A strong earthquake of magnitude Mw=6.9 occurred in Japan, eastern Honshu on 13 June 2008
(23:43 GMT). The focal mechanism solution showed thrust type faulting. The ruptured fault dips
west and has a SW-NE direction, 11 people killed and nearly 300 injured.
The teleseismic Stations whose data were used in the inversion
and the focal mechanism of the earthquake
Teleseismic Modeling of P and SH waves
Teleseismic Modeling of P and SH waves for slip
Velocity model using Crust2 (Bassin et al., 2000)
Slip Distribution
Quick Magnitude Estimation using duration of High Frequency energy radiation of
Teleseicmic P waves combined with maximum Displacement amplitudes
Estimated magnitude M=6.9 based on the formula of Hara T., 2007
Slip modeled by Agalos A. email: aagalos@geol.uoa.gr
Earthquake modeled by Alexandra Moshou email: amoshou@geol.uoa.gr
References
Agalos A., Papadimitriou P., Makropoulos K., 2008. Rupture Histories of Strong Earthquakes.
31st General Assembly of the European Seismological Commission, held at the Creta Maris
Conference Center, Hersonissos, Crete Greece, Book of Short papers, p 9-16.
Bassin, C., Laske, G. and Masters, G., 2000. The Current Limits of Resolution for Surface Wave Tomography
in North America, EOS Trans AGU, 81, F897.
Hara, T., Measurement of duration of high-frequency energy radiation and its application to determination of
magnitudes of large shallow earthquakes, Earth Planets Space, 59, 227-231, 2007a.
Hara, T., Magnitude determination using duration of high frequency energy radiation and displacement amplitude:
application to tsunami earthquakes, Earth Planets Space, 59, 561-565, 2007b.
Hartzell S. H., and Heaton T. H., 1983. Inversion of strong ground motion and teleseismic waveform
data for the fault rupture history of the 1979 Imperial Valley, California, earthquake. BSSA, 73, 1553_1583.
Moshou A., Papadimitriou P., Makropoulos K., 2008. Waveform Inversion using Teleseismic and
Regional Data for Earthquakes that Occurred in Greece. 31st General Assembly of the European
Seismological Commission, held at the Creta Maris Conference Center, Hersonissos, Crete Greece,
Book of abstracts, p 95.
Wessel, P. and W. H. F. Smith., 1991. Free software helps map and display data, EOS Trans. AGU, 72, 441.
