نتایج جستجو برای: teleseismic signal

تعداد نتایج: 419298  

2003
A. M. READING B. L. N. KENNETT M. C. DENTITH

The deep crustal and upper mantle structure of the Yilgarn Craton is investigated in this study using receiver-function analysis of teleseismic earthquake records from temporary stations. Two lines of stations were deployed, the main transect ran between Perth and Kalgoorlie, and a second line of stations ran across the east Yilgarn Craton 200 km to the north of Kalgoorlie. The broadband instru...

2005
STEPHEN H. HARTZELL THOMAS H. HEATON

A least-squares point-by-point inversion of strong ground motion and teleseismic body waves is used to infer the fault rupture history of the 1979 Imperial Valley, California, earthquake. The Imperial fault is represented by a plane embedded in a half-space where the elastic properties vary with depth. The inversion yields both the spatial and temporal variations in dislocation on the fault pla...

Journal: :فیزیک زمین و فضا 0
نرگس افسری استادیار، گروه مهندسی عمران، دانشگاه آزاد اسلامی، واحد نوشهر، ایران فتانه تقی زاده فرهمند استادیار، گروه فیزیک، دانشگاه آزاد اسلامی، واحد قم، ایران محمدرضا قیطانچی استاد، گروه فیزیک زمین، موسسه ژئوفیزیک دانشگاه تهران، ایران اعظم سلیمانی کارشناس ارشد زلزله شناسی، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران، ایران

study crust and upper mantle structure below the surface of earth is one of the important objectives of geophysics. teleseismic body waveforms have been used to infer crust and upper mantel structure. the iranian plateau is part of the alpine-himalayan orogenic belt. the zagros mountain belt in southwestern iran has resulted from the collision of arabian plate with the continental crust of cent...

2010
R. T. Lacoss G. T. Kuster R. T. LACOSS G. T. KUSTER

A stochastic model has been proposed to characterize the teleseismic short period P-wave signal variations observed within a Large Aperture Seismic Array (LASA). The model asserts that, in the frequency domain, the received signal is equal to some average signal multiplied by a random gain and phase. Within a Montana LASA subarray the mean value of the modulus squared of the random term can be ...

Journal: :Journal of the Meteorological Society of Japan. Ser. II 1926

Journal: :Geophysical Journal International 1993

Journal: :Geophysical Journal International 1999

2005
David J. Wald Thomas H. Heaton K. W. Hudnut

We present a rupture model of the Northridge earthquake, determined from the joint inversion of near-source strong ground motion recordings, P and SH teleseismic body waves, Global Positioning System (GPS) displacement vectors, and permanent uplift measured along leveling lines. The fault is defined to strike 122 ° and dip 40 ° to the south-southwest. The average rake vector is determined to be...

2005
JOHN BOATWRIGHT

The analysis of the Nahanni earthquakes of October 5, 1985 (Ms 6.6), and December 23, 1985 (Ms 6.9), will have important implications for the assessment of seismic hazards in intraplate environments. To maximize the information available to seismic engineers, broadband data recorded teleseismically are analyzed jointly with strong-motion data recorded in the near field. The timedomain analysis ...

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