Comparative study on crustal earthquakes along active faults

沿活动断裂的地壳地震对比研究

• 批准号: 08041093
• 负责人: HASEGAWA Akira
• 金额: $ 2.82万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for international Scientific Research
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08041093/
• 关键词: intraplate earthquake; north-south seismic belt; data acquisition system; digital wave form; GPS; crustal deformation; plate tectonics; 直下型地震; 自動処理システム; ドラムレコーダ; 歪測定; コーダQ

Ningxia Hui Autonomous Region is located in the junction zone of Tibet block, North China block and Ordos block. Two GPS campaigns were operated at five newly constructed stations in 1997, which have revealed that Tibet block was moved toward northeast with a rate of about 3cm per year due to the collision between the Indian and Eurasian plates.In 1997, a PC-based data acquisition system for seismographs was installed at the Seismological Bureau of Ningxia Hui Autonomous Region, Yinchuan, China by Tohoku University, which has enabled to locate hypocenters accurately and to record digital wave form data. Preliminaly investigations of waveforms show the existence of some distinctive later phases, which are thought to be reflectors in the crust. The quality of waveform data is so high that it may be possible to be used for future researches of source process of earthquakes, seismic tomography, and so on.

宁夏回族自治区位于西藏地块、华北地块和鄂尔多斯地块的结合带。1997年在5个新建台站进行了两次GPS观测，观测结果表明，由于印度板块与欧亚板块的碰撞，西藏地块以每年约3厘米的速度向东北方向移动。1997年，东北大学在宁夏回族自治区地震局安装了一套基于PC的地震仪数据采集系统，其使得能够精确地定位震源并记录数字波形数据。波形的初步研究表明，存在一些独特的后期阶段，这些阶段被认为是地壳中的反射体。波形数据质量高，有可能用于今后的震源过程研究、地震层析成像等。

项目成果

海野.他: "1996年8月11日秋田・宮城県境付近の地震について" 東北地域災害科学研究. 33. 17-25 (1997)

海野等人：“关于 1996 年 8 月 11 日秋田县和宫城县边界附近的地震”，东北地区灾害科学研究，33. 17-25 (1997)。

Zheng Sihua: "Focal dopth of earthquakes in the Qing haixizang plateau and its tectonic implication" Earthquake Research in China. 10 1. 17-26 (1996)

郑思华：“青藏高原地震震源深度及其构造意义”，中国地震研究。

S.Zheng: "Focal depth of Earthquakes in the Qinghai-Xizog Plateau and its tectonic iruphication"Earthquate Researd in China. 10. 17-26 (1996)

郑S.：“青藏高原地震震源深度及其构造断裂”，中国地震研究。

Guillermo et al.: "Study of the State of Stress around Earthquake Swarm Areas Using P-wave Polarity Data : Nikko-Ashio and Teishi Noll Area"J. Phys. Earth. 45. 29-40 (1997)

Guillermo 等人：“使用 P 波极性数据研究地震群地区周围的应力状态：日光足尾和 Teishi Noll 地区”J。

Zheng Sihua: "Focal Depth of Earthquakes in the Qinghai-Xizang Plateau and Its Tectonic Implication"Earthquake Research in China. Vol.10, No.1. 17-26 (1996)

郑斯华：“青藏高原地震震源深度及其构造意义”中国地震研究。