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国际大地测量学和地球物理学联合会（ＩＵＧＧ）第２１届大会于１９９５年７月２—１４日在美国科罗拉多州的博尔德市的科罗拉多大学举行。来自世界各国的约５０００名科学家参加了这次大会。中国派出了近１００名专家出席会议。ＩＵＧＧ下属的各个协会（除国际海洋物理科学协会外）如国际地震学与地球内部物理学协会（ＩＡＳＰＥＩ）、国际大地测量学协会（ＩＡＧ）、国际地磁学与高空大气物理学协会（ＩＡＧＡ）、国际水文科学协会（ＩＡＨＳ）、国际气象与大气科学协会（ＩＡＭＡＳ）和国际火山学与地球内部化学协会（ＩＡＶＣＥＩ）等，都组织了学术讨论会和研讨会，联合会收到５０００多篇论文，其中有３５００多篇在会上宣读和张贴展示。在ＩＵＧＧ大会期间举行了第２８届ＩＡＳＰＥＩ大会。大会安排的５３个专题讨论会和研讨会涉及广泛的地震学与地球内部物理学的理论与实际问题，包括了地球深部构造和动力学、地幔构造和动力学、大陆岩石层构造和动力学、地壳物理、地球物理台网、地球物理资料及其分析处理、地震学理论及应用、地震震源、地震预测和预警、地震危害与地震危险性，等等。
The 21st Congress of the International Union of Geodesy and Geophysics (IUGG) was held at the University of Colorado, Boulder, Colorado, from July 2-14, 1995. About 5,000 scientists from all over the world attended the conference. China sent nearly 100 experts to attend the meeting. IUGG’s affiliated associations (with the exception of the International Association of Marine Physics and Science) include IASPEI, IAG, IAGA, The International Hydrological Association (IAHS), the International Association of Meteorological and Atmospheric Sciences (IAMAS) and the International Association of Volcanology and Intra-Earth Chemistry (IAVCEI), have organized seminars and seminars, the Federation received more than 5,000 papers, More than 3,500 of them were read and posted at the conference. The 28th IASPEI Conference was held during IUGG. The 53 symposiums and seminars arranged by the conference covered a wide range of theoretical and practical issues in seismology and physics of the Earth’s interior including deep earth tectonics and dynamics, mantle tectonics and dynamics, continental lithospheric tectonics and dynamics, Crustal physics, geophysical network, geophysical data and analysis, seismology theory and application, earthquake source, earthquake prediction and early warning, earthquake hazard and earthquake risk, and so on.