Characteristics of crust vertical deformation and seismic risk analysis in Liaoning area
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摘要: 利用辽宁地区三期复测水准资料，计算得出1988—1998年和1998—2016年两个时段的地壳垂直形变速率, 并绘制相应的地壳垂直形变速率矢量图和等值线图.结合辽宁地区的区域地质背景及构造断裂活动性，分析了区域地壳垂直形变特征与地震活动性之间的相关性，明确了该区域的整体地壳垂直形变趋势及需重点关注的区域.结果表明：海城MS7.3地震后较长时间内，辽宁地区整体以继承性运动为主，辽东隆起和辽西隆起以上升为主，下辽河断陷带下沉；1998年后，辽宁地区整体形变差异量减小，该地区垂直形变正趋于稳态，垂直形变速率梯度高值区仍集中于下辽河断陷带与辽东隆起、辽西隆起的交界地带，因此该区域的潜在危险性较高，需要持续并重点关注.Abstract: Based on the three-issue repeated measurement data of the Liaoning area, we calculate the vertical strain rate during 1988-1998 and 1998-2016, and draw the corresponding vector graph and isoline map of the vertical deformation rate. The correlation between vertical deformation characteristics and seismic activities is analyzed combining the geological background and tectonic activity in Liaoning area, thus to identify the overall trend of deformation and to require critical attention to the areas. The results showed that Liaoning region represents as inheritance movement, Liaodong and Liaoxi uplifts exhibit an upward trend, Liaohe down-faulted zone showed subsidence for a long time after MS7.3 Haicheng earthquake; the overall amount of difference of deformation in Liao-ning area decreased since 1998, the region's vertical deformation tends to be stable. The high gradient zone of deformation rate is still concentrated in the border of Liaohe down-faulted zone, Liaodong and Liaoxi area, and then these areas exist high potential risk and need sustained and focused attention.
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Keywords:
- vertical deformation /
- tectonic activity /
- gradient /
- seismic activity
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图 1 辽宁地区区域精密水准测点、水准剖面及断裂分布
Figure 1. Distribution of regional precision leveling points, leveling profiles and faults in Liaoning area
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图 2 1988—1998年辽宁地区地壳垂直形变速率矢量图(a)与等值线(b)图
Figure 2. Vector graph (a) and isoline map (b) of vertical deformation in Liaoning area from 1988 to 1998
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图 3 1998—2016年辽宁地区地壳垂直形变矢量图(a)及等值线图(b)
Figure 3. Vector graph (a) and isoline map (b) of vertical deformation in Liaoning area from 1998 to 2016
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图 4 朝阳—清河门—石山水准剖面地壳垂直形变速率变化图
Figure 4. Vertical deformation rate of Chaoyang-Qinghemen-Shishan leveling profile
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图 5 盘山—海城—岫岩—大孤山水准剖面地壳垂直形变速率变化图
Figure 5. Vertical deformation rate of Panshan-Haicheng-Xiuyan-Dagushan leveling profile
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高常波, 钟以章. 2000. 1999年辽宁海城—岫岩5.6级地震的地质构造背景和发震构造[J].地震地质, 22(4): 405-412. http://d.wanfangdata.com.cn/Reference.aspx?id=Periodical... Gao C B, Zhong Y Z. 2000. Geological background and seismogenic fault of the Haicheng-Xiuyan M5.6 earthquake of November 29, 1999[J]. Seismology and Geology, 22(4): 405-412 (in Chinese). http://d.wanfangdata.com.cn/Reference.aspx?id=Periodical...
郭良迁, 马青, 杜雪松, 陈聚忠, 张俊青, 郑智江. 2012.辽宁地区地壳垂直形变演化特征[J].大地测量与地球动力学, 32(3): 17-21. https://www.wenkuxiazai.com/doc/8a801c41c850ad02de804129... Guo L Q, Ma Q, Du X S, Chen J Z, Zhang J Q, Zheng Z J. 2012. Evolutional characteristics of vertical crustal deformation in Liaoning area[J]. Journal of Geodesy and Geodynamics, 32(3): 17-21 (in Chinese). https://www.wenkuxiazai.com/doc/8a801c41c850ad02de804129...
黄立人, 杨国华, 刘天奎. 1989.用速率面拟合法研究华北部分地区的现今地壳垂直运动[J].地震形变与地震, 9(3): 26-35. http://www.cnki.com.cn/Article/CJFDTOTAL-GYDZ603.003.htm Huang L R, Yang G H, Liu T K. 1989. The study of present vertical crustal movements in part of North China by the fitting method of velocity surface[J]. Crustal Deformation and Earthquake, 9(3): 26-35 (in Chinese). http://www.cnki.com.cn/Article/CJFDTOTAL-GYDZ603.003.htm
姜岩. 2016. 辽东地区主干断裂的特征及三维地质模型[D]. 长春: 吉林大学: 5-10. Jiang Y. 2016. Geological Features of Main Faults and Three-Dimensional[D]. Changchun: Jilin University: 5-10 (in Chinese).
