 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( j. J/ W& X2 G/ C9 {, _! m; G: Z
+ Z- i, v1 i) u( L, l
7 s$ p2 U2 A' d l' G' s9 D4 h
4 x/ L9 \3 E" E$ D3 F' J3 ^- L/ a1 i9 p
(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:7 U5 R% ?, n' i ^0 y# y: k
: J' ]$ J0 x0 |, R, ~" A C
mz = -7.7 x 1022 A m2, mx = -0.479 x 1022 A m2, my = 1.399 x 1022 A m2.
2 x2 n: p9 f# d9 E: x. H0 b ~
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).
" J* ?9 e8 y5 q- x% L$ u |
|
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