华东地区钻孔体应变对飑线天气过程响应的特征与机制

doi:10.12196/j.issn.1000-3274.2021.04.014

摘要/Abstract

摘要： 2018年3月4日华东地区爆发了一次强飑线天气过程, 为揭示过境区域钻孔体应变对该飑线生命史期间的响应特征与机制, 本文结合多普勒天气雷达和地面气象站数据, 系统分析了南昌、黄山、湖州和岱山等4个钻孔体应变台的观测记录。结果表明: ① 飑线过境时的气压突变是引起体应变显著变化的主因, 由此引起最大的体应变量为16.2×10^-9; ② 气压涌升幅度与体应变的弹性压缩量具有较好的线性关系, 两者变化的周期较一致, 为26~74 min, 而气压影响系数高达5.0×10^-9/hPa; ③ 各台对飑线的响应能力较好, 而且在时间、空间和强度上, 体应变变化能较好地呈现飑线的演变过程和传播特征。以上结果, 不仅有助于科学识别飑线所引起单台或多台体应变异常变化的物理本质; 还能为短周期气压效应的改正模型提供实证依据。

关键词: 飑线, 强对流天气, 气压, 钻孔体应变, 华东地区

Abstract: On 4 March 2018, a southwest-northeast-oriented squall line was observed propagating across East China, which caused disaster during its evolution. The main object of this work is to systematically reveal the characteristics of the squall line in strainmeter measurements, and to improve our understanding of atmospheric loading signals in strainmeter records during the passage of the mesoscale convective system. Combined with the doppler radar, atmospheric pressure and outdoor temperature observations, we analyze the responses of volumetric strain with 1-minute resolution to the strong squall line recorded at Nanchang, Huangshan, Huzhou, and Daishan stations. The results show that: ① The short-period jump in the atmospheric pressure caused by the squall line is the main dominating driving force for the pressure-induced volumetric strain, the maximum magnitude is about 16.2×10^-9 on strain records. ② It is also observed the relationship between the fluctuations of atmospheric pressure and the compressive strains as for the magnitudes for the above-mentioned stations show a good linear variations. And the observed fluctuations with a periodicities ranging from 26 to 74 minutes are almost consistent between the atmospheric pressure and volumetric strain. Moreover, the atmospheric pressure coefficient of volumetric strain can reach up to 5.0×10^-9/hPa. ③ All the stations can respond well to the squall line. Furthermore, the evolution process and propagating pattern of the spatiotemporal and intensity variations for the squall line can be revealed clearly by multi-station records. The results could lead to reasonably uncover the physical origin of anomalous volumetric strain changes recorded at single-and/or multi-station. Meanwhile, the results can also contribute to providing the crucial observational evidences for atmospheric loading model in short period aiming to correct barometric effect precisely.

Key words: Squall line, Convective weather, Atmospheric pressure, Borehole volumetric strain, East China

中图分类号:

P315.7

杨小林, 杨锦玲. 华东地区钻孔体应变对飑线天气过程响应的特征与机制[J]. 地震, 2021, 41(4): 180-191.

YANG Xiao-lin, YANG Jin-ling. Characteristics and Mechanism of Borehole Strainmeter in Response to a Squall Line in East China[J]. EARTHQUAKE, 2021, 41(4): 180-191.

