First acceptance testing of multiple A10 absolute gravimeters in China and analysis of the comparison results

IF 2.8 4区地球科学 Q2 GEOCHEMISTRY & GEOPHYSICS

Geodesy and Geodynamics Pub Date : 2023-07-01 DOI:10.1016/j.geog.2023.02.001

Xiaotong Zhang , Hao Zhou , Ying Jiang , Dulin Zhai , Gongzhe Wei , Hui Li , Ziwei Liu

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引用次数: 0

Abstract

Three A10 absolute gravimeters (AGs) were first acquired in China by the Hubei Earthquake Agency under the Belt and Road Seismic Monitoring Network Project. Although AG measuring and testing technique is not new, the purchase and simultaneous testing of 3 A10 absolute gravimeters is unprecedented in China. This study conducted the first acceptance testing of the AGs at 3 locations (the Jiufengshan Gravity Observation Station, the Global Navigation Satellite System Observation Station in Wuhan, and the Jiugongshan Observation Station in Xianning). The results were compared using a method based on expert validation, and the acceptance testing scheme was formulated by referring to the Technical Regulations for Tectonic Environment Monitoring Networks in China and Specifications for Gravimetry Control. Based on the repeatability, precision, and consistency of the measured g values, the results from each instrument were evaluated using the air pressure precision test. Comparing the instrument reference values, the final test results can identify the indicator parameters for 3 A10 AGs, the effects of the surrounding environment, and the related parameters on measurement precision. The precision of A10-059, A10-058, and A10-057 exceeded 0.78 μGal, 0.79 μGal, and 0.42 μGal, respectively. This testing scheme can be used as a reference for conducting acceptance testing of AGs in the future and obtaining absolute gravimetric measurements.

查看原文本刊更多论文

国内多台A10绝对重力仪首次验收试验及对比结果分析

湖北省地震局在“一带一路”地震监测台网项目下首次获得3台A10型绝对重力仪。AG测量和测试技术虽然并不新鲜，但购买3台A10绝对重力仪并同时测试在国内还是前所未有的。本研究在3个地点(武汉九峰山重力观测站、全球卫星导航系统观测站和咸宁九宫山观测站)对AGs进行了首次验收试验。采用专家验证法对结果进行比较，参照《中国构造环境监测网技术规程》和《重力控制规范》制定验收试验方案。基于测量g值的重复性、精密度和一致性，使用气压精度测试对每个仪器的结果进行评估。通过对比仪器参考值，最终的测试结果可以识别出3个A10 AGs的指标参数、周围环境的影响，以及相关参数对测量精度的影响。A10-059、A10-058和A10-057的精密度分别超过0.78 μGal、0.79 μGal和0.42 μGal。该检测方案可作为今后对AGs进行验收检测和获得绝对重量测量的参考。

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来源期刊

Geodesy and Geodynamics GEOCHEMISTRY & GEOPHYSICS-

CiteScore

4.40

自引率

4.20%

发文量

566

审稿时长

69 days

期刊介绍： Geodesy and Geodynamics launched in October, 2010, and is a bimonthly publication. It is sponsored jointly by Institute of Seismology, China Earthquake Administration, Science Press, and another six agencies. It is an international journal with a Chinese heart. Geodesy and Geodynamics is committed to the publication of quality scientific papers in English in the fields of geodesy and geodynamics from authors around the world. Its aim is to promote a combination between Geodesy and Geodynamics, deepen the application of Geodesy in the field of Geoscience and quicken worldwide fellows'' understanding on scientific research activity in China. It mainly publishes newest research achievements in the field of Geodesy, Geodynamics, Science of Disaster and so on. Aims and Scope: new theories and methods of geodesy; new results of monitoring and studying crustal movement and deformation by using geodetic theories and methods; new ways and achievements in earthquake-prediction investigation by using geodetic theories and methods; new results of crustal movement and deformation studies by using other geologic, hydrological, and geophysical theories and methods; new results of satellite gravity measurements; new development and results of space-to-ground observation technology.