第29届IASPEI大会概况及其主要专题讨论会和研讨会内容汇编

国际地震学与地球内部物理学协会（ＩＡＳＰＥＩ）第２９届大会于１９９７年８月１８～２８日在希腊塞萨洛尼基举行。来自６２个国家和地区的１０５１位科学家参加了这次大会。国家地震局有近２０位科学家出席了会议。本届大会共安排了４６个学术专题报告会和研讨会,会上宣读论文７１６篇,张贴展示论文６９５篇。本届ＩＡＳＰＥＩ大会的学术报告涉及广泛的地震学和地球内部物理学研究的问题,内容包括：地震预测;地球内部构造和地球动力学;不同构造区的强地面运动;地震孕育过程：定量模型和假设检验;岩石圈结构、动力学过程和各向异性;火山地震学;地震早期预警系统;地震危险性与地震危害;地震危险性和地震危害评估中的新的地学信息技术;触发／诱发地震;与构造过程有关的电磁信号;岩石圈结构的长周期研究和工程地震学;估计地震大小的新方法;地球的结构和演化：地球物理观测、实验约束和模似;地震成核、动力破裂及其终止：观测和物理模拟;今后的地震仪器的发展;地震灾害与危害的公众教育,等等。     

Potential field imaging of Palaeozoic orogenic structure in northern and central Europe

The Trans-European Suture Zone (TESZ) is the most fundamental lithospheric boundary in Europe, separating the ancient crust of the Fennoscandian Shield–East European Craton from the younger crust of central Europe, and extending deep into the mantle. Geophysical potential field images provide an overview of the entire Palaeozoic orogenic system of northern and central Europe for the first time. The TESZ is largely concealed by sedimentary basins of Permian–Cenozoic age; geological observations are largely restricted to local basement highs and deep boreholes, and the coverage of deep seismic surveys is widely spaced, despite experiments recently acquired within the EUROPROBE programme. By contrast, the potential field data offer a relatively detailed coverage of standardised observations throughout the TESZ. While some features of the images may be sourced in the near surface, particularly in the gravity image, much of their content reflects the structure of the underlying Palaeozoic basement. At the scale presented, the images highlight the most fundamental features of the crustal structure of the TESZ. These include the strong contrast between the highly magnetic crust of the East European Craton and the less magnetic Palaeozoic-accreted terranes of central Europe; the lateral continuity of terranes and their internal structure, particularly where arc-magmatic complexes are involved; and the location and geometry of the terrane boundaries (oceanic sutures and strike-slip zones) that separate them.