Unformatted text preview: greater. Also, if velocity increases with depth, longer wavelengths arrive first (This fig is for water-waves) Applied Geophysics – Waves and rays - I Source spectrum This is the range of frequencies within the source pulse Try to avoid frequencies where there is significant noise e.g. 50 Hz Sources: Shotgun Hammer Explosive Air gun higher to lower frequency...
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- Spring '09
- Frequency, Velocity, Wavelength, longer wavelengths, Longer wavelengths sample