Strong Motion Data in India for Earthquake Hazard Mitigation

作为1978年5月2日至5日在夏威夷举行的强震仪器阵列国际研讨会以及随后的讨论的结果，美国和印度建立了一个合作项目，在印度组织和安装强震加速仪阵列。1983年8月，在1905年印度康格拉大地震的震中地区完成了49个加速站的安装。自1983年以来，这个阵列一直由印度鲁尔基大学的工作人员维护。后来，在1897年发生8.7级大地震的阿萨姆邦西隆地区安装了另一个由50个监测站组成的强震阵列。诸如此类的阵列在能够记录大地震时提供了宝贵的数据，这些数据用于更好地了解引起地震的过程，大地震引起的地面震动，对特定建筑工地土壤结构稳定性的影响，该工地建筑物或结构的反应，以及土壤结构和建筑物的破坏和倒塌可能造成的破坏和生命损失。由于大地震是罕见的事件，在世界上任何预计在未来10年或20年内发生强震的地方放置强震阵列是至关重要的。这一行动将有助于从印度的这两个关键阵列获取此类数据，其中一个是根据美国和印度之间的合作协议安装的。这一行动的目的是继续并扩大这一努力的成果，并将印度现有的强震数据存档、数字化和发布，以便为未来的研究及其应用建立一个完整详细的数据收集计划：所有参与减少地震危险的科学家和工程师都可以从这项工作中受益，因为他们的分析和工程应用都有一个可靠的实验基础。

As a result of the International Workshop on Strong-Motion Earthquake Instrument Arrays in Hawaii, May 2-5, 1978, and subsequent discussions, a cooperative U.S.-India project was established to organize and install an earthquake strong motion accelerograph array in India. In August 1983, installation of 49 accelerograph stations was completed in the epicentral region of the Great Kangra Earthquake of 1905 in India. Since 1983, this array has been maintained by the staff of the University of Roorkee, India. Later, another strong motion array of 50 stations was installed in the area of Shillong, Assam, where a great earthquake of magnitude 8.7 occurred in 1897. Arrays such as these provide invaluable data whenever they are able to record a large earthquake, data which is used to better understand the processes causing earthquakes, the ground shaking resulting from large earthquakes, the effect on the stability of soil structures at a particular construction site, the response of a building or structure at that site, and the damage and loss of life that could result from damage and collapse of soil structures and buildings. Since large earthquakes are rare events, it is essential that strong motion arrays be placed in any place in the world where strong earthquakes are expected within the next decade or two. This action will assist in obtaining such data from these two crucial arrays in India, one of which was installed as cooperative agreement between the U.S. and India. The purpose of this action is to continue and to extend the accomplishments of this effort and to archive, digitize, and publish already available strong motion data in India, so that a complete detailed data gathering program can be set up for future research and its applications: all scientists and engineers involved in earthquake hazard reduction can benefit from this effort by having a sound experimental basis for their analyses and engineering applications.