Index Catalog // ScholarsArchive@OSU

Unbalanced particle flux budgets in Crater Lake, Oregon: Implications for edge effects and sediment focusing in lakes

Creator:: Dymond, Jack, Collier, Robert W., McManus, James, and Larson, Gary L.
Abstract:: Flux estimates show that upward mixing of the deep-water nitrate pool accounts for more than 85% of the total new nitrogen input to the euphotic zone of Crater Lake. Because measured primary productivity (360 mg C m-2 d-1) is 10–30 times higher than a level supported solely by the input...
Resource Type:: Article

Turbulence Decay and Restratification in the Equatorial Ocean Surface Layer following Nighttime Convection

Creator:: Caldwell, D. R., Lien, R-C., Moum, J. N., and Gregg, M. C.
Abstract:: Although the process of restratification of the ocean surface layer at the equator following nighttime convection is similar in many ways to the process at midlatitudes, there are important differences. A composite day calculated from 15 days of consistent conditions at 140°W on the equator was compared with midlatitude observations...
Resource Type:: Article

Tidal and atmospheric forcing of the upper ocean in the Gulf of California, Part 2: Surface heat flux

Creator:: Paden, Cynthia A., Winant, Clinton D., and Abbott, Mark R.
Abstract:: Satellite infrared imagery and coastal meteorological data for March 1984 through February 1985 are used to estimate the net annual surface heat flux for the northern Gulf of California. The average annual surface heat flux for the area north of Guaymas and Santa Rosalia is estimated to be +74 W...
Resource Type:: Article

The Vertical Structure of Linear Coastal-Trapped Disturbances

Creator:: Samelson, R. M.
Abstract:: The vertical structure of coastal-trapped disturbances in several idealized models of a stably stratified lower atmosphere is examined. The vertical structure and phase speeds of the trapped modes depend on the resting stratification and the height of the orographic step. The presence of a stable layer above the boundary layer...
Resource Type:: Article

The sea state bias in altimeter estimates of sea level from collinear analysis of TOPEX data

Creator:: Chelton, Dudley B.
Abstract:: The wind speed and significant wave height (H1/3) dependencies of the sea state is in altimeter estimates of sea level, expressed in the form ∆hSSB=bH1/3, are examined from least squares analysis of 21 cycles of collinear TOPEX data. The bias coefficient b is found to increase in magnitude with increasing...
Resource Type:: Article

The role of dissolved organic matter release in the productivity of the oligotrophic North Pacific Ocean

Creator:: Karl, David M., Hebel, Dale V., Björkman, K., and Letelier, Ricardo M.
Abstract:: Based on a long-term set of observations and measurements at a station in the subtropical North Pacific Ocean, it now appears that contemporaneous rates of primary production in low-nutrient open ocean regions and perhaps in the ocean as a whole may be greater than had been considered in field studies...
Resource Type:: Article

The Martian Zonal-Mean Circulation: Angular Momentum and Potential Vorticity Structure in GCM Simulations

Creator:: Barnes, Jeffrey R. and Haberle, Robert M.
Abstract:: Analysis of simulations performed with the NASA/Ames Mars GCM shows that under dusty conditions the Northern Hemisphere winter solstice circulation becomes characterized by a zonally averaged state in which the potential vorticity at upper levels is very small outside of high latitudes. The available observational data-in particular the 15-µm observations...
Resource Type:: Article

The large-scale summer circulation of the California Current

Creator:: Strub, P. Ted and James, Corinne
Abstract:: Satellite data from the Geosat altimeter and the Advanced Very High Resolution Radiometer (AVHRR) are used to show the large-scale structure of the surface circulation of the California Current System in summer. These data show the connection between an equatorward jet and temperature front off Oregon that lies within 100...
Resource Type:: Article

Subgrid Surface Fluxes in Fair Weather Conditions during TOGA COARE: Observational Estimates and Parameterization

Creator:: Vickers, Dean and Esbensen, Steven K.
Abstract:: Bulk aerodynamic formulas are applied to meteorological data from low-altitude aircraft flights to observational estimates of the subgrid enhancement of momentum, sensible heat, and latent heat the atmospheric–oceanic boundary in light wind, fair weather conditions during TOGA COARE Global Atmosphere Coupled Ocean–Atmosphere Response Experiment). Here, subgrid enhancement the contributions of...
Resource Type:: Article

Storage lipids of the copepod Calanus finmarchicus from Georges Bank and the Gulf of Maine

Creator:: Miller, Charles B., Morgan, Cheryl A., Prahl, Fredrick, and Sparrow, Margaret A.
Abstract:: Storage lipids of fifth copepodites (C5) of Culanus finmarchicus from Georges Bank and the Gulf of Maine were quantified from video images and by Iatroscan (thin-layer chromatography with flame-ionization detection, FID). Oil withdrawn from the oil sac by micropipette was pure wax ester (WE); triacylglycerols (TAG) were elsewhere in the...
Resource Type:: Article

Spatial and temporal distribution of dissolved oxygen in Crater Lake, Oregon

Creator:: McManus, James, Collier, Robert W., Dymond, Jack, Wheat, C. Geoffrey, and Larson, Gary L.
Abstract:: Small temporal and spatial variations in the distribution of dissolved oxygen in Crater Lake, Oregon, are used to estimate the mean age of the lake’s deep water, the flux of labile organic carbon to the deep lake, and the influence of hydrothermal activity on the concentration of dissolved oxygen within...
Resource Type:: Article

