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@ARTICLE{DalBo:862526,
author = {Dal Bo, Igor and Klotzsche, Anja and Schaller, Mirjam and
Ehlers, Todd A. and Kaufmann, Manuela and Fuentes Espoz,
Juan Pablo and Vereecken, Harry and van der Kruk, Jan},
title = {{G}eophysical imaging of regolith in landscapes along a
climate and vegetation gradient in the {C}hilean coastal
cordillera},
journal = {Catena},
volume = {180},
issn = {0341-8162},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2019-02825},
pages = {146 - 159},
year = {2019},
abstract = {Many studies have recently shown the potential of
geophysical tools in bridging the information gap between
individual point-scale measurements. Here, we upscale and
extend the point-scale layering information from pedons
(excavated pit of 1 m2) using geophysical methods. We
applied multi-frequency ground-penetrating radar (GPR) in
four study areas in the extreme climate and vegetation
gradient of the Chilean Coastal Cordillera. The main goals
of this study were to understand how granitic based regolith
material varies depending on climate, vegetation cover,
aspect, and topography.GPR was successfully used in all four
study areas. Reflections, which were imaged up to a depth of
8 m, could be associated with boundaries visible in the
pedons. The main recognizable reflections were linked with
the interface between the mobile soil and the immobile
saprolite. This boundary is characterized by
hyperbolic-shape features, probably connected to
heterogeneities (e.g. pebbles). A deeper GPR penetration
depth in south-facing hillslopes was observed than in
north-facing hillslopes. This is probably due to less sun
exposure in the south facing slopes, which results in higher
soil water content and denser plant growth, facilitating
weathering processes. Furthermore, thicker layers in the GPR
profiles are visible going from north to south along the
latitude. Most of these observations were in agreement with
the soil pedons.These results demonstrate the utility of the
GPR technique for characterizing subsurface variations in
regolith properties (e.g. thickness, boundaries). Additional
soil pedons should be excavated based on GPR results.
Applying noninvasive geophysical methods could improve the
understanding of the interactions between soil formation,
vegetation, and other environmental parameters.},
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:000472244900014},
doi = {10.1016/j.catena.2019.04.023},
url = {https://juser.fz-juelich.de/record/862526},
}