However, knowing which filter to apply is not intuitive. Seismologists therefore commonly apply filters to remove background noise, similar to what a sound-engineer does when recording live music. This includes, but is not limited to: instrumental noise, changes in the Earth’s tides, pressure variations, and traffic. Given their level of sensitivity seismometers also pick up noise. For example, a seismometer in California can detect a magnitude 7.0 or above earthquake in Chile, Japan and/or even Turkey! These instruments are sensitive enough to measure large, distant earthquakes from across the globe. ![]() Seismometers are highly sensitive instruments that typically measure translational ground motions. To record these waves we use seismometers. From earthquake detection to oil discovery, seismic waves allow us to investigate Earth processes and its interior in ways no other data type can.
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