The interpretation of BAM fault kinematics using Envisat SAR interferometric data

ZA Perski, RF Hanssen

    Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

    1 Citation (Scopus)

    Abstract

    The surface ruptures caused by the 26 December 2003 earthquake which affected the city of Bam (Kerman province, southeast Iran) have already been mapped using interferometric coherence images from Envisat SAR images. The clearly visible traces of these structures in the coherence images allow to prove that the Bam earthquake has been caused by the displacement along a previously unknown fault. Besides the coherence, the SAR interferograms of the ascending and descending orbits present a very complex deformation pattern especially north of Bam. Similar patterns have been observed in two independent datasets (ascending and descending) avoiding misinterpretation as atmospheric errors. Interferograms and derived deformation maps allow to interpret such structures in detail as a system of possible fractures and small faults accompanying the main rupture. Geocoded interferograms allow to trace in detail the direction of these structures, while deformation maps of ascending and descending passes allow the interpretation of their relative movement. The obtained pattern together with the structures mapped from the coherence images gives an opportunity to reconstruct the kinematics of the entire "Bam structure" and find its relation to the kinematics of the major intra-continental strike-slip system of the Gowk fault.
    Original languageEnglish
    Title of host publicationProceedings of Fringe 2005 Workshop, 28 November - 2 December 2005, Frascati, Italy
    Editors H. Lacoste
    Place of PublicationNoordwijk
    PublisherESA Publications Division
    Number of pages5
    Volume610
    ISBN (Print)92-9092-921-9
    Publication statusPublished - 2006
    EventFringe 2005 Workshop - Noordwijk, Frascati, Italy
    Duration: 28 Nov 20052 Dec 2005

    Publication series

    Name
    PublisherESA Publications Division

    Conference

    ConferenceFringe 2005 Workshop
    CountryItaly
    CityFrascati
    Period28/11/052/12/05

    Bibliographical note

    Conference in 2005, paper uitgegeven in 2006.

    Keywords

    • conference contrib. refereed
    • Conf.proc. > 3 pag

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