Index Catalog // ScholarsArchive@OSU

Creator:: Selker, John S., Thevenaz, Luc, Huwald, Hendrik, Mallet, Alfred, Luxemburg, Wim, van de Giesen, Nick, Stejskal, Martin, Zeman, Josef, Westhoff, Martijn, and Parlange, Marc B.
Abstract:: Instruments for distributed fiber-optic measurement of temperature are now available with temperature resolution of 0.01°C and spatial resolution of 1 m with temporal resolution of fractions of a minute along standard fiber-optic cables used for communication with lengths of up to 30,000 m. We discuss the spectrum of fiber-optic tools...
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Full Text:: , Civil and Environmental Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland

Creator:: Kumar, Praveen, Illangasekare, Tissa, Sander, Graham, Selker, John, and Torgersen, Thomas
Abstract:: None
Resource Type:: Article
Full Text:: Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA. 2Editor; Environmental

Creator:: Ferre, Ty P. A. and Selker, John S.
Abstract:: A new apparatus is presented that is capable of applying a constant fluid pressure at inflow and outflow boundaries. The apparatus can be refilled during operation and does not rely on an overflow mechanism. The device is constructed of two vessels, one that contains the delivered fluid and the other...
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Full Text:: Arizona, Tucson, Arizona, USA. 2Department of Biological and Ecological Engineering, Oregon State

Creator:: Selker, John and Ferre, Ty P. A.
Abstract:: None
Resource Type:: Article
Full Text:: question correctly is one of the primary goals of hydrologic science. We do this through development of

Creator:: Burns, Erick R., Selker, John S., Parlange, Jean-Yves, and Guenther, Ronald B.
Abstract:: Though many arid and contaminated sites have high salinity, prediction of effects of salinity on water movement in soils has been based on dilute solution approximations. Here a sensitivity analysis compares predicted liquid and vapor pressure in variably saturated porous media found using both the dilute approximations and a more...
Resource Type:: Article
Full Text:: , Alberta, Canada. 4Department of Biological and Environmental Engineering, Cornell University, Ithaca, New

Creator:: Yarwood, R. R., Rockhold, M. L., Niemet, M. R., Selker, J. S., and Bottomley, P. J.
Abstract:: A novel analytical method was developed that permitted real-time, noninvasive measurements of microbial growth and associated changes in hydrodynamic properties in porous media under unsaturated flowing conditions. Salicylate-induced, lux gene-based bioluminescence was used to quantify the temporal and spatial development of colonization over a 7-day time course. Water contents were...
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Full Text:: in subsurface environments is of great interest in the field of environmental protection. Many

Creator:: Sayde, Chadi, Gregory, Christopher, Gil‐Rodriguez, Maria, Tufillaro, Nick, Tyler, Scott, van de Giesen, Nick, English, Marshal, Cuenca, Richard, and Selker, John S.
Abstract:: Accurate methods are needed to measure changing soil water content from meter to kilometer scales. Laboratory results demonstrate the feasibility of the heat pulse method implemented with fiber optic temperature sensing to obtain accurate distributed measurements of soil water content. A fiber optic cable with an electrically conductive armoring was...
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Full Text:: afforded many important opportunities in environmental monitoring [e.g., Selker et al., 2006a, 2006b; Tyler

Creator:: Vercauteren, Nikki, Huwald, Hendrik, Bou-Zeid, Elie, Selker, John S., Lemmin, Ulrich, Parlange, Marc B., and Lunati, Ivan
Abstract:: In lentic water bodies, such as lakes, the water temperature near the surface typically increases during the day, and decreases during the night as a consequence of the diurnal radiative forcing (solar and infrared radiation). These temperature variations penetrate vertically into the water, transported mainly by heat conduction enhanced by...
Resource Type:: Article
Full Text:: Environmental Engineering, Princeton Uni- versity, Princeton, New Jersey, USA. 3Department of Biological and

Creator:: Walter, M. T., Kim, J.-S., Steenhuis, T. S., Parlange, J.-Y., Heilig, A., Braddock, R. D., Selker, J. S., and Boll, J.
Abstract:: Artificial capillary barriers are being used to divert water away from sensitive underground regions. Conversely, funneled flow over natural capillary barriers may increase the danger of groundwater contamination by decreasing the travel time and contact area. There have been relatively few experimental studies of capillary barrier flow patterns. In this...
Resource Type:: Article
Full Text:: Science, University of Alaska, Ju- Beau. 2Department of Agricultural Engineering, Chungbuk National Uni

Creator:: Steele‐Dunne, S. C., Rutten, M. M., Krzeminska, D. M., Hausner, M., Tyler, S. W., Selker, J., Bogaard, T. A., and van de Giesen, N. C.
Abstract:: Through its role in the energy and water balances at the land surface, soil moisture is a key state variable in surface hydrology and land-atmosphere interactions. Point observations of soil moisture are easy to make using established methods such as time domain reflectometry and gravimetric sampling. However, monitoring large-scale variability...
Resource Type:: Article
Full Text:: of Civil Engineering and Geosciences, Delft University of Technology, Delft, Netherlands

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