microseism

The InSight has yet to detect any marsquake, but the microseism shows that the lander's seismometer is working.

Meanwhile, the distance between the first two sensors and the working face should be within 50 m, otherwise the microseism positioning accuracy will be affected.

Based on this framework, the amplitude of the secondary microseism [A.sub.2] is proportional to the power of ocean wave height in the dominant source area, whereas that of the primary microseisms [A.sub.1] is proportional to ocean wave height in the dominant source area.

The ground and environment monitoring system measures information on microseism, minute displacement, strain ratio, temperature, water level, water quality, exhaust/atmospheric gas, soil, and so forth for chief national facilities.

M.: "Repeteability of Microseism Measurements in Port Hueneme Case Study".

(The seafloor and buried sensors were not yet in place during this event.) Ambient noise spectra of the three components of the borehole sensor show that the horizontal components are noisier than the vertical components below about 0.04 hertz and that the horizontal components are quieter than the vertical components above the microseism peak at about 0.1 hertz [ILLUSTRATION FOR OMITTED].

Various kinds of monitoring information of combined samples can be obtained under different test conditions, while AE and microseism information can reflect the energy dissipation intensity of combined samples during the failure process [17, 19].

Production practice has proved that rock bursts and microseism easily occur when mining in the vicinity of a fault (Alber et al., 2009; Chen et al., 2012; Cianciara et al., 2008; Aguado et al., 2009; Gaviglio, 1985; Cao et al., 2009).

(2001) analysed the fracturing characteristics of roofing from the perspective of microseism while Peng (1973; 1993) revealed the pattern of roofing activity and structural characteristics of roofing at the working face from the perspective of indoor rock mechanics and physical equivalent simulation.