由地面、卫星重力资料研究岩石层密度

地球内部物质密度的分布决定了地球表面及外空的重力场,不过在特定的条件下,也可以根据地面或外空的重力场推求地球内部异常密度的分布。本文在单层位理论的基础上,利用上述资料确定了我国大陆下面地球深部的异常密度,试用分离重力场长、短波长的方法,求出了地球外层-岩石层内异常密度的侧向分布,对此,还初步作了地球物理的解释,其结果与地震测深的较为一致。

INVESTIGATION OF ANOMALY DENSITY IN LITHO-SPHERE BY USING THE GROUND GRAVITY DATA AND SATELLITE OBSERVATIONS

The gravity field of the earth's surface and outer space depends on the interior mass density distribution of the earth. But under specified conditions the interior anomaly density distribution of the earth can also be derived according to the ground and outer space gravity field. In this paper, on the basis of the single layer potential theory the earth's depth anomaly density under continent in China is determined by utilizing the above mentioned data, mainly, the lateral distribution of anomaly density within the earth outer layer--lithosphere, is calculatedusing the method of long and short wave-lengths. In addition, the preliminary geophysical interpretation for this problle mis made. Its results are the same as seismological depth-measurement.