Authors / CoAuthors
Gold, R.D.. | Clark, D.J. | Barnhart, W.D. | King, T.R. | Quigley, M. | Briggs, R.W.
Abstract
High‐resolution optical satellite imagery is used to quantify vertical surface deformation associated with the intraplate 20 May 2016 Mw 6.0 Petermann Ranges earthquake, Northern Territory, Australia. The 21 ± 1‐km‐long NW trending rupture resulted from reverse motion on a northeast dipping fault. Vertical surface offsets of up to 0.7 ± 0.1m distributed across a 0.5‐to‐1‐km‐wide deformation zone are measured using the Iterative Closest Point algorithm to compare preearthquake and postearthquake digital elevation models derived from WorldView imagery. The results are validated by comparison with field‐based observations and interferometric synthetic aperture radar. The pattern of surface uplift is consistent with distributed shear above the propagating tip of a reverse fault, leading to both an emergent fault and folding proximal to the rupture. This study demonstrates the potential for quantifying modest (<1 m) vertical deformation on a reverse fault using optical satellite imagery.
Product Type
document
eCat Id
144169
Contact for the resource
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Point of contact
Resource provider
Keywords
- theme.ANZRC Fields of Research.rdf
-
- EARTH SCIENCES
- ( Theme )
-
- Intraplate earthquake
- ( Theme )
-
- earthquake hazard
- ( Theme )
-
- InSAR
-
- Published_External
Publication Date
Creation Date
Security Constraints
Legal Constraints
Status
accepted
Purpose
External Publication
Maintenance Information
notPlanned
Topic Category
geoscientificInformation
Series Information
Lineage
Parent Information
Extents
[-44.00, -9.00, 112.00, 154.00]
Reference System
Spatial Resolution
Service Information
Associations
Source Information