Seismic source positioning method for polar region ice layer
A seismic source location, ice layer technology, applied in seismology, seismic signal receivers, seismology for areas covered by water, etc., can solve the problem of whether the practicality or applicability is difficult to meet the needs of ice source location, a large number of Solve problems such as manpower and high instability of arctic sea ice, and achieve high operational practicability in polar environment, simple operation process and streamlined equipment
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[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0035] combine Figure 1 to Figure 6 , the present invention is based on the theory of elastic waveguide, combined with the characteristics of polar ice sound propagation to construct the theoretical framework of the positioning method. In view of the huge difference between the vertical thickness and horizontal size of polar sea ice, the sound propagation in the ice layer can be simplified to a 2-dimensional problem, ignoring the vertical variation of the source. figure 1It is a schematic diagram of low-frequency elastic wave propagation in the polar ice layer. The elastic wave field excited by the seismic source propagates omnidirectionally in the ice layer. Part of the energy reaches the location of the geophone and is absorbed by three mutually orthogonal (X, Y components and ice Surfaces parallel and perpendicular to each other,...
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