摘要
利用TOPEX/POSEIDON卫星测高数据来确定海平面对大气压变化全球响应(反变气压计响应 )的空间分布和频率特征 .采用多元回归方法 ,得到全球反变气压计响应系数为 - 0 85± 0 47cm/hPa .在赤道区域 ,反变气压计响应受平均气压和经向风的影响比较明显 .在全球区域 ,应用希尔伯特 (Hilbert)变换和傅里叶变换两种方法 ,给出反变气压计响应的周期为 30— 2 0
Spatial distribution and spectral characteristics of the global Inverted Barometer (IB) response of sea level to variations of atmospheric pressure are studied by using TOPEX/POSEIDON (T/P) data. By means of multi regression method,the IB response coefficient is obtained as 0.85±0.47cm/hPa on globe. The effects of average pressure and meridional wind on IB response are obvious in the tropic areas. The global IB period of 30—200 days has been obtained by using Hilbert and Fourier transfer function.
出处
《地球物理学报》
SCIE
EI
CAS
CSCD
北大核心
2001年第3期320-326,共7页
Chinese Journal of Geophysics
基金
中国科学院资环局"九五"重点项目!(KZ952 -S1 -4 0 1 )
