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作者应用西德METRONIX公司MMS-02型电磁测深仪在深圳—增城剖面四个测点进行了观测记录.通过对资料的计算及处理取得了该剖面地下电性结构各参数。文中初步认为其地下约10公里深处,存在厚度7至24公里,电阻率约为10欧姆米的低电阻层.并推算认为其上地幔高导层埋深平均为110公里,其埋深由西北向东南有变浅的趋势。作者通过阿达姆(Adam)公式估算本区大地热流值为1.26HFU。推算认为:其地下深处电性结构主轴为北西向,与航磁延拓资料认为北北西向的大亚湾断裂基本吻合。
The authors use the MMS-02 electromagnetic depth sounder of METRONIX in West Germany to observe and record at four measuring points in Shenzhen-Zengcheng section, and obtain the parameters of the subsurface electrical structure by calculating and processing the data. It is preliminarily believed that there is a low resistance layer about 10 km underground and a resistivity of about 10 ohm.It has a thickness of 7 to 24 km.It is deduced that the upper conductive layer of the upper mantle is buried at an average depth of 110 km, Northwest to southeast have a shallow trend. The authors estimate the local heat flow in this area as 1.26HFU using Adam’s formula. It is inferred that the main axis of the electrical structure in the deep underground is northwestward, which is basically consistent with the North-west-west Daya Bay fault according to the aeromagnetic extension extension data.