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New kinematic constraints of the western Doruneh fault, north-eastern Iran, from interseismic deformation analysis
Author(s)
Language
English
Obiettivo Specifico
1.10. TTC - Telerilevamento
3.2. Tettonica attiva
Status
Published
JCR Journal
JCR Journal
Peer review journal
Yes
Title of the book
Issue/vol(year)
1/190(2012)
ISSN
0956-540X
Electronic ISSN
1365-246X
Publisher
Wiley-Blackwell
Pages (printed)
622-628
Issued date
May 21, 2012
Alternative Location
Subjects
Keywords
Abstract
We used the SBAS DInSAR analysis technique to estimate the interseismic deformation along
the western part of the Doruneh fault system (DFS), northeastern Iran. We processed 90
ENVISAT images from four different frames from ascending and descending orbits. Three of
the ground velocity maps show a significant interseismic signal. Using a simple dislocation
approach we model 2-D velocity profiles concerning three InSAR data set relative to the
western part of the DFS, obtaining a good fit to the observations. The resulting model indicates
that a slip rate of ∼5mmyr−1 accumulates on the fault below 10 km depth, and that in its
western sector the Doruneh fault is not purely strike-slip (left-lateral) as in its central part,
but shows a significant thrust component. Based on published geological observations, and
assuming that all interseismic deformation is recovered with a single event, we can estimate a
characteristic recurrence interval between 630 and 1400 yr.
the western part of the Doruneh fault system (DFS), northeastern Iran. We processed 90
ENVISAT images from four different frames from ascending and descending orbits. Three of
the ground velocity maps show a significant interseismic signal. Using a simple dislocation
approach we model 2-D velocity profiles concerning three InSAR data set relative to the
western part of the DFS, obtaining a good fit to the observations. The resulting model indicates
that a slip rate of ∼5mmyr−1 accumulates on the fault below 10 km depth, and that in its
western sector the Doruneh fault is not purely strike-slip (left-lateral) as in its central part,
but shows a significant thrust component. Based on published geological observations, and
assuming that all interseismic deformation is recovered with a single event, we can estimate a
characteristic recurrence interval between 630 and 1400 yr.
References
Pezzo, G., Tolomei, C., Atzori, S., Salvi, S., Shabanian, E., Bellier, O. and Farbod, Y. (2012), New kinematic constraints of the western Doruneh fault, northeastern Iran, from interseismic deformation analysis. Geophysical Journal International, 190: 622–628. doi: 10.1111/j.1365-246X.2012.05509.x
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