These Data are from a Re-Analysis of the Voyager Plasma Spectrometer, PLS, Data at Jupiter by the PLS Group at the Laboratory for Atmospheric and Space Physics, LASP, at the University of Colorado. Density, Temperature, and Flow Velocity Fits for total and individual Ions were done using the Voyager Ion PLS Experiment Response, VIPER, Code and Error Analysis as described at http://lasp.colorado.edu/home.mop/missions/voyager/viper/. Fits are determined from processing of the Ion Currents from the A, B, C, and D Cups of the Instrument. As per the Fit Case Variable, one of five different Constraints were used in the VIPER Fits for each 96 s Time Interval: (1) Free Variation of all Parameters (mainly for the cold Ion Torus), (2) Constraint of the Ion Abundances for the five major Species (O+, O++, S+, S++, S+++) to standard Composition as determined from Delamere et al., (2005), (3) fixed Ion Composition and Flow Speed, (4) Cold Blobs in the Plasmasheet where resolved Peaks can be Fit with allowance for some Variance in Composition, (5) Interpolation between Composition of Cold Torus and standard Abundances at 6 RJ from Delamere et al., (2005). Reference: Delamere, P.A., Bagenal, F., and Steffl, A. (2005), Radial Variations in the Io Plasma Torus During the Cassini Era, J. of Geophys. Res., Space Phys., 110(A12), A12223, doi:10.1029/2005JA011251.
Version:2.3.0
These Data are from a Re-Analysis of the Voyager Plasma Spectrometer, PLS, Data at Jupiter by the PLS Group at the Laboratory for Atmospheric and Space Physics, LASP, at the University of Colorado. Density, Temperature, and Flow Velocity Fits for total and individual Ions were done using the Voyager Ion PLS Experiment Response, VIPER, Code and Error Analysis as described at http://lasp.colorado.edu/home.mop/missions/voyager/viper/. Fits are determined from processing of the Ion Currents from the A, B, C, and D Cups of the Instrument. As per the Fit Case Variable, one of five different Constraints were used in the VIPER Fits for each 96 s Time Interval: (1) Free Variation of all Parameters (mainly for the cold Ion Torus), (2) Constraint of the Ion Abundances for the five major Species (O+, O++, S+, S++, S+++) to standard Composition as determined from Delamere et al., (2005), (3) fixed Ion Composition and Flow Speed, (4) Cold Blobs in the Plasmasheet where resolved Peaks can be Fit with allowance for some Variance in Composition, (5) Interpolation between Composition of Cold Torus and standard Abundances at 6 RJ from Delamere et al., (2005). Reference: Delamere, P.A., Bagenal, F., and Steffl, A. (2005), Radial Variations in the Io Plasma Torus During the Cassini Era, J. of Geophys. Res., Space Phys., 110(A12), A12223, doi:10.1029/2005JA011251.
| Role | Person | |
|---|---|---|
| 1. | PrincipalInvestigator | spase://SMWG/Person/John.D.Richardson |
| 2. | PrincipalInvestigator | spase://SMWG/Person/Frances.Bagenal |
| 3. | MetadataContact | spase://SMWG/Person/Robert.E.McGuire |
| 4. | MetadataContact | spase://SMWG/Person/Lee.Frost.Bargatze |
Voyager PLS Instrument Documentation, MIT
Fits to Spectra Source Data at the Laboratory of Atmospheric and Space Physics, LASP, University of Colorado, Boulder
The VIPER Web Page, LASP
The VIPER Instruction Manual, LASP
Access to Data in CDF Format via ftp from SPDF
Access to Data in CDF Format via http from SPDF
Access to ASCII, CDF, and Plots via NASA/GSFC CDAWeb
Interval centered Time Tag rounded to the nearest Millisecond
Integer Value for Start Date, Integer Year
Decimal Start Date equal to the Interger Year plus the Fraction of the Year for the given Observation
Start Date, Integer Day of Year
Start Date, Integer Hour of Day
Start Date, Integer Minute of Hour
Start Date, Integer Seconds of Minute
Spacecraft Location, Radial Distance in Jupiter Radii, Rj, Right-Handed System III, RHSIII, Coordinates
Spacecraft Location, Co-Latitude in Right-Handed System III, RHSIII, Coordinates
Spacecraft Location, East Longitude in Right-Handed System III, RHSIII, Coordinates
Fit Case Number 1-5, designates how the Fit Parameters were handled by the VIPER Code
Bulk Plasma Flow Velocity, Radial Component in Right-Handed System III, RHSIII, Coordinates
Bulk Plasma Flow Velocity, East Longitude, Phi, in Right-Handed System III, RHSIII, Coordinates
Bulk Plasma Flow Velocity, Northward Component in Right-Handed System III, RHSIII, Coordinates
Total Sum of Ion Charge Number Densities
Proton, H+, Ion Partial Number Density
Proton, H+, Ion Temperature
Singly Charged Oxygen, O+, Ion Partial Number Density
Singly Charged Oxygen, O+, Ion Temperature
Doubly Charged Oxygen, O++, Ion Partial Number Density
Doubly Charged Oxygen, O++, Ion Temperature
Singly Charged Sulfur, S+, Ion Partial Number Density
Singly Charged Sulfur, S+, Ion Temperature
Doubly Charged Sulfur, S++, Ion Partial Number Density
Doubly Charged Sulfur, S++, Ion Temperature
Triply Charged Sulfur, S+++, Ion Partial Number Density
Triply Charged Sulfur, S+++, Ion Temperature
Sodium, Na+, Ion Partial Number Density
Sodium, Na+, Ion Temperature
Singly Charged Sulfur Dioxide, SO2+, Ion Partial Number Density
Singly Charged Sulfur Dioxide, SO2+, Ion Temperature
Hot Oxygen, O+, Ion Partial Number Density
Hot Oxygen, O+, Ion Temperature