STUDY OF TRANSITION ZONE IN UPPER MANTLE FROM DIGITAL SEISMIC DATA
Received date: 1997-02-24
Revised date: 1997-05-20
Online published: 1998-02-01
Since 1980's, there have been much progress on study of transition zone in upper mantle, in detection of both physical and chemical feature. Summarizing on study of transition zone in upper mantle using digital seismic data is given, and state of study using broadband seismic data is introduced. Up to now, there are still different views on feature of transition zone in upper mantle, especially for 670 km transition zone. On the basis of comment on researches after 1980's, this paper analyses the existing problem in the present and indicates possible direction of study.
Key words: Transition zone; Upper mantle; Seismic wave; Phase; Digital seismology; Broadband seismology.
Gao Yuan,Zhou Huilan . STUDY OF TRANSITION ZONE IN UPPER MANTLE FROM DIGITAL SEISMIC DATA[J]. Advances in Earth Science, 1998 , 13(1) : 34 -37 . DOI: 10.11867/j.issn.1001-8166.1998.01.0034
[1] Revenaugh J, Jordan T H. Mantle layering from ScS reverberations 2 the transition zone. J Geophys Res, 1991, 96:19763-19780.
[2] Bostock M G, Cassidy J F. The upper mantle discontinuities in Western Canada form ps conversions. Pageoph,1995, 145(2):219-233.
[3] Liu L-G. The causes of the major seismic discontinuities in the transition zone of the earth's mantle. Geophys J Int, 1995, 121:404-408.
[4] 魏东平, 周蕙兰. 上地幔670km间断面相关震相的走时. 科学通报, 1993, 38(22): 2063-2066.
[5] Dizcwonski A M, Anderson D L. Preliminary reference earth model. Phys Earth Planet Int, 1981, 25:297-356.
[6] Faber S, M ull er G. Converted phases from the mantle transition zone observed at European stations. J Geophys,1984, 54:183-194.
[7] Vinnik L P, Avetisjan R A, Mikhailova N G. Heterogeneities in the mantle transition zone from observations of P-to-S converted waves. Phys Earth Planet Inter, 1983, 33:149-163.
[8] Wajeman N, Souriau A. A possible local anomaly in the 670 km discontinuity beneath Kerguelen. Phys Earth Planet Inter, 1987, 49: 294-303.
[9] Richards M A, Wick s C W. S-P conversions from the transition zone beneath Tonga and the nature of the 670 km discont in uity.Geophys J Int, 1990, 101:1-35.
[10] Kind R, Vinnik L P. The upper mantle discont inuities underneath the GRF Array from P-to-S converted phases. J Geophys, 1988, 62:138-147.
[11] Paulssen H. Evidence for a sharp 670 km discontinuity as inferred from P-to-S converted waves. J Geophys Res,1988,93:10 489-10 500.
[12] Bock G, Kind R. A global study of S-to-P and P-to-S conversion from the upper mantle transition zone. Geophys J Int, 1991, 107:117-129.
[13] Stammler K, Kind R, Kosarev G, et al. Broadband observations of Ps conversions from the upper mantle in Eurasia. Geophys J Int, 1991, 105:801-804.
[14] Vinnik L P. Detection of waves converted from P to S in the mantle. Phys Earth Planet Inter, 1977, 15:39-45.
[15] 周蕙兰, 王志秋, 魏东平. 青海省托托河沿北部上地幔间断面的转换波研究. 见: 陈运泰, 阚荣举, 滕吉文, 等编. 中国地球物理学进展. 北京: 海洋出版社, 1994. 91-99.
[16] Rin gwood A E, Irifune T. Nature of the 650 km seismic discontinuity: Implications for mantle dynamics and differentiation. Nature, 1988, 331: 131-136.
[17] Anderson D L. Theory of the Earth. Boston: Blackwell Scientific, 1989. 366.
[18] Anderson D L, Bass J D. Transition region of the Earth's upper mantle. Nature, 1986, 320:321-328.
/
〈 |
|
〉 |