PDS_VERSION_ID        = PDS3
RECORD_TYPE           = STREAM
OBJECT                = TEXT
  PUBLICATION_DATE    = 2015-03-24
  NOTE                = "Description of the DOCUMENT directory contents
                         for the EPPS document volume."
END_OBJECT            = TEXT
END

The DOCUMENT directory contains documentation that is considered to be
either necessary or useful for users to understand the archive data sets.
Documents may be included in multiple forms (ASCII, PDF, MS Word, HTML
with image file pointers, etc.). Documents in different formats are
included in subdirectories that collect together those with the same
content. Included are the following documents.

<DOCUMENT> DOCINFO.TXT: Identifies and describes the function of each
file in the DOCUMENT directory. (This File)


<DOCUMENT\DDR_SIS> EPPS_DDR_SIS.PDF (.DOCX, .TXT, .LBL):  The EPPS DDR SIS: 
"MESSENGER Software Interface Specification for the Derived Data Records 
of the Energetic Particle and Plasma Spectrometer". The document is provided
in multiple formats, the original being the MS Word document which has been
saved in the PDF/A archive format, and in plain ASCII text. The PDS label
describes all of the document versions.

<DOCUMENT/FLUXMAP_PITCHANGLE_TUTORIAL> Contains a tutorial whose purpose is 
to enable the user to construct 2D angular flux maps (AFM) and energy resolved 
pitch angle (ERPA) distributions from observations by the Fast Imaging Plasma 
Spectrometer (FIPS) on MESSENGER.  These data products are useful for a 
variety of investigations of the Mercury plasma environment.  Studies of the 
plasma mantle and sodium plasma population have made extensive use of the AFM 
to investigate plasma isotropy or bulk flow directions (Gershman et al. 2015; 
DiBraccio et al. 2015).  Work done with the magnetic cusp at Mercury utilized 
both the AFM and the ERPA distribution.  With the combination of the 
directional and pitch angle information, details of the energization and 
precipitation processes in the cusp could be elucidated (Raines et al. 2014).
The tutorial includes a primary document, sample IDL codes and sample data.

<DOCUMENT/NTP_TUTORIAL> Contains a turorial whose purpose is to enable the user 
to interpret the density, temperature, and pressure (NTP) moments from 
observations by the Fast Imaging Plasma Spectrometer (FIPS) on MESSENGER. 
These parameters are useful for a variety of investigations of Mercury’s 
plasma environment. For example, these moments were used to determine the 
average characteristics of the plasma sheet (Raines et al., 2011; 
Gershman et al., 2014) and to distinguish the plasma sheet from the 
magnetotail lobes (Sun et al., 2016). The derived moments were also used 
to assess the pressure balance across the dayside magnetopause to understand 
the nature of dayside magnetic reconnection at Mercury (Gershman et al., 2013).
he tutorial includes a primary document, sample IDL codes and sample data.


The EPPS instrument paper is available online:

    Andrews, G. B., T. H. Zurbuchen, B. H. Mauk, H. Malcom, L. A.
    Fisk, G. Gloeckler, G. C. Ho, J. S. Kelley, P. L. Koehn, T. W.
    LeFevere, S. S. Livi, R. A. Lundgren, and J. M. Raines, The
    Energetic Particle and Plasma Spectrometer instrument on the
    MESSENGER spacecraft, Space Science Reviews, 2007, 
    DOI: 10.1007/s11214-007-9272-5. [ANDREWSETAL2007]