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Fingered Flow in Two Dimensions 2. Predicting Finger Moisture Profile

Creator:: Selker, J., Parlange, J.-Y., and Steenhuis, T.
Abstract:: An exact integral solution for the moisture profile in growing fingers in sandy soil is derived from Richards' equation. The solution provides moisture content along a finger as a function of position and time and provides applicable results, including the calculation of the asymptotic matric potential of a growing finger...
Resource Type:: Article
Full Text:: + A t ltfø/StOre Profile 0 e e s Fig. !. [;ketch of observed translation during finger growth

The Temporal Response of the Length of a Partially Stratified Estuary to Changes in River Flow and Tidal Amplitude

Creator:: Lerczak, James A., Geyer, W. Rockwell, and Ralston, David K.
Abstract:: The temporal response of the length of a partially mixed estuary to changes in freshwater discharge Q𝒻 and tidal amplitude Uₜ is studied using a 108-day time series collected along the length of the Hudson River estuary in the spring and summer of 2004 and a long-term (13.4 yr) record...
Resource Type:: Article
Full Text:: model, estimated t varied by an order of magnitude from a period of high average discharge (Qo 5 750 m

Turbulent mixing in a strongly forced salt wedge estuary

Creator:: Ralston, David K., Geyer, W. Rockwell, Lerczak, James A., and Scully, Malcolm
Abstract:: Turbulent mixing of salt is examined in a shallow salt wedge estuary with strong fluvial and tidal forcing. A numerical model of the Merrimack River estuary is used to quantify turbulent stress, shear production, and buoyancy flux. Little mixing occurs during flood tides despite strong velocities because bottom boundary layer...
Resource Type:: Article
Full Text:: estuary Turbulent mixing in a strongly forced salt wedge estuary David K. Ralston,1 W. Rockwell Geyer,1

Structure, variability, and salt flux in a strongly forced salt wedge estuary

Creator:: Ralston, David K., Geyer, W. Rockwell, and Lerczak, James A.
Abstract:: The tidally varying circulation, stratification, and salt flux mechanisms are investigated in a shallow salt wedge estuary where fluvial and tidal velocities are large and the steady baroclinic circulation is comparatively weak. The study integrates field observations and numerical simulations of the Merrimack River estuary. At moderate to high discharge...
Resource Type:: Article
Full Text:: , variability, and salt flux in a strongly forced salt wedge estuary David K. Ralston,1 W. Rockwell Geyer,1 and

Subtidal Salinity and Velocity in the Hudson River Estuary: Observations and Modeling

Creator:: Ralston, David K., Geyer, W. Rockwell, and Lerczak, James A.
Abstract:: A tidally and cross-sectionally averaged model based on the temporal evolution of the quasi-steady Hansen and Rattray equations is applied to simulate the salinity distribution and vertical exchange flow along the Hudson River estuary. The model achieves high skill at hindcasting salinity and residual velocity variation during a 110-day period...
Resource Type:: Article
Full Text:: : Observations and Modeling DAVID K. RALSTON, W. ROCKWELL GEYER, AND JAMES A. LERCZAK* Woods Hole Oceanographic

Estuarine Exchange Flow Quantified with Isohaline Coordinates: Contrasting Long and Short Estuaries

Creator:: Chen, Shih-Nan, Geyer, W. Rockwell, Ralston, David K., and Lerczak, James A.
Abstract:: Isohaline coordinate analysis is used to compare the exchange flow in two contrasting estuaries, the long (with respect to tidal excursion) Hudson River and the short Merrimack River, using validated numerical models. The isohaline analysis averages fluxes in salinity space rather than in physical space, yielding the isohaline exchange flow...
Resource Type:: Article
Full Text:: river mouth are highly resolved, MAY 2012 C H E N E T A L . 749 with grid spacing of about 20 m

Lipid/bitumen maturation by hydrothermal activity in sediments of Middle Valley, leg 139

Creator:: Simoneit, Bernd R. T.
Abstract:: The accelerated diagenesis, maturation, and catagenesis of organic matter to hydrothermal petroleum was studied in sediments from Ocean Drilling Program Leg 139 in Middle Valley, northern Juan de Fuca Ridge. Sediments at Sites 855 and 856 have experienced high heat flow resulting in accelerated diagenesis of the immature organic matter...
Resource Type:: Article
Full Text:: origin and contains a significant terrigenous component, as confirmed by the alkane and biomarker

Spatial and temporal variability of late Neogene Equatorial Pacific carbonate : ODP Leg 138

Creator:: Hagelberg, T. K., Pisias, Nicklas G., Mayer, L. A., Shackleton, N. J., and Mix, Alan C.
Abstract:: High resolution, continuous records of GRAPE wet bulk density (a carbonate proxy) from Ocean Drilling Program Leg 138 provide one the opportunity for a detailed study of eastern equatorial Pacific Ocean carbonate sedimentation during the last 6 m.y. The transect of sites drilled spans both latitude and longitude in the...
Resource Type:: Article
Full Text:: ,...M) (in this study, M = 8). The M time series, represented by xm(t), are decomposed into a set of

Sediment depths determined by comparison of grape and logging denisty data during Leg 138

Creator:: Mix, Alan C., Harris, Sara E., Hagelberg, T. K., Pisias, Nicklas G., and Shackleton, N. J.
Abstract:: Establishing true depths of recovered sediments is critical to determining sedimentation rates for high-resolution paleoclimatic studies. We have corrected the composite depth scale, which accounts for the entire continuous sedimentary sequence, so that sediment depths are consistent with logging depths, or "true" depths. We accomplished this by taking advantage of...
Resource Type:: Article
Full Text:: OF GRAPE AND LOGGING DENSITY DATA DURING LEG 1381 S. Harris,2 T. Hagelberg,2,3 A. Mix,2 N.G. Pisias

Dissolved organic carbon in interstitial waters from sediments of Middle Valley, leg 139

Creator:: Ran, Baiyun and Simoneit, Bernd R. T.
Abstract:: High-temperature combustion oxidation measurements of nonvolatile dissolved organic carbon (DOC) have been determined for pore waters from sediments of Middle Valley, Ocean Drilling Program Leg 139, as well as for overlying and near-bottom seawater. The DOC values in the interstitial waters are generally greater than those in the overlying water...
Resource Type:: Article
Full Text:: hydrocarbon gases. INTRODUCTION Middle Valley, a northern segment of the Juan de Fuca Ridge, is part of a

ScholarsArchive@OSU

Fingered Flow in Two Dimensions 2. Predicting Finger Moisture Profile

The Temporal Response of the Length of a Partially Stratified Estuary to Changes in River Flow and Tidal Amplitude

Turbulent mixing in a strongly forced salt wedge estuary

Structure, variability, and salt flux in a strongly forced salt wedge estuary

Subtidal Salinity and Velocity in the Hudson River Estuary: Observations and Modeling

Estuarine Exchange Flow Quantified with Isohaline Coordinates: Contrasting Long and Short Estuaries

Lipid/bitumen maturation by hydrothermal activity in sediments of Middle Valley, leg 139

Spatial and temporal variability of late Neogene Equatorial Pacific carbonate : ODP Leg 138

Sediment depths determined by comparison of grape and logging denisty data during Leg 138

Dissolved organic carbon in interstitial waters from sediments of Middle Valley, leg 139

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