铯光泵磁力仪(G880)在海洋工程勘探方面的应用  

Application of G-880 cesium optical-pump marine magnetometer to marine engineering detection

作　　者：吴水根[1] 谭勇华[1] 周建平[1] 

机构地区：[1]国家海洋局第二海洋研究所,浙江杭州310012

出　　处：《海洋科学》2006年第5期5-9,共5页Marine Sciences

基　　金：中国大洋矿产资源研究开发学会资助项目(DY105-03-01-05)

摘　　要：为准确测出光、电缆的位置，利用G880铯光泵磁力仪，在芦潮港和大小洋山之间进行了磁力探测。经过探测，海底通信光缆能引起8～20nT磁异常，海底动力电缆能引起约2000nT的强异常，根据磁异常形态曲线可定出光缆的位置。依据光缆的结构原理图，分析探讨光、电缆产生磁异常的原因。Along with the fast development of communications in the littoral, the engineering to lay optical cables in the sea bed is more and more [requently being done and interlaced optical cables are incidentally de- stroyed by artificial and natural causes or the request of ocean engineering. This demands to survey well and truly locate the position of optical cables. We used G-880 cesium optical-pump marine magnetometer to survey magnetic fields between Luchao port, big mountain and small mountain. We find that communication optical cable can arouse some magnetic anomaly from 8 nT to 20 nT, and the power cable can arouse an aomaly about 2 000 nT. Basing on the anomaly shape, we can confirm the positions of the optical cable and power cable. And according to the makeups of optical cable and power cable, we can analyze and discuss the source of magnetism anomaly.

关 键 词：光泵磁力仪 光缆 磁异常 铁磁性障碍物 

分 类 号：P64[天文地球—地质矿产勘探]