Airborne vector magnetics mapping of remanently magnetised banded iron-formations at Rocklea, Western Australia
Airborne vector magnetics mapping of remanently magnetised banded iron-formations at Rocklea, Western Australia
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DOI：
10.1071/aseg2003ab041
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发表时间：
2003-06
期刊：
影响因子：
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通讯作者：
M. Dransfield;A. Christensen;Guimin Liu
中科院分区：
文献类型：
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作者：
M. Dransfield;A. Christensen;Guimin Liu
在哈默斯利盆地带状铁地层（bif）中发现的强剩磁源影响了标准总磁强度测量数据的解释。使用FALCONTM机载重力梯度仪（AGG）系统提供的飞机姿态信息，可以在地理上参考飞机上磁通门三联体收集的矢量磁信息。一个完整的飞机补偿处理方法，允许永久，感应和涡流效应，提供可用的矢量磁数据。这些数据为解释强烈残留的bif提供了有价值的额外信息。利用FALCONTM在哈默斯利盆地Rocklea Dome附近进行的调查数据的一个例子表明，通过使用矢量剩余磁场强度数据，改进了bif的测绘。
Strongly remanent magnetic sources such as those found in the banded iron-formations (BIFs) of the Hamersley Basin impair the interpretation of standard total magnetic intensity survey data. The use of aircraft attitude information, provided by the FALCONTM airborne gravity gradiometer (AGG) system, makes it possible to reference geographically the vector magnetic information collected by the fluxgate triad on board the aircraft. A full aircraft compensation processing method, allowing for permanent, induced and eddy current effects, provides usable vector magnetic data. These data supply valuable extra information for the interpretation of strongly remanent BIFs. An example using data from a FALCONTM survey near the Rocklea Dome in the Hamersley Basin demonstrates improved mapping of the BIFs by the use of the vector-residual magnetic intensity data.