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Surface strain rates and crevassing of Campbell Glacier Tongue in East Antarctica analysed by tide-corrected DInSAR
- Source :
- Remote Sensing Letters. 8:330-339
- Publication Year :
- 2016
- Publisher :
- Informa UK Limited, 2016.
-
Abstract
- This research presents the measurement of surface strain rates over Campbell Glacier Tongue (CGT) in East Antarctica from tide-corrected ice velocity derived by removing the vertical tidal deflection from the 14 COSMO-SkyMed 1-day differential interferometric synthetic aperture radar images obtained in 2011. The hinge zone of CGT shows large longitudinal, transverse, shear, and vertical strain rates, especially in a heavy crevassing band, while the freely floating zone shows very small strain rates. This represents that the surface deformation by ice flow in the hinge zone is significantly larger than that in the freely floating zone. The orientations of crevasses in the hinge zone agree reasonably well with the directions orthogonal to the axes of the most tensile strain rates calculated from the tide-corrected ice velocity, which demonstrates that the crevassing is attributed to the gravitational ice flow rather than to the tidal flexure.
- Subjects :
- 010504 meteorology & atmospheric sciences
Ice stream
0211 other engineering and technologies
Hinge
East antarctica
02 engineering and technology
Geodesy
01 natural sciences
Physics::Geophysics
Transverse plane
Shear (geology)
Deflection (engineering)
Interferometric synthetic aperture radar
Earth and Planetary Sciences (miscellaneous)
Astrophysics::Earth and Planetary Astrophysics
Electrical and Electronic Engineering
Glacier tongue
Physics::Atmospheric and Oceanic Physics
Geology
021101 geological & geomatics engineering
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 21507058 and 2150704X
- Volume :
- 8
- Database :
- OpenAIRE
- Journal :
- Remote Sensing Letters
- Accession number :
- edsair.doi...........601f2f5fb5d8e73fb48ffe937e20e5cd