Earth Magnetic Field

Dear Colleagues

Following up on our discussion earlier today - this National Geophysical Data Center site on the Earth's field:

http://www.ngdc.noaa.gov/seg/geomag/magfield.shtml
http://www.ngdc.noaa.gov/seg/geomag/jsp/IGRF.jsp

The field components for Bloomington, Newport News, Regina are given below. -- Alex

X is N-S with N positive
Y is E-W with E positive
Z is vertical with positive down

Newport News

Declination = -10.558° changing by -0.013 °/year
Inclination = 65.231° changing by -0.095 °/year
X component = 21,220.72 changing by 22.03 nT/year
Y component = -3,955.18 changing by -8.92 nT/year
Z component = 46,783.23 changing by -152.87 nT/year
Horizontal Intensity = 21,586.16 changing by 23.29 nT/year
Total Intensity = 51,523.13 changing by -128.98 nT/year

Bloomington

Declination = -3.524° changing by -0.084 °/year
Inclination = 67.832° changing by -0.075 °/year
X component = 20,217.78 changing by 15.27 nT/year
Y component = -1,244.9 changing by -30.65 nT/year
Z component = 49,715.96 changing by -144.48 nT/year
Horizontal Intensity = 20,256.07 changing by 17.15 nT/year
Total Intensity = 53,684.12 changing by -127.29 nT/year

Regina

Declination = 10.472° changing by -0.195 °/year
Inclination = 74.93° changing by -0.054 °/year
X component = 14,837.01 changing by 35.91 nT/year
Y component = 2,742.33 changing by -45.79 nT/year
Z component = 56,035.4 changing by -110.39 nT/year
Horizontal Intensity = 15,088.32 changing by 27.08 nT/year
Total Intensity = 58,031.23 changing by -99.53 nT/year