کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4740093 1641140 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A robust method for analyzing the instantaneous attributes of seismic data: The instantaneous frequency estimation based on ensemble empirical mode decomposition
ترجمه فارسی عنوان
یک روش قوی برای تجزیه و تحلیل ویژگی های لحظه ای داده های لرزه ای: برآورد فرکانس لحظه ای بر اساس تجزیه حالت تجربی گروهی
کلمات کلیدی
گروه تقسیم حالت تجربی، فرکانس لحظه ای، مخلوط کردن حالت، ضخامت ورقه
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فیزیک زمین (ژئو فیزیک)
چکیده انگلیسی


• Mode mixture caused by random noise is more severe in conventional EMD.
• Mode mixture becomes weakened in EEMD.
• EEMD based instantaneous frequency is more robust to thickness variation.

The Hilbert–Huang transform (HHT) includes two procedures. First, empirical mode decomposition (EMD) is used to decompose signals into several intrinsic mode functions (IMFs) before the Hilbert transform (HT) of these IMFs are calculated. Compared to the conventional Hilbert transform (HT), HHT is more sensitive to thickness variations of seismic beds. However, random noise in seismic signal may cause the mixture of the modes from HHT. The recent ensemble empirical mode decomposition (EEMD) presents the advantages in decreasing mode mixture and has the promising potential in seismic signal analysis. Currently, EEMD is mainly used in seismic spectral decomposition and noise attenuation. We extend the application of EEMD based instantaneous frequency to the analysis of bed thickness. The tests on complex Marmousi2 model and a 2D field data show that EEMD is more effective in weakening mode mixtures contained in the IMFs, compared with that calculated by EMD. Furthermore, the EEMD based instantaneous frequency is more sensitive to the seismic thickness variation than that based on EMD and more consistent with the stratigraphic structure, which means that E-IFPs are more advantageous in characterizing reservoirs.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Applied Geophysics - Volume 111, December 2014, Pages 102–109
نویسندگان
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