Earthquake Science

, Volume 24, Issue 2, pp 199–206

Earthquake source parameters of the 2009MW7.8 Fiordland (New Zealand) earthquake from L-band InSAR observations


DOI: 10.1007/s11589-010-0784-9

Cite this article as:
Li, Z., Qu, W., Young, K. et al. Earthq Sci (2011) 24: 199. doi:10.1007/s11589-010-0784-9


The 2009 MW7.8 Fiordland (New Zealand) earthquake is the largest to have occurred in New Zealand since the 1931 MW7.8 Hawke’s Bay earthquake, 1 000 km to the northwest. In this paper two tracks of ALOS PALSAR interferograms (one ascending and one descending) are used to determine fault geometry and slip distribution of this large earthquake. Modeling the event as dislocation in an elastic half-space suggests that the earthquake resulted from slip on a SSW-NNE orientated thrust fault that is associated with the subduction between the Pacific and Australian Plates, with oblique displacement of up to 6.3 m. This finding is consistent with the preliminary studies undertaken by the USGS using seismic data.

Key words

InSARNew Zealandearthquake source parameteruniform slip modelingdistributed slip modeling

CLC number


Copyright information

© The Seismological Society of China and Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Zhenhong Li
    • 1
  • Wei Qu
    • 2
    • 1
  • Kateline Young
    • 1
  • Qin Zhang
    • 2
  1. 1.School of Geographical and Earth SciencesUniversity of GlasgowGlasgowUK
  2. 2.College of Geology Engineering and GeomaticsChang’an UniversityXi’anChina