Observation scheme for recent micromovements in the northern part of the Upper Rhine Graben (Germany) and its integration into EU tectonic 3D micrommovement monitoring network

德国莱茵河上游地堑北部近期微运动观测方案及其纳入欧盟构造3D微运动监测网络

• 批准号: 58877342
• 负责人: Professor Dr. Andreas Hoppe
• 金额: --
• 依托单位: Institut für Angewandte Geowissenschaften (IAG)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2012-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/58877342?language=en
• 关键词: Observation; scheme; recent; micromovements; northern

The Upper Rhine Graben in Germany is a still subsiding tectonic unit with an active sinistral strike slip component. It is also a densely populated area with high hazard of earthquake and intense construction activities. In recent years its geothermal energy attracted numerous drilling activities (and in December 2006 man-made earthquakes in the southern Rhine Graben). High precision measurements on dividing planes like faults and joints can help to decipher micro-movements and the mechanisms by 3D monitoring of active tectonic structures. Outcrops to install such devices are rare. So it has been an opportunity to install a measuring station for the 3D monitoring of micromovements when in the city of Darmstadt the eastern master fault has been exposed recently. Embedded in an already existing system of long term monitoring in Europe working successfully for more than 25 years (cf. Tacheva & Košťák 1986, Stemberk et al. 2006) the Rhine Graben allows the comparison of tectonically active regions with more stable parts of the European crust like Bohemia where a measuring program by the Czech Academy of Sciences is proposed simultaneously. Additionally, existing precise levelling data for Darmstadt and surrounding areas will be evaluated to set the measurement of tectonic micromovement into a broad geodynamic context.

德国上莱茵河地堑是一个仍在沉降的构造单元，具有活跃的左旋走滑分量。同时，该区人口稠密，地震危险性高，建筑活动频繁。近年来，它的地热能吸引了大量的钻探活动（2006年12月，莱茵河地堑南部发生了人为地震）。对断层和节理等分界面的高精度测量有助于通过对活动构造的三维监测来解释微观运动及其机制。安装这种装置的露头很少。因此，最近在达姆施塔特市的东部主断层被揭露出来时，安装一个测量站来进行微观运动的三维监测是一个机会。嵌入欧洲现有的长期监测系统，成功运行超过25年（参见Tacheva & Koštenák 1986，Stemberk et al. 2006），莱茵河地堑可以将构造活动区与欧洲地壳更稳定的部分（如波希米亚）进行比较，捷克科学院同时提出了测量计划。此外，将对达姆施塔特及周边地区现有的精确水准测量数据进行评估，以便在广泛的地球动力学背景下测量构造微运动。