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PANGAEA
Dataset . 2020
Data sources: B2FIND
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Mapped polygon pattern geomorphometry from HRSC-AX, 2009, Adventdalen, Svalbard

Authors: Ulrich, Mathias; Härtel, Stefanie; Hauber, Ernst;

Mapped polygon pattern geomorphometry from HRSC-AX, 2009, Adventdalen, Svalbard

Abstract

Polygonal systems formed by thermal contraction cracking are complex landscape features widespread in terrestrial periglacial regions. The manner in which cracking occurs is controlled by various environmental factors and determines dimension, shape, and orientation of polygons. We studied the geomorphometry of polygonally-patterned ground on Svalbard to draw a terrestrial analogy to small-scale polygonal structures on Mars. We performed a comparative quantitative terrain analysis based on high-resolution stereo remote-sensing data (i.e., HRSC-AX, HiRISE) in combination with terrestrial field data and multivariate statistics to determine the relationship of polygon geomorphometry to local environmental conditions. Results show that polygonal structures on Svalbard and in Utopia Planitia, Mars, are similar with respect to their size and shape. A comparable thermal contraction cracking genesis is likely. Polygon evolution, however, is strongly related to regional and local landscape dynamics. Individual polygon dimensions and orthogonality vary according to age, thermal contraction cracking activity, and local subsurface conditions.This dataset contains polygonal network data from 8 sites on Svalbard in shapefile format:Act-IWS = Active Ice-Wedge site Adventdalen (AD1)AD2 to AD4 = Adventdalen sites 2 to 4IWS = Ice-wedge site AdventdalenCALM = Circumarctic Active-Layer Monitoring polygon site AdventdalenHCP = High Center Polygons site AdventdalenIsdammen = location Isdammen site AdventdalenDetailed information about methods and results can be found in the publication to which this dataset is a supplement (https://doi.org/10.1016/j.geomorph.2011.07.002).

Parameters included:area: area (A) [m²]perimeter: perimeter (P) [m]length: Length (L) largest diameter [m]width: Width (W) smallest diameter [m]thick_ra: Thickness ratio (Th) (The polygon area versus the area of its minimum bounding rectangle) [0 to 1]circular: Circularity (FF) = 4πA/P² [0 to 1]

Keywords

Longitude of event, Ice-wedge Polygons, Binary Object, Event label, AWI Arctic Land Expedition, High Resolution Stereo Camera HRSC AX, Multivariate Statistic, Polygonal Networks, Patterned Ground, Permafrost, Binary Object (File Size), Quantitative Terrain Analysis, Latitude of event, Ice wedge Polygons, High Resolution Stereo Camera HRSC-AX, File content, Earth System Research, NO_Land_2009_Advendalen, Binary Object File Size, Permafrost Characteristic

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average