Comparisons of bow shock crossings at Earth using a multi-spacecraft database

Details Comparisons of bow shock crossings at Earth using a multi-spacecraft database Comparisons of bow shock crossings at Earth using a multi-spacecraft database

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja.....4558p&link_type=abstract

EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #4558

Computer Science

Scientific paper

Earth's bow shock represents the outermost boundary between that region of geospace which is influenced by Earth's magnetic field and the largelyundisturbed interplanetary medium streaming from the Sun. For many years this boundary has been crossed by Earth-orbiting satellites. We have put together a web-accessible database of bow shock crossings from IMP 8, Geotail, Magion-4, and Cluster to facilitate statistical studies and cross-comparisons between satellites. This NSSDC database stores lists of bow shock crossings for each satellite as well as associated observed and derived parameters. The underlying ASCII files are ftp-accessible. The basic IMP 8 observed parameters were provided by IMP magnetometer and plasma teams at GSFC (Szabo, Merka) and MIT (Richardson, Paularena), and will grow to encompass all 1973-2001 IMP 8 bow shock crossings. Geotail bow shock crossings currently include 1995, 1996 and 1997 at the bow shock flanks but will grow to include all crossings from 1995 onward. J. Safrankova and Z. Nemecek supplied two years worth - 1995, 1996 - of Magion-4 (Interball-Tail's sub satellite) bow shock crossings. Cluster bow shock crossings determined from the prime parameters are currently supplied for the first two years of operation - 2001 and 2002 - from one satellite, but will grow to include subsequent years. We describe database functionality and show examples of nearly simultaneous crossings.

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