科研之友
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摘要
We present the first direct comparison of the vertical electric fields in the E and F regions at Arecibo. The electric field is generally assumed to be height invariant and can be mapped from the F region to the E region along the magnetic field line. We develop a method to verify the electric field mapping by comparing the E and F region eastward ion drifts at heights where the E region vertical ion drift is zero. Our method avoids using the ion-neutral collision frequency, which is considered to be the most uncertain parameter in computing the E region electric field using radar measurements. The results show that the F region eastward ExB ion drift and the E region eastward ion drift at locations where vertical ion drift equals zero are not consistent. This implies that the E region vertical electric field is not the same as that from the F region.
- 出版日期2016-1
- 单位武汉大学
