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PUBLICATION_DATE = 2017-03-02
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Mariner 9 Radio Science Derived Data
Ionospheric Electron Density Profiles
(MR9-M-RSS-5-