利用GIS绘制综合等震线

利用ＧＩＳ的拓扑叠加原理绘制了东南沿海地区的综合等震线,并将这种方法加以推广,编制了利用ＧＩＳ绘制综合等震线的通用程序,为工程地震研究中的烈度区划工作提供了方便途径     

中国东南沿海地区地震学异常度的探讨

以我国东南沿海地区的地震学资料为例,基于ＣＡＰＳｅｉｓ软件对Ｎ值,蠕变值、ｂ值、缺震值、η值、ＧＬ值、Ｃ值Ｄ值、Ｒｍ值等９项地震学预报指标进行空间扫描所得出的数据,以各参量对未来地震所表出的统计概率进行空间迭加。     

MapGIS在沈阳市地震影响信息系统中的应用

基于ＧＩＳ技术骼国产软件平台ＭａｐＧＩＳ进行二次开发,加入地震灾害预测及评估统计分析模块,邮对沈阳市地震影响和震害快速评估,以及信息查询、更新等功能,从而为沈阳市宏观估计地震及抗震救灾决策了依据。     

工程地震研究中的地震问题：——进展与动态

通过对地震发生模型、地震的震源特性，不确定性问题和ＧＩＳ技术的应用等４方面的阐述，提出了工程场地地震安全性评价的发展趋势及新理论、新技术的运用。     

地理信息系统（GIS）在地震危险性分析中的应用

简要介绍了地理信息系统（ＧＩＳ）的主要特征,地震危险性分析的一般步骤及其在地理信息系统下的实现方法。以东亚地区地震危险性分析为例,在ＧＩＳ平台下,利用ＧＩＳ的图层叠加和拼接,空间数据查询和综合分析功能,编制了东亚地区地震构造图,划分了该区的震源区,并得到了各潜在震源区相应的地震活动性参数。     

东南沿海地区的断裂与地震

中国东部,相对来说东南沿海地区的地震活动较为频繁,断裂构造也十分发育。地震活动与断裂构造有非常密切的关系,震中与断裂构造的空间分布也关系密切。通过对东南沿海大量震例的调查和研究,分析三组断裂与地震的关系,得出东南沿海地区东西向、北东向和北西向的三组断裂构造,分别构成了区内的衰减构造、控震构造和发震构造,形成了东南沿海陆缘构造活动带。     

地震危害研究

地震危害研究１２．１地震危害评估的方法本专题属于ＩＡＳＰＥＩ“地震危害损失研究小组”的工作进展报告会，在本届ＩＵＧＧ大会上，共交流了８篇研究报告。以色列的Ａ．ＳｈａＰｉｒａ报告了在研究小组选定的研究试点地区之一──以色列的Ｅｉｌａｔ的研究工作进展情况...     

基于AI和GIS的地震危险性分析方法在太原－临汾地区地震区划中的应用

作为不同区划方法编图结果对比分析研究的方案之一，本文介绍了基于人工智能技术（ＡＩ）的地震危险性智能辅助评估系统（ＳＨＥＳ）和基于地理信息系统（ＧＩＳ）的地震构造信息系统（ＳＴＩＳ）联合应用于太原－临汾地区地震区划的结果。为了对比分析衰减关系的影响，编图中也采用了借助误差向后传播算法建立的地震烈度衰减关系。     

利用GIS分析活动断裂与地震的相关性

利用ＧＩＳ的定距离空间分析功能,对活动断裂和历史地震及新生喧盆地的相关性进行了初步分析,确定了沿断裂带的历史地震次数,最大震级及ｂ值;同时对盆地的控制断裂和历史地震的地质构造背景进行了初步研究。这些均为研究活动断裂与地震的关系提供了新的途径和探索性的方法。     

