Abstract:

Estimation of harmful influence parameters of acoustic-seismic fields is important in environmental complex monitoring to decide such problems as the determination of infrasound harbinger of tsunami, earthquake. Such enormous engineering structures as dams, power stations heat changers, and main pipelines are also infrasound sources and should be under control. Theoretical methods of sound field estimation are noneffective in low and underlow frequencies because of the simplifying assumptions. The mathematical model of vector-phase methods is based, for example, on solving for the integral on the closed surface. It permits one to define vector-kinematic characteristics of an acoustic field and its spatially-temporary distribution in controllable volume. The development of elastic wave-field parameter measurements and the creation of multicomponent receiver parks allow one to carry out background parameter measurement or responses to pulse influences with the purpose of heterogeneity localization in sedimental or radical layers of the researched area with minimal expense of energy and means for nature measurement realization. The presence of spectral composites as a result of local heterogeneities in the research area was established. It was noted that stream of power measurements provide the increasing signal/noise ratio up to 16--20 dB in different conditions.