نتایج جستجو برای: ensemble earthquake records

تعداد نتایج: 199700  

شاکری, کاظم, علیزاده, قربان, محبی, محتشم,

Since there is no closed-form formula for designing TMD (Tuned Mass Damper) for nonlinear structures, some researchers have proposed numerical optimization procedures such as a genetic algorithm to obtain the optimal values of TMD parameters for nonlinear structures. These methods are based on determining the optimal values of TMD parameters to minimize the maximum response (e.g. inter story dr...

2002
F. Vallianatos

Earlier work by the authors (Vallianatos and Tzanis, 1999b), has proposed a model for the propagation and scaling of electric earthquake precursors, according to which the pre-seismic electric field emission is due to some time dependent polarisation appearing in an ensemble of electrified crustal volumes within the seismogenic source, which are distributed according to a fractal power law. Her...

2016
Paola Albini Andrea Rovida

On Wednesday 6 April 1667, an earthquake occurred, and severely affected a large area of the eastern coast of the Adriatic Sea, also known as southern Dalmatia, in today Croatia, and part of Montenegro. This paper summarizes the seismological data existing today on this large earthquake, with special attention to how such data were gathered by means of investigating hitherto not considered hist...

2013
Tatsuo Aoki Jun Takahashi Yoshihiro Fukumoto Satoshi Yasuda Kenta Ito Kanichi Inoue Tatsuya Komaru Yoshiaki Katahira Atsushi Obata Tetsuya Hiramoto Hiroyasu Sukegawa Kazunori Ogata Hiroaki Shimokawa

e examined ambulance records from Miyagi prefecture and reported that the occurrence of cardiovascular diseases (CVDs), including heart failure (HF), acute coronary syndrome (ACS), stroke, and cardiopulmonary arrest, had increased after the Great East Japan Earthquake (magnitude 9.0 on March 11, 2011).1 However, because the ambulance records were made in the emergency rooms by doctors who were ...

Journal: :Zisin (Journal of the Seismological Society of Japan. 2nd ser.) 1967

2005
STEPHEN H. HARTZELL THOMAS H. HEATON

Near-source strong motion velocity records and teleseismic short-period P waveforms are modeled to obtain the spatial and temporal distribution of slip for the 1984 Morgan Hill earthquake. Both forward modeling and constrained, leastsquares inversion techniques are used to interpret the strong motion velocity waveforms in the frequency range of approximately 0.2 to 2.0 Hz. These data support a ...

2009
Juliet Biggs David P. Robinson Timothy H. Dixon

S U M M A R Y We investigate the 2007 Pisco, Peru, earthquake (M8.0) using seismological and geodetic data. Analysis of teleseismic records indicates that the earthquake is characterized by a steadily increasing moment rate, with the maximum occurring between about 55 and 70 s and the associated slip occurring about 40 km south of the epicentre. We combine InSAR data from L-band (ALOS) and C-ba...

Journal: :تحقیقات جغرافیایی 0
روح اله قانعی بافقی عضو هیأت علمی دانشگاه یزد صفر قائدرحمتی دانشگاه یزد

tehran as the biggest metropolitan of iran is located in the areas that are at high-risk of earthquake. what increases tehran's vulnerability toward earthquake is the urban physical expansion in vaious dimensions. since the analysis of the mentioned expansion is a solution to many urban problems, the effects of tehran expansion in increasing vulnerability to earthquake has been surveyed in...

Journal: :زمین شناسی مهندسی 0
علی قنبری ali ghanbari دانشگاه خوارزمی محسن معجزی mohsen mojezi میثم فدایی meysam fadaee

construction of asphaltic core dams is a relatively novel method especially in iran. iran is located in a region with high seismicity risk. therefore, many researchers have focused on the behavior of such types of dams under earthquake loading. in this research, the behavior of asphaltic core rockfill dams (acrd) has been studied under earthquake loading using nonlinear dynamic analysis method ...

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