Index Catalog // ScholarsArchive@OSU

Fiber optics opens window on stream dynamics

Creator:: Selker, John, van de Giesen, Nick, Westhoff, Martijn, Luxemburg, Wim, and Parlange, Marc B.
Abstract:: A new approach to monitoring surface waters using distributed fiber optic temperature sensing is presented, allowing resolutions of temperature of 0.01°C every meter along a fiber optic cable of up to 10,000 m in length. We illustrate the potential of this approach by quantifying both stream temperature dynamics and groundwater...
Resource Type:: Article
Full Text:: optics opens window on stream dynamics John Selker,1 Nick van de Giesen,2 Martijn Westhoff,2 Wim

Practical considerations for enhanced-resolution coil-wrapped distributed temperature sensing

Creator:: Hilgersom, Koen, van Emmerik, Tim, Solcerova, Anna, Berghuijs, Wouter, Selker, John, and van de Giesen, Nick
Abstract:: Fibre optic distributed temperature sensing (DTS) is widely applied in Earth sciences. Many applications require a spatial resolution higher than that provided by the DTS instrument. Measurements at these higher resolutions can be achieved with a fibre optic cable helically wrapped on a cylinder. The effect of the probe construction,...
Resource Type:: Article
Full Text:: ., Slingerland, J. D., and van de Giesen, N. C.: Fiber optic distributed temperature sensing for the

Double-Ended Calibration of Fiber-Optic Raman Spectra Distributed Temperature Sensing Data

Creator:: van de Giesen, Nick, Steele-Dunne, Susan C., Jansen, Jop, Hoes, Olivier, Hausner, Mark B., Tyler, Scott, and Selker, John
Abstract:: Over the past five years, Distributed Temperature Sensing (DTS) along fiber optic cables using Raman backscattering has become an important tool in the environmental sciences. Many environmental applications of DTS demand very accurate temperature measurements, with typical RMSE < 0.1 K. The aim of this paper is to describe and...
Resource Type:: Article
Full Text:: Calibration of Fiber-Optic Raman Spectra Distributed Temperature Sensing Data Nick van de Giesen 1,*, Susan

Carbon monoxide as a tracer of gas transport in snow and other natural porous media

Creator:: Huwald, Hendrik, Selker, John S., Tyler, Scott W., Calaf, Marc, van de Giesen, Nick C., and Parlange, Marc B.
Abstract:: The movement of air in natural porous media is complex and challenging to measure. Yet gas transport has important implications, for instance, for the evolution of the seasonal snow cover and for water vapor transport in soil. A novel in situ multi-sensor measurement system providing high-resolution observation of gas transport...
Resource Type:: Article
Full Text:: ., J. S. Selker, S. W. Tyler, M. Calaf, N. C. van de Giesen, and M. B. Parlange (2012), Carbon monoxide

Calibrating Single-Ended Fiber-Optic Raman Spectra Distributed Temperature Sensing Data

Creator:: Hausner, Mark B., Suarez, Francisco, Glander, Kenneth E., van de Giesen, Nick, Selker, John S., and Tyler, Scott W.
Abstract:: Hydrologic research is a very demanding application of fiber-optic distributed temperature sensing (DTS) in terms of precision, accuracy and calibration. The physics behind the most frequently used DTS instruments are considered as they apply to four calibration methods for single-ended DTS installations. The new methods presented are more accurate than...
Resource Type:: Article
Full Text:: Distributed Temperature Sensing Data Mark B. Hausner 1,*, Francisco Suárez 1, Kenneth E. Glander 2, Nick van

SaydeChadiBioEcolEngMappingVariabilitySoil.pdf

Creator:: Sayde, Chadi, Benitez Buelga, Javier, Rodriguez-Sinobas, Leonor, El Khoury, Laureine, English, Marshall, van de Giesen, Nick, and Selker, John S.
Abstract:: The Actively Heated Fiber Optic (AHFO) method is shown to be capable of measuring soil water content several times per hour at 0.25 m spacing along cables of multiple kilometers in length. AHFO is based on distributed temperature sensing (DTS) observation of the heating and cooling of a buried fiber-optic...
Full Text:: ., Buelga, J. B., Rodriguez‐Sinobas, L., El Khoury, L., English, M., van de Giesen, N., & Selker, J. S

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:: N. C. van de Giesen (2010), Fea- sibility of soil moisture estimation using passive distributed

Distributed fiber-optic temperature sensing for hydrologic systems

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...
Resource Type:: Article
Full Text:: Luc Thévenaz,3 Hendrik Huwald,2 Alfred Mallet,2 Wim Luxemburg,4 Nick van de Giesen,4 Martin Stejskal

Validation of IMERG Precipitation in Africa

Creator:: Dezfuli, Amin K., Ichoku, Charles M., Huffman, George J., Mohr, Karen I., Selker, John S., van de Giesen, Nick, Hochreutener, Rebecca, and Annor, Frank O.
Abstract:: Understanding of hydroclimatic processes in Africa has been hindered by the lack of in situ precipitation measurements. Satellite-based observations, in particular, the TRMM Multisatellite Precipitation Analysis (TMPA) have been pivotal to filling this void. The recently released Integrated Multisatellite Retrievals for GPM (IMERG) project aims to continue the legacy of...
Resource Type:: Article
Full Text:: ,f CHARLES M. ICHOKU,a GEORGE J. HUFFMAN,a KAREN I. MOHR,a JOHN S. SELKER,c NICK VAN DE GIESEN,d

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:: Beek, J. Selker, H. H. G. Savenije, and N. van de Giesen (2008), Tree rainfall interception measured by

ScholarsArchive@OSU

Fiber optics opens window on stream dynamics

Practical considerations for enhanced-resolution coil-wrapped distributed temperature sensing

Double-Ended Calibration of Fiber-Optic Raman Spectra Distributed Temperature Sensing Data

Carbon monoxide as a tracer of gas transport in snow and other natural porous media

Calibrating Single-Ended Fiber-Optic Raman Spectra Distributed Temperature Sensing Data

SaydeChadiBioEcolEngMappingVariabilitySoil.pdf

Feasibility of soil moisture monitoring with heated fiber optics

Distributed fiber-optic temperature sensing for hydrologic systems

Validation of IMERG Precipitation in Africa

Tree rainfall interception measured by stem compression

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