Microseism 1
Microseism 1 : Natural Disaster. A feeble oscillatory disturbance of the earth's crust, detectable only by very sensitive seismographs. Certain types of microseisms seem to be closely correlated with pressure disturbances and can be used to locate such disturbances, especially in the case of tropical cyclones. In addition, traffic, industrial activities, and wind flexure of trees and tall structures can create microseisms
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