乌鲁木齐市震害预测GIS地图数据库系统在ARC／INFO上的实现

引言ＧＩＳ为地理信息系统的英文缩写。它是以空间数据管理为基础的计算机技术系统,利用地学模型来分析空间数据,对地理环境与自然资源的信息进行管理,并对其动态变化进行预测和预报。１９６０年诺基尔·汤姆林逊博士提出把地图变成能用计算机处理的数字形式地图的新观点［１］,到３０年后的今天,ＧＩＳ地理信息系统已迅速发展。它的运用已渗透到了工业、农业、军事、科研各个领域。我国ＧＩＳ的发展始于８０年代初期,近１０年来发展很快,在地震科研中的应用正逐步拉开序幕。ＧＩＳ最大特点就在于它能把现实生活中的各种信息有机地与…     

利用GIS组件建立工程地震WebGIS系统

利用GIS软件组件建立了工程地震WebGIS系统。该系统采用浏览器 /服务器体系结构 ,实现了工程地震空间信息的网络共享和初步的协同工作。用户可以直接从网上通过浏览器来浏览、查询、分析和使用工程地震研究中的各类空间数据及GIS应用 ,同时还可以将需要的数据下载到本地机上使用或将自己的研究成果提交到远程服务器上发布 ,以实现共享。对地图在网上的传输显示速度问题和系统的安全性问题也采取适当的措施给以解     

Application of WebGIS in seismological study

Introduction Earthquake is a destructive natural disaster. Earthquake studies are very complex, which not only involves space and time of large size, but also requires vast amount of spatially referenced data, such as historical records, modern instrument data, scientific experiment data and a lot of other data coming from related subjects. GIS, as an integrating tool processing multi-source data, has become a key technology in earthquake studies. In recent years, many GIS application system…     

网络地理信息系统（WebGIS）在地震研究中的应用

介绍了网络地理信息系统（WebGIS）的概念、原理、实现技术和发展现状；讨论了WebGIS在地震研究中的重要作用和发展前景；开发了一个地震地质基础信息WebGIS应用系统．该系统基于浏览器／服务器体系结构，能够实现空间数据和GIS应用系统的网络共享和初步的协同工作．这一技术方案在地震研究领域具有广阔的应用前景，很值得推广．      

基于GIS的测震编目工作系统

在用ＦＯＸＢＡＳＥ,ＴｕｒｂｏＢａｓｉｃ等软件开发的测震编目系统的基础上,把ＧＩＳ技术中处理空间信息的一些独特优点应用到测震编目系统中,建立了以ＧＩＳ工具软件Ｍａｐｉｎｆｏ为开发平台的图形绘制查询分析配套系统。实现了与测震编目系统的数据对接。使对接后的系统在可视化查询、分析计算、图形制作、Ｂｕｆｅｒ分析、显示输出等方面有了很大的改进。整个系统具有良好的用户界面,有较强的数据兼容性和模块扩充性。     

GIS as a Tool for Seismological Data Processing

—?A computerized application of an integrated seismological GIS model is presented. An object oriented approach of the GIS topology is introduced and the special functions and features of this system are described. A network topology was selected to simulate the network characteristics of seismological data management and analysis. Each seismological entity is considered as a graphical data object, which is associated to other objects by predefined relationships. The graphical user interface introduced by GIS enables to handle seismological software routines and data in a more intuitive way. Examples of interactive processing of seismic waveforms for detecting, locating and characterizing seismic events using GIS visualization capabilities are presented. The benefits of this system during a passive seismic survey in the framework of the CTBT are highlighted.     

Seismotectonic database of Turkey

Turkey is located in one of the most seismically active regions in the world. Characterizing seismic source zones in this region requires evaluation and integration of geological, geophysical, seismological and geodetical data. This first seismotectonic database for Turkey presented herein was prepared, under the framework of the National Earthquake Strategy and Action Plan—2023. The geographic information system (GIS)-based database includes maps of active faults, catalogues of instrumental and historical earthquakes, moment tensor solutions and data on crustal thickness. On the basis of these data, 18 major seismotectonic zones were delineated for Turkey and the surrounding region. The compilation and storage of the seismotectonic data sets in a digital GIS will allow analyses and systematic updates as new data accrete over time.     

