Application of P-wave Mwp magnitude to earthquakes for tsunami early warning in and around South-Western Turkey
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Tsunami warning centres inform the population who are located near and around coastal areas by determining the size and location of an earthquake. The Pacific Tsunami Early Warning System has used P-wave moment magnitude (Mwp) for the warning system for many years. A moment magnitude determination from the P-wave arrivals has the advantage of estimating the size of an earthquake within a couple of minutes, compared to other estimation procedures. The Eastern Mediterranean region is tectonically active area and has experienced many tsunami earthquakes in history. In this paper, the moment magnitude determination technique was used to calculate the moment magnitudes of events that occurred in the Eastern Mediterranean and near the coasts of Turkey with magnitudes between 5.5 and 6.8 and epicentral distance between about 100 and 1700 km. Mwp was calculated using seismic stations that were installed in the area and the number of stations used changed event by event. Their numbers were in the range of 11 to 71. Calculated Mwp values showed good compatibility with Global Centroid Moment Tensor Mw. The results of this study are encouraging for the early warning system that will be set up in the near future in the region.
KeywordsP-wave moment magnitude rapid seismic repor
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- Fokaefs A. and Papadopoulos G., 2005. Historical earthquakes and tsunami sources in Eastern Mediterranean Sea. Geophys. Res. Abs., 7, 00732.Google Scholar
- Goldstein P., Dodge D., Firpo M. and Minner L., 2003. SAC2000: Signal processing and analysis tools for seismologists and engineers. In: Lee W.H.K., Kanamori H., Jennings P.C. and Kisslinger C. (Eds), International Handbook of Earthquake and Engineering Seismology. International Geophysics, 81, Part B, 1613–1614.CrossRefGoogle Scholar
- McClusky S., Balassanian S., Barka A., Demir C., Ergintav S., Georgiev I., Gürkan O., Hamburger M., Hurst K., Kahle H., Kastens K., Kekelidze G., King R., Kotzev V., Lenk O., Mahmoud S., Mishin A., Nadariya M., Ouzounis A., Paradissis D., Peter Y., Prilepin M., Reilinger R., Sanli I., Seeger H., Tealeb, A., Toksöz M.N. and Veis G., 2000. Global positioning system constraints on plate kinematics and dynamics in the eastern Mediterranean and Caucasus. J. Geophys. Res., 105, 695–719.Google Scholar
- Tinti S., Armigliato A., Pagnoni G. and Zaniboni F., 2005. Scenarios of giant tsunamis of tectonic origin in the Mediterranean. ISET J. Earthq. Technol., 42, 171–188.Google Scholar
- Tsuboi S., Abe K., Takano K. and Yamanaka Y., 1995. Rapid determination of Mw from broadband P waveforms. Bull. Seismol. Soc. Amer., 83, 606–613.Google Scholar
- Tsuboi S., Whitmore P. M. and Sokolowski T.J., 1999. Application of Mwp to deep and teleseismic earthquakes. Bull. Seismol. Soc. Amer., 89, 1345–1351.Google Scholar
- Whitmore P.M., Tsuboi S., Hirshorn B. and Sokolowski T.J., 2002. Magnitude dependent correction for Mwp. Sci. Tsunami Hazards, 20, 187–192.Google Scholar