沈惠川：祝贺《徐世浙院士文集》出版 我在“纪念徐世浙院士”一文中说过： 徐世浙对复变函数很熟悉（现在大部分物理学家由于经常不用因而荒废了复变函数，甚至在看到Fowler-Darwin统计时还必须回家查书）。他提出用复变函数中的“保角变换”方法，可以将并非严格球面的地球表面变换为严格的球面，从而可以利用球谐函数来进行计算。这在地球物理学的理论计算中是一个了不起的成就。貌似很简单的道理，却不是每个人都能想得到的。他为此写了一本小书，并送给我一本。 今天，在书城猛然看到《徐世浙院士文集》已经上架，使我十分兴奋。迫不及待之下，迅速将全书浏览了一遍。此书有两篇“序”。其中一篇讲到徐教授因病骑自行车摔断三根肋骨的事以及治疗癌症的细节，实在可怜！ 上次“纪念徐世浙院士”一文在科学网上发表之后，徐的儿子 徐希恒先生发来电邮说：“ 母亲和我看到您在网路上纪念我父亲的文章，希望能向您表示感谢，能为我父亲在科大的遭遇说说话。”他还邀我去浙大见面。 见面总会有机会的！ 这本《徐世浙院士文集》的主要内容如下（很好的资料）： 目录 出版说明 序一 序二 坚守在应用地球物理学的学术家园 徐世浙院士生平 薄层矿体上磁测的定量解释 二度磁场、重力场解析延拓的实际方法 二度地形对电阻率法的影响 根据磁测结果计算磁性矿体截面积的一种方法 浅谈压磁效应 土地电与电极电位、接地电阻的关系 关于压磁效应和膨胀磁效应 古地磁的应用 二度直流电场的若干解答 地电阻率前兆机制探讨 地磁变化的不规律性对震磁效应的干扰 土地电机制的实验研究 介绍位场向外延拓的一个简单公式 评价地震预报效果的一种方法 薄板磁性体磁测资料的一种解释方法 有限单元法及在物探中的应用简介 电极电位对土地电的影响 地极长期迁移的古地磁证据 过滤电场对土地电的影响 二维磁场反演的幂级数法 磁场垂直分量z与水平分量H互相换算的有限单元法 应用有限元法计算磁各向异性体的磁异常 应用有限元法进行二维磁场计算、上延和换算 厚板磁性体反演的幂级数法 二维分块均匀物体的重力异常的计算 用边界单元法计算任意形体的重力异常及其导数 水平地形三维电场的边界单元解法 点源二维地电剖面的边界单元解法 用有限元法计算二维重力场垂直分量及重力位二阶导数 三维变密度体重力异常的正演 二维各向异性地电断面大地电磁场的有限元解法 边界单元法原理及其在地球物理勘探中的应用简介 任意形状均匀磁化体磁异常的计算 三维地形均匀各向异性岩石点电源电场的边界单元解法 三维地形上点电源电场的边界单元解法 水平地形三维地质体激发极化异常的计算 地形对大地电磁勘探的影响 电导率分段线性变化的水平层的点电源电场的数值解 水平地形二维地电断面点源电场的正演 电阻率法点电源二维地形改正的方法与实践 二维良导体的电阻率及面激发极化异常的计算 计算任意形体磁异常的边界元法 Quantitative Estimation of an Annual Variation of Apparent Resistivity 起伏地形二维位场上延与换算的边界单元法 海山磁性之反演 起伏地形下二维电阻率异常的正演 TWO-Dimensional Magnetotelluric Modeling by the Boundary Element Method 点源二维各向异性地电断面的直流电场有限元解法 点电源二维电场问题中傅氏反变换的波数k的选择 An Integral Formulation for Three-dimensional Terrain Modeling for ResistiVity Surveys 溶洞视电阻率异常计算 电阻率法二维地形改正的地质效果 多域地电断面均匀电场边界元法正演 复杂地电条件下点源三维电阻率模拟的新方法 磁场总梯度切线法反演二维磁性体的参数 用边界单元法进行保角变换的数值模拟 海山磁性反演精度的研究 非均匀磁化的海山磁性的反演 The Effect of Two-dimesional Terrain With Point Source on ResistiVity Surveys 用边界单元法模拟二维地温场的地形影响 边界单元法中的基本解——评王坚强同志的论文《三维电阻率模拟的边界元方法》 电阻率法中求解异常电位的有限单元法 电阻率测深一维反演的曲线对比法 电导率分层连续变化的水平层的大地电磁正演 The Curve Comparison Method for MT Inversion of One-Dimensional ContimlOUS Medium 大地电磁一维连续介质反演的曲线对比法 电导率分块连续变化的二维MT有限元模拟( Ⅰ ) 电导率分块连续变化的二维MT有限元模拟( Ⅱ ) 垂直断层附近三维不均匀体点源电场的边界单元法 Computation of Potential on