There exist obvious differences between the surveyed gravity vertical gradi-ent value and the normal theoretical gravity vertical gradient value at eachspot on surface, whose cause remains a problem of much controversy.
[1] 童永春:1983,金属矿重力勘探资料整理的几个问题,物探与化探,Vol.7, No.5
[2] 黄绪德等泽:1964,关于计算重力异常二次导数的间题,地球物理勘探专辑(6),中国工业出版社。
[3] Fajklewicz Z. J., Gravity vertical gradjent for the detection of small geologic and anthropogenie forms, Geophysics, Vol. 41,No. 5.
[4] Hammer S., The anomalous Vertical gradient of gravity, Geophysics, Vol. 35, No.
[5] Kuo J. T. et al, Variations of vertiral gravity gradient in New York and Alpint,Newjrrsey,Geoyhysics, Vol. 34, No. 2
[6] Saxov S. et al, Residu al anonalies and depth estimation, Geophysics, Vol. 18, No.1
[7] Thyssen-Boroemisza s. et al, Observation of the vertical gradient of gravity in the fiekl,Geophysics, Vol 21,No.3
[8] Thyssen-Borneurisra S. et al, Vertical gradients of gravity for areal density Contrast exploration, Zeits-thrift für geophysik, Vol. 37, pp.735-741
[9] T'hysseu-Bornemisza S. et al, Correction of accurate gravity surveys by Carefully observed vertical gralients of gratify, Geophysical prosnecting, Vol. 20. pp. 17-21.