The U.S./China Joint Research on the Variation of Gravity and the Occurrence of Earthquakes in the BTTZ Region, P.R.C.

中美两国BTTZ地区重力变化与地震发生联合研究

• 批准号: 9118025
• 负责人: John Kuo
• 金额: $ 13.08万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-09-01 至 1999-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9118025&HistoricalAwards=false
• 关键词: U.S.; China; Joint; Research; Variation

This research is to continue gravity monitoring as part of an earthquake hazards program in the Beijing region of China. Gravity is monitored by means of eight Geodynamics TRG-1 tidal gravimeters installed at semi-permanent sites, and at a number of stations visited periodically with three LaCoste-Romberg Model G gravimeters. The monitoring program was begun in 1981 as part of the U.S./PRC Protocol on Earthquake Studies and has continued to the present, thus forming a valuable continuous record exceeding ten years. Gravity is related to elevation changes and subcrustal mass movements that have been proposed to be a part of the process of preparation for earthquakes. This region surrounding Beijing is designated by the PRC earthquake hazard program as one of high probability for the next major earthquake in China. This research is a component of the National Earthquake Hazard Reduction Program and the U.S./PRC Earthquake Studies Protocol.

这项研究将继续重力监测作为中国北京地区地震灾害项目的一部分。重力监测是通过安装在半永久性站点的8台地球动力学TRG-1潮汐重力仪，以及定期访问的若干站点的3台lacoster - romberg Model G重力仪进行的。该监测项目始于1981年，作为美国/中华人民共和国地震研究议定书的一部分，一直持续到现在，从而形成了超过十年的有价值的连续记录。重力与海拔的变化和地壳下物质的运动有关，这被认为是地震准备过程的一部分。北京周边地区被中华人民共和国地震灾害规划指定为中国下一次大地震的高概率地区之一。这项研究是国家减少地震危害计划和美国/中华人民共和国地震研究议定书的组成部分。