张家口地震监测中心站定点形变测项迁至崇礼形变观测山洞,选取2020年1月—2024年3月地倾斜、洞体应变、钻孔应变等观测资料,从台址条件、仪器设备运行稳定性、干扰因素、观测质量精度等方面进行综合分析与评价。分析认为:观测资料连续、稳定、可靠,固体潮汐观测精度指标优于国内定点形变Ⅰ类台标准,与国内同类先进台站相媲美,尤其是DSQ型水管倾斜仪,其观测资料质量达国内领先水平。
This paper comprehensively analyzes and evaluates the quality of observation data from January 2020 to March 2024 for fixed-point deformation measurement items such as ground tilt, cavern strain, and borehole strain in the newly relocated Chongli deformation observation cavern at Zhangjiakou Central Station, from the aspects of site conditions, operational stability of instruments and equipment, interference factors, and observation quality and accuracy. The analysis shows that the observation data are continuous, stable, and reliable, and the accuracy index of solid tide observation is superior to the standard of domestic Class I fixed-point deformation stations, comparable to similar advanced domestic stations, especially the DSQ water tube tiltmeter observation, which has reached the leading domestic level.
2025,46(1): 122-129 收稿日期:2024-6-20
DOI:10.3969/j.issn.1003-3246.2025.01.017
基金项目:河北省地震科技星火计划项目(项目编号:DZ2024112600011)
作者简介:张秀萍(1974—),女,甘肃民勤县人,高级工程师,主要从事地震观测与分析预报工作。E-mail:xiuping-zhang@126.com
参考文献:
陈贵美,谭争光,刘锦,等. 广东数字化形变观测资料质量评价 [J]. 华南地震,2022,42(1):7-14.
狄樑,钱文杰,刘冬冬,等. 气压短时扰动对常熟台伸缩仪影响频段的分析[J]. 大地测量与地球动力学,2023,43(12):1 307-1 312.
冯建琴,沈晓松,董甲弟,等. 山西数字化水管倾斜仪观测资料质量分析[J]. 地震地磁观测与研究,2011,32(3):100-108.
刘春国,李正媛,吕品姬,等. 数字化地震前兆台网观测数据质量评价方法[J]. 中国地震,2017,33(1):112-121.
罗词建,李媛媛,韩晓飞. 陕西省十五形变台网数据质量评价[J]. 华北地震科学,2010,28(4):41-46.
吕琳,孙伶俐,蒋玲霞,等. 武汉及周边地区数字化形变观测资料质量分析[J]. 地震地磁观测与研究,2019,40(2):97-102.
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.
中国地震局.地震及前兆数字观测技术规范· 地壳形变观测:试行[M].北京:地震出版社,2001.