Journal ArticleDOI
Measuring Soil Water Content with Ground Penetrating Radar: A Review
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TLDR
A comprehensive review of methods to measure soil water content with ground penetrating radar (GPR) is presented in this article, where the authors distinguish four methods: reflected wave velocity, ground wave velocity and surface reflection coefficient.Abstract:
We present a comprehensive review of methods to measure soil water content with ground penetrating radar (GPR) We distinguish four methodologies: soil water content determined from reflected wave velocity, soil water content determined from ground wave velocity, soil water content determined from transmitted wave velocity between boreholes, and soil water content determined from the surface reflection coefficient For each of these four methodologies, we discuss the basic principles, illustrate the quality of the data with field examples, discuss the possibilities and limitations, and identify areas where future research is required We hope that this review will further stimulate the community to consider ground penetrating radar as one of the possible tools to measure soil water contentread more
Citations
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Soil Moisture Measurement for Ecological and Hydrological Watershed-Scale Observatories: A Review
David A. Robinson,Colin S. Campbell,Jan W. Hopmans,Brian K. Hornbuckle,Scott B. Jones,Rosemary Knight,Fred L. Ogden,John S. Selker,Ole Wendroth +8 more
TL;DR: In this article, the authors review advances in sensor technology, particularly emerging geophysical methods and distributed sensors, aimed at bridging this gap and offer a vision for future research, listing many of the current scientific and technical challenges.
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A decade of Predictions in Ungauged Basins (PUB)—a review
Markus Hrachowitz,Hubert H. G. Savenije,Günter Blöschl,Jeffrey J. McDonnell,Murugesu Sivapalan,John W. Pomeroy,Berit Arheimer,Theresa Blume,Martyn P. Clark,Uwe Ehret,Fabrizio Fenicia,Jim Freer,Alexander Gelfan,Hoshin V. Gupta,Denis A. Hughes,Rolf Hut,Alberto Montanari,Saket Pande,Doerthe Tetzlaff,Peter Troch,Stefan Uhlenbrook,Thibaut Wagener,Hessel Winsemius,Ross Woods,Erwin Zehe,Christophe Cudennec +25 more
TL;DR: The Prediction in Ungauged Basins (PUB) initiative of the International Association of Hydrological Sciences (IAHS) launched in 2003 and concluded by the PUB Symposium 2012 held in Delft (23-25 October 2012), set out to shift the scientific culture of hydrology towards improved scientific understanding of hydrological processes, as well as associated uncertainties and the development of models with increasing realism and predictive power as discussed by the authors.
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On the value of soil moisture measurements in vadose zone hydrology: a review
Harry Vereecken,Johan Alexander Huisman,Heye Bogena,Jan Vanderborght,Jasper A. Vrugt,Jan W. Hopmans +5 more
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Modeling Soil Processes: Review, Key Challenges, and New Perspectives
Harry Vereecken,Andrea Schnepf,Jan W. Hopmans,Mathieu Javaux,Dani Or,Tiina Roose,Jan Vanderborght,Michael H. Young,Wulf Amelung,Matt Aitkenhead,Steven D. Allison,Shmuel Assouline,Philippe C. Baveye,Markus Berli,Nicolas Brüggemann,Peter Finke,Markus Flury,Thomas Gaiser,Gerard Govers,Teamrat A. Ghezzehei,Paul D. Hallett,Harrie-Jan Hendricks Franssen,J. Heppell,Rainer Horn,Johan Alexander Huisman,Diederik Jacques,François Jonard,Stefan Kollet,François Lafolie,Krzysztof Lamorski,Daniel Leitner,Alex B. McBratney,Budiman Minasny,Carsten Montzka,Wolfgang Nowak,Ya. A. Pachepsky,José Padarian,Nunzio Romano,Kurt Roth,Youri Rothfuss,Edwin C. Rowe,Andreas Schwen,Jirka Šimůnek,Aaldrik Tiktak,J.C. van Dam,S.E.A.T.M. van der Zee,Hans-Jörg Vogel,Jasper A. Vrugt,Thomas Wöhling,Iain M. Young +49 more
TL;DR: Key challenges in modeling soil processes are identified, including the systematic incorporation of heterogeneity and uncertainty, the integration of data and models, and strategies for effective integration of knowledge on physical, chemical, and biological soil processes.
References
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Journal ArticleDOI
Electromagnetic determination of soil water content: Measurements in coaxial transmission lines
TL;DR: The dependence of the dielectric constant, at frequencies between 1 MHz and 1 GHz, on the volumetric water content is determined empirically in the laboratory as discussed by the authors, and the effect of varying the texture, bulk density, temperature, and soluble salt content on this relationship was also determined.
Journal ArticleDOI
Ground-penetrating radar for high-resolution mapping of soil and rock stratigraphy
J. L. Davis,A. P. Annan +1 more
TL;DR: In this article, the basic principles and practices involved in acquiring high-quality radar data in the field are illustrated by selected case histories, showing how radar has been used to map the bedrock and delineate soil horizons to a depth of more than 20 m.
Journal ArticleDOI
Microwave Dielectric Behavior of Wet Soil-Part II: Dielectric Mixing Models
TL;DR: In this paper, the authors evaluated the microwave dielectric behavior of soil-water mixtures as a function of water content and soil textural composition for the 1.4-to 18-GHz region.
Journal ArticleDOI
Seismic velocities from surface measurements
TL;DR: In this paper, a simple but accurate formula is developed for the quick calculation of interval velocities from the known x2-T2 technique, which is obtained through a correlation of velocity with rock type and depth.
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