Co-seismic deformation during the Mw 7.3 Aqaba earthquake (1995) from ERS-SAR interferometry

Yann Klinger (1) , R. Michel (2) , Jean-Philippe Avouac (2, 2)

1 Seismological Laboratory, California Institute of Technology
2 LDG - Laboratoire de Détection et de Géophysique (CEA)

The Mw 7.3 1995 Aqaba earthquake is the largest instrumental earthquake along the Dead Sea Fault. We complement previous seismological studies by analyzing co-seismic ground displacement from differential interferometry computed from ERS images spanning 3 different areas. They are compared with a synthetic model derived from seismological study. Only far-field deformation related to the main sub-event could be revealed because the near-field area lies within the gulf. The interferometric data imply a 56 km long and 10 km wide fault segment, connecting the Elat Deep to the Aragonese Deep, which strikes N195°E and dips 65° to the west, with 2.1 m left-lateral slip and a 15.5° rake indicating a slight normal component. The geodetic moment compares well with the seismic moment .

Domaines: Planète et Univers [physics]

Yann Klinger, R. Michel, Jean-Philippe Avouac. Co-seismic deformation during the Mw 7.3 Aqaba earthquake (1995) from ERS-SAR interferometry. Geophysical Research Letters, 2000, 27 (22), pp.3651-3654. ⟨insu-01302848⟩