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<< Click to Display Table of Contents >> Navigation: MultiFocusing > Mute Factor Visualization |
This module is deprecated and is no longer recommended for new projects.
Mute Factor Visualization computes and overlays mute lines on a seismic gather display to allow interactive QC of the offset-dependent mute applied in Multifocusing or Radon demultiple workflows. For each user-defined mute factor value within a specified range, the module computes the corresponding mute time curve using the NMO velocity field and the near-surface velocity V0, then displays the resulting lines overlaid on the input gather. This allows the processor to visually verify whether the mute boundary correctly follows the first arrivals or multiple onset before committing to a processing run.
The RMS velocity gather used to compute the expected NMO correction and the mute time curve at each offset. Connect this to the output of a velocity analysis module or a velocity model reader.
The input seismic gather on which the mute factor lines are displayed. This is the gather being reviewed for mute QC — it may be pre-NMO or post-NMO depending on the IsDataNMO setting.
The step size between successive mute factor values displayed on the gather. The default is 1. Together with Mute Offset Min and Mute Offset Max, this controls how many mute lines are drawn on the display. A smaller increment draws more lines for finer QC; a larger increment draws fewer lines for a cleaner overview.
The minimum mute factor value for which a mute line is drawn. The default is 1. Set this to the smallest mute factor of interest in your QC range.
The maximum mute factor value for which a mute line is drawn. The default is 6. Set this to the largest mute factor of interest; lines with factors above this value are not displayed.
The near-surface (shallow) velocity used in the mute factor calculation (m/s). The default is 3000 m/s. This is used to compute the radius R = V_rms² × t / (2 × V0) that defines the pivot point of the mute curve at each time sample. Set this to the velocity of the near-surface layer or water column for marine data.
Indicates whether the input gather has already been NMO-corrected (default: true). When set to true, the mute lines are drawn as horizontal lines in the NMO-corrected time domain. When set to false, the module applies an additional hyperbolic time shift to project the mute lines onto the un-corrected gather for display.