PROTON VECTOR MAGNETOMETER
Journal Article
·
· J. Geophys. Research
BS>Z and H, as well as F, were measured at the Fredericksburg Magnetic Observatory with a proton vector magnetometer, combining a proton-precession intensity magnetometer and a Helmholtz coil system mounted on a horizontal circle. Formulas for the effect of various instrumental adjustments are given without proof; the only critical adjustment is the level of the horizontal circle (magnetometer base). The internal consistency of the observed values Z/sub p/, F/ sub p/, and H/sub p/ is indicated by the smallness of computed values H/sub p/-- (F/sub p/ --Z/sub p/),; these values are less than 3 gamma in magnitude and have a mean of 0.4 gamma . Preliminary results of comparisons with the observatory sine galvanometer and earth inductor are: PVM--SG (measurements of H)= 2.7 gamma , PVM--EI (measurements of dip) = 1". The source of the H difference is now being investigated. (auth)
- Research Organization:
- U.S. Coast and Geodetic Survey, Washington, D.C.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-14-016829
- OSTI ID:
- 4135971
- Journal Information:
- J. Geophys. Research, Journal Name: J. Geophys. Research Vol. Vol: 65
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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