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2018-03-21Zeitschriftenartikel DOI: 10.3390/rs10040494
Thaw Subsidence of a Yedoma Landscape in Northern Siberia, Measured In Situ and Estimated from TerraSAR-X Interferometry
dc.contributor.authorAntonova, Sofia
dc.contributor.authorSudhaus, Henriette
dc.contributor.authorStrozzi, Tazio
dc.contributor.authorZwieback, Simon
dc.contributor.authorKääb, Andreas
dc.contributor.authorHeim, Birgit
dc.contributor.authorLanger, Moritz
dc.contributor.authorBornemann, Niko
dc.contributor.authorBoike, Julia
dc.date.accessioned2019-08-29T10:57:30Z
dc.date.available2019-08-29T10:57:30Z
dc.date.issued2018-03-21none
dc.date.updated2019-07-31T17:57:27Z
dc.identifier.urihttp://edoc.hu-berlin.de/18452/21223
dc.description.abstractIn permafrost areas, seasonal freeze-thaw cycles result in upward and downward movements of the ground. For some permafrost areas, long-term downward movements were reported during the last decade. We measured seasonal and multi-year ground movements in a yedoma region of the Lena River Delta, Siberia, in 2013–2017, using reference rods installed deep in the permafrost. The seasonal subsidence was 1.7 ± 1.5 cm in the cold summer of 2013 and 4.8 ± 2 cm in the warm summer of 2014. Furthermore, we measured a pronounced multi-year net subsidence of 9.3 ± 5.7 cm from spring 2013 to the end of summer 2017. Importantly, we observed a high spatial variability of subsidence of up to 6 cm across a sub-meter horizontal scale. In summer 2013, we accompanied our field measurements with Differential Synthetic Aperture Radar Interferometry (DInSAR) on repeat-pass TerraSAR-X (TSX) data from the summer of 2013 to detect summer thaw subsidence over the same study area. Interferometry was strongly affected by a fast phase coherence loss, atmospheric artifacts, and possibly the choice of reference point. A cumulative ground movement map, built from a continuous interferogram stack, did not reveal a subsidence on the upland but showed a distinct subsidence of up to 2 cm in most of the thermokarst basins. There, the spatial pattern of DInSAR-measured subsidence corresponded well with relative surface wetness identified with the near infra-red band of a high-resolution optical image. Our study suggests that (i) although X-band SAR has serious limitations for ground movement monitoring in permafrost landscapes, it can provide valuable information for specific environments like thermokarst basins, and (ii) due to the high sub-pixel spatial variability of ground movements, a validation scheme needs to be developed and implemented for future DInSAR studies in permafrost environments.eng
dc.language.isoengnone
dc.publisherHumboldt-Universität zu Berlin
dc.rights(CC BY 4.0) Attribution 4.0 Internationalger
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectpermafrosteng
dc.subjectthaw subsidenceeng
dc.subjectin situ measurementseng
dc.subjectDInSAReng
dc.subjectTerraSAR-Xeng
dc.subjectLena River Deltaeng
dc.subjectyedomaeng
dc.subject.ddc620 Ingenieurwissenschaften und zugeordnete Tätigkeitennone
dc.titleThaw Subsidence of a Yedoma Landscape in Northern Siberia, Measured In Situ and Estimated from TerraSAR-X Interferometrynone
dc.typearticle
dc.identifier.urnurn:nbn:de:kobv:11-110-18452/21223-5
dc.identifier.doi10.3390/rs10040494none
dc.identifier.doihttp://dx.doi.org/10.18452/20455
dc.type.versionpublishedVersionnone
local.edoc.container-titleRemote Sensingnone
local.edoc.pages27none
local.edoc.type-nameZeitschriftenartikel
local.edoc.institutionMathematisch-Naturwissenschaftliche Fakultätnone
local.edoc.container-typeperiodical
local.edoc.container-type-nameZeitschrift
local.edoc.container-publisher-nameMDPInone
local.edoc.container-publisher-placeBaselnone
local.edoc.container-volume10none
local.edoc.container-issue4none
dc.description.versionPeer Reviewednone
local.edoc.container-articlenumber494none
dc.identifier.eissn2072-4292
local.edoc.affiliationAntonova, Sofia; Periglacial Research Section, Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, 14473 Potsdam, Germany, GIScience Research Group, Institute of Geography, Heidelberg University, 69117 Heidelberg, Germany,none
local.edoc.affiliationSudhaus, Henriette; Institute of Geosciences, Christian-Albrechts-University, 24118 Kiel, Germany,none
local.edoc.affiliationStrozzi, Tazio; Gamma Remote Sensing, CH-3073 Gümligen, Switzerland,none
local.edoc.affiliationZwieback, Simon; Department of Geography, University of Guelph, Guelph, ON N1G 2W1, Canada,none
local.edoc.affiliationKääb, Andreas; Department of Geosciences, University of Oslo, 0315 Oslo, Norway,none
local.edoc.affiliationHeim, Birgit; Periglacial Research Section, Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, 14473 Potsdam, Germany,none
local.edoc.affiliationLanger, Moritz; Periglacial Research Section, Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, 14473 Potsdam, Germany, Department of Geography, Humboldt University of Berlin, 10099 Berlin, Germany,none
local.edoc.affiliationBornemann, Niko; Periglacial Research Section, Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, 14473 Potsdam, Germany,none
local.edoc.affiliationBoike, Julia; Periglacial Research Section, Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, 14473 Potsdam, Germany, Department of Geography, Humboldt University of Berlin, 10099 Berlin, Germany,none

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