Time Delay in the Development of Geomagnetic Disturbances

Details Time Delay in the Development of Geomagnetic Disturbances Time Delay in the Development of Geomagnetic Disturbances

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sm52a07l&link_type=abstract

American Geophysical Union, Spring Meeting 2001, abstract #SM52A-07

Physics

2700 Magnetospheric Physics, 2784 Solar Wind/Magnetosphere Interactions, 2788 Storms And Substorms

Scientific paper

An extensive statistical analysis shows the existence of a long (half hour and more) time delay between variations of solar wind parameters near the magnetopause and related variations of geomagnetic activity on the ground. Such time delay is observed not only for the AL index related to substorm activity but also for the AU index which is thought to be related mainly to directly driven convection variations. It is shown also that the development of geomagnetic disturbances is dependent not on instantaneous magnitudes of solar wind parameters, but on their magnitude obtained by integrating over a long period, which for the AU index is about two and more hours. A possible cause for this time delay can be ionosphere-thermosphere coupling leading during disturbed time to an increase in the neutral wind in the high-latitude E region, which supports ionospheric currents after cessation of an initial electric field, as suggested earlier by some authors.

Affiliated with

Also associated with

No associations

Rating

Time Delay in the Development of Geomagnetic Disturbances does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Time Delay in the Development of Geomagnetic Disturbances, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time Delay in the Development of Geomagnetic Disturbances will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1278347