SOME OF THE RESULTS OF EARTHQUAKE FOCAL MECHANISM INVESTIGATIONS ON THE TERRITORY OF ARMENIA

سال انتشار: 1374
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 85

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شناسه ملی سند علمی:

SEE02_156

تاریخ نمایه سازی: 11 مهر 1400

چکیده مقاله:

The present work describes the results of the earthquake focal mechanism investigations on the territory of Armenia. The calculations are done through the programme made by S. Yunga, the Institute of the Earth's Physics Russian Acagamy of Sciences. The focal mechanisms of ۱۶ earthquakes, Occured in ۱۹۹۲ are determined. The kinds of faulting in the earthquake foci are analysed in detail. The focal mechanisms are determined confidentally based on the first arrival of P and S waves from short period recordings and are compared with assumed rupture disturbances in the Earth's crusl.The strong earthquake focal mechanisms are mainly determined by the regional stress field. A predominant near-meridional direction of compression stress axes are observed which may be explained by the situation of the Armenian Upland in the collision zone of the Arabian and Eurasian plates.

نویسندگان

achkhen k. tovmassian

Leading researcher, National Survey of Seismic Protection,Yerevan, Armenia

avetis r. arakelian

Candidate of Sciences, National Survey of Seismic Protection,Yerevan, Armenia

rafael s. haoutiunian

Leading researcher, National Survey of Seismic Protection,Yerevan, Armenia

maria a. danilova

Candidate of Sciences, Joint Institute of the Earth's Physics,Moscow, Russia