IVM Data Reduction

RIVM

The RIVM package does most of the work.

  • Version 2.0 description
  • Version 3.0 modifications
  • Version 3.1 modifications
  • Version 3.2 modifications
  • Version 3.3 modifications
  • Version 3.4 modifications
  • Version 3.5 modifications
  • Version 4.0 modifications - In Progress
  • The latest cookbook gives specific tips on carrying through the reduction.

    An early version has some other descriptions.

    The reductions use and generate several databases that contain summary information on the instrument properties.


    Magnetic field computation

    Several methods are available.

  • Derivative method
  • Wavelet method
  • Radiative transfer modeling method

  • Ambiguity resolution, current computation

    A general discussion of azimuths is useful.

    Various packages exist for these functions.

  • Mees code packages

  • Velocity computation

    The methods for deriving the Doppler velocity from the IVM data are described here.


    IVM Scattering Light Measurements

    Science Grade Magnetograms

    The survey magnetograms are reduced on the date of observation using a quicklook version of the RIVM package. Science grade reductions are done offline. With several remote sites now performing science grade reductions, the following files list which data was processed and transfered to the Manoa archive by those sites.


    Last modified: Fri Jun 1 10:20:10 HST 2007