Index Catalog // ScholarsArchive@OSU

Crustal structure beneath the Strait of Juan de Fuca and southern Vancouver Island from seismic and gravity analyses

Creator:: Graindorge, D., Spence, G., Charvis, P., Collot, J. Y., Hyndman, R., and Tréhu, Anne Martine
Abstract:: Wide-angle and vertical incidence seismic data from Seismic Hazards Investigations in Puget Sound (SHIPS), gravity modeling, and seismicity are used to derive two-dimensional crustal models beneath the Strait of Juan de Fuca. The Eocene volcanic Crescent-Siletz terrane is significantly thicker than previously recognized and extends from near the surface to...
Resource Type:: Article

Upward shifts in the southern Hydrate Ridge gas hydrate stability zone following postglacial warming, offshore Oregon

Creator:: Bangs, Nathan Lawrence Bailey, Musgrave, Robert J., and Tréhu, Anne Martine
Abstract:: High‐resolution three‐dimensional (3‐D) seismic reflection data acquired on the R/V Thomas G. Thompson in 2000 reveal a pair of bottom simulating reflections (BSRs) across a broad region of southern Hydrate Ridge, offshore Oregon. The primary BSR (BSRp) is a regionally extensive reflection that lies 120–150 m below seafloor and exhibits...
Resource Type:: Article
Full Text:: methane hydrate stability field for structure I hydrates to within the limits of instrument errors. We

A simple model for the cloud adjacency effect and the apparent bluing of aerosols near clouds

Creator:: Marshak, Alexander, Wen, Guoyong, Coakley, James A., Remer, Lorraine A., Loeb, Norman G., and Cahalan, Robert F.
Abstract:: In determining aerosol-cloud interactions, the properties of aerosols must be characterized in the vicinity of clouds. Numerous studies based on satellite observations have reported that aerosol optical depths increase with increasing cloud cover. Part of the increase comes from the humidification and consequent growth of aerosol particles in the moist...
Resource Type:: Article
Full Text:: variability), cloud contamination is considered [e.g., Torres et al., 2002; Sinyuk et al., 2003]. The second

Seismic sequence stratigraphy and tectonic evolution of Southern Hydrate Ridge

Creator:: Chevallier, Johanna, Tréhu, Anne Martine, Bangs, Nathan Lawrence Bailey, Johnson, Joel E., and Meyer, H. Jack
Abstract:: This paper presents a seismic sequence and structural analysis of a high-resolution three-dimensional seismic reflection survey that was acquired in June 2000 in preparation for Ocean Drilling Program (ODP) Leg 204. The seismic data were correlated with coring and logging results from nine sites drilled in 2002 during Leg 204....
Resource Type:: Article
Full Text:: OF SOUTHERN HYDRATE RIDGE Tréhu, A.M., Bohrmann, G., Torres, M.E., and Colwell, F.S. (Eds

North-south variability in the history of deformation and fluid venting across Hydrate Ridge, Cascadia margin

Creator:: Johnson, Joel E., Goldfinger, Chris, Tréhu, Anne M., Bangs, Nathan Lawrence Bailey, Torres, Marta E., and Chevallier, Johanna
Abstract:: Hydrate Ridge is an accretionary thrust ridge located on the lower slope of the central Cascadia convergent margin. Structural mapping based on two-dimensional and three-dimensional multichannel seismic reflection profiles and gridded bathymetry coupled with deep-towed sidescan sonar data and Ocean Drilling Program (ODP) biostratigraphy suggests that seafloor fluid venting patterns...
Resource Type:: Article
Full Text:: DEFORMATION AND FLUID VENTING ACROSS HYDRATE RIDGE, CASCADIA MARGIN Tréhu, A.M., Bohrmann, G., Torres, M.E

Data report : composition of clay minerals from hemiplegic sediments at Hydrate Ridge, Cascadia subduction zone

