature fronts in the northern California Current System (CCS), focusing on the interactions with topographic features. Fronts first appear close to the coast in response to upwelling winds, moving offshore with the continuous input of energy...
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Full Text:: California Current System observed from geostationary satellite data Renato M. Castelao,1,2 John A. Barth

Creator:: Woodgate, Rebecca A., Aagaard, Knut, Swift, James H., Falkner, Kelly, and Smethie, William M.
Abstract:: Pacific winter waters, a major source of nutrients and buoyancy to the Arctic Ocean, are thought to ventilate the Arctic's lower halocline either by injection (isopycnal or penetrative) of cold saline shelf waters, or by cooling and freshening Atlantic waters upwelled onto the shelf. Although ventilation at salinity (S) >...
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Full Text:: halocline by upwelling and diapycnal mixing over the continental margin Rebecca A. Woodgate,1 Knut Aagaard

Creator:: Selker, John, van de Giesen, Nick, Westhoff, Martijn, Luxemburg, Wim, and Parlange, Marc B.
Abstract:: A new approach to monitoring surface waters using distributed fiber optic temperature sensing is presented, allowing resolutions of temperature of 0.01°C every meter along a fiber optic cable of up to 10,000 m in length. We illustrate the potential of this approach by quantifying both stream temperature dynamics and groundwater...
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Full Text:: November 2006; published 19 December 2006. [1] A new approach to monitoring surface waters using

Creator:: Morison, J., Steele, M., Kikuchi, T., Falkner, Kelly, and Smethie, W.
Abstract:: Upper ocean hydrography in the central Arctic Ocean has relaxed since 2000 to near-climatological conditions that pertained before the dramatic changes of the 1990s. The behavior of the anomalies of temperature and salinity in the central Arctic Ocean follow a first-order linear response to the AO with time constant of...
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Full Text:: salinity in the central Arctic Ocean follow a first-order linear response to the AO with time constant of 5

Creator:: Harris, Robert N. and Wang, Kelin
Abstract:: We present thermal models of the 24 Ma Cocos plate subducting under the Caribbean plate at the Nicoya Peninsula, Costa Rica. Our modeling incorporates the effect of hydrothermal cooling of the seafloor and the absence of an accretionary prism. Initial geotherms of the incoming plate, representing different effective cooling depths...
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Full Text:: the main subduction thrust. Excluding the deforming prism results in a higher heat flow immediately

Creator:: Nash, Jonathan, Alford, M. H., Kunze, E., Martini, K., and Kelly, S.
Abstract:: Two deep ocean hotspots of turbulent mixing were found over the Oregon continental slope. Thorpe-scale analyses indicate time-averaged turbulent energy dissipation rates of ε > 10⁻⁷ W/kg and eddy diffusivities of Kp ~ 10⁻² m²/s at both hotspots. However, the structure of turbulence and its generation mechanism at each site...
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Full Text:: stratified fluid several hundred meters above the bottom. Turbulence shows a clear 12.4-h periodicity

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