In seismology, a microseism is defined as a faint earth tremor caused by natural phenomena. [1][2] Sometimes referred to as a "hum", [3] it should not be confused with the anomalous acoustic phenomenon of the same name.

2015年3月17日 · In seismology, a microseism is defined as a faint earth tremor caused by natural phenomena. [1] [2] The term is most commonly used to refer to the dominant background seismic noise signal on Earth, which are mostly composed of Rayleigh waves and caused by water waves in the oceans and lakes.

Microseisms, also known as noncentric seisms or passive seisms, are similar to natural earthquakes with low intensity and always accompany the process of reservoir fracturing, water injection, and other production activities. The generated location of microseisms can be determined according to the type of reflector, calculated by the sampling ...

Microseisms are continuous seismic disturbances of the earth's surface that constitute the normal background oscillations of seismograms. Although they range in period from a fraction of a second to about 260 sec, the most prominent microseism signals, which are definitely related to marine storms, have periods from 2 to 10 sec and speeds of ...

The meaning of MICROSEISM is a feeble rhythmically and persistently recurring earth tremor.

Small ground motions known as microseisms are commonly recorded by seismographs. These weak wave motions are not generated by earthquakes, and they complicate accurate recording of the latter. However, they are of scientific interest because their form is related to the Earth’s surface structure.

At times of relatively high microseismic activity short-period (shorter than 5 seconds) microseisms consist of both body waves and higher-mode surface waves. From the phase velocity and direction of body waves, source areas were determined, coinciding with low-pressure regions on the weather map.

Microseisms are the most ubiquitous continuous seismic signals on Earth at periods between approximately 5 and 25 s (Peterson 1993; Kedar and Webb 2005).

2016年8月25日 · Ocean microseisms are the continuous seismic background oscillations, which result from the interaction between the atmosphere, the ocean waves, and the solid earth. Two distinct peaks are globally observed in the microseism spectra, which differ in …

Microseisms are defined here as more or less regular motion of the ground, which is not produced by earthquakes or explosions, has periods or pseudo-periods of not exceeding several minutes, and continues for many periods.