基于GNSS数据的三种应变计算方法在青藏高原东南缘地区的应用

doi:10.12196/j.issn.1000-3274.2021.04.004

Abstract

Abstract: The methods of using the GNSS velocity field to solve the strain rate have multiple characteristics, which can be divided into mathematical methods and physical methods. This paper selects three mathematical methods to solve the strain rate: Least Squares Collocation Method, Multi-scale Spherical Wavelet Method, Gussian Weighted Interpolation Method, to resolve the GNSS velocity field and uniform GNSS velocity field on the southeastern margin of Tibet Plateau from 1999 to 2019 (97°E~106°E, 21°N~30°N), and the applicability characteristics of the above three methods in this area is discussed. By analyzing the results of principal strain rate (maximum/minimum), maximum shear strain rate, and surface strain rate obtained from two sets of different data distributions, we found that the strain parameters obtained by multi-scale spherical wavelet method have higher resolution in the southeastern margin of Tibet Plateau. In the high-density data distribution, the spatial deformation characteristics in a small area can be reflected in detail, which is helpful to determine the fault deformation characteristics. The result only represents the studied area on the southeastern margin of Tibet Plateau, and the selection of calculation methods for other areas still needs to consider the conditions of the structural deformation background and the distribution density of measurement points.

Key words: GNSS data, Strain rate, Least squares collocation method, Multi-scale spherical wavelet method, Gussian weighted interpolation method

CLC Number:

P315.7

JIN Yang, JIN Hong-lin, GAO Yuan, HUANG Xing. Application of Three Strain Calculation Methods Based on GNSS Data in the Southeastern Margin of Tibet Plateau[J]. EARTHQUAKE, 2021, 41(4): 57-67.

