摘要
根据北京塔院地区1984和1985年的微气压计记录采用频谱分析和调和分析两种方法得出了大气潮谱的详细结构;用负荷勒甫数代替潮汐勒甫数,仿照固体潮的有关公式,导出了大气潮引起的地壳应变和地倾斜公式;使用北京塔院井的水位观测资料结合当地的气压资料,分析了气压变化对深井水位的影响.理论计算和实测资料的分析结果基本相符,特别是两种结果都得出S_2大气潮引起的体膨胀约为S_2固体潮体膨胀的20％.
The detailed structure of spectrum of atmospheric tides is obtained by the spectral analysis-and harmonic analysis from the microbarograph records in 1984 and 1985 years in Ta-Yuan region in Beijing. Substituting load Love numbers for tidal Love numbers and following relative formula of earth tides, the expressions of crustal strain and tilt resulted from atmospheric tides are derived. Using the tidal water level data in Ta-Yuan well in conjunction with barometric data in situ, the influence of barometric pressure variations on water level in the well is analysed. The results of theoretic calculation are basically consistent with that analysed observations, especially, both results give that cubic dilatation of the crust produced by the atmospheric S2 tide is about 20 per cent of S2 tidal cubic dilatation.
出处
《地球物理学报》
SCIE
EI
CAS
CSCD
北大核心
1991年第1期73-81,共9页
Chinese Journal of Geophysics
关键词
地震
大气潮
固体潮
观测
深井水位
Atmospheric tides, Earth tides, Love numbers, Cubic dilatation, Barometric efficiency.
