武汉及周边地区数字化形变观测资料质量分析
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摘要
对武汉及周边地区2007—2016年数字化形变观测资料进行长期背景跟踪分析,认为形变观测资料的日均变化幅度、M_2波潮汐因子均方差、长周期拟合相对噪声水平等指标变化稳定,资料可信度高,DSQ型水管倾斜仪观测精度与资料稳定性均优于SS-Y型铟瓦棒洞体应变仪。对武汉狮子山及黄石地震台形变观测数据典型变化进行系统总结与跟踪分析,发现主要受到人为干扰(调零、标定)、自然环境(降雨、气压)和观测系统故障等因素影响。
Based on the observation data of the digital deformation instruments from 2007 to 2016 in Wuhan and its surrounding area(including Wuhan Seismic Station and Huangshi Seismic Station), the characteristics of the long-term observation background were described in this paper. The results showed that, the indicators of daily variation, mean square error of M2 wave tide factor and relative noise level were reliable. Furthermore, the observation precision and stability of DSQ water tube tiltmeter were superior to SS-Y strain parameter. In addition, typical variation characteristics of the deformation observation data were summarized at Wuhan Seismic Station and Huangshi Seismic Station. The major influence factors are human disturbance(zero setting, calibration), natural environment(rainfall, air pressure) and the fault of observation system.
Based on the observation data of the digital deformation instruments from 2007 to 2016 in Wuhan and its surrounding area(including Wuhan Seismic Station and Huangshi Seismic Station), the characteristics of the long-term observation background were described in this paper. The results showed that, the indicators of daily variation, mean square error of M2 wave tide factor and relative noise level were reliable. Furthermore, the observation precision and stability of DSQ water tube tiltmeter were superior to SS-Y strain parameter. In addition, typical variation characteristics of the deformation observation data were summarized at Wuhan Seismic Station and Huangshi Seismic Station. The major influence factors are human disturbance(zero setting, calibration), natural environment(rainfall, air pressure) and the fault of observation system.
引文
狄樑,陆德明,丁建国. 常熟地震台数字水管倾斜仪观测资料质量分析 [J]. 大地测量与地球动力学,2012,32(Z1):41-44.
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丁雨,尹传兵,吴坤. 淮北台 DSQ 型与 SSQ-2I 型倾斜仪观测资料的对比分析 [J]. 防灾科技学院学报,2014,16(3):26-31.
蒋海昆. 重视预报过程反思提高地震预测水平 [J]. 国际地震动态,2005,(5):151-153.
刘其寿,杨佩琴,王绍然,等. 龙岩地震台地倾斜资料干扰因素分析 [J]. 大地测量与地球动力学,2010,30(Z1):91-95.
梅世蓉.地震前兆场物理模式与前兆时空分布机制研究(三)--强震孕育时地震活动与地壳形变场异常及机制[J].地震学报,1996,18(2):170-178.
孙伶俐,罗俊秋,龙涛.大气降水对数字化地倾斜观测干扰特征分析[J].大地测量与地球动力学,2010,30(Z1):105-110.
孙伶俐,罗俊秋,吕品姬,等.十堰台数字化水管仪倾斜潮汐观测质量评定[J].大地测量与地球动力学,2011,31(Z1):59-63.
王双绪,蒋锋云,李宁,等.岷县漳县6.6级地震前区域地壳运动变形背景与断层形变异常特征[J].地震工程学报,2013,35(3):503-512.
邢喜民,孙吉泽,张治广.榆树沟定点形变受气象因素影响分析及典型震例[J].大地测量与地球动力学,2015,35(1):162-166.
于庆民,卢双苓,郝军丽,等.泰安地震台形变仪器映震能力统计分析[J].地震研究,2015,38(3):408-415.
张雁滨,蒋骏,钱家栋,等.地壳介质微形变异常与强震短临前兆[J].地震学报,2002,24(1):103-108.
赵小贺,刘莉,李琦,等.马陵山地震台水管倾斜仪观测质量评价[J].华南地震,2014,34(1):113-116.
狄樑,陆德明,丁建国. 常熟地震台伸缩仪运行分析 [J]. 大地测量与地球动力学,2013,33(Z2):21-23.
丁雨,尹传兵,吴坤. 淮北台 DSQ 型与 SSQ-2I 型倾斜仪观测资料的对比分析 [J]. 防灾科技学院学报,2014,16(3):26-31.
蒋海昆. 重视预报过程反思提高地震预测水平 [J]. 国际地震动态,2005,(5):151-153.
刘其寿,杨佩琴,王绍然,等. 龙岩地震台地倾斜资料干扰因素分析 [J]. 大地测量与地球动力学,2010,30(Z1):91-95.
梅世蓉.地震前兆场物理模式与前兆时空分布机制研究(三)--强震孕育时地震活动与地壳形变场异常及机制[J].地震学报,1996,18(2):170-178.
孙伶俐,罗俊秋,龙涛.大气降水对数字化地倾斜观测干扰特征分析[J].大地测量与地球动力学,2010,30(Z1):105-110.
孙伶俐,罗俊秋,吕品姬,等.十堰台数字化水管仪倾斜潮汐观测质量评定[J].大地测量与地球动力学,2011,31(Z1):59-63.
王双绪,蒋锋云,李宁,等.岷县漳县6.6级地震前区域地壳运动变形背景与断层形变异常特征[J].地震工程学报,2013,35(3):503-512.
邢喜民,孙吉泽,张治广.榆树沟定点形变受气象因素影响分析及典型震例[J].大地测量与地球动力学,2015,35(1):162-166.
于庆民,卢双苓,郝军丽,等.泰安地震台形变仪器映震能力统计分析[J].地震研究,2015,38(3):408-415.
张雁滨,蒋骏,钱家栋,等.地壳介质微形变异常与强震短临前兆[J].地震学报,2002,24(1):103-108.
赵小贺,刘莉,李琦,等.马陵山地震台水管倾斜仪观测质量评价[J].华南地震,2014,34(1):113-116.