Briestenský M, Thinová L, Praksová R, Stemberk J, Rowberry M D, Knejflová Z
Institute of Rock Structure and Mechanics, v.v.i., Academy of Sciences of the Czech Republic, V Holešovičkách 41, Prague 8 182 09, Czech Republic
Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, Prague 1 115 19, Czech Republic.
Radiat Prot Dosimetry. 2014 Jul;160(1-3):78-82. doi: 10.1093/rpd/ncu090. Epub 2014 Apr 7.
Tectonic instability may be measured directly using extensometers installed across active faults or it may be indicated by anomalous natural gas concentrations in the vicinity of active faults. This paper presents the results of fault displacement monitoring at two sites in the Bohemian Massif and Western Carpathians. These data have been supplemented by radon monitoring in the Mladeč Caves and by carbon dioxide monitoring in the Zbrašov Aragonite Caves. A significant period of tectonic instability is indicated by changes in the fault displacement trends and by anomalous radon and carbon dioxide concentrations. This was recorded around the time of the catastrophic MW=9.0 Tōhoku Earthquake, which hit eastern Japan on 11 March 2011. It is tentatively suggested that the Tōhoku Earthquake in the Pacific Ocean and the unusual geodynamic activity recorded in the Bohemian Massif and Western Carpathians both reflect contemporaneous global tectonic changes.
构造不稳定可以通过安装在活动断层上的伸缩仪直接测量，或者也可以通过活动断层附近异常的天然气浓度来表明。本文展示了在波希米亚地块和西喀尔巴阡山脉两个地点进行的断层位移监测结果。这些数据通过姆拉代克洞穴的氡监测和兹布拉绍夫文石洞穴的二氧化碳监测得到了补充。断层位移趋势的变化以及异常的氡和二氧化碳浓度表明了一段显著的构造不稳定时期。这一情况记录于2011年3月11日袭击日本东部的灾难性Mw = 9.0级东北地震发生前后。初步推测，太平洋的东北地震以及在波希米亚地块和西喀尔巴阡山脉记录到的异常地球动力学活动都反映了同期的全球构造变化。