孔繁强, 林玉祥. 1991.辽宁地区垂直形变场特征再研究[J].东北地震研究, 7(1): 21-27. http://www.cnki.com.cn/Article/CJFDTotal-DDYJ198601012.htm Kong F Q, Lin Y X. 1991. The further research on characteristics of the vertical deformation field in Liaoning area[J]. Northeastern Seismological Research, 7(1): 21-27 (in Chinese). http://www.cnki.com.cn/Article/CJFDTotal-DDYJ198601012.htm
赖锡安, 黄立人, 徐菊生. 2004.中国大陆现今地壳运动[M].北京:地震出版社: 4-15. Lai X A, Huang L R, Xu J S. 2004. Characteristics of Recent Crustal Movement of China Mainland[M]. Beijing: Seismological Press: 4-15 (in Chinese).
马文涛, 徐锡伟, 于贵华, 张兰凤. 2004.首都圈地区的地震活动性与断裂的关系[J].地震地质, 26(2): 293-304. http://www.doc88.com/p-130472880571.html Ma W T, Xu X W, Yu G H, Zhang L F. 2004. The relationship between seismic activity and fault activity in Beijing region[J]. Seismology and Geology, 26(2): 293-304 (in Chinese). http://www.doc88.com/p-130472880571.html
王若柏, 洪汉净, 许忠淮, 耿世昌, 孙东平, 韩月萍. 1995.华北地区地壳垂直形变场及动态演化特征[J].地震学报, 17(2): 148-155. http://www.dzxb.org/Magazine/Show?id=27760 Wang R B, Hong H J, Xu Z H, Geng S C, Sun D P, Han Y P. 1995. Field of vertical crustal deformation in North China and the feature of its dynamic evolution[J]. Acta Seismologica Sinica, 8(2): 185-194. http://www.dzxb.org/Magazine/Show?id=27760
王若柏, 顾国华, 徐杰, 周伟. 2004.张家口—渤海地震构造带的地壳形变研究[J].地震地质, 26(4): 587-593. http://www.doc88.com/p-909961850761.html Wang R B, Guo G H, Xu J, Zhou W. 2004. Discussion on characteristics of crustal deformation along the Zhangjiakou-Bohai seismotectonic zone[J]. Seismology and Geology, 26(4): 587-593 (in Chinese). http://www.doc88.com/p-909961850761.html
吴波. 2015. 环渤海地区地壳形变特征研究[D]. 北京: 中国测绘科学研究院: 9-15. Wu B. 2016. Research on the Characteristics of Crustal Deformation in Bohai Rim Region[D]. Beijing: Chinese Academy of Surveying and Mapping: 9-15 (in Chinese).
徐东卓, 焦守涛, 朱传宝, 孙非非, 管见, 尹海权. 2017.芦山MS7.0地震前龙门山断裂带西南段区域形变特征分析及发震模型探讨[J].地质学报, 91(10): 2175-2184. doi: 10.3969/j.issn.0001-5717.2017.10.002 Xu D Z, Jiao S T, Zhu C B, Sun F F, Guan J, Yin H Q. 2017. Regional deformation characteristics in the southwest segment of Longmen mountain fault zone before Lushan MS7.0 earthquake and possibly induced earthquake model[J].Acta Geologica Sinica, 91(10): 2175-2184 (in Chinese). doi: 10.3969/j.issn.0001-5717.2017.10.002
应绍奋, 张祖胜, 耿士昌, 陈德民, 王泽文, 何肇雄, 夏淑辉, 王纪尧. 1988.中国大陆垂直向现代运动基本特征[J].中国地震, 4(4): 1-8. Ying S F, Zhang Z S, Geng S C, Chen D M, Wang Z W, He Z X, Xia S H, Wang J Y. 1988. Basic characteristics of recent vertical crustal movement of China Mainland[J]. Earthquake Research in China, 4(4): 1-8 (in Chinese).
Xu D Z, Zhu C B, Meng X G, Li Y, Sun Q K, Zhang K. 2016. Analysis of fault activity characteristics in the northern margin of Tibetan Plateau before Qinghai Menyuan MS6.4 earthquake[J].Geodesy and Geodynamics, 7(4): 261-267. doi: 10.1016/j.geog.2016.07.001
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