M
Marcel G. Schaap
Researcher at University of Arizona
Publications - 105
Citations - 9446
Marcel G. Schaap is an academic researcher from University of Arizona. The author has contributed to research in topics: Pedotransfer function & Hydraulic conductivity. The author has an hindex of 41, co-authored 105 publications receiving 8267 citations. Previous affiliations of Marcel G. Schaap include University of California, Riverside & United States Department of Agriculture.
Papers
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Journal ArticleDOI
On the effective measurement frequency of time domain reflectometry in dispersive and nonconductive dielectric materials
TL;DR: In this article, the impact of dielectric dispersion on the TDR signal, considering lossless materials (negligible electrical conductivity), was examined using a transmission line model.
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Using microscope observations of thin sections to estimate soil permeability with the Kozeny–Carman equation
Marcel G. Schaap,Inma Lebron +1 more
TL;DR: In this paper, the authors used the K-C equation as a semi-physical model for estimating the soil permeability using data derived from microscopy observations and obtained surface areas and porosities from two-point correlation functions derived from scanning electron microscope images.
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Measurement and modeling of the TDR signal propagation through layered dielectric media
TL;DR: In this article, the authors examined the issue of how the permittivity along a time domain reflectometry (TDR) probe is averaged as a function of layer thickness and probe orientation.
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Comparison of Models for Indirect Estimation of Water Retention and Available Water in Surface Soils
TL;DR: In this paper, the authors focus on PTFs for water retention and show that systematic errors in five existing PTF models can be reduced by using water content-based objective functions, instead of parameter value based objective functions.
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The Landscape Evolution Observatory: a large-scale controllable infrastructure to study coupled Earth-surface processes
Luke A. Pangle,Stephen B. DeLong,Stephen B. DeLong,Nate Abramson,John Adams,Greg A. Barron-Gafford,David D. Breshears,Paul D. Brooks,Jon Chorover,William E. Dietrich,Katerina Dontsova,Matej Durcik,Javier E. Espeleta,Javier E. Espeleta,Ty P. A. Ferré,Régis Ferrière,Régis Ferrière,Whitney Henderson,Edward A. Hunt,Travis E. Huxman,David Millar,Brendan P. Murphy,Brendan P. Murphy,Guo Yue Niu,Mitch Pavao-Zuckerman,Jon D. Pelletier,Craig Rasmussen,Joaquin Ruiz,Scott R. Saleska,Marcel G. Schaap,Michael Sibayan,Peter Troch,Markus Tuller,Joost van Haren,Xubin Zeng +34 more
TL;DR: The Landscape Evolution Observatory (LEO) as mentioned in this paper is a large-scale controllable infrastructure consisting of three replicated artificial landscapes (each 330m 2 surface area) within the climate-controlled Biosphere 2 facility in Arizona, USA.