Abstract
The cross‐field instability is an important process in the explanation of small‐scale sporadic E. Differences in the theories presented by different authors are apparent. It is true that there is no one‐to‐one correspondence of each Fourier component of perturbation between the electric field and the electron density about the direction of the ambient density gradient. The question arises as to how to choose properly the perturbation in the ambient charge gradient; but the difficulty does not seem serious. Computer experiments using realistic perturbations are desirable for the final answer on this question. The short‐circuiting effect along the geomagnetic field does not damp the electrical polarization with small transverse size, i.e., small east‐west wavelength. The upper limit of this size is a few hundred meters.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
