Method for removing Scholte waves and similar ground roll type waves from seismic sea bottom data shallow waters
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United States of America Patent
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Mar 31, 2015
Grant Date -
Apr 19, 2012
app pub date -
Oct 12, 2011
filing date -
Oct 13, 2010
priority date (Note) -
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Abstract
The various embodiments of the present invention provide a method for removing a Scholte waves and similar ground roll type waves from a seismic sea bottom data in a shallow water. The method comprises acquiring seismic sea bottom data in a shallow waters, applying a time-frequency-wave number (t-f-k) transform on the acquired seismic sea bottom data, identifying a time-frequency relationship of a surface wave based on a specific wave number, identifying a frequency-wave number relationship of a surface wave based on a specific time, designing a time varying frequency-wave number filter in the time-frequency-wave number domain to separate the surface wave, applying a time varying frequency-wave number filtering process to remove an undesired energy and inversing a filtered record by applying an inverse S-Transform operation and an inverse Fourier Transform operation.
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