Microtremor Array Resolution Frequency Band Checker
Check that array aperture brackets the wavenumbers of the target frequency band for SPAC/f-k dispersion work.
Description
Check that array aperture brackets the wavenumbers of the target frequency band for SPAC/f-k dispersion work.
Microtremor Array Resolution Frequency Band Checker is a focused tool for the following task. Check that array aperture brackets the wavenumbers of the target frequency band for SPAC/f-k dispersion work. It reports λ, r_max ok?, r_min ok? from the values you provide rather than inventing measurements, coefficients, or professional judgment that are not part of the input.
When to use Microtremor Array Resolution Frequency Band Checker
Use this seismology calculation to reproduce a stated convention, screen observations, or compare scenarios whose units, coordinate conventions, catalog selection, and model assumptions are known.
- r_min (km)
- Required number in km. Smallest station spacing.
- r_max (km)
- Required number in km. Array aperture.
- c (km/s)
- Required number in km/s. Approximate Rayleigh phase speed.
- f (Hz)
- Required number in Hz. Target frequency.
The cited overview of Seismology supplies background for the terminology and domain context used by this tool.1
How Microtremor Array Resolution Frequency Band Checker works
Check that array aperture brackets the wavenumbers of the target frequency band for SPAC/f-k dispersion work. Inputs are interpreted exactly in the displayed units and the calculation returns the following fields without presentation rounding.
- λ (km)
- Returned number in km. Target wavelength.
- r_max ok?
- Returned boolean. Whether aperture covers about one wavelength.
- r_min ok?
- Returned boolean. Whether spacing is below half a wavelength.
Limitations and assumptions
- Earth structure, source geometry, path effects, site response, instrument response, catalog completeness, uncertainty, and the fitted range can dominate the accuracy of simplified seismic calculations.
- r_min must be at least 0.
- r_max must be at least 0.
- c must be at least 0.
- f must be at least 0.
- Use finite inputs in the displayed units, preserve source measurements and assumptions, and independently verify consequential decisions.
Alternative or Complementary approaches
For analysis or hazard decisions, retain uncertainty and provenance and compare the result with waveform processing, calibrated regional models, and guidance from qualified seismologists or the responsible agency.
References
-
Seismology — Wikipedia contributors
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