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Definition English:
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Compressional or longitudinal wave body generated by an earthquake. The movement of particles passing through the middle in the direction of wave propagation, causes compression and rarefaction. Its speed varies between 6 and 14 km/s and the period varies between 0.1 and 2.0 seconds. (Free translation from the original: Material IV - Glosario de Protección Civil, OPS, 1992) |