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Surface rupture and distributed deformation revealed by optical satellite imagery: The intraplate 2016 Mw 6.0 Petermann Ranges earthquake, Australia  


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

Commonwealth of Australia (Geoscience Australia)  
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia

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Keywords

theme.ANZRC Fields of Research.rdf
  • Natural HazardsEARTH SCIENCES
( Process )
  • earthquake
( Process )
  • intraplate earthquake
  • slip distribution
  • stable continental region
  • WorldView
  • InSAR
  • Published_External

Publication Date

2020-08-26T06:57:21

Creation Date

Security Constraints

Australian Government Security ClassificationSystem    

Classification - unclassified

Legal Constraints

Creative Commons Attribution 4.0 International Licence    

Access - license

Use - license

Status

completed

Purpose

External publication

Maintenance Information

notPlanned

Topic Category

geoscientificInformation

Series Information

Lineage

Not supplied.

Parent Information

Extents

[-44.00, -9.00, 112.00, 154.00]

Reference System

Spatial Resolution

Service Information

Associations

Downloads and Links

Link to article  

Source Information



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