Longitudinal Sections in a 2-D Electric Field with a Point Source 点源二维电场中纵剖面上电位的计算 Terrain Correction for Uniform Field in Resistivity Surveys 用边界元法模拟三维地形对MT场的影响 Modeling of 3-D Terrain Effect an MT Field Using BEM Numerical Modeling of 3-D Terrain Effect on MT Field 大地电磁场三维地形影响的数值模拟 大地电磁Hx型波二维地形改正的方法与效果 Modelling the 2D Terrain Effect on MT by the Boundary-element Method A Boundary Element Method for 2-D DC Modeling with a Point Current Sotlrce Resistivity Selection of the Wavenllmbers k Using an Optimization Method for the Inverse Fourier Transform in 2.5D Electrical Modelling CalCulation of Electrical Potentials along a Longitudinal Section of a 2-D Terrain 起伏地形位场快速延拓新方法 A New Method for Continuation of 3D Potential Fields to Horizontal Plane 将航磁异常从飞行高度向下延拓至地形线 切割法在陆东地区磁异常解释中的应用 位场延拓的积分-迭代法 位场大深度向下延拓 Modeling the 3D Terrain Effect：on MT by the Boundary Element Metlnod Surfer和Grapher在地球物理位场延拓可视化软件开发中的应用 从航磁资料延拓出海面磁场 迭代法与FFT法位场向下延拓效果的比较 对油气藏潮汐重力勘探的探讨 复电阻率测井的数值模拟研究 国外大地电磁研究现状 含气泥质砂岩频散特性的实验研究 基于位场分离与延拓的视密度反演 泥质砂岩复电导率模型研究 泥质砂岩复电阻率的频散特性实验 频率域航磁总场与梯度分量的转换研究 普光气田重力异常的视密度反演 三维地形大地电磁场的边界元模拟方法 视密度反演在东海及邻区重力异常解释中的应用 位场曲化平的插值一迭代法 位场向下延拓的波数域迭代法及其收敛性 位场向下延拓的迭代最小二乘法 位场向下延拓迭代法收敛性分析及稳健向下延拓方法研究 新疆色尔特能地区视密度和视磁性的反演 岩石复电阻率的“U”形曲线 重力归-化总梯度的稳定解法 重力异常三维反演——视密度成像方法技术的应用 本书编辑在推荐书中说：“中国科学院院士徐世浙先生是国际著名地球物理学家，在计算地球物理领域做出了卓越的贡献，并在国内外产生了深远的影响，从而在地学界享有盛誉。 《徐世浙院士文集》收集了徐世浙院士自20世纪60年代以来的大部分论著，它们代表了徐世浙院士在计算地球物理、古地磁、地震前兆预报、重磁位场延拓等领域的研究成果。因所收集论著源自多种学术期刊，且时间跨度大，各源刊格式标准可能不统一，本着尊重历史、忠于原著的原则，所用物理量单位、符号、图例、参考文献等尽量保留原文风貌，未做统一标准的处理。” 《文集》既是纪念，又是资料。祝贺！
地震孕育的构造环境、加卸载等具体条件是千差万别的，但是导致地震发生的基本物理过程却是相同的 ，这就是震源区固体介质的变形、损伤及破坏失稳过程（ Burridge and Knopoff ， 1967 ； Cao and Aki ， 1954 ； Carlson and Langer ， 1984 ）。因此，地震预测问题从本质上说是一个力学问题，对震源区固体非均匀脆性介质损伤破坏的规律性认识，是解决地震预测问题的关键。通常在大地震发生前，孕震区域的变形过程在时间上经历了一个由线性向非线性的变化；在空间上经历了由均匀向局部的变化；内部裂隙经历了由小到大、由少到多的变化；在整体力学状态上将由稳定状态向不稳定状态变化。 对地震孕育过程的观测（如地震学、电磁、重力的观测与反演）、震源机制解分析、震后断层破裂过程的反演等属于地球物理问题，即地球物理手段主要解决地球介质变化的观测、探测及数据反演等问题。 力学研究可以解决失稳准则问题，而地球物理学手段可以解决数据观测问题，两者的结合可解决强震的预测、预报问题。 参考 余怀忠，地震前兆物理模型与地震预测初步研究，中国地震局地质研究所博士后出站报告， 2006.
