Index Catalog // ScholarsArchive@OSU

Creator:: Holman, R. A. and Bowen, A. J.
Abstract:: In shallow water, any two waves of the same frequency are shown to produce complex patterns of drift velocity above the sea bed. If the longshore components λ₁, λ₂ of the wave numbers of the two waves are different, these steady flow patterns exhibit a longshore periodicity of wave number...
Resource Type:: Article
Full Text:: Bars, Bumps, and Holes' Models for the Generation of Complex Beach Topography R. A. HOLMAN AND A. J

Creator:: Harris, Robert N. and Chapman, David S.
Abstract:: The southern portion of the Kodiak-Bowie seamonnt chain in the southeastern Gulf of Alaska presents a unique opportunity to investigate loading on young oceanic lithosphere. Oceanic lithosphere younger than 25 Ma is loaded both by sediments in a deep offshore trough and by seamount 100-200 km offshore. Free-air gravity anomaly...
Resource Type:: Article

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

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

Creator:: Dale, Andrew C., Ullman, David S., Barth, John A., and Hebert, Dave
Abstract:: During March–April 1999, 2 weeks of undulating CTD and shipboard acoustic Doppler current profiler surveys revealed the variability of the intense internal tide on the northern edge of Georges Bank. The nature of the internal tide was modulated by episodic surface intrusions of cool, fresh Scotian Shelf Water (SSW), stratifying...
Resource Type:: Article
Full Text:: spring: 1. Tidal and subtidal variability Andrew C. Dale,1 David S. Ullman,2 John A. Barth,1 and Dave

Creator:: Sinton, Christopher W., Christie, David M., and Duncan, Robert A.
Abstract:: Lavas from seamounts of the central Galápagos Platform and the Carnegie Ridge increase in age with distance from the western edge of the platform, consistent with a hotspot model for the generation of these features. The areal distribution of seamount ages suggests that the pattern of dispersed volcanism seen on...
Resource Type:: Article
Full Text:: seamounts Christopher W. Sinton, David M. Christie, and Robert A. Duncan College of Oceanic and

Creator:: Kruse, Sarah E., Liu, Zhengrong J., Naar, David F., and Duncan, Robert A.
Abstract:: Bathymetry and gravity data collected during Legs 5, 6, and 7 of the 1993 GLORIA Expedition and the recently released 2-min altimetry-derived global gravity grid are used to determine the effective elastic thickness of the lithosphere along the Easter Seamount Chain (ESC). Forward modeling, admittance, and coherence methods yield consistent...
Resource Type:: Article
Full Text:: Department, University of South Florida, Tampa Zhengrong J. Liu • and David F. Naar Marine Science

Creator:: Pyle, D. G., Christie, David M., Mahoney, J. J., and Duncan, Robert A.
Abstract:: Within the Australian-Antarctic Discordance (AAD), a boundary exists between isotopically defined “Pacific-type” and “Indian-type” mid-ocean ridge basalt (MORB) erupted along the Southeast Indian Ridge (SEIR). This boundary has migrated westward beneath the easternmost AAD spreading segment at a minimum rate of 25 mm/yr since 4 Ma; however, its long-term history...
Resource Type:: Article
Full Text:: Institution, Woods Hole Massachusetts R. A. Duncan College of Oceanic and Atmospheric Sciences, Oregon

Creator:: Gomez, Natalya, Pollard, David, Mitrovica, Jerry X., Huybers, Peter, and Clark, Peter U.
Abstract:: We investigate the stability of marine ice sheets by coupling a gravitationally self-consistent sea level model valid for a self-gravitating, viscoelastically deforming Earth to a 1-D marine ice sheet-shelf model. The evolution of the coupled model is explored for a suite of simulations in which we vary the bed slope...
Resource Type:: Article
Full Text:: Evolution of a coupled marine ice sheet–sea level model Natalya Gomez,1 David Pollard,2 Jerry X. Mitrovica

Creator:: Mandt, Kathleen E., de Silva, Shanaka L., Zimbelman, James R., and Crown, David A.
Abstract:: The geologic origin of the Medusae Fossae Formation (MFF) has remained a mystery despite three decades of research. To better constrain its formation, an in-depth analysis of observations made in the literature was combined with a new survey of over 700 Mars Orbiter Camera narrow-angle images of the MFF to...
Resource Type:: Article
Full Text:: David A. Crown5 Received 29 January 2008; revised 17 June 2008; accepted 19 August 2008; published 20

ScholarsArchive@OSU