این سایت در حال حاضر پشتیبانی نمی شود و امکان دارد داده های نشریات بروز نباشند
فیزیک زمین و فضا، جلد ۴۴، شماره ۴، صفحات ۷۳-۸۵
عنوان فارسی Attenuation of spatial aliasing in CMP domain by non-linear interpolation of seismic data along local slopes
چکیده فارسی مقاله Spatial aliasing is an unwanted side effect that produces artifacts during seismic data processing, imaging and interpolation. It is often caused by insufficient spatial sampling of seismic data and often happens in CMP (Common Mid-Point) gather. To tackle this artifact, several techniques have been developed in time-space domain as well as frequency domain such as frequency-wavenumber, frequency-space, and frequency-time. The main advantages of seismic interpolation in time-space domain over frequency domain are: a) frequency components of the initial signals are preserved, and b) the prior knowledge that a seismic event consists of many plane wave segments, can be used. Using the later advantage, a seismic event can be predicted by pursuing the continuity of seismic events in a trace-by-trace manner. This process, which has become popular in seismic data reconstruction and imaging within the past few years, is known as predictive painting. We use predictive painting to predict the wavefronts and two-way-travel time curves in regularly sampled CMP gathers followed by increasing the number of traces by cubic interpolation. Then, the amplitude of the interpolated trace is obtained by averaging the amplitudes of the neighbouring traces. Performance of the proposed method is demonstrated on several synthetic seismic data examples as well as a field data set.
کلیدواژه‌های فارسی مقاله Spatial aliasing، interpolation، time-space، local slope، predictive painting،
عنوان انگلیسی Attenuation of spatial aliasing in CMP domain by non-linear interpolation of seismic data along local slopes
چکیده انگلیسی مقاله Spatial aliasing is an unwanted side effect that produces artifacts during seismic data processing, imaging and interpolation. It is often caused by insufficient spatial sampling of seismic data and often happens in CMP (Common Mid-Point) gather. To tackle this artifact, several techniques have been developed in time-space domain as well as frequency domain such as frequency-wavenumber, frequency-space, and frequency-time. The main advantages of seismic interpolation in time-space domain over frequency domain are: a) frequency components of the initial signals are preserved, and b) the prior knowledge that a seismic event consists of many plane wave segments, can be used. Using the later advantage, a seismic event can be predicted by pursuing the continuity of seismic events in a trace-by-trace manner. This process, which has become popular in seismic data reconstruction and imaging within the past few years, is known as predictive painting. We use predictive painting to predict the wavefronts and two-way-travel time curves in regularly sampled CMP gathers followed by increasing the number of traces by cubic interpolation. Then, the amplitude of the interpolated trace is obtained by averaging the amplitudes of the neighbouring traces. Performance of the proposed method is demonstrated on several synthetic seismic data examples as well as a field data set.
کلیدواژه‌های انگلیسی مقاله Spatial aliasing, interpolation, time-space, local slope, predictive painting
نویسندگان مقاله Mohammad Javad Khoshnavaz |
Post-Doc, Department of Earth Physics, Institute of Geophysics, University of Tehran, Iran

Hamid Reza Siahkoohi |
Professor, Department of Earth Physics, Institute of Geophysics, University of Tehran, Iran

Andrej Bóna |
Professor, Department of Exploration Geophysics, Curtin University of Technology, Perth, Western Australia

نشانی اینترنتی https://jesphys.ut.ac.ir/article_67749_dc6c6dbbc2c8aa9d2734cc830934f465.pdf
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/1035/article-1035-1174394.pdf
کد مقاله (doi)
زبان مقاله منتشر شده fa
موضوعات مقاله منتشر شده
نوع مقاله منتشر شده
برگشت به: صفحه اول پایگاه   |   نسخه مرتبط   |   نشریه مرتبط   |   فهرست نشریات