摘要
以马尼拉海沟俯冲带为例,对该地区的重力异常和地形数据进行Sym let小波多尺度分解,研究了不同尺度上两者的相关关系,通过高频曲线图的比较,发现两者在第4或第5尺度高频部分存在很强的相关性,并且推测重力异常在第2和第3尺度高频部分主要受海水影响,为重力异常中噪声、海水和海底地形等影响因素的分离提供了参考。
Taking Manila trench subduction zone as an example, this paper has a research on the gravity anomaly of subduction zone with wavelet analysis. Through Symlet wavelet multiscale analysis of the data of gravity anomaly and topography around the subduction zone we have found that there is a close relationship between gravity anomaly and topography in the fourth or the fifth scale of high frequency, and surmised that the seawater influences mainly in the second and the third scale of the high frequency of gravity anomaly, which provides a reference for dividing the influence of noise, seawater, topography and so on.
出处
《大地测量与地球动力学》
CSCD
北大核心
2009年第3期67-69,73,共4页
Journal of Geodesy and Geodynamics
基金
国家自然科学基金(40704003
40874004)
