The GLE of 14 July 2000: comparative analysis of increase effect on close neutron monitors in Apatity and Oulu

Details The GLE of 14 July 2000: comparative analysis of increase effect on close neutron monitors in Apatity and Oulu The GLE of 14 July 2000: comparative analysis of increase effect on close neutron monitors in Apatity and Oulu

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001icrc....8.3383v&link_type=abstract

Proceedings of the 27th International Cosmic Ray Conference. 07-15 August, 2001. Hamburg, Germany. Under the auspices of the Int

Physics

3

Scientific paper

Count rates of two closely located neutron monitors (NMs) at Oulu and Apatity depicted an unusually different behaviour during the onset phase of the ground- level enhancement (GLE) of 14 July 2000. Similar differences were observed during the onsets of GLEs of 2 May 1998 and 15 April 2001. All these three events took place after a strong Forbush decrease, implying significantly disturbed interplanetary and geomagnetic conditions. In all cases the NM with a higher count rate (Oulu on 2 May 1998 and 15 April 2001, Apatity on 14 July 2000) was located in the so-called 14 MLT region (1416 hours of Magnetic Local Time) where the maximum dayside auroral intensity and some other anomalous geophysical phenomena are located. Here we analyse these events using data from Apatity, Oulu and some other NMs, as well as their asymptotic cones calculated using the Tsyganenko 1989 magnetospheric model. We suggest that there is an anomaly in magnetospheric structure in the 14 MLT sector which facilitates the penetration of cosmic ray protons from the dayside magnetopause to the ground.

Affiliated with

Also associated with

No associations

Rating

The GLE of 14 July 2000: comparative analysis of increase effect on close neutron monitors in Apatity and Oulu 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 The GLE of 14 July 2000: comparative analysis of increase effect on close neutron monitors in Apatity and Oulu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The GLE of 14 July 2000: comparative analysis of increase effect on close neutron monitors in Apatity and Oulu will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-798899