Murmurs from the Earth…
Whispers from the Sky
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Analysis of Sound
1. Estimate the speed of sound
2. Rotating Machinery
3. Doppler Shift
4. Twin Rotor Chinook Helicopter
5. Air Tractor AT-502B
a. AT-502B Propeller Blade Passage Tone
6. Ground Reflection Interference in Aircraft Sound
Earth Orbiting Satellites
1. The Doppler Shift of Satellite Radio Beacons
2. Additional Passes with Improved Timing
3. Passive Tracking of Satellites using only Range Data
Earth Sounds
— Earthquake Signal converted to Sound
— Sounds from Bluebird Hill
Audio Recording System and Software
Seismology
“LIVE” Seismograph
1. Lehman Seismograph
Lehman Seismograph Construction Notes
2. Seismic Phases and Arrival Times
3. Seismogram Interpretation
Weather Summary Charts
Earth Sounds
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