< p >如果我们只考虑自然生成的磁场源,而不是由人类活动产生的。总的趋势是高强度的磁场磁极附近发生。然而,这仅仅是一个大趋势。南半球经历磁场强度最高,达到65000元,这南方最大匹配与南磁极相当好。相比之下,在北半球,最大值发生在西伯利亚,远离北磁极< a href = " https://en.wikipedia.org/wiki/Earth%27s_magnetic_field " rel = " nofollow noreferrer " >目前非常接近的地理北极< / >。< / p > < p >有许多型号的地球磁场。你可以找到一个全面的列表在< a href = " http://geomag.org/models/index.html " rel = " nofollow noreferrer " > geomag.org < / >。你可以找到的强度输出< a href = " https://ngdc.noaa.gov/geomag/WMM/DoDWMM.shtml " rel = " nofollow noreferrer " > NOAA的世界Margentic模型2015年< / >,< a href = " https://ngdc.noaa.gov/geomag/WMM/data/WMM2015/WMM2015_F_MERC.pdf " rel = " nofollow noreferrer " > < / >。shapefile轮廓可供2018 < a href = " https://ngdc.noaa.gov/geomag/WMM/image.shtml " rel = " nofollow noreferrer " > < / >在这里(以及更多的地图),和南北两极的坐标计算个子模型可用2020 < a href = " https://www.ngdc.noaa.gov/geomag/GeomagneticPoles.shtml " rel = " nofollow noreferrer " > < / >。整理2018年的所有信息,地图是这样< a href = " https://i.stack.imgur.com/dVdvt.jpg " rel = " nofollow noreferrer " > < img src = " https://i.stack.imgur.com/dVdvt.jpg " alt = "在这里输入图像描述" > < / > < / p > < p >等高线间距为1000新台币,网格线间隔10°,绿点代表南和北磁极。< / p > < p >最大强度轮廓在北半球发生在西伯利亚的价值61000元和轮廓的中心位于约3100公里的磁北极。< / p > < p >最大强度轮廓在南半球澳大利亚和南极洲之间价值67000元和轮廓的中心位于约450公里的磁南极。< / p > < p >所以答案是:<强>是的,有。 Maximum field intensity doesn't happen at the magnetic poles. Specially in the Northern hemisphere, the maximum intensity happens in Siberia, a few thousand kilometers away from the magnetic pole. The maximum intensity globally according to NOAA's WMM model is located in the southern hemisphere, approximately at 60° 15' S, 135° 52' E, about 450 km away from the south magnetic pole The projection in the map above (geographic) generates a big distortion of the distances, the images below show the same information in polar stereographic projection:
Now, it is worth adding that the above information wouldn't be significantly modified if you consider natural magnetic anomalies due to magnetic crustal deposits. This is because magnetic anomalies are usually smaller than a few hundred nT, therefore the magnetic field intensity pattern is largely controlled by the internal magnetic field. Magnetic anomalies are not mapped over the whole world, but the World Digital Magnetic Anomaly Map, provides a pretty good estimate
However, these anomalies are measured at an altitude of 5 km above mean sea level, and have a resolution of 3-arc-minute resolution (~5 km). Therefore, it doesn't rule out the existence of very strong and localized small scale anomalies, that might lead to large variations on the magnetic field intensity but over a very small area. The maximum value within the World Digital Magnetic Anomaly Map dataset is 8570.78 nT, but even considering all anomalies, the largest field intensities remain within the same contour near the magnetic south pole.