参考文献

[1] Sacks I S, Suyehiro S, Evertson D W. Sacks-Evertson strainmeter, its installation in Japan and some preliminary results concerning strain steps[J]. Proceedings of the Japan Academy, 1971, 47(9): 707-712.
[2] Nikolaidis R. Observation of geodetic and seismic deformation with the Global Positioning System[D]. San Diego: University of California, San Diego, 2002.
[3] McGarr A, Sacks I S, Linde A T, et al. Coseismic and other short-term strain changes recorded with Sacks-Evertson strainmeters in a deep mine, South Africa[J]. Geophysical Journal International, 1982, 70(3): 717-740.
[4] Bernard P, Boudin F, Sacks S, et al. Continuous strain and tilt monitoring on the Trizonia island, Rift of Corinth, Greece[J]. Comptes Rendus Geoscience, 2004, 336(4-5): 313-323.
[5] Stefànsson R. Advances in earthquake prediction[M]. Berlin: Springer-Verlag, 2011.
[6] 邱泽华, 唐磊, 张宝红, 等. 用小波-超限率分析提取宁陕台汶川地震体应变异常[J]. 地球物理学报, 2012, 55(2): 538-546.
QIU Ze-hua, TANG Lei, ZHANG Bao-hong, et al. Extracting anomaly of the Wenchuan earthquake from the dilatometer recording at NSH by means of Wavelet-Overrun Rate Analysis[J]. Chinese Journal of Geophysics, 2012, 55(2): 538-546 (in Chinese).
[7] Machida Y, Araki E, Kimura T, et al. Installation of a high sensitivity ocean borehole strainmeter in the Nankai Trough under severe sea current conditions[J]. Marine Technology Society Journal, 2018, 52(3): 128-137.
[8] Furuya I, Fukudome A. Characteristics of borehole volume strainmeter and its application to seismology[J]. Journal of Physics of the Earth, 1986, 34(3): 257-296.
[9] Barbour A J, Crowell B W. Dynamic strains for earthquake source characterization[J]. Seismological Research Letters, 2017, 88(2A): 354-370.
[10] 周龙寿, 邱泽华, 唐磊, 等. 用中国钻孔应变台网资料检验大震“前驱波”[J]. 地震, 2009, 39(3): 67-78.
ZHOU Long-shou, QIU Ze-hua, TANG Lei, et al. Testing precursory wave before strong earthquake using borehole strain data[J]. Earthquake, 2009, 29(3): 67-78 (in Chinese)
[11] 邱泽华, 唐磊, 赵树贤, 等. 用应变地震观测求解震源矩张量的基本原理[J]. 地球物理学报, 2020, 63(2): 551-561.
QIU Ze-hua, TANG Lei, ZHAO Shu-xian, et al. Fundamental principle to determine seismic source moment tensor using strain seismographs[J]. Chinese Journal of Geophysics, 2020, 63(2): 551-561 (in Chinese).
[12] Linde A T, Gladwin M T, Johnston M J S, et al. A slow earthquake sequence on the San Andreas fault[J]. Nature, 1996, 383(6595): 65-68.
[13] Nanjo K Z. Capability of Tokai Strainmeter Network to detect and locate a slow slip: First results[J]. Pure and Applied Geophysics, 2019, 177(6): 2701-2718.
[14] Linde A T, Agustsson K, Sacks I S, et al. Mechanism of the 1991 eruption of Hekla from continuous borehole strain monitoring[J]. Nature, 1993, 365(6448): 737-740.
[15] Asai Y, Ishii H, Aoki H. Comparison of tidal strain changes observed at the borehole array observation system with in situ rock properties in the Tono region, central Japan[J]. Journal of Geodynamics, 2009, 48(3): 292-298.
[16] Lorenz R D, Kedar S, Murdoch N, et al. Seismometer detection of dust devil vortices by ground tilt[J]. Bulletin of the Seismological Society of America, 2015, 105(6): 3015-3023.
[17] Valovcin A, Tanimoto T. Modeling the excitation of seismic waves by the Joplin tornado[J]. Geophysical Research Letters, 2017, 44(20): 10256-10261.
[18] 张凌空, 吴利军, 杨颖. 雷暴产生的气压突变对体应变与同井水位干扰的对比研究[J]. 中国地震, 2012, 28(1): 69-77.
ZHANG Ling-kong, WU Li-jun, YANG Ying. Comparative study of the interference of mutation pressure generated by thunderstorms with volume strain and same well water-level[J]. Earthquake Research in China, 2012, 28(1): 69-77 (in Chinese).
[19] Tsai V C, Kanamori H, Artru J. The morning glory wave of southern California[J]. Journal of Geophysical Research: Solid Earth, 2004, 109(B2): B02307.
[20] Tytell J, Vernon F, Hedlin M, et al. The USArray Transportable Array as a platform for weather observation and research[J]. Bulletin of the American Meteorological Society, 2016, 97(4): 603-619.
[21] 杨小林, 危自根, 杨锦玲, 等. 飑线对定点地形变观测的影响特征与机理以陕西关中盆地为例[J]. 中国地震, 2019, 35(3): 465-475.
YANG Xiao-lin, WEI Zi-gen, YANG Jin-ling, et al. Ground deformation induced by a strong squall line: A case study in the Weihe Basin, Shaanxi Province[J]. Earthquake Research in China, 2019, 35(3): 465-475 (in Chinese).
