000 01297nam a2200277Ia 4500
001 197204
003 BIBL
005 20160527192745.0
008 920109c19899999couar u f eng d
035 _a(OCoLC)25071912
040 _aGIS
_cGIS
_dMNM
049 _aPUXA
090 _aQC830.U5
_bU5
245 0 0 _aUSGS/NGIC geomagnetic observatory data
_h[computer file].
260 _aDenver, Colo.
_bU.S. Geological Survey, National Geomagnetic Information Center
_c1991-
300 _acomputer laser optical disks
_c4 3/4 in.
_ecomputer disks (5 1/4 in.) + user manual
310 _aAnnual, with 5-year archival cumulations
362 0 _a1985-1989-
500 _aTitle from disk label.
500 _aDisk Characteristics: CD-ROM
520 _aContains one-minute values of geomagnetic data from all magnetic observatories of the USGS network. The values are provided as 3-component vector data from a fluxgate magnetometer, as well as scalar data from a proton precession magnetometer.
538 _aSystem requirements: IBM PC or compatible; EGA; VGA; presentation software GODIS written in C-language.
650 4 _aGeomagnetism
_xObservations
_xCD-ROM.
_2Local
_9101972
650 0 _aCD-ROM Fed. Doc.
_2Local
_971074
710 2 0 _aNational Geomagnetic Information Center U.S.
_2Local
_9141302
999 _c149164
_d149164