2011 11 March 05:46:23 UTC
Preliminary Slip model of the
Mw9 Tohoku Honshu Japan Earthquake
The magnitude 9.0 Tohoku earthquake on March 11, 2011, which occurred
near the northeast coast of Honshu, Japan, resulted from thrust faulting
on or near the subduction zone plate boundary between the Pacific and
The location, depth, and focal mechanism of the March 11 earthquake are
consistent with the event having occurred on the subduction zone plate
boundary. Modeling of the rupture of this earthquake indicate that the
fault moved upwards of at least 20 m, and slipped over an area
approximately 300 km long (along-strike) by 170 km wide (in the down-dip
direction). The teleseismic inversion revealed a complicate rupture
process with maximum slip close to 33 m. The map showing the projection of the slip and
the synthetic peak ground displacement map show that parts of the
coastal zone were up-lifted more than 1 m result which is also shown by
by Agalos A. email: email@example.com, firstname.lastname@example.org
Teleseismic Bodywave Modeling
by Alexandra Moshou email: email@example.com
Focal Mechanism Solutions of Honshu
With Yellow Circle the earthquake's epicenter
Focal Mechanism Solution Retrieved
from Teleseismic Bodywave Modeling
Stations at teleseismic distances whose
were used in the slip inversion
Slip model calculated from
Horizontal Projection of the Slip
(plotted using Google maps)
Synthetic PGV and PGD Maps based on the
calculated Slip model
1) Agalos A., Papadimitriou P., Makropoulos K., 2008.
Rupture Histories of Strong Earthquakes. 31st General
Assembly of the European Seismological Commission, held at the
Conference Center, Hersonissos, Crete Greece, Book of Short papers, p
2) Bouchon Michel, 1981. A simple method to calculate Green s functions
for elastic layered media. BSSA, 71, 4, 959-971.
3) 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.
4) Mendoza C. and Hartzell S., 1999. Fault-slip distribution of the 1995
Colima-Jalisco, Mexico,Earthquake. BSSA, 89, 5, 1338-1344.
5) Wessel, P. and W. H. F. Smith., 1991. Free software
helps map and display data, EOS Trans. AGU, 72, 441.
6) Moshou A., Papadimitriou P. and
Makropoulos K.,2007. Teleseismic Body Wave Inversion. Proceedings of the
11th International Congress Athens, May 2007
7) Moshou A., Papadimitriou P.,
Makropoulos K., 2008. Waveform Inversion using Teleseismic and Regional
Data for Earthquakes that Occurred in Greece. 31st General Assembly of
Seismological Commission, held
at the Creta Maris Conference Center, Hersonissos, Crete Greece, Book of
abstracts, p 95.
GDSN Waveforms downloaded from Iris.