 鲜花( 2)  鸡蛋( 0)
|
知道地球磁场的single dipole moment Mx, Mz,My如何求 相交的位置# L' s" Z) ] r9 [ b
* x) l" G# {+ W0 }
+ B. [$ C0 M. E& O! p* Z
# f7 S# ?. y; t2 b# g1 ?# D
(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:
& N2 [8 e8 O7 R {/ `! n) w. Z2 c' H+ `' Y2 B' ^6 u
mz = -7.7 x 1022 A m2, mx = -0.479 x 1022 A m2, my = 1.399 x 1022 A m2.1 H' {6 _: r3 w
# ], Q, a5 S" A% ]$ d) U7 H
Calculate 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).7 |: w" L [" t4 C
|
|
狗仔卡
发表于 2012-4-2 21:27
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
显身卡