Time Domain Toolbar

TimeDomain analysis and processing options
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"RemTrend" - least squares fit of a straight line to the data is subtracted from the data
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"Smoothing" - time domain smoothing tool

"Half Width: <nnn>" - filter half-width in seconds

"Type: BOXCAR | TRIANGLE" - filter shape
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"Moments" - apply higher order moments of time-series values in sliding window

"Width: <nnn>" - moment window width in seconds

"Type: KURTOSIS" - moment type
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"Square" - square each amplitude value

"Normalize" - scalte the ammplitudes so that the absolute value of the maximum amplitude is 1.0

"ChopNegatve" - set all negative amplitude values to 0.0

"GeomSpread" - multiplies trace by P wave geometrical spreading factor (Aki & Richards, eq. 9.44). Requires that GSARC and DEPTH header variables are set
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InstPer (Tau_p) tool: calculate instantaneous period using the Tau_p (smothing) algorithm of Allen, R.M., and H. Kanamori, The Potential for Earthquake Early Warning in Southern California, Science, 300 (5620), 786-789, 2003.

"Apply" - calculate with the current settings

"Alpha: <nnn>" - smoothing constant (seconds)
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InstPer (Tau_c) tool: calculate instantaneous period using the Tau_c (windowed) algorithm of Kanamori, H. (2005). Real-time seismology and earthquake damage mitigation. Annual Review of Earth and Planetary Sciences 33, 195–214.

"Apply" - calculate with the current settings

"Window: <nnn>" - window width (seconds)

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