Secondary circulation associated with a shelfbreak front

Creator:: Barth, John A., Bogucki, Darek, Pierce, Stephen D., and Kosro, P. Michael, 1951-
Abstract:: Evidence for secondary circulation associated with a shelfbreak front is obtained from a high‐resolution, cross‐shelf section of hydrographic, optical and velocity fields. Convergence in the bottom boundary layer on the inshore side of the front and subsequent upwelling into the interior is evident by a mid‐water region of suspended bottom...
Resource Type:: Article

Scatterometer Beam Balancing Using Open-Ocean Backscatter Measurements

Creator:: Freilich, Michael H., Qi, Hongbo, and Dunbar, R. Scott
Abstract:: Calculation of vector winds from spaceborne fan-beam scatterometers requires that backscatter measurements from different antennas be relatively calibrated to high accuracy. A method is developed to perform postlaunch antenna calibration using global mean ocean backscatter measurements in conjunction with estimates of the statistical distribution of near-surface wind velocity and the...
Resource Type:: Article

Scales of variability of bio-optical properties as observed from near-surface drifters

Creator:: Abbott, Mark R., Brink, Kenneth H., Booth, C. R., Blasco, Dolors, Swenson, Mark S., Davis, Curtiss O., and Codispoti, L. A.
Abstract:: A drifter equipped with bio-optical sensors and an automated water sampler was deployed in the California Current as part of the coastal transition zone program to study the biological, chemical, and physical dynamics of the meandering filaments. During deployments in 1987 and 1988, measurements were made of fluorescence, downwelling irradiance,...
Resource Type:: Article

Rocky intertidal oceanography: an association between community structure and nearshore phytoplankton concentration

Creator:: Menge, Bruce A., Daley, Bryon A., Wheeler, Patricia A., and Strub, P. Ted
Abstract:: On Oregon coastal rocky shores, filter‐feeders were relatively abundant and macrophytes were relatively scarce at Strawberry Hill, whereas opposite abundance patterns occurred at Boiler Bay. To determine whether nearshore oceanographic differences were associated with these patterns, we made shore‐based measurements of nutrient and Chl a concentrations. We used a three‐level...
Resource Type:: Article

Reply to the note by Chavez et al.

Creator:: Dickson, Mary-Lynn and Wheeler, Patricia A.
Resource Type:: Article

Release and consumption of DMSP from Emiliania huxleyi during grazing by Oxyrrhis marina

Creator:: Wolfe, Gordon V., Sherr, Evelyn, and Sherr, Barry F.
Abstract:: Degradation and release to solution of intracellular dimethylsulfoniopropionate (DMSP) from Emiliania huxleyi 370 was observed during grazing by the heterotrophic dinoflagellate Oxyrrhis marina in 24 h bottle incubations. Between 30 and 70 % of the lost algal DMSP was metabolized by the grazers without production of dimethylsulfide (DMS) when grazer...
Resource Type:: Article

Quality Control and Flux Sampling Problems for Tower and Aircraft Data

Creator:: Vickers, Dean and Mahrt, L.
Abstract:: A series of automated tests is developed for tower and aircraft time series to identify instrumentation problems, flux sampling problems, and physically plausible but unusual situations. The automated procedures serve as a safety net for quality controlling data. A number of special flags are developed representing a variety of potential...
Resource Type:: Article

Precise dating of the Holmatindur cooling event in eastern Iceland: Evidence for mid-Miocene bipolar glaciation

Creator:: Duncan, Robert A. and Helgason, J.
Abstract:: A succession of basaltic lavas, volcaniclastic sediments, and lignite beds in the Holmatindur region of eastern Iceland provides the means for tying magnetic reversal stratigraphy and a record of major North Atlantic cooling to a precise radiometric timescale. A prominent part of the section is the Holmatindur classic bed, which...
Resource Type:: Article

Observations of a deep-mixing event in Crater Lake, Oregon

Creator:: Crawford, G. B. and Collier, Robert W.
Abstract:: We present observations of the evolution of a deep-mixing event in a deep, temperate lake. The observations were obtained from thermistors mounted on a long-term mooring in the lake. The event seems to have originated near 150-m depth and resulted in a plume or layer of cold water from the...
Resource Type:: Article

ScholarsArchive@OSU

Unbalanced particle flux budgets in Crater Lake, Oregon: Implications for edge effects and sediment focusing in lakes

Turbulence Decay and Restratification in the Equatorial Ocean Surface Layer following Nighttime Convection

Tidal and atmospheric forcing of the upper ocean in the Gulf of California, Part 2: Surface heat flux

The Vertical Structure of Linear Coastal-Trapped Disturbances

The sea state bias in altimeter estimates of sea level from collinear analysis of TOPEX data

The role of dissolved organic matter release in the productivity of the oligotrophic North Pacific Ocean

The Martian Zonal-Mean Circulation: Angular Momentum and Potential Vorticity Structure in GCM Simulations

The large-scale summer circulation of the California Current

Subgrid Surface Fluxes in Fair Weather Conditions during TOGA COARE: Observational Estimates and Parameterization

Storage lipids of the copepod Calanus finmarchicus from Georges Bank and the Gulf of Maine

Spatial and temporal distribution of dissolved oxygen in Crater Lake, Oregon

Secondary circulation associated with a shelfbreak front

Scatterometer Beam Balancing Using Open-Ocean Backscatter Measurements

Scales of variability of bio-optical properties as observed from near-surface drifters

Rocky intertidal oceanography: an association between community structure and nearshore phytoplankton concentration

Reply to the note by Chavez et al.

Release and consumption of DMSP from Emiliania huxleyi during grazing by Oxyrrhis marina

Quality Control and Flux Sampling Problems for Tower and Aircraft Data

Precise dating of the Holmatindur cooling event in eastern Iceland: Evidence for mid-Miocene bipolar glaciation

Observations of a deep-mixing event in Crater Lake, Oregon

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