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[其他] 求助一到地球物理的题

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发表于 2012-4-2 21:27 | 显示全部楼层 |阅读模式
老杨团队,追求完美;客户至上,服务到位!
知道地球磁场的single dipole moment Mx, Mz,My如何求 相交的位置& C# Z& t! x5 w# i* ], `

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(2) The Earth’s main magnetic field at the surface (radius = 6371 km) can be approximated by a single dipole moment at the Earth's centre with the following (x,y,z) components:
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mz = -7.7 x 1022 A m2, mx = -0.479 x 1022 A m2, my = 1.399 x 1022 A m2.
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& M1 u1 V  M; y# Q5 k3 A3 a/ O5 HCalculate the location (latitude, longitude) where the axis of this dipole field intersects the Earth's surface (i.e. where the magnetic field is locally purely vertical and upward).! M% X) ?( ~" G3 i: _
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