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用中国数字地震台网（ＣＤＳＮ）的长周期波形资料反演了１９９７ 年１１ 月８ 日中国西藏玛尼地区ＭＳ７．９ 地震的地震矩张量， 用频率域里反褶积方法从Ｐ波和Ｓ波震相中分别提取了震源时间函数， 并经反演依赖于方位的震源时间函数获取了断层面上破裂随时空变化的图象． 矩张量反演结果表明： 玛尼地震发震应力场的Ｐ 轴和Ｔ轴均接近于水平， Ｐ轴在ＮＮＥ方向（方位角２９°， 倾角７°）， Ｔ轴在ＳＥＥ方向（方位角１２２°， 倾角２３°）， 断层错动以走滑为主；标量地震矩为３．４×１０２０ Ｎ·ｍ ， 矩震级Ｍ Ｗ＝ ７．６． 由矩张量反演得到的震源时间函数显示，这次地震是由一次较小事件和较大事件组成的， 较小事件大约持续５ ｓ， 较大事件持续约１０ ｓ． 由余震分布可推断出玛尼地震的发震断层是走向为２５０°、以走滑为主的左旋－逆断层，断层面的倾角比较陡， 约８８°． 根据反演结果计算了理论格林函数， 然后用反褶积方法提取了震源时间函数． 从不同台站的Ｐ波和Ｓ波中分别提取的震源时间函数一致表明这次地震破裂的时间历史比较简单， 可用一宽度约１０ ｓ的正弦形的函数近似表示． 进一步反演从不同台站上得到的、依赖于方位的Ｐ波和Ｓ波震源时间函数， 获得了断层面上滑动
Using the long period waveform data from China Digital Seismograph Network (CDSN), the seismic moment tensor of the MS7.9 earthquake in Mani area of Tibet, China, November 8, 1997 is retrieved. Using the deconvolution method in the frequency domain, S-wave seismic facies were extracted respectively, and the image of rupture with time-space variation on the fault plane was obtained by inverse time-dependent source time function. The results of moment tensor inversion show that the P-axis and T-axis of Seismic stress field of Mani earthquake are close to horizontal, the P axis is in NNE direction (azimuth angle of 29 ° and dip angle of 7 °), and T axis is in SEE direction 122 °, dip angle 23 °). The fault is mainly slippery; the scalar seismic moment is 3.4 × 1020 N · m, and the moment magnitude M W = 7.6. The source time function derived from the moment tensor inversion shows that the earthquake is composed of a smaller event and a larger event lasting about 5 s and the larger event lasting about 10 s. From the aftershock distribution, it can be deduced that the seismogenic fault of the Mani earthquake is a L-reverse fault mainly strike-slip with a strike of 250 °, and the dip of the fault plane is relatively steep, about 88 °. Based on the inversion results, the theoretical Green’s function is calculated, and then the source time function is extracted by deconvolution method. The time functions extracted from P-waves and S-waves in different stations consistently show that the time history of this earthquake rupture is relatively simple and can be approximated by a sinusoidal function with a width of about 10 s. Further inversion of the time-dependent P-wave and S-wave sources obtained from different stations and dependent on the azimuths resulted in the slip on the fault plane