References

[1] 江在森, 武艳强, 邹镇宇, 等. GNSS在中国大陆的地震预测应用研究进展与展望[J]. 中国地震, 2020, 36(4): 693-707.
JIANG Zai-sen, WU Yan-qiang, ZOU Zhen-yu, et al. Progress and prospect of earthquake forecasting based on GNSS data in China[J]. Earthquake Research in China, 2020, 36(4): 693-707 (in Chinese).
[2] 王静. GPS应变率场计算方法研究进展[J]. 地震, 2019, 39(2): 122-134.
WANG Jing. Calculation method of strain rate field based on GPS observation[J]. Earthquake, 2019, 39(2): 122-134 (in Chinese).
[3] 武艳强, 江在森, 杨国华, 等. 利用最小二乘配置在球面上整体解算GPS应变场的方法及应用[J]. 地球物理学报, 2009, 52(7): 1707-1714.
WU Yan-qiang, JIANG Zai-sen, YANG Guo-hua, et al. The application and method of GPS strain calculation in whole mode using least square collocation in sphere surface[J]. Chinese Journal of Geophysics, 2009, 52(7): 1707-1714 (in Chinese).
[4] 张希, 江在森, 王双绪, 等. 川滇地区地壳水平运动的弹性块体边界负位错模型与强震地点预测[J]. 地震研究, 2005, 28(2): 119-124.
ZHANG Xi, JIANG Zai-sen, WANG Shuang-xu, et al. Negative dislocation model of elastic block boundary of horizontal crustal movement and the prediction of strong earthquake position in Sichuan-Yunnan area[J]. Journal of Seismological Research, 2005, 28(2): 119-124 (in Chinese).
[5] 赵静, 江在森, 武艳强, 等. Defnode负位错模型反演结果的可靠性和稳定性分析[J]. 大地测量与地球动力学, 2013, 33(1): 21-24.
ZHAO Jing, JIANG Zai-sen, WU Yan-qiang, et al. Analysis of reliability and stability of inversion result with negative dislocation model of Defnode[J]. Journal of Geodesy and Geodynamics, 2013, 33(1): 21-24 (in Chinese).
[6] Parsons T. Tectonic stressing in California modeled from GPS observations[J]. Journal of Geophysical Research: Solid Earth, 2006, 111(B3): B03407.
[7] 刘峡. 华北地区现今地壳运动及形变动力学数值模拟[D]. 安徽: 中国科学技术大学, 2007.
LIU Xia. Dynamic numerical simulation of the contemporary crustal movement and deformation in North China[D]. Anhui: University of Science and Technology of China, 2007 (in Chinese).
[8] 张晓亮, 师昭梦, 蒋锋云, 等. 海原—六盘山弧型断裂及其附近最新构造变形演化分析[J]. 大地测量与地球动力学, 2011, 31(3): 20-24.
ZHANG Xiao-liang, SHI Zhao-meng, JIANG Feng-yun, et al. Research on late tectonic deformation evolvement of Haiyuan-Liupanshan arc fault and its surrounding area[J]. Journal of Geodesy and Geodynamics, 2011, 31(3): 20-24 (in Chinese).
[9] 苏小宁, 孟国杰, 王振. 基于多尺度球面小波解算GPS应变场的方法及应用[J]. 地球物理学报, 2016, 59(5): 1585-1595.
SU Xiao-ning, MENG Guo-jie, WANG Zhen. Methodology and application of GPS strain field estimation based on multi-scale spherical wavelet[J]. Chinese Journal of Geophysics, 2016, 59(5): 1585-1595 (in Chinese).
[10] Wu Y, Jiang Z, Yang G, et al. Comparison of GPS strain rate computing methods and their reliability[J]. Geophysical Journal International, 2011, 185(2): 703–717.
[11] 张冰, 瞿伟, 凌晴, 等. 基于多面函数法的渭河盆地现今地壳构造形变特征分析[J]. 地球物理学进展, 2019, 34(3): 986-991.
ZHANG Bing, QU Wei, LING Qing, et al. Analysis of present crustal structure deformation characteristics of the Weihe basin based on the multi-surface function[J]. Progress in Geophysics, 2019, 34(3): 986-991 (in Chinese).
[12] 石耀霖, 朱守彪. 用GPS位移资料计算应变方法的讨论[J]. 大地测量与地球动力学, 2006, 26(1): 1-8.
SHI Yao-lin, ZHU Shou-biao. Discussion on the method of calculating strain by using GPS displacement data[J]. Journal of Geodesy and Geodynamics, 2006, 26(1): 1-8 (in Chinese).
[13] Savage J C, Gan W, Svarc J L. Strain accumulation and rotation in the Eastern California Shear Zone[J]. Journal of Geophysical Research: Solid Earth, 2001, 106(B10): 21995-22007.
[14] 金红林, 胡新康, 王阅兵. 利用最小二乘配置方法研究张家口—渤海地震带周边地区应变场[J]. 大地测量与地球动力学, 2012, 32(2): 7-10.
JIN Hong-lin, HU Xin-kang, Wang Yue-bing. Study on strain field around Zhangjiakou-Bohai seismic belt with least-square collocation[J]. Journal of Geodesy and Geodynamics, 2012, 32(2): 7-10 (in Chinese).
[15] 王启欣, 徐锡伟, 江在森. 南北地震带现今应变特征及地震危险性分析[J]. 大地测量与地球动力学, 2020, 40(1): 23-29.
WANG Qi-xin, XU Xi-wei, JIANG Zai-sen. Strain characteristics of north-south seismic zone and the analysis of earthquake risk[J]. Journal of Geodesy and Geodynamics, 2020, 40(1): 23-29 (in Chinese).
[16] 于吉鹏, 孟国杰, 苏小宁, 等. 基于GPS观测研究中国东北地区现今地壳形变特征[J]. 地震, 2019, 39(3): 11-27.
YU Ji-peng, MENG Guo-jie, SU Xiao-ning, et al. The current crustal deformation of northeast China deduced from GPS observations[J]. Earthquake, 2019, 39(3): 11-27 (in Chinese).
[17] Shen Z K, Wang M, Zeng Y H, et al. Optimal interpolation of spatially discretized geodetic data[J]. Bulletin of the Seismological Society of America, 2015, 105(4): 2117-2127.

