| CG-5重力仪一次项格值系数对宁夏重力场变化的影响 |
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| 引用本文： | 冯建林,檀玉娟,秦建增,李德庆.CG-5重力仪一次项格值系数对宁夏重力场变化的影响[J].大地测量与地球动力学,2017,37(3):319-322. |
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| 作者姓名： | 冯建林 檀玉娟 秦建增 李德庆 |
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| 摘 要： | 使用宁夏测网2010～2012年流动重力观测数据，利用重力差方法重新计算得到CG-5重力仪的一次项格值系数，对比分析2012年银川ML5.0地震前，修正前后一次项格值系数对不同时间尺度重力场所产生的影响。结果表明：1）CG-5重力仪一次项格值系数随时间逐渐减小，呈持续下降的变化趋势；2）一次项格值系数修正前后不同时间尺度重力场变化量均明显减弱，凸显了“0”等值线现象。
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| 关 键 词： | 一次项格值系数 宁夏测网 重力场变化 &ldquo 0&rdquo 等值线 |
The Effect of One Degree Term of Chromatic Polynomial of CG-5 Gravimeter on Gravity Change in Ningxia Area |
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| FENG Jianlin,TAN Yujuan,QIN Jianzeng,LI Deqing.The Effect of One Degree Term of Chromatic Polynomial of CG-5 Gravimeter on Gravity Change in Ningxia Area[J].Journal of Geodesy and Geodynamics,2017,37(3):319-322. |
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| Authors: | FENG Jianlin TAN Yujuan QIN Jianzeng LI Deqing |
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| Abstract: | We use the 2010-2012 gravity data from the Ningxia survey network, recalculated by a one degree term of scale parameter of the CG-5 gravimeter. We conduct a comparative analysis of the impact of correction coefficient term grid values at different time scales produced by the gravitational field before the Yinchuan ML5.0 earthquake. Our results show: (1) CG-5 gravimeter one degree scale parameter decreases with time, and continuesa declining trend; (2) different time scale gravity field changes are significantly reduced, highlighting the “0” contour phenomenon. |
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| Keywords: | one degree term of scale parameter Ningxia gravity survey network change of gravity field the “0&rdquo contour |
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