مشخصات پژوهش

عنوان	تعیین زمان رسید موج p با استفاده از تبدیل موجک
نوع پژوهش	مقالات در همایش ها
کلیدواژه‌ها	p wave, arrival time, wavelet transform, Earthquake, Seismic phase, wavelet coefficients, phase picking.
چکیده	The determination of P and S waves arrival times is important for a variety of seismological applications including earthquake location and seismic tomography . Quickly detecting and accurately picking the first P wave arrivals are of great importance in event location , event identification , and source mechanism analysis , especially in the era of large volumes of digital and real-time seismic data . Manual analysis of seismograms and phase picking is time-consuming and subjective . Various techniques have been presented in the literatures for detecting and picking the arrivals of different seismic phases from single-component as well as three-component recordings . In this study the wavelet transform has been used to detect and pick the arrival of compressional phases since it is suitable for analysis of non-stationary signals in multi-scale format . In order to detect the Pwave arrival , the wavelet coefficients are calculated using the vertical component of the seismogram . In this study the P arrival time was determined by using the envelope of the wavelet coefficients and edge detection
پژوهشگران	محمد شکری کاوه (نفر اول)، سید رضا منصوری (نفر دوم)، احمد کشاورز (نفر سوم)، سارا گودرزی (نفر چهارم)