Present tectonics of the southeast of Russia as seen from GPS observations
Present tectonics of the southeast of Russia as seen from GPS observations
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DOI：
10.1111/j.1365-246x.2010.04871.x
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发表时间：
2011-02
影响因子：
2.8
通讯作者：
N. Shestakov;M. Gerasimenko;H. Takahashi;M. Kasahara;V. A. Bormotov;V. G. Bykov;A. Kolomiets;G. Gerasimov;N. Vasilenko;A. Prytkov;V. Timofeev;D. G. Ardyukov;T. Kato
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文献类型：
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作者：
N. Shestakov;M. Gerasimenko;H. Takahashi;M. Kasahara;V. A. Bormotov;V. G. Bykov;A. Kolomiets;G. Gerasimov;N. Vasilenko;A. Prytkov;V. Timofeev;D. G. Ardyukov;T. Kato
摘要在过去的12年里，利用GPS技术对东北亚的现今构造进行了广泛的研究。然而，俄罗斯东南部假想的阿穆尔期微板块东北边界附近的地壳速度场尚未确定。1997年2月至2009年4月期间在区域地球动力学网络地点收集的全球定位系统数据被用来估计该地区最近的地球动力学活动。计算的GPS速度表明，调查区域的内部(网点之间)和外部(相对于欧亚构造板块)几乎是稳定的。我们没有发现明显的证据表明整个锡霍特-阿林中央断裂有任何值得注意的现代构造活动。该断裂是决定研究区地质构造的主要构造单元。所获得的结果表明，与不可分平板方法相比，所提出的阿穆里亚微板存在几个独立的块和更复杂的结构。
SUMMARY The present tectonics of Northeast Asia has been extensively investigated during the last 12 yr by using GPS techniques. Nevertheless, crustal velocity field of the southeast of Russia near the northeastern boundaries of the hypothesized Amurian microplate has not been defined yet. The GPS data collected between 1997 February and 2009 April at sites of the regional geodynamic network were used to estimate the recent geodynamic activity of this area. The calculated GPS velocities indicate almost internal (between network sites) and external (with respect to the Eurasian tectonic plate) stability of the investigated region. We have not found clear evidences of any notable present-day tectonic activity of the Central Sikhote-Alin Fault as a whole. This fault is the main tectonic unit that determines the geological structure of the investigated region. The obtained results speak in favour of the existence of a few separate blocks and a more sophisticated structure of the proposed Amurian microplate in comparison with an indivisible plate approach.