Application of Three Strain Calculation Methods Based on GNSS Data in the Southeastern Margin of Tibet Plateau

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 13

Recommended Articles

Metrics

Comments

[1]	YANG Ye-xin, MENG Guo-jie, WU Wei-wei, LUO Yan, Thant Myo. Characteristics of Deep and Shallow Tectonics Deformation in Southwest Yunnan [J]. EARTHQUAKE, 2023, 43(1): 74-92.
[2]	ZHANG Nan, NIE Gao-zhong, FAN Xi-wei, WANG Jing, YU Si-han, SUN Jia-xin, XIE Hui. The Estimation of Current Motion Rates and Slip Deficits of the Main Active Faults in the Northern Segment of the North-South Seismic Belt Based on GNSS Velocity Field [J]. EARTHQUAKE, 2022, 42(4): 25-46.
[3]	YANG Ye-xin, MENG Guo-jie, WU Wei-wei, ZHAO Guo-qiang. Characteristics of Crustal Strain and Stress in the Northeastern Qinghai-Xizang Plateau [J]. EARTHQUAKE, 2022, 42(4): 1-13.
[4]	YU Ji-peng, MENG Guo-jie, SU Xiao-ning, Nikolay Shestakov, Mikhail Gerasimenko, Hiroaki Takahashi, Mako Ohzono, LIU Tai, LI Cheng-tao. The Current Crustal Deformation of Northeast China Deduced from GPS Observations [J]. EARTHQUAKE, 2019, 39(3): 11-27.
[5]	WANG Jing. Calculation Method of Strain Rate Field Based on GPS Observation [J]. EARTHQUAKE, 2019, 39(2): 122-134.
[6]	LI Cheng-tao, SU Xiao-ning, MENG Guo-jie. Heterogeneous Strain Rate Field in the Northeast Margin of Bayan Har Block from GPS Observations and its Relationship with the 2017 Jiuzhaigou M_S7.0 Earthquake [J]. EARTHQUAKE, 2018, 38(2): 37-50.
[7]	SU Xiao-ning,MENG Guo-jie. Pre-seismic Strain Accumulation and Co-seismic Deformation from the 2016 Menyuan M_S6.4 earthquake [J]. EARTHQUAKE, 2017, 37(4): 1-9.
[8]	CHEN Chang-yun. Characteristics of Segmentary Motion and Deformationalong the Zhangjiakou-Bohai Fault [J]. EARTHQUAKE, 2016, 36(1): 1-11.
[9]	WEI Wen-xin, JIANG Zai-sen, LIU Xiao-xia, ZOU Zhen-yu. Distribution and Variation Characteristics of Strain Rate Field in the Sichuan—Yunnan Region [J]. EARTHQUAKE, 2015, 35(4): 11-20.
[10]	LI Zhangjun, REN Jin-wei, MENG Guorjie, Y ANG Pan-xin. Deformation Model Inverted from Focal Mechanism Data in and around Chinese Mainland [J]. EARTHQUAKE, 2014, 34(3): 1-12.
[11]	WANG Wu-xing, SHI Yao-lin. A Preliminary Simulation of Global Seismic Activities based on Global Strain Rate [J]. EARTHQUAKE, 2013, 33(4): 123-134.
[12]	CHEN Chang-yun, REN Jin-wei, MENG Guo-jie, ZHANG Jun-long YANG Pan-xin, YANG Yong-lin, SU Xiao-ning, SU Jian-feng. Present-day Horizontal Motion and Deformation in the Northeast Part of the BarYan Har Block [J]. EARTHQUAKE, 2012, 32(4): 73-82.
[13]	JIANG Zai-sen, WU Yan-qiang. Crustal Deformation and Location Forecast of Strong Earthquakes: Understandings and Questions [J]. EARTHQUAKE, 2012, 32(2): 8-21.