台湾海峡7.3级地震及其震后地震趋势研究

通过对台海海峡７．３级地震序列研究表明，该地震是一次板内的主－余震型地震，震源机制解确定此次地震是ＮＷ走向断裂的走滑正断层错动；震区地震构造背景和震前的地震活动异常图像与我国东南沿海成一体性，表明属于我国东南涡海地震带的地震活动震前出现多项地震学异常。震兆演化过程存在明显的阶段性，本次地震有一寂的可预测性，根据地震活动分幕结果，认为近期东南沿海的一系列中强震活动属于该带第五活跃幕的地震群体活动并预     

样本条件变化对地震学参数计算结果的影响

选取1970年以来中国大陆东南地区5.0级以上、 华北地区5.5级以上、 西部地区7.0级以上地震作为研究对象, 并选择了8种物理意义明确、 独立性较强的地震学指标进行全时空的异常扫描, 通过改变采样时间域尺度、 空间域滑移及强度区间等样本条件, 分析对地震学指标时间进程计算结果的影响, 并讨论了空间扫描滑移方向相对于区域主应力方向的变化对参数扫描结果的影响。 结果表明, 空间参数的改变对扫描结果的影响最大, 并给出了不同震级地震学指标在扫描中影响最小的空间范围和时空扫描的最佳条件参数。     

Response spectral relationships for rock sites derived from the component attenuation model

The seismological model was developed initially from the fundamental relationship between earthquake ground motion properties and the seismic moment generated at the source of the earthquake. Following two decades of continuous seismological research in the United States, seismological models which realistically account for both the source and path effects on the seismic shear waves have been developed and their accuracy rigorously verified (particularly in the long and medium period ranges). An important finding from the seismological research by Atkinson and Boore and their co‐investigators is the similarity of the average frequency characteristics of seismic waves generated at the source between the seemingly very different seismic environments of Eastern and Western North America (ENA and WNA, respectively). A generic definition of the average source properties of earthquakes has therefore been postulated, referred to herein as the generic source model. Further, the generic ‘hard rock’ crustal model which is characteristic of ENA and the generic ‘rock’ crustal model characteristic of WNA have been developed to combine with the generic source model, hence enabling simulations to be made of the important path‐related modifications to ground motions arising from different types of crustal rock materials. It has been found that the anelastic contribution to whole path attenuation is consistent between the ENA and WNA models, for earthquake ground motions (response spectral velocities and displacements) in the near and medium fields, indicating that differences in the ENA and WNA motions arise principally from the other forms of path‐related modifications, namely the mid‐crust amplification and the combined effect of the upper‐crust amplification and attenuation, both of which are significant only for the generic WNA ‘rock’ earthquake ground motions. This paper aims to demonstrate the effective utilization of the latest seismological model, comprising the generic source and crustal models, to develop a response spectral attenuation model for direct engineering applications. The developed attenuation model also comprises a source factor and several crustal (wave‐path modification) component factors, and thus has also been termed herein the component attenuation model (CAM). Generic attenuation relationships in CAM, which embrace both ENA and WNA conditions, have been developed using stochastic simulations. The crustal classification of a region outside North America can be based upon regional seismological and geological information. CAM is particularly useful for areas where local strong motion data are lacking for satisfactory empirical modelling. In the companion paper entitled ‘response spectrum modelling for rock sites in low and moderate seismicity regions combining velocity, displacement and acceleration predictions’, the CAM procedure has been incorporated into a response spectrum model which can be used to effectively define the seismic hazard of bedrock sites in low and moderate seismicity regions. This paper and the companion paper constitute the basis of a long‐term objective of the authors, to develop and effectively utilize the seismological model for engineering applications worldwide.     

膨胀土与地形变

本文根据南京地震台短水准场地膨胀土研究的实际资料,指出了在膨胀土发育区进行地形变观测、地震地质和震害调查、烈度小区划等项工作时,必须考虑到膨胀土特性这个因素,以避免失误。