Index Catalog // ScholarsArchive@OSU

Energy and heat fluxes due to vertically propagating Yanai waves observed in the equatorial Indian Ocean

Creator:: Smyth, W. D., Durland, T. S., and Moum, J. N.
Abstract:: Shipboard current measurements in the equatorial Indian Ocean in October and November of 2011 revealed oscillations in the meridional velocity with amplitude ~0.10 m/s. These were clearest in a layer extending from ~300 to 600 m depth and had periods near 3 weeks. Phase propagation was upward. Measurements from two...
Resource Type:: Article
Full Text:: propagating Yanai waves observed in the equatorial Indian Ocean Smyth, W. D., Durland, T. S., & Moum, J. N

The front on the Northern Flank of Georges Bank in spring : 2. Cross-frontal fluxes and mixing

Creator:: Ullman, David S., Dale, Andrew C., Hebert, Dave, and Barth, John A.
Abstract:: Hydrographic observations made with an undulating vehicle carrying a CTD and concurrent shipboard ADCP velocity observations over a 12‐day period are combined to investigate vertical mixing and cross‐frontal fluxes on the Northern Flank of Georges Bank. The CTD density time series is analyzed to detect the presence of vertical overturns,...
Resource Type:: Article
Full Text:: spring: 2. Cross-frontal fluxes and mixing David S. Ullman,1 Andrew C. Dale,2 Dave Hebert,1 and John A

A new method for estimating the turbulent heat flux at the bottom of the daily mixed layer

Creator:: Imawaki, Shiro, Niiler, Pearn P., Gautier, Catherine H., Halpern, David, Knox, Robert A., Large, William G., Luther, Douglas S., McWilliams, James C., Moum, James N., and Paulson, Clayton A.
Abstract:: A new method is presented for estimating the vertical turbulent heat flux at the bottom of the daily mixed layer from the temperature data in the mixed layer and net solar irradiance data at the sea surface. We assume that fluctuations in the divergence of advective heat flux have longer...
Resource Type:: Article
Full Text:: equation (4), and its components are shown in Figure 8a neglecting about 50 W/m 2 for Qt,rb D. The daily

Particle distributions and dynamics in the euphotic zone of the North Pacific Subtropical Gyre

Creator:: Barone, Benedetto, Bidigare, Robert R., Church, Matthew J., Karl, David M., Letelier, Ricardo M., and White, Angelicque E.
Abstract:: During the summer of 2012, we used laser diffractometry to investigate the temporal and vertical variability of the particle size spectrum (1.25–100 µm in equivalent diameter) in the euphotic zone of the North Pacific Subtropical Gyre. Particles measured with this optical method accounted for ∼40% of the particulate carbon stocks...
Resource Type:: Article
Full Text:: of the North Pacific Subtropical Gyre Barone, B., Bidigare, R. R., Church, M. J., Karl, D. M

Phenology of particle size distributions and primary productivity in the North Pacific subtropical gyre (Station ALOHA)

Creator:: White, Angelicque E., Letelier, Ricardo M., Whitmire, Amanda L., Barone, Benedetto, Bidigare, Robert R., Church, Matthew J., and Karl, David M.
Abstract:: The particle size distribution (PSD) is a critical aspect of the oceanic ecosystem. Local variability in the PSD can be indicative of shifts in microbial community structure and reveal patterns in cell growth and loss. The PSD also plays a central role in particle export by influencing settling speed. Satellite-based...
Resource Type:: Article
Full Text:: ., Letelier, R. M., Whitmire, A. L., Barone, B., Bidigare, R. R., Church, M. J., & Karl, D. M. (2015

Internal hydraulic flows on the continental shelf: High drag states over a small bank

Creator:: Nash, Jonathan D. and Moum, James N.
Abstract:: Observations of currents, hydrography, and turbulence provide unambiguous evidence for hydraulic control of flow over an isolated three-dimensional topographic feature on Oregon’s continental shelf. The flow becomes critical at the crest of the bank, forming a strong supercritical downslope flow in the lower layer. Farther downstream, internal hydraulic jumps form...
Resource Type:: Article
Full Text:: Jonathan D. Nash • and James N. Moum College of Oceanic and Atmospheric Sciences, Oregon State University

An interlaboratory comparison of techniques for extracting and analyzing trapped gases in ice cores

