Authors / CoAuthors
Gold, R.D.. | Clark, D. | Barnhart, W.D. | King, T.R. | Quigley, M. | Briggs, R.W.
Abstract
This investigation uses high-resolution optical satellite imagery to quantify vertical surface offsets associated with the intraplate 20 May 2016 Mw 6.0 Petermann Ranges earthquake, Northern Territory, Australia. The ~20 km long NW-trending rupture resulted from reverse motion on a northeast-dipping fault. We measure vertical surface offsets by differencing pre- and post-earthquake digital elevation models (DEMs) derived from in-track stereo Worldview images. This analysis resolves a maximum vertical deformation of 0.8 ? 0.2 m. We validate these results via comparison to field-based observations and interferometric synthetic aperture radar (InSAR). This new method may be particularly useful for remote characterization of earthquake ruptures with larger (>1 m) vertical deformation, where near-rupture InSAR observations are often compromised by decorrelation.
Product Type
document
eCat Id
128662
Contact for the resource
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
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Keywords
- theme.ANZRC Fields of Research.rdf
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- Natural HazardsEARTH SCIENCES
- ( Process )
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- earthquake
- ( Process )
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- intraplate earthquake
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- slip distribution
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- stable continental region
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- WorldView
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- InSAR
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- Published_External
Publication Date
2020-08-26T06:57:21
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completed
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External publication
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geoscientificInformation
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Extents
[-44.00, -9.00, 112.00, 154.00]
Reference System
Spatial Resolution
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