The 1 October 1995 Dinar earthquake

3d image of the Dinar Fault and interferogram
click for larger image

(Top) 3-D perspective view looking NW along the Dinar-Civril normal fault, which moved in an earthquake of M= 6.1 in 1995. The view is a LANDSAT TM image draped over a digital elevation model generated using tandem radar images. The 1995 earthquake ruptured ~10 km of the fault along the base of the escarpment, marked by a red line, and downthrown to the SW (left). Thin coloured lines are digitized outlines of the colour fringes shown below: the width of the fringe pattern in the hanging wall is about 13 km.
(Bottom) An interferogram made from SAR images before and after the Dinar earthquake, draped over the digital topography. Again the 1995 fault rupture is marked by a red line. Each fringe in the interferogram corresponds to a 28 mm change in the line-of-sight distance to the satellite, in this case about 23 degrees to the vertical. In the hanging wall (left) there are 21 fringes, indicating a maximum line-of-sight downthrown displacement of 590  mm. Only three upthrown fringes (80 mm) occur in the footwall (right) side of the fault. Dislocation modelling and analysis of the seismic waveforms show that the fault dipped at ~45 degrees to the SW and slipped to a depth of ~8 km.

For full details please refer to:

Wright, T.J., B. Parsons, J. Jackson, M. Haynes, E. Fielding, P. England, P. Clarke, Source parameters of the 1 October 1995 Dinar (Turkey) earthquake from SAR interferometry and seismic bodywave modelling, Earth Planet. Sci. Lett., 172, 23-37, 1999 [Abstract, PDF reprint, 2.3 MB]