SEISMIC ENERGY RELEASED IN IRAN

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TAHERNIA NADIA; GHEITANCHI M.R.

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Seminar Paper

Paper Information

Seminar: IRANIAN GEOPHYSICS CONFERENCE
Year:2006 | Issue:12

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Title

SEISMIC ENERGY RELEASED IN IRAN

Author(s)

TAHERNIA NADIA | GHEITANCHI M.R.

Keywords

Not Registered.

Abstract

THE HYPOCENTERS OF ABOUT 3735 EARTHQUAKES RECORDED BY GLOBAL SEISMIC STATIONS DURING THE LAST 40 YEARS WERE ANALYZED. THE REGION OF STUDY WAS DIVIDED INTO SUB SQUARES OF EACH 0.5´0.5 DEGREE. THE ENERGY RELEASED FOR EACH EARTHQUAKE WAS EVALUATED FROM ENERGY MAGNITUDE RELATION AND THE ENERGY OF EARTHQUAKES IN EACH SQUARE FOR EACH TIME INTERVAL WERE SUM UP AND THE MAPS OF SEISMIC ENERGY RELEASED IN 4 TIME INTERVALS OF 10 YEARS BETWEEN 1965 AND 2004 AND 1 TIME INTERVAL FOR THE PAST 40 YEARS WERE PROVIDED AND OVER LAPPED ON THE FAULT MAP. THE TIME- FREQUENCY AND MAGNITUDE- FREQUENCY DIAGRAMS FOR IRAN WERE PROVIDED. THE GRAPH OF ACCUMULATED ENERGY RELEASED IN 5 YEARS INTERVALS FROM 1964 TO 2004 FOR ACTIVE ZONES IN IRAN WERE CALCULATED. AS EXPECTED, THE RATE OF SEISMIC ENERGY IN ZAGROS IS LARGER THAN OTHER PARTS OF IRAN. THE RESULT INDICATED THAT THE MOST PARTS OF IRANIAN PLATEAU WERE SEISMICALLY ACTIVE DURING THE PAST 40 YEARS. ALBORZ AND LUT REGIONS WERE SEISMICALLY ACTIVE, CHARACTERIZED BY SIGNIFICANT EARTHQUAKES. ZAGROS HAD A MORE REGULAR PATTERN OF SEISMIC ACTIVITY AND EXPERIENCED MODERATE AND SMALL EARTHQUAKES. THE DIFFERENT SEISMIC PATTERNS SUGGEST THAT THE PHYSICAL PROPERTIES OF FAULT SYSTEMS ARE DIFFERENT IN DIFFERENT REGIONS AND THE CRUST IS INHOMOGENEOUS IN IRANIAN PLATEAU. THE COMPARISON OF SEISMIC ENERGY MAPS INDICATES THAT THE SEISMIC GAPS IN EARLY INTERVALS WERE FILLED UP BY THE SEISMIC ACTIVITIES DURING THE FOLLOWING TIME INTERVALS.

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APA: Copy

TAHERNIA, NADIA, & GHEITANCHI, M.R.. (2006). SEISMIC ENERGY RELEASED IN IRAN. IRANIAN GEOPHYSICS CONFERENCE. SID. https://sid.ir/paper/906525/en

Vancouver: Copy

TAHERNIA NADIA, GHEITANCHI M.R.. SEISMIC ENERGY RELEASED IN IRAN. 2006. Available from: https://sid.ir/paper/906525/en

IEEE: Copy

NADIA TAHERNIA, and M.R. GHEITANCHI, “SEISMIC ENERGY RELEASED IN IRAN,” presented at the IRANIAN GEOPHYSICS CONFERENCE. 2006, [Online]. Available: https://sid.ir/paper/906525/en

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