Isostasy of the Southern Oceans

Geosat和ERS-1上的卫星高度计 航天器已经绘制了几乎所有海洋重力场的地图， 世界海洋的高度准确性。 地球观测卫星的数据显示 最近，南纬已被解密。 波长 在15 ~ 150 km波段，重力异常变化剧烈， 与海底地形有关。 由于许多南大洋 这些新的Geosat数据揭示了许多 以前未被发现的特征。 本项目的目标是 （1）合并斯克里普斯卫星高度表处理系统 与船上的数据处理系统，使这些数据集可以 比较和相关，（2）研究三种方法， 构造映射密集卫星的逆传递函数 重力作用到稀疏的船舶地形剖面上，（3）提取 地形/重力转换函数的区域变化， 将它们与构造省联系起来，（4）利用地形/转换 用于在稀疏船舶之间插入海底地形的功能 探测，（5）检查地形/重力转移的变化 在扩张脊的作用，重点是变化， 扩展速率和到脊/变换交叉点的距离。

The satellite altimeters aboard the Geosat and ERS-1 spacecraft have mapped the marine gravity field over nearly all of the world's oceans to a high accuracy. The Geosat data south of 30 degrees south has recently been declassified. In the wavelength band 15 to 150 km, variations in gravity anomaly are highly correlated with seafloor topography. Since many southern ocean areas are sparsely surveyed, these new Geosat data reveal many previously unsurveyed features. The objectives of this project are to: (1) merge the Scripps satellite altimeter processing system with the shipboard data processing system so these data sets can be compared and correlated, (2) investigate three methods for constructing inverse transfer functions for mapping dense satellite gravity onto the sparse ship topography profiles, (3) extract regional variations in the topography/gravity transfer function and relate them to tectonic provinces, (4) use topography/transfer functions to interpolate seafloor topography between sparse ship sounding, and (5) examine variations in topography/gravity transfer function at spreading ridges with emphasis on the variation with spreading rate and distance to ridge/transform intersection.