根据美国地球物理学家学会（SEG）安排，韩国地球物理学家将来中国讲学。他在四月上中旬先后会在中国石油大学、中国地质大学、BGP和成都理工大学访问讲学。讲学内容围绕四维地球物理综合解释方面的最新进展，有兴趣朋友可以联系参加。 题目“ Incorporating the Fourth Dimension into Geophysical Data Interpretation” 内容简介 Most geophysical methods aim to obtain spatially varying information concerning subsurface material properties. As a result their measured data and interpreted results are expressed in terms of spatial coordinates. However, in some special geophysical approaches, in addition to the spatial domain, the variations of material properties in non-spatial dimensions are studied. Typical techniques of this kind are time-lapse geophysical monitoring and the Spectral Induced Polarization (SIP). These two different methods can be viewed under the same interpretation angle in the sense that nonspatial dimension (time or frequency) is incorporated into the data measurement and interpretation procedures. This lecture introduces a new interpretation approach in which both the spatial and nonspatial dimensions are jointly considered within the geophysical processing procedure. Common practice was to treat this type of "complex" geophysical data as an assembly of individual spatial datasets. Consequently, individual interpretation of each dataset leads to retrieving individual spatial parameter models which are difficult to correlate along the new axis. In the new approach, both measured data and the subsurface model are considered in a unified coordinate system defined in both spatial and nonspatial domains. Subsequently the sets of the individual structural models and data in the space domain become respectively a single model and a single data set in the new global coordinate system. This allows us to obtain a subsurface structure in both space and nonspace domains using just a single inversion process, and furthermore to introduce á priori information along the nonspatial axis. Overall the new approach provides a more solid tool to interpret this type of data and allows the more realistic representation of the subsurface structure. The lecture will be balanced between presentation of the theoretical development and the demonstration of the practical applicability. This will be achieved mostly by presenting practical application of the approach into resistivity monitoring and SIP data coming from various environmental and engineering case studies such as hydro-geophysical experiments, assessment of ground re-enforcement works, ground condition changes caused by tunnel construction works, landslide, etc. 中国访问和讲学时间安排 12 April Beijing,China China University of Petroleum (Beijing) Geophysical Society 13 April Beijing,China China University of Geosciences, Geophysical Society (Beijing) 14 April Beijing,China BGP 18 April Chengdu,China Chengdu University of Technology 韩国地球物理学家Jung-Ho Kim简介 Jung-Ho Kim received a B.Eng. (1980) in mining engineering, an M.Eng. (1982) and a Ph.D. (1987) in applied geophysics from Seoul National University, South Korea. In 1982 he joined the Korean Institute of Geoscience and Mineral Resources (KIGAM) where he is currently working as a tenured researcher. His research interests were mainly focused in the modeling and inversion of electrical and electromagnetic methods and their applications to engineering and environmental problems. His early research efforts in the 90's on resistivity inversion have contributed to rendering 2D- and 3D- resistivity imaging popular and the most common geophysical method in the Korean geophysical community in 90s. Further, Kim's research in radar methods involved addressing borehole and directional radar techniques. His research interests also extended into addressing geophysical problems in more complicated environments, such as water covered areas, anisotropic environments, etc. His recent research interests lie with multiparametric and multidomain interpretation of electrical and electromagnetic data. As a result of his research achievements, the Ministry of Science and Technology of Korea selected his research group, Geo-electric Imaging Lab., to become a National Research Laboratory. He served the Korean Society of Exploration Geophysicists (KSEG) as the editor-in-chief from 2005 to 2007 and as a special guest editor of the journal jointly published by KSEG, the Society of Exploration Geophysicists of Japan and the Australian Society of Exploration Geophysicists from 2004 to 2007. He has been awarded the distinction of "Researcher of the Year" from three institutions: the Korean Institute of Mineral and Energy Resources Engineering (1998), KIGAM (2007) and KSEG (2009). He is also an adjunct professor at the Korea Advanced Institute of Science and Technology, where he is teaching geophysical imaging techniques.
标签: 地球物理学
