Index Catalog // ScholarsArchive@OSU

A potential implicit particle method for high-dimensional systems

Creator:: Weir, B., Miller, R. N., and Spitz, Y. H.
Abstract:: This paper presents a particle method designed for high-dimensional state estimation. Instead of weighing random forecasts by their distance to given observations, the method samples an ensemble of particles around an optimal solution based on the observations (i.e., it is implicit). It differs from other implicit methods because it includes...
Resource Type:: Article
Full Text:: . Weir, R. N. Miller, and Y. H. Spitz College of Earth, Ocean, and Atmospheric Sciences, Oregon State

The WAIS Divide deep ice core WD2014 chronology – Part 1: Methane synchronization (68–31 kaBP) and the gas age–ice age difference

Creator:: Buizert, C., Cuffey, K. M., Severinghaus, J. P., Baggenstos, D., Fudge, T. J., Steig, E. J., Markle, B. R., Winstrup, M., Rhodes, R. H., Brook, Edward J., Sowers, T. A., Clow, G. D., Cheng, H., Edwards, R. L., Sigl, M., McConnell, J. R., and Taylor, K. C.
Abstract:: The West Antarctic Ice Sheet Divide (WAIS Divide, WD) ice core is a newly drilled, high-accumulation deep ice core that provides Antarctic climate records of the past ~68 ka at unprecedented temporal resolution. The upper 2850 m (back to 31.2 ka BP) have been dated using annual-layer counting. Here we...
Resource Type:: Article

Seasonal methane accumulation and release from a gas emission site in the central North Sea

Creator:: Mau, S., Gentz, T., Körber, J.-H., Torres, M. E., Römer, M., Sahling, H., Wintersteller, P., Martinez, R., Schlüter, M., and Helmke, E.
Abstract:: Hydroacoustic data document the occurrence of 5 flare clusters and several single flares from which bubbles rise through the entire water column from an active seep site at 40 m water depth in the central North Sea. We investigated the difference in dissolved methane distributions along a 6 km transect...
Resource Type:: Article

Seasonal methane accumulation and release from a gas emission site in the central North Sea

Creator:: Mau, S., Gentz, T., Körber, J.-H., Torres, M. E., Römer, M., Sahling, H., Wintersteller, P., Martinez, R., Schlüter, M., and Helmke, E.
Abstract:: We investigated dissolved methane distributions along a 6 km transect crossing active seep sites at 40 m water depth in the central North Sea. These investigations were done under conditions of thermal stratification in summer (July 2013) and homogenous water column in winter (January 2014). Dissolved methane accumulated below the...
Resource Type:: Article

High resolution measurements of carbon monoxide along a late Holocene Greenland ice core: evidence for in situ production

Creator:: Faïn, X., Chappellaz, J., Rhodes, R. H., Stowasser, C., Blunier, T., McConnell, J. R., Brook, E. J., Preunkert, S., Legrand, M., Debois, T., and Romanini, D.
Abstract:: We present high-resolution measurements of carbon monoxide (CO) concentrations from a shallow ice core of the North Greenland Eemian Ice Drilling project (NEEM-2011-S1). An optical-feedback cavity-enhanced absorption spectrometer (OF-CEAS) coupled to a continuous melter system performed continuous, online analysis during a four-week measurement campaign. This analytical setup generated stable measurements...
Resource Type:: Article

Where to find 1.5 million yr old ice for the IPICS “Oldest-Ice” ice core

Creator:: Fischer, H., Severinghaus, J., Brook, Edward J., Wolff, E., Albert, M., Alemany, O., Arthern, R., Bentley, C., Blankenship, D., Chappellaz, J., Creyts, T., Dahl-Jensen, D., Dinn, M., Frezzotti, M., Fujita, S., Gallee, H., Hindmarsh, R., Hudspeth, D., Jugie, G., Kawamura, K., Lipenkov, V., Miller, H., Mulvaney, R., Parrenin, F., Pattyn, F., Ritz, C., Schwander, J., Steinhage, D., van Ommen, T., and Wilhelms, F.
Abstract:: The recovery of a 1.5 million yr long ice core from Antarctica represents a keystone of our understanding of Quaternary climate, the progression of glaciation over this time period and the role of greenhouse gas cycles in this progression. Here we tackle the question of where such ice may still...
Resource Type:: Article
Full Text:: , T. Creyts9, D. Dahl-Jensen10, M. Dinn4, M. Frezzotti11, S. Fujita12, H. Gallee6, R. Hindmarsh4, D

