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The Analysis group contains modules for quantitative examination of seismic data in the amplitude and frequency domains. These tools are used throughout the processing workflow to evaluate data quality, monitor the effect of processing steps, guide parameter selection, and support interpretation. They do not modify the seismic data — they compute and display attributes or spectra to help the processor understand what the data contains.
Use these modules to answer questions such as: Where is the energy concentrated in my gather? Is the amplitude balanced across offsets? What is the dominant frequency band? Are there noise bursts or spectral notches introduced by processing? Has deconvolution broadened the bandwidth as expected?
Energy calculator computes a smoothed map of local seismic energy (mean squared amplitude) across a gather using a 2D sliding window. Each output sample represents the average squared amplitude of all non-zero input samples within the specified trace-direction and time-direction half-windows. Muted samples are automatically excluded so that energy estimates remain unbiased near mute boundaries. The result is displayed as an energy gather with the same dimensions as the input, together with a per-trace RMS amplitude chart that plots the lateral amplitude balance at a glance. This module is well suited for diagnosing offset-dependent amplitude variations, evaluating gain recovery, and identifying dead or anomalous traces.
Fast spectral analysis evaluates the frequency content of one or more input gathers interactively. The user specifies the time range and trace range to analyse, and the module computes the amplitude spectrum over that window. Results can be displayed in normalized, decibel, or absolute amplitude scale, making it straightforward to compare bandwidth across gathers, check for spectral notches, or assess noise levels at specific frequency bands. A smoothing window can be applied to reduce spectral variance. This module produces no output data connector — its results are displayed as a spectrum view within the workflow interface.
Frequency spectrum f-t calculates the amplitude-frequency spectrum for seismic data and presents the result as both a spectrum view and a matrix display. The user controls the sample window used for spectrum calculation and a smooth window for spectral averaging. This module is useful for a quick frequency-domain QC of any seismic gather or stack section.