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@ARTICLE{Schaller:888962,
author = {Schaller, Mirjam and Dal Bo, Igor and Ehlers, Todd A. and
Klotzsche, Anja and Drews, Reinhard and Fuentes Espoz, Juan
Pablo and van der Kruk, Jan},
title = {{C}omparison of regolith physical and chemical
characteristics with geophysical data along a climate and
ecological gradient, {C}hilean {C}oastal {C}ordillera (26 to
38° {S})},
journal = {Soil},
volume = {6},
number = {2},
issn = {2199-398X},
address = {Göttingen},
publisher = {Copernicus Publ.},
reportid = {FZJ-2020-05361},
pages = {629 - 647},
year = {2020},
abstract = {We combine geophysical observations from ground-penetrating
radar (GPR) with regolith physical and chemical properties
from pedons excavated in four study areas spanning 1300 km
of the climate and ecological gradient in the Chilean
Coastal Cordillera. Our aims are the following: (1) to
relate GPR observations to depth-varying regolith physical
and weathering-related chemical properties in adjacent
pedons and (2) to evaluate the lateral extent to which these
properties can be extrapolated along a hillslope using GPR
observations. Physical observations considered include
regolith bulk density and grain size distribution, whereas
chemical observations are based on major and trace element
analysis. Results indicate that visually determined pedolith
thickness and the transition from the B to C horizons
generally correlate with maximums in the 500 and 1000 MHz
GPR envelope profiles. To a lesser degree, these maximums in
the GPR envelope profiles agree with maximums in
weathering-related indices such as the chemical index of
alteration (CIA) and the chemical index of mass transfer
(τ) for Na. Finally, we find that upscaling from the pedon
to hillslope scale is possible with geophysical methods for
certain pedon properties. Taken together, these findings
suggest that the GPR profiles down hillslopes can be used to
infer lateral thickness variations in pedolith horizons in
different ecologic and climate settings, and to some degree
the physical and chemical variations with depth.},
cin = {IBG-3},
ddc = {550},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {255 - Terrestrial Systems: From Observation to Prediction
(POF3-255)},
pid = {G:(DE-HGF)POF3-255},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000600177000001},
doi = {10.5194/soil-6-629-2020},
url = {https://juser.fz-juelich.de/record/888962},
}