Abstract

Quantitative estimates of present-day lateral ground surface displacement rates in southern Yakutia were obtained during recent years by setting up the first (and the only so far) stations of continuous GPS observation at the town of Neryungri (NRG) and at the town of Chul’man (CHL3). Both stations are in the southern margin of the Eurasian plate, near the system of active structures that separate it from the Amur plate. For an estimate of relative displacement we chose a period of joint operation at these two GPS stations, viz., from June 29, 2015 to December 1, 2016. The rate of displacement at Neryungri as calculated for a 5-year term (between October 27, 2011 and October 1, 2016) was 21.83 ± 0.73 mm/yr in the east–west direction and 12.26 ± 0.25 mm/yr in the north–south direction based on the ITRF2014 frame. The resulting values are little different from the theoretical rates of motion for the Eurasian plate at this point. The difference between measured rates and those for the well-known kinematic model for the Eurasian plate as developed in this study is |0.5| mm/yr for the east component and |1.0| mm/yr for the north component; these values are in agreement with results of other authors (Kreemer et al., 2014; Ashurkov et al., 2016). The accuracy of determination for the rates of lateral ground motion at CHL3 should enhanced by making measurements synchronously with the NRG2 station.

中文翻译：

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南雅库特煤盆地活动断层的现代位移：GPS观测

摘要

近年来，通过在Neryungri（NRG）镇和Chul镇建立了第一个（也是迄今为止唯一的）连续GPS观测站，对雅库特南部的当前横向地表位移速率进行了定量估算。人（CHL3）。这两个站都位于欧亚板块的南部边缘，靠近将其与阿穆尔板块分开的活动构造系统。为了估算相对位移，我们选择了这两个GPS站的联合运行时间，即2015年6月29日至2016年12月1日。Neryungri的位移率为5年（10月至10月之间）根据ITRF2014框架，东西方方向为21.83±0.73毫米/年，南北方向为12.26±0.25毫米/年。在这一点上，所得值与欧亚板块的理论运动速率几乎没有差异。在本研究中开发的测得速率与欧亚板块众所周知的运动学模型的速率之间的差为| 0.5 |。东部部分为毫米/年，| 1.0 | 北方部分为毫米/年；这些值与其他作者的结果一致（Kreemer等，2014； Ashurkov等，2016）。应通过与NRG2站同步进行测量，来提高确定CHL3处横向地面运动速率的准确性。0 | 北方部分为毫米/年；这些值与其他作者的结果一致（Kreemer等，2014； Ashurkov等，2016）。应通过与NRG2站同步进行测量，来提高确定CHL3处横向地面运动速率的准确性。0 | 北方部分为毫米/年；这些值与其他作者的结果一致（Kreemer等，2014； Ashurkov等，2016）。应通过与NRG2站同步进行测量，来提高确定CHL3处横向地面运动速率的准确性。