NSSDCA ID: SPMS-00398
Availability: At NSSDC, Ready for Offline Distribution (or Staging if Digital)
This microfilm data set, provided by the principal investigator, consists of plots of the observed magnetic vector anomaly values relative to the MGST (4/81) spherical harmonic model. The data used were obtained under magnetically quiet conditions and processed with fine-accuracy attitude information. The data set, however, was ordered according to the longitude of the equator crossings rather than to the time of observation. There are two segments of the data, one with northbound passes (dusk local time) and one with southbound (dawn local time). For each pass there are two frames, comprising a total of 12 plots divided into four groups: delta B, delta X, delta Y, and delta Z. In each group the data plotted are (1) observed anomaly component and ring-current corrections (there is no correction for the delta Y data); (2) linear trends and anomaly component minus the ring-current correction; and (3) anomaly component minus the ring-current correction minus the linear trends. All quantities are plotted vs latitude, within the range 65 deg south to 65 deg north latitude. Also included are altitude (on delta B plots), three parameters of the equatorial crossings (universal time, local mean time, and longitude), pass number, and number of points in each pass. The altitude is referenced to a 6371.2 km sphere.
Questions and comments about this data collection can be directed to: Coordinated Request and User Support Office
Name | Role | Original Affiliation | |
---|---|---|---|
Dr. Robert A. Langel, III | General Contact | NASA Goddard Space Flight Center |