Creator:: Underwood, Michael and Torres, Marta E.
Abstract:: This report describes the results of semiquantitative analysis of clay mineral composition by X-ray diffraction. The samples consist of hemipelagic mud and mudstone cored from Hydrate Ridge during Leg 204 of the Ocean Drilling Program. We analyzed oriented aggregates of the clay-sized fractions (<2 μm) to estimate relative percentages of...
Resource Type:: Article
Full Text:: HEMIPELAGIC SEDIMENTS AT HYDRATE RIDGE, CASCADIA SUBDUCTION ZONE Tréhu, A.M., Bohrmann, G., Torres, M.E

Microbial methane generation and gas transport in shallow sediments of an accretionary complex, southern hydrate ridge (ODP Leg 204), offshore Oregon, USA

Creator:: Claypool, George E., Milkov, Alexei V., Lee, Young-Joo, Torres, Marta E., Borowski, Walter S., and Tomaru, Hitoshi
Abstract:: Sediments at the southern summit of Hydrate Ridge display two distinct modes of gas hydrate occurrence. The dominant mode is associated with active venting of gas exsolved from the accretionary prism and leads to high concentrations (15%–40% of pore space) of gas hydrate in seafloor or near-surface sediments at and...
Resource Type:: Article
Full Text:: Tréhu, A.M., Bohrmann, G., Torres, M.E., and Colwell, F.S. (Eds.) Proceedings of the Ocean Drilling

Effects of wood on debris flow runout in small mountain watersheds

Creator:: Lancaster, Stephen T., Hayes, Shannon K., and Grant, Gordon E.
Abstract:: Debris flows have typically been viewed as two-phase mixtures of sediment and water, but in forested mountain landscapes, wood can represent a sizable fraction of total flow volume. The effects of this third phase on flow behavior are poorly understood. To evaluate whether wood can have a significant effect on...
Resource Type:: Article
Full Text:: many natural failures [Montgomery et al., 1997; Torres et al., 1998; Iverson, 2000]. [19] Critical

Flagging the trail : one hundred years of managing cultural resources

Creator:: Gillio, David A. and United States. Forest Service. Southwestern Region
Abstract:: Heritage resources management ; rept. no. 17
Resource Type:: Technical Report
Full Text:: I. Heritage Consideration Checklist for Allotment Management Plans . . . . . . . . . . . . . . . . 1

Development of Anthocyanins and Tannins in Pinot noir Grapes and their Relative Importance in Wine [2002]

Creator:: Kennedy, James A., Godard, Mee, and Watson, Barney
Abstract:: The objectives of this research project are to understand tannin and anthocyanin changes during berry development in Pinot noir fruit and wines. Specifically, the objectives of this research project are: · Determine the effect of berry development on the composition of tannins in cv. Pinot noir berries · Determine the...
Resource Type:: Technical Report
Full Text:: , including temperature (Kliewer and Torres, 1972; Hale and Buttrose, 1974), light (Dokoozlian and Kliewer

ScholarsArchive@OSU

Crustal structure beneath the Strait of Juan de Fuca and southern Vancouver Island from seismic and gravity analyses

Upward shifts in the southern Hydrate Ridge gas hydrate stability zone following postglacial warming, offshore Oregon

A simple model for the cloud adjacency effect and the apparent bluing of aerosols near clouds

Seismic sequence stratigraphy and tectonic evolution of Southern Hydrate Ridge

North-south variability in the history of deformation and fluid venting across Hydrate Ridge, Cascadia margin

Data report : composition of clay minerals from hemiplegic sediments at Hydrate Ridge, Cascadia subduction zone

Microbial methane generation and gas transport in shallow sediments of an accretionary complex, southern hydrate ridge (ODP Leg 204), offshore Oregon, USA

Effects of wood on debris flow runout in small mountain watersheds

Flagging the trail : one hundred years of managing cultural resources

Development of Anthocyanins and Tannins in Pinot noir Grapes and their Relative Importance in Wine [2002]

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