Elastic Wave Signal Attenuation Characteristics in Layered Earth Channel

Author

Hao, Jianjun ; Zhao, Yuan

Author_Institution

Coll. of Electr. & Inf. Eng., Shandong Univ. of Sci. & Technol., Qingdao, China

fYear

2011

fDate

18-20 April 2011

Firstpage

238

Lastpage

241

Abstract

In this paper, by analyzing the principles of elastic wave propagation in earth crust layer, the total attenuation model of longitudinal wave in simplified parallel layered earth medium channel is achieved, then a parallel layered channel and quasi-parallel layered channel model developed respectively. The propagation simulation is carried out using ray-trace method, the results show: (1) attenuation degraded with the incident angle increased, (2) whether in parallel layered earth medium or quasi-parallel earth medium, the variation of incident angle has slight effect on transmission attenuation, but can cause an enlarged arrived position offset, (3) medium absorption attenuation is lower than interface reflection loss of about 20 dB at frequency of 1500 Hz.

Keywords

Earth crust; geophysical techniques; earth crust layer; elastic wave propagation; elastic wave signal attenuation characteristics; incident angle; interface reflection loss; longitudinal wave; medium absorption attenuation; position offset; propagation simulation; quasiparallel layered channel model; ray-trace method; simplified parallel layered earth medium channel; total attenuation model; transmission attenuation; Absorption; Attenuation; Earth; Mathematical model; Propagation losses; Q factor; Reflection; elastic wave; through-the-earth communication; transmission attenuation;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications and Mobile Computing (CMC), 2011 Third International Conference on

Conference_Location

Qingdao

Print_ISBN

978-1-61284-312-4

Type

conf

DOI

10.1109/CMC.2011.129

Filename

5931180