Creator:: Sowers, Todd, Brook, Edward J., Etheridge, David, Blunier, Thomas, Fuchs, Andreas, Leuenberger, Markus, Chappellaz, Jerome, Barnola, Jean Marc, Wahlen, Martin, Deck, Bruce, and Weyhenmeyer, Connie
Abstract:: We undertook an interlaboratory comparison of techniques used to extract and analyze trapped gases in ice cores. The intercomparison included analyses of standard reference gases and samples of ice from the Greenland Ice Sheet Project 2 (GISP2) site. Concentrations of CO₂, CH₄, the δ¹⁸O of O₂, the δ¹⁵N of N₂,...
Resource Type:: Article
Full Text:: trapped gases in ice cores Todd Sowers 1, Ed Brook 2,3, David Etheridge 4, Thomas Blunier 5, Andreas

An assessment of phytoplankton primary productivity in the Arctic Ocean from satellite ocean color/in situ chlorophyll-a based models

Creator:: Lee, Younjoo J., Matrai, Patricia A., Friedrichs, Marjorie A. M., Saba, Vincent S., Antoine, David, Ardyna, Mathieu, Asanuma, Ichio, Babin, Marcel, Bélanger, Simon, Benoît‐Gagné, Maxime, Devred, Emmanuel, Fernández‐Méndez, Mar, Gentili, Bernard, Hirawake, Toru, Kang, Sung‐Ho, Kameda, Takahiko, Katlein, Christian, Lee, Sang H., Lee, Zhongping, Mélin, Frédéric, Scardi, Michele, Smyth, Tim J., Tang, Shilin, Turpie, Kevin R., Waters, Kirk J., and Westberry, Toby K.
Abstract:: We investigated 32 net primary productivity (NPP) models by assessing skills to reproduce integrated NPP in the Arctic Ocean. The models were provided with two sources each of surface chlorophyll-a concentration (chlorophyll), photosynthetically available radiation (PAR), sea surface temperature (SST), and mixed-layer depth (MLD). The models were most sensitive to...
Resource Type:: Article
Full Text:: models Lee, Y. J., Matrai, P. A., Friedrichs, M. A., Saba, V. S., Antoine, D., Ardyna, M

The dynamics of pressure and form drag on a sloping headland: Internal waves versus eddies

Creator:: Warner, Sally J. and MacCready, Parker
Abstract:: Topographically generated eddies and internal waves have traditionally been studied separately even though bathymetry that creates both phenomena is abundant in coastal regions. Here a numerical model is used to understand the dynamics of eddy and wave generation as tidal currents flow past Three Tree Point, a 1 km long,...
Resource Type:: Article
Full Text:: CTy5 1 L ð CTdy; (13) which has units of W m22. Along section 1, which is dominated by internal waves

Effects of stencil width on surface ocean geostrophic velocity and vorticity estimation from gridded satellite altimeter data

Creator:: Arbic, Brian K., Scott, Robert B., Chelton, Dudley B., Richman, James G., and Shriver, Jay F.
Abstract:: This paper examines the effect of “stencil width” on surface ocean geostrophic velocity and vorticity estimated from differentiating gridded satellite altimeter sea surface height products. In oceanographic applications, the value of the first derivative at a central grid point is generally obtained by differencing the sea surface heights at adjacent...
Resource Type:: Article
Full Text:: uncorrelated with w(r + d) at a neighboring point r + d where d ≠ 0. The parameter 0 ≤ f < 1 determines the

ScholarsArchive@OSU

Energy and heat fluxes due to vertically propagating Yanai waves observed in the equatorial Indian Ocean

The front on the Northern Flank of Georges Bank in spring : 2. Cross-frontal fluxes and mixing

A new method for estimating the turbulent heat flux at the bottom of the daily mixed layer

Particle distributions and dynamics in the euphotic zone of the North Pacific Subtropical Gyre

Phenology of particle size distributions and primary productivity in the North Pacific subtropical gyre (Station ALOHA)

Internal hydraulic flows on the continental shelf: High drag states over a small bank

An interlaboratory comparison of techniques for extracting and analyzing trapped gases in ice cores

An assessment of phytoplankton primary productivity in the Arctic Ocean from satellite ocean color/in situ chlorophyll-a based models

The dynamics of pressure and form drag on a sloping headland: Internal waves versus eddies

Effects of stencil width on surface ocean geostrophic velocity and vorticity estimation from gridded satellite altimeter data

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