[22] 檜皮久義, 佐藤馨, 二瓶信一, 等. 埋込式体積歪計の気圧補正[J]. 験震時報, 1983, 47(3-4): 91-111.
Hikawa H, Sato K, Nihei S, et al. Correction due to atmospheric pressure changes of data of the borehole volume strainmeter[J]. Quarterly Journal of Seismology, 1983, 47(3-4): 91-111 (in Japanese).
[23] Liu C C, Linde A T, Sacks I S. Slow earthquakes triggered by typhoons[J]. Nature, 2009, 459(7248): 833-836.
[24] Hsu Y J, Chang Y S, Liu C C, et al. Revisiting borehole strain, typhoons, and slow earthquakes using quantitative estimates of precipitation-induced strain changes[J]. Journal of Geophysical Research: Solid Earth, 2015, 120(6): 4556-4571.
[25] Nakao S, Linde A T, Miura S, et al. Nonlinear barometric response of borehole strainmeters and its interpretation[J]. Journal of Physics of the Earth, 1989, 37(6): 357-383.
[26] 周龙寿, 邱泽华, 唐磊. 地壳应变场对气压短周期变化的响应[J]. 地球物理学进展, 2008, 23(6): 1717-1726.
ZHOU Long-shou, QIU Ze-hua, TANG Lei. The response of crustal strain field to short-period atmospheric pressure variation[J]. Progress in Geophysics, 2008, 23(6): 1717-1726 (in Chinese).
[27] 张凌空, 王广才, 牛安福. 周期气压波对地壳应变场观测影响的若干因素分析[J]. 地震学报, 2011, 33(3): 351-361.
ZHANG Ling-kong, WANG Guang-cai, NIU An-fu. Analysis on several factors of periodic air pressure wave affecting crustal strain field[J]. Acta Seismologica Sinica, 33(3): 351-361 (in Chinese).
[28] 张凌空, 牛安福. 周期气压波对地壳岩石应变测量影响的理论解[J]. 地球物理学进展, 2019, 34(4): 1366-1370.
ZHANG Ling-kong, NIU An-fu. Theoretical solution of periodic pressure wave effect on crustal strain measurement[J]. Progress in Geophysics, 2019, 34(4): 1366-1370 (in Chinese).
[29] 寿绍文. 中尺度气象学(第三版)[M]. 北京: 气象出版社, 2016.
SHOU Shao-wen. Mesometeorology (3rd edition)[M]. Beijing: China Meteorological Press, 2016 (in Chinese).
[30] 沈杭锋, 翟国庆, 朱补全, 等. 浙江沿海中尺度辐合线对飑线发展影响的数值试验[J]. 大气科学, 2010, 34(6): 1127-1140.
SHEN Hang-feng, ZHAI Guo-qing, ZHU Bu-quan, et al. A model study of impact of coastal mesoscale convergence line on development of squall line over Zhejiang Province[J]. Chinese Journal of Atmospheric Sciences, 2010, 34(6): 1127-1140 (in Chinese).
[31] 高坤, 翟国庆, 俞樟孝, 等. 华东中尺度地形对浙北暴雨影响的模拟研究[J]. 气象学报, 1994, 52(2): 157-164.
GAO Kun, ZHAI Guo-qing, YU Zhang-xiao, et al. The simulation study of the meso-scale orographic effects on heavy rain in East China[J]. Acta Meteorologica Sinica, 1994, 52(2): 157-164 (in Chinese).
[32] 黎慧琦, 张莹, 朱佩君, 等. 2012年7月发生于浙南山地的短飑线过程研究[J]. 浙江大学学报(理学版), 2014, 41(4): 458-467+476.
LI Hui-qi, ZHANG Ying, ZHU Pei-jun, et al. Study on the genesis of a short squall line in mountains of Southern Zhejiang in 2012[J]. Journal of Zhejiang University (Science Edition), 2014, 41(4): 458-467+476 (in Chinese).
[33] 沈杭锋, 方桃妮, 蓝俊倩, 等. 一次强飑线过程极端大风的中尺度分析[J]. 气象学报, 2019, 77(5): 806-822.
SHEN Hang-feng, FANG Tao-ni, LAN Jun-qian, et al. Mesoscale analysis of the extremely damaging gale in a severe squall line[J]. Acta Meteorologica Sinica, 2019, 77(5): 806-822 (in Chinese).
[34] 苏恺之, 李海亮, 张钧, 等. 钻孔地应变观测新进展[M]. 北京: 地震出版社, 2003.
SU Kai-zhi, LI Hai-liang, ZHANG Jun, et al. New development of borehole strain observation[M]. Beijing: Seismological Press, 2003 (in Chinese).
[35] Huang N E, Wu Z H. A review on Hilbert-Huang transform: Method and its applications to geophysical studies[J]. Reviews of Geophysics, 2008, 46(2): RG2006.
[36] 张晖辉, 颜玉定, 余怀忠, 等. 循环载荷下大试件岩石破坏声发射实验岩石破坏前兆的研究[J]. 岩石力学与工程学报, 2004, 23(21): 3621-3628.
ZHANG Hui-hui, YAN Yu-ding, YU Huai-zhong, et al. Acoustic emission experimental research on large-scaled rock failure under cycling load: Fracture precursor of rock[J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 23(21): 3621-3628 (in Chinese).
[37] 谢仁海, 渠天祥, 钱光谟. 构造地质学[M]. 徐州: 中国矿业大学出版社, 2007.
XIE Ren-hai, QU Tian-xiang, QIAN Guang-mo. Structural geology[M]. Xuzhou: China University of Mining and Technology Press, 2007 (in Chinese).
[38] 任福民, 高辉, 刘绿柳, 等. 极端天气气候事件监测与预测研究进展及其应用综述[J]. 气象, 2014, 40(7): 860-874.
REN Fu-min, GAO Hui, LIU Lü-liu, et al. Research progresses on extreme weather and climate events and their operational applications in climate monitoring and prediction[J]. Meteorological Monthly, 2014, 40(7): 860-874 (in Chinese).