Soil Physical and Environmental Conditions Controlling Patterned-Ground Variability at a Continuous Permafrost Site, Svalbard
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Soil Physical and Environmental Conditions Controlling Patterned-Ground Variability at a Continuous Permafrost Site, Svalbard. / Watanabe, Tatsuya; Matsuoka, Norikazu; Christiansen, Hanne Hvidtfeldt; Cable, Stefanie.
I: Permafrost and Periglacial Processes, Bind 28, Nr. 2, 2017, s. 433-445.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Soil Physical and Environmental Conditions Controlling Patterned-Ground Variability at a Continuous Permafrost Site, Svalbard
AU - Watanabe, Tatsuya
AU - Matsuoka, Norikazu
AU - Christiansen, Hanne Hvidtfeldt
AU - Cable, Stefanie
N1 - CENPERM[2017]
PY - 2017
Y1 - 2017
N2 - This study examines soil physical and environmental conditions controlling patterned-ground variability on an alluvial fan in a continuous permafrost landscape, at Adventdalen, Svalbard. On-site monitoring of ground temperature, soil moisture and snow depth, laboratory analyses of soil physical properties and principal component analysis indicate that the distribution of patterned ground depends primarily on soil texture, soil moisture and the winter ground thermal regime associated with snow cover. Mudboils and composite patterns (mudboils surrounded by small polygons) occupy well-drained areas composed of clay-rich aeolian sediments. Compared to mudboils, composite patterns show a sharper contrast in soil texture between barren centres and vegetated rims. Hummocks filled with organic materials develop on poorly drained lowlands associated with a shallow water table. Ice-wedge polygons are dominant on sandy loess-covered areas where the local wind regime minimises snow cover, enhancing ground cooling that promotes thermal contraction cracking.
AB - This study examines soil physical and environmental conditions controlling patterned-ground variability on an alluvial fan in a continuous permafrost landscape, at Adventdalen, Svalbard. On-site monitoring of ground temperature, soil moisture and snow depth, laboratory analyses of soil physical properties and principal component analysis indicate that the distribution of patterned ground depends primarily on soil texture, soil moisture and the winter ground thermal regime associated with snow cover. Mudboils and composite patterns (mudboils surrounded by small polygons) occupy well-drained areas composed of clay-rich aeolian sediments. Compared to mudboils, composite patterns show a sharper contrast in soil texture between barren centres and vegetated rims. Hummocks filled with organic materials develop on poorly drained lowlands associated with a shallow water table. Ice-wedge polygons are dominant on sandy loess-covered areas where the local wind regime minimises snow cover, enhancing ground cooling that promotes thermal contraction cracking.
KW - Active layer
KW - Hummock
KW - Ice-wedge polygon
KW - Mudboil
KW - Patterned ground
KW - Svalbard
U2 - 10.1002/ppp.1924
DO - 10.1002/ppp.1924
M3 - Journal article
AN - SCOPUS:84997530314
VL - 28
SP - 433
EP - 445
JO - Permafrost and Periglacial Processes
JF - Permafrost and Periglacial Processes
SN - 1045-6740
IS - 2
ER -
ID: 173258331