Index Catalog // ScholarsArchive@OSU

Toward a formal definition of water scarcity in natural-human systems

Creator:: Jaeger, W. K., Plantinga, A. J., Chang, H., Dello, K., Grant, G., Hulse, D., McDonnell, J. J., Lancaster, S., Moradkhani, H., Morzillo, A. T., Mote, P., Nolin, A., Santelmann, M., and Wu, J.
Abstract:: Water scarcity may appear to be a simple concept, but it can be difficult to apply to complex natural-human systems. While aggregate scarcity indices are straightforward to compute, they do not adequately represent the spatial and temporal variations in water scarcity that arise from complex systems interactions. The uncertain effects...
Resource Type:: Article
Full Text:: , USA. 9Department of Civil & Environmental Engineering, Portland State Uni- versity, Portland, Oregon

Evolution of superficial lake water temperature profile under diurnal radiative forcing

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:: applied to the experi- mental data leads to an overestimated apparent thermal dif- fusivity even if it is

Feasibility of soil moisture estimation using passive distributed temperature sensing

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:: on the basis of DTS. Several fiber‐optic cables in a vertical profile are used as thermal sensors

Water vapor transport in the vicinity of imbibing saline plumes: Homogeneous and layered unsaturated porous media

Creator:: Weisbrod, Noam, Niemet, Michael R., McGinnis, Thomas, and Selker, John S.
Abstract:: Water vapor transport in the vicinity of imbibing saline solutions was investigated in two-dimensional (2-D) chambers using a light transmission technique. Concentrated NaNO3 solutions (brines) were applied as point sources to the surface of homogenous packs of prewetted silica sand for four different sand grades. The same solutions were applied...
Resource Type:: Article
Full Text:: applied as point sources to the surface of homogenous packs of prewetted silica sand for four different

Calibration of soil moisture sensing with subsurface heated fiber optics using numerical simulation

Creator:: Benítez‐Buelga, Javier, Rodríguez‐Sinobas, Leonor, Sánchez Calvo, Raul, Gil‐Rodríguez, Maria, Sayde, Chadi, and Selker, John S.
Abstract:: The heat pulse probe method can be implemented with actively heated fiber optics (AHFO) to obtain distributed measurements of soil water content (θ) by using reported soil thermal responses measured by Distributed Temperature Sensing (DTS) and with a soil-specific calibration relationship. However, most reported applications have been calibrated to homogeneous...
Resource Type:: Article
Full Text:: - face applied thermal energy. The model presents a novel approach for AHFO applications via Tcum estima

Feasibility of soil moisture monitoring with heated fiber optics

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...
Resource Type:: Article
Full Text:: thermal pulses monitored by observing the distributed Raman backscatter. A new and simple interpretation

Evaporation from a shallow water table: Diurnal dynamics of water and heat at the surface of drying sand

Creator:: Assouline, S., Tyler, S. W., Selker, J. S., Lunati, I., Higgins, C. W., and Parlange, M. B.
Abstract:: Accurate estimates of water losses by evaporation from shallow water tables are important for hydrological, agricultural, and climatic purposes. An experiment was conducted in a weighing lysimeter to characterize the diurnal dynamics of evaporation under natural conditions. Sampling revealed a completely dry surface sand layer after 5 days of evaporation....
Resource Type:: Article
Full Text:: boundary thermal condi- tions and soil thermal properties applied are representative of the experimental

High-resolution temperature sensing in the Dead Sea using fiber optics

Creator:: Arnon, Ali, Lensky, N. G., and Selker, J. S.
Abstract:: The thermal stratification of the Dead Sea was observed in high spatial and temporal resolution by means of fiber-optics temperature sensing. The aim of the research was to employ the novel high-resolution profiler in studying the dynamics of the thermal structure of the Dead Sea and the related processes including...
Resource Type:: Article
Full Text:: & Ecological Engineering, Oregon State University, Corvallis, Oregon, USA Abstract The thermal stratification

Tree rainfall interception measured by stem compression

Creator:: Friesen, J., van Beek, C., Selker, J., Savenije, H. H. G., and van de Giesen, N.
Abstract:: A method for measuring whole-tree interception of precipitation is presented which employs mechanical displacement sensors to measure trunk compression caused by the water captured by the tree. This direct and nondestructive method is demonstrated to be sensitive to less than 5 kg of interception field tests in Netherlands and Ghana.
Resource Type:: Article
Full Text:: Section, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft, Netherlands

Environmental temperature sensing using Raman spectra DTS fiber-optic methods

Creator:: Tyler, Scott W., Selker, John S., Hausner, Mark B., Hatch, Christine E., Torgersen, Thomas, Thodal, Carl E., and Schladow, S. Geoffrey
Abstract:: Raman spectra distributed temperature sensing (DTS) by fiber-optic cables has recently shown considerable promise for the measuring and monitoring of surface and near-surface hydrologic processes such as groundwater–surface water interaction, borehole circulation, snow hydrology, soil moisture studies, and land surface energy exchanges. DTS systems uniquely provide the opportunity to monitor...
Resource Type:: Article
Full Text:: from deep in the crust to the atmosphere. Tracking thermal pulses, estimating fluid fluxes, tracing

ScholarsArchive@OSU

Toward a formal definition of water scarcity in natural-human systems

Evolution of superficial lake water temperature profile under diurnal radiative forcing

Feasibility of soil moisture estimation using passive distributed temperature sensing

Water vapor transport in the vicinity of imbibing saline plumes: Homogeneous and layered unsaturated porous media

Calibration of soil moisture sensing with subsurface heated fiber optics using numerical simulation

Feasibility of soil moisture monitoring with heated fiber optics

Evaporation from a shallow water table: Diurnal dynamics of water and heat at the surface of drying sand

High-resolution temperature sensing in the Dead Sea using fiber optics

Tree rainfall interception measured by stem compression

Environmental temperature sensing using Raman spectra DTS fiber-optic methods

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