MAGNITUDE SCALE IN THE TABRIZ SEISMIC NETWORK

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REZAPOUR M.

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ISSN: 2588-4824

Journal Paper

Paper Information

Journal: Journal of the Earth and Space Physics Year:2005 | Volume:31 | Issue:1 Page(s): 13-21

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Title

MAGNITUDE SCALE IN THE TABRIZ SEISMIC NETWORK

Author(s)

REZAPOUR M. | Issue Writer Certificate

Keywords

SEISMIC NETWORKQ3

MAGNITUDEQ3

DATABASEQ4

TABRIZQ4

Abstract

To record local earthquakes, the telemetric-digital SEISMIC NETWORK of the TABRIZ comprising of eight three component seismic stations was installed in the north-west of Iran. This array started operation at the end of 1995. Investigation of archived data in the TABRIZ SEISMIC NETWORK between 1999 to September 2004 shows that MAGNITUDE values in the DATABASE have not been determined using a single formula or a specific method. Comparison of MAGNITUDE values in the DATABASE with those values that have been published in the ISC/NEIC bulletin shows that MAGNITUDE values calculated in the TABRIZ network are underestimated for events occurred in greater distances. By using MAGNITUDE values in the DATABASE and corresponding mb ISC/NEIC (mb ISC or mbNEIC) values, a scale as M=log (v/4π)+2.6log (Δ)-2.2 is derived for determination of the MAGNITUDE in distance range of 170 to 1000 km, where v is peak-to-peak amplitude in micrometer/second and Δ is epicentral distance in kilometers. This formula gives a better estimate for the MAGNITUDE of events in comparison with the formula that is presently used in the TABRIZ SEISMIC NETWORK.

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APA: Copy

REZAPOUR, M.. (2005). MAGNITUDE SCALE IN THE TABRIZ SEISMIC NETWORK. JOURNAL OF THE EARTH AND SPACE PHYSICS, 31(1), 13-21. SID. https://sid.ir/paper/382059/en

Vancouver: Copy

REZAPOUR M.. MAGNITUDE SCALE IN THE TABRIZ SEISMIC NETWORK. JOURNAL OF THE EARTH AND SPACE PHYSICS[Internet]. 2005;31(1):13-21. Available from: https://sid.ir/paper/382059/en

IEEE: Copy

M. REZAPOUR, “MAGNITUDE SCALE IN THE TABRIZ SEISMIC NETWORK,” JOURNAL OF THE EARTH AND SPACE PHYSICS, vol. 31, no. 1, pp. 13–21, 2005, [Online]. Available: https://sid.ir/paper/382059/en

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