Comparative Composition, Diversity and Trophic Ecology of Sediment Macrofauna at Vents, Seeps and Organic Falls

Creator:: Bernardino, Angelo F., Levin, Lisa A., Thurber, Andrew R., and Smith, Craig R.
Abstract:: Sediments associated with hydrothermal venting, methane seepage and large organic falls such as whale, wood and plant detritus create deep-sea networks of soft-sediment habitats fueled, at least in part, by the oxidation of reduced chemicals. Biological studies at deep-sea vents, seeps and organic falls have looked at macrofaunal taxa, but...
Resource Type:: Article
Full Text:: *, Lisa A. Levin2, Andrew R. Thurber3, Craig R. Smith4 1 Departamento de Oceanografia e Ecologia

Local artifacts in ice core methane records caused by layered bubble trapping and in situ production: a multi-site investigation

Creator:: Rhodes, Rachael H., Faïn, Xavier, Brook, Edward J., McConnell, Joseph R., Maselli, Olivia J., Sigl, Michael, Edwards, Jon, Buizert, Christo, Blunier, Thomas, Chappellaz, Jérôme, and Freitag, Johannes
Abstract:: Advances in trace gas analysis allow localised, non-atmospheric features to be resolved in ice cores, superimposed on the coherent atmospheric signal. These high-frequency signals could not have survived the low-pass filter effect that gas diffusion in the firn exerts on the atmospheric history and therefore do not result from changes...
Resource Type:: Article

AI, Robot: A Rhetorical Analysis of Jeopardy! Matches Featuring IBM’s Artificial Intelligence

Creator:: Steele, Evan T.
Abstract:: The relationship between the public and new technologies has historically been a tumultuous one, with public perceptions ranging from excited rapid adoption to standoffish pessimism. In 2011, IBM tried to use competition as a means of showcasing a new technology to the public. This thesis is a work of rhetorical...
Resource Type:: Masters Thesis
Full Text:: . 1, 1968, p. 1. 4 Rahwan, Iyad, and Guillermo R. Simari. Argumentation in Artificial Intelligence

Clostridium difficile Spore-Macrophage Interactions: Spore Survival

Creator:: Paredes-Sabja, Daniel, Cofre-Araneda, Glenda, Brito-Silva, Christian, Pizarro-Guajardo, Marjorie, and Sarker, Mahfuzur R.
Abstract:: Background: Clostridium difficile is the main cause of nosocomial infections including antibiotic associated diarrhea, pseudomembranous colitis and toxic megacolon. During the course of Clostridium difficile infections (CDI), C. difficile undergoes sporulation and releases spores to the colonic environment. The elevated relapse rates of CDI suggest that C. difficile spores has...
Resource Type:: Article
Full Text:: Pizarro-Guajardo1, Mahfuzur R. Sarker2,3* 1 Laboratorio de Mecanismos de Patogénesis Bacteriana

ScholarsArchive@OSU

A potential implicit particle method for high-dimensional systems

The WAIS Divide deep ice core WD2014 chronology – Part 1: Methane synchronization (68–31 kaBP) and the gas age–ice age difference

Seasonal methane accumulation and release from a gas emission site in the central North Sea

Seasonal methane accumulation and release from a gas emission site in the central North Sea

High resolution measurements of carbon monoxide along a late Holocene Greenland ice core: evidence for in situ production

Where to find 1.5 million yr old ice for the IPICS “Oldest-Ice” ice core

Comparative Composition, Diversity and Trophic Ecology of Sediment Macrofauna at Vents, Seeps and Organic Falls

Local artifacts in ice core methane records caused by layered bubble trapping and in situ production: a multi-site investigation

AI, Robot: A Rhetorical Analysis of Jeopardy! Matches Featuring IBM’s Artificial Intelligence

Clostridium difficile Spore-Macrophage Interactions: Spore Survival

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