Index Catalog // ScholarsArchive@OSU

Magnetotelluric Constraints on Lithospheric Properties in the Southeastern United States

Creator:: Murphy, Benjamin S.
Abstract:: By inverting EarthScope long-period magnetotelluric (MT) data from the southeastern United States (SEUS), we obtain electrical conductivity images that provides key insights into the geodynamics of this region. Significantly, we resolve a highly electrically resistive block that extends to mantle depths beneath the modern Piedmont and Coastal Plain physiographic provinces....
Resource Type:: Dissertation

A high-resolution study of tides in the Delaware Bay: Past conditions and future scenarios

Creator:: Hall, George F., Hill, David F., Horton, Benjamin P., Engelhart, Simon E., and Peltier, W. R.
Abstract:: Tides in the Delaware Bay (USA) have been modeled from 7000 years before present (7 ka) to the present day and for selected future sea-level rise scenarios (100 years, 300 years). Historic bathymetries were constructed through use of glacial isostatic adjustment models and a very high spatial resolution (< 100...
Resource Type:: Article
Full Text:: , doi:10.1029/2012GL054675. 1. Introduction [2] Computational models of tides have shown variation in

Correction to "Dynamics of mean and subtidal flow on the New England shelf"

Creator:: Shearman, R. Kipp and Lentz, Steven J.
Resource Type:: Article
Full Text:: mean and subtidal flow on the New England shelf,’’ J. Geophys. Res., 112, C02015, doi:10.1029

Thermal effects of hydrothermal circulation and seamount subduction: Temperatures in the Nankai Trough Seismogenic Zone Experiment transect, Japan

Creator:: Spinelli, G. A. and Harris, R. N.
Abstract:: We examine the thermal effects of seamount subduction. Seamount subduction may cause transient changes in oceanic crust hydrogeology and plate boundary fault position. Prior to subduction, seamounts provide high‐permeability pathways between the basaltic crustal aquifer and overlying ocean that can focus fluid flow and efficiently cool the oceanic crust. As...
Resource Type:: Article
Full Text:: Q0AD21, doi:10.1029/2011GC003727 ISSN: 1525-2027 Thermal effects of hydrothermal circulation and

Increased dissolved terrestrial input to the coastal ocean during the last deglaciation

Creator:: Klinkhammer, Gary P., Mix, Alan C., and Haley, B. A.
Abstract:: Here we present the first downcore results for a new paleoproxy, the Mn/Ca ratio of foraminiferal calcite, applied to sediment accumulated in the extreme Eastern Tropical North Pacific (ETNP) over the last 30,000 years. The Mn/Ca results are compared to oxygen isotopes and sea surface temperature calculated from Mg/Ca. We...
Resource Type:: Article
Full Text:: ocean during the last deglaciation, Geochem. Geophys. Geosyst., 10, Q03009, doi:10.1029/2008GC002219

Detailed volcanostratigraphy of an accreted seamount: Implications for intraplate seamount formation

Creator:: Schnur, Susan R. and Gilbert, Lisa A.
Abstract:: Seamounts are a ubiquitous feature of the seafloor but relatively little is known about their internal structure. A seamount preserved in the Franciscan mélange of California suggests a sequence of formation common to all seamounts. Field mapping, geophysical measurements, and geochemical analyses are combined to interpret three stages of seamount...
Resource Type:: Article
Full Text:: Q0AM05, doi:10.1029/2012GC004301 ISSN: 1525-2027 Detailed volcanostratigraphy of an accreted seamount

Impact of Convective Activity on Precipitation delta O-18 in Isotope-Enabled General Circulation Models

Creator:: Hu, Jun, Emile-Geay, Julien, Nusbaumer, Jesse, and Noone, David
Abstract:: The delta O-18 signal preserved in paleoarchives is widely used to reconstruct past climate conditions. In many speleothems, this signal is classically interpreted via the amount effect. However, recent work has shown that precipitation delta O-18 (delta O-18(p)) is greatly influenced by convective processes distinct from precipitation amount, and new...
Resource Type:: Article
Full Text:: convective precipitation was generated from strong RESEARCH ARTICLE 10.1029/2018JD029187 Key Points

Abrupt change in atmospheric CO₂ during the last ice age

Creator:: Ahn, Jinho, Brook, Edward J., Schmittner, Andreas, and Kreutz, Karl
Abstract:: During the last glacial period atmospheric carbon dioxide and temperature in Antarctica varied in a similar fashion on millennial time scales, but previous work indicates that these changes were gradual. In a detailed analysis of one event we now find that approximately half of the CO₂ increase that occurred during...
Resource Type:: Article
Full Text:: last ice age, Geophys. Res. Lett., 39, L18711, doi:10.1029/ 2012GL053018. 1. Introduction [2] Ancient

Extent of the microbial biosphere in the oceanic crust

Creator:: Heberling, Cara, Lowell, Robert P., Liu, lei, and Fisk, Martin R.
Abstract:: We estimate the depth of the 120°C isotherm by constructing crustal thermal gradients based on theoretical and observed conductive heat flux as a function of lithospheric age. We chose the 120°C isotherm because it is close to the upper limit for prokaryotic life, and therefore, the isotherm approximates the maximum...
Resource Type:: Article
Full Text:: Q08003, doi:10.1029/2009GC002968 ISSN: 1525‐2027 Extent of the microbial biosphere in the oceanic crust

Bed conduction impact on fiber optic distributed temperature sensing water temperature measurements

Creator:: O'Donnell Meininger, T. and Selker, J. S.
Abstract:: Error in distributed temperature sensing (DTS) water temperature measurements may be introduced by contact of the fiber optic cable sensor with bed materials (e.g., seafloor, lakebed, streambed). Heat conduction from the bed materials can affect cable temperature and the resulting DTS measurements. In the Middle Fork John Day River, apparent...
Resource Type:: Article
Full Text:: : Method development, Water Resour. Res., 42, W10410, doi:10.1029/2005WR004787, 2006. Henderson, R. D

ScholarsArchive@OSU

Magnetotelluric Constraints on Lithospheric Properties in the Southeastern United States

A high-resolution study of tides in the Delaware Bay: Past conditions and future scenarios

Correction to "Dynamics of mean and subtidal flow on the New England shelf"

Thermal effects of hydrothermal circulation and seamount subduction: Temperatures in the Nankai Trough Seismogenic Zone Experiment transect, Japan

Increased dissolved terrestrial input to the coastal ocean during the last deglaciation

Detailed volcanostratigraphy of an accreted seamount: Implications for intraplate seamount formation

Impact of Convective Activity on Precipitation delta O-18 in Isotope-Enabled General Circulation Models

Abrupt change in atmospheric CO₂ during the last ice age

Extent of the microbial biosphere in the oceanic crust

Bed conduction impact on fiber optic distributed temperature sensing water temperature measurements

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