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Statements

Subject Item
n2:RIV%2F00216208%3A11310%2F13%3A10146088%21RIV14-MSM-11310___
rdf:type
skos:Concept n13:Vysledek
dcterms:description
The influence of past microclimates on the morphology and distribution of clasts is considered for relict large-scale sorted polygons in the Krkonoše Mountains (Czech Republic). Sixty-two sorted polygons with an average length of 194 cm and an average height of 21.5 cm were measured at four sites on Mt. Luční hora, at elevations of 1455 to 1555 m a.s.l. The polygons consist of tabular clasts with a mean length of 11 cm at the borders and 5 cm in the interiors. Smaller polygons are better sorted because of shorter distances for clasts to reach their borders. Polygons with greater relative height are better sorted due to more intensive slope processes associated with differential frost heaving. Better sorted and more domed polygons at higher altitudes suggest more severe and longer-lasting microclimates suitable for the development of sorted polygons. The altitudinal gradient in polygon morphology and sorting suggests the dominant role of microlimate in the periglacial environment of the summit area of the Krkonoše Mountains during the Last Glacial/Holocene period. Polygon development probably involves positive feedback between morphology and frost susceptibility, driven by microclimate. The proposed method for evaluating frost sorting allows for rapid non-invasive assessment of sorting using modern methods including high-resolution remote sensing (especially terrestrial photogrammetry). The influence of past microclimates on the morphology and distribution of clasts is considered for relict large-scale sorted polygons in the Krkonoše Mountains (Czech Republic). Sixty-two sorted polygons with an average length of 194 cm and an average height of 21.5 cm were measured at four sites on Mt. Luční hora, at elevations of 1455 to 1555 m a.s.l. The polygons consist of tabular clasts with a mean length of 11 cm at the borders and 5 cm in the interiors. Smaller polygons are better sorted because of shorter distances for clasts to reach their borders. Polygons with greater relative height are better sorted due to more intensive slope processes associated with differential frost heaving. Better sorted and more domed polygons at higher altitudes suggest more severe and longer-lasting microclimates suitable for the development of sorted polygons. The altitudinal gradient in polygon morphology and sorting suggests the dominant role of microlimate in the periglacial environment of the summit area of the Krkonoše Mountains during the Last Glacial/Holocene period. Polygon development probably involves positive feedback between morphology and frost susceptibility, driven by microclimate. The proposed method for evaluating frost sorting allows for rapid non-invasive assessment of sorting using modern methods including high-resolution remote sensing (especially terrestrial photogrammetry).
dcterms:title
Morphology, Sorting and Microclimates of Relict Sorted Polygons, Krkonoše Mountains, Czech Republic Morphology, Sorting and Microclimates of Relict Sorted Polygons, Krkonoše Mountains, Czech Republic
skos:prefLabel
Morphology, Sorting and Microclimates of Relict Sorted Polygons, Krkonoše Mountains, Czech Republic Morphology, Sorting and Microclimates of Relict Sorted Polygons, Krkonoše Mountains, Czech Republic
skos:notation
RIV/00216208:11310/13:10146088!RIV14-MSM-11310___
n13:predkladatel
n14:orjk%3A11310
n3:aktivita
n18:I n18:S n18:P
n3:aktivity
I, P(KJB301110804), S
n3:cisloPeriodika
4
n3:dodaniDat
n9:2014
n3:domaciTvurceVysledku
n7:8345376 n7:9910662
n3:druhVysledku
n5:J
n3:duvernostUdaju
n17:S
n3:entitaPredkladatele
n20:predkladatel
n3:idSjednocenehoVysledku
89599
n3:idVysledku
RIV/00216208:11310/13:10146088
n3:jazykVysledku
n4:eng
n3:klicovaSlova
Central Europe; the Krkonoše Mountains; morphometry; frost sorting; sorted polygons
n3:klicoveSlovo
n12:frost%20sorting n12:Central%20Europe n12:morphometry n12:sorted%20polygons n12:the%20Krkono%C5%A1e%20Mountains
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[063436317185]
n3:nazevZdroje
Permafrost and Periglacial Processes
n3:obor
n6:DE
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:projekt
n19:KJB301110804
n3:rokUplatneniVysledku
n9:2013
n3:svazekPeriodika
24
n3:tvurceVysledku
Uxa, Tomáš Křížek, Marek
n3:wos
000327732000005
s:issn
1045-6740
s:numberOfPages
9
n16:doi
10.1002/ppp.1789
n15:organizacniJednotka
11310