收稿日期: 2000-07-07
修回日期: 2000-11-14
网络出版日期: 2001-06-01
基金资助
国家自然科学基金项目“上地幔物质相转变的超声测量研究”(编号:49774235)资助.
OVERVIEW OF SEISMIC WAVE ATTENUATION AT HIGH TEMPRATURE AND HIGH PRESSURE
Received date: 2000-07-07
Revised date: 2000-11-14
Online published: 2001-06-01
岳兰秀,谢鸿森,周文戈 . 高温高压弹性波衰减的研究综述[J]. 地球科学进展, 2001 , 16(3) : 382 -386 . DOI: 10.11867/j.issn.1001-8166.2001.03.0382
An overview of seismic wave attenuation is given, including experimental method, attenuation mechanism and application of wave attenuation in Earth science. Two important experimental methods of measuring wave attenuation are introduced. The first method is spectral ratio technique. It is effective for measuring samples with high attenuation. However it has some defects. For example, it is useful for measuring sample’s relative attenuation. And it can’t measure absolute attenuation. The second method is interferometric technique. It surmounts the insufficiency of spectral ratio technique. It can measure sample’s absolute attenuation. But it only measures attenuation of melten samples. There are many factors that control attenuation, including mechanism of grain boundary damping and influence of high temperature. The mechanism of grain boundary damping is divided into two parts that one is the contact manner of grains, the other is intercrystalline thermal currents. Moreover there are much fruit of studying attenuation, which involves the variation of Q with temperature, pressure, and depth, and the attenuation anisotropy of rocks. The investigation of attenuation is important for estimating the structure of rocks and the internal structure of the Earth. At the same time it is useful for judging the elastic properties of rocks including volume modulus, elastic coefficient and so on. So it is necessary to study wave attenuation, especially at high temperature and high pressure.
[1] Born W T. Attenuation constant of earth materials[J]. Geophysics, 1941,6:132-148.
[2] Sato H, Sacks I S, Murase T,et al. Qp-melting temperature relation in peridotite at high pressure and temperature: attenuation mechanism and implications for the mechanical properties of the upper mantle[J]. Journal of Geophysical Research,1989, 94(B8): 10 647-10 661.
[3] Liu Bin, Kern H, Popp T. Velocities and attenuation of P-and S-waves in dry and wet rocks with different porosities under different confining pressures [J]. Acta Geophysica Sinica,1998,41(4):537-546.[刘斌, Kern H, Popp T.不同围压下孔隙度不同的干燥及水饱和岩样中的纵横波速度及衰减[J].地球物理学报,1998,41(4):537-546.]
[4] Shi Xingjue, Cao Wenbao. Measurement of the Q value of rocks and its variation with pressure[J]. Progress in Geophysics, 1993,8(4):192-198.[施行觉,曹文宝.岩石Q值的测量及随压力的变化规律[J].地球物理学进展,1993,8(4):192-198.]
[5] Toksoz M N, Jackson D H, Timur A. Attenuation of seismic waves in dry and saturated rocks I. Laboratory measurements[J]. Geophysics, 1979, 44(4):671-690.
[6] Johnston D H, Toksoz M N. Ultrasonic P and S wave attenuation in dry and saturated rocks under pressure[J]. Journal of Geophysical Research, 1980, 85(B2):925-936.
[7] Kim D O, Katahara K W, Manghnani M H,et al. Velocity and attenuation anisotropy in deep-sea carbonate sediments[J]. Journal of Geophysical Research, 1983, 88(B3): 2 337-2 343.
[8] Kern H, Liu B, Popp T. Relationship between anisotropy of P and S wave velocities and anisotropy of attenuation in serpentinite and amphibolite [J]. Journal of Geophysical Research,1997, 102(B2):3 051-3 065.
[9] Knopff L. Q [J]. Reviews of Geophysics and Space Physics,1964, 2:625-660.
[10] Jackson D D, Anderson D L. Physical mechanisms of seismic wave attenuation [J]. Reviews of Geophysics and Space Physics, 1970,8:1-63.
[11] Sato H, Sacks I S, Murase T,et al. Attenuation of compressional waves in peridotite measured as a function of temperature at 200 MPa [J]. Pageoph, 1988, 128(1/2):433-447.
[12] Zamanek J, Rudnick I. Attenuation and dispersion of elastic waves in a cylindrical bar[J]. Journal of Acoustic Society of America, 1961,33:1 283-1 288.
[13] Katahara K W, Rai C S, Manghnani M H,et al. An interferometric technique for measuring velocity and attenuation in molten rocks[J]. Journal of Geophysical Research, 1981,86(B12):11 779-11 786.
[14] Sato H, Manghnani M H. Ultrasonic measurements of Vp and Qp: relaxation spectrum of complex modulus on basalt melts[J]. Physics of Earth and Planetary Interiors, 1985,41:18-33.
[15] Manghnani M H, Sato H, Rai C S. Ultrasonic velocity and attenuation measurements on basalt melts to 1 500℃: Role of composition and structure in the viscoelastic properties[J]. Journal of Geophysical Research,1986, 91(B9):9 333-9 342
[16] Liu Bin, Ge Ningjie, Kern H,et al. Velocities and attenuation of P-and S-waves and their anisotropies in serpentinite and amphibolite under different P-T conditions [J]. Acta Geophysica Sinica, 1998,41(3):371-381.[刘斌,葛宁洁,Kern H,等.不同温压条件下蛇纹岩和角闪岩中波速和衰减的各向异性[J].地球物理学报,1998,41(3):371-381.]
[17] Johnston D H, Toksoz M N. Thermal cracking and amplitude dependent attenuation[J]. Journal of Geophysical Research, 1980, 85(B2):937-942.
[18] Toksoz M N, Johnston D H, Timur A. Attenuation of seismic waves in dry and saturated rocks I. Laboratory measurements[J]. Geophysics, 1979, 44(4): 681-690.
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