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中国地区已建立５０个宽频带数字化地震台网，在地震活动性较高的地区，在地震活动性较高的地区，还建有北京、上海、山西、兰州等２０组区域性数字化地震台网，和青藏高原（兰州）、上海和海拉尔三个数字化台阵，也能记录到清楚的震相和相应的波列；本文辑录了有可能利用中国地区丰富的数字化地震台网记录，来探测研究地壳和上地幔震波速度结构的三维分布和品质因数Ｑ值三维分布的有关信息和计算机算法实现途径；可将地震台记录的地动位移谱和速度谱，经过地球介质的吸收衰减校正，换算为震源面上的震级谱，以便帮助判别地震系列类型（孤立型，主震余震型，主震余震型，前震－主震－余震型或震群型）[３，１２，１２，１６］ 。希图引起国内外有关专家，包括海外华人学者的关注，参与这方面的研讨，以促进充分利用中国地区丰富的数字化地震台网记录，进行三维速度结构成像的研究、进行地壳和上地幔震波衰减－品质因数Ｑ值三维分布的探测研究、为地震预报研究服务为减轻灾害服务。 ２００１年８月日本爱媛大学地球动力学研究中心赵大鹏教授在北京大学“地球科学报告会”上报告了他的地震断面成像方法新方法。赵教授方法的最大特点是，对于处理复杂形状的地震速度断面具有突出的优点，已广泛地用于许多国
In China, 50 broadband digital seismograph networks have been set up. In areas with high seismicity, there are also 20 sets of regional digital seismograph networks in Beijing, Shanghai, Shanxi and Lanzhou in areas with high seismicity , And the Qinghai-Tibet Plateau (Lanzhou), Shanghai and Hailar can also record a clear seismic facies and the corresponding wave train; This paper records the possibility of using the rich records of digital seismographs in China to detect Crustal and upper mantle seismic wave velocity structure of the three-dimensional distribution and quality factor Q value of the three-dimensional distribution of information and computer algorithms to achieve; can be recorded by the seismic station displacement spectrum and velocity spectrum, through the Earth’s medium absorption attenuation correction, converted to The magnitude spectrum on the focal plane is used to help discern seismic series (isolated, mainshock, mainshock, foreshock-mainshock-aftershock or swarm) [3,12,12,16]. Hope to arouse the concern of experts at home and abroad, including overseas Chinese scholars, to participate in this research to promote the full use of the rich digital seismic network records in China, the study of three-dimensional velocity structure imaging, the crustal and upper mantle shock attenuation - Probing research on three-dimensional distribution of quality factor Q value, serving earthquake prediction research and disaster mitigation services. In August 2001, professor Zhao Dapeng from Ehime University Earth Dynamics Research Center reported a new method of seismic section imaging in Peking University’s “Earth Science Symposium”. Professor Zhao’s most prominent feature is that it has outstanding advantages for dealing with seismic velocity profiles of complex shapes and has been widely used in many countries