甘肃省东部地区的潮汐测量结果及其地球动力学意义  

OBSERVATIONAL RESULT OF TIDAL PARAMETERS IN EASTERN GANSU PROVINCE AND ITS DYNAMIC SIGNIFICANCE

作　　者：唐九安[1] 常千军[1] 张幼敏[1] 翟丽君 

机构地区：[1]国家地震局兰州地震研究所,中国兰州730000

出　　处：《地震》1995年第3期252-259,共8页Earthquake

摘　　要：文中介绍甘肃省东部地区1985年以来在重力、倾斜、水平应变和水位等固体潮方面的测量概况,给出了各台(项)全系列观测资料作整体调和分析计算的潮汐参数,分析了液态地核共振效应对重力、水平线应变和水位固体潮周日波潮汐因子的影响以及地壳构造横向不均匀性对倾斜固体潮潮汐因子的影响。结果表明,兰州重力仪、石英水平伸缩仪和甘06井等水位井的结果清楚地显示出液核共振效应对K_1波振幅的缩小作用和对ψ_1波振幅的放大作用,且重力和伸缩仪NS向结果所揭示的地球模型更接近莫洛金斯基的地球型Ⅱ;倾斜固体潮潮汐因子的实测结果明显地受地壳构造横向不均匀性影响,其中水管倾斜仪受影响的程度又明显地大于水平摆倾斜仪,兰州和宕昌两地南北向的非均匀性明显大于东西向,而宕昌地区的非均匀性又明显大于兰州地区。In this paper the general situation of observation and the result of harmonic analysis of the related data, including gravity tide, tilt tide,horizontal strain tide and water level tide in eastern Gansu Province during 1985-1993 are introduced, and the influence of liquid-state earth core on the tide factors of diurnal wave and the influence of lateral heterogeneity of the crustal structure on the tilt earth tide factor are also discussed. The observational values of δ1 / δo1 and δo1 / δ K1 of Lanzhou gravity tide and horizontal line strain tide are close to the values of Molokinski's model II . The dynamic effect of the liquid-state earth core is obviously seen in the well water level. The lilt tidal factors are clearly influenced by the lateral heterogeneity of the crustal structure, especially exhibited in the north-south direction of water level tiltmeter.

关 键 词：潮汐测量 地球动力学 调和分析 固体潮 地震预报 

分 类 号：P315.7[天文地球—地震学]