The Research of Sea-floor Transient Electromagnetic Data Sample Process And the Field Experiments
The characteristics of the transient electromagnetic detection signal received by receiver instrument are analyzed in order to design the sampling methods. The amplitude of the induced electromotive force is high and the attenuation speed is fast in the early time. The signal is weak and the attenuation speed is slow in the late time. So three-point exponential approximation nonlinear smooth filter and approximative equal logarithm interval trace are adopted to display the dynamic profile map in time. In this way, the wrong data of the signal caused by ocean wave and factors else can be eliminated. The coplanar magnetic dipole-dipole configuration is adopted to accomplish the sea-floor detection. The canal of oil in the sea floor is detected by rule and line in this way.
Sea-floor transient electromagnetic method Induced electromotive force (EMF) Profile map Dynamic trace Signal-to Noise
HUI LI JUN LIN YANJU JI FENGDAO ZHOU YAN WANG CHANGSHENG LIU GUOHUA ZHOU
Key Lab of Geo-Information Exploration & Instrumentation, Jilin University, Changchun,Jilin 130026, Key Lab of Geo-Information Exploration & Instrumentation, Jilin University, Changchun,Jilin 130026,
国际会议
杭州
英文
1314-1317
2006-10-12（万方平台首次上网日期，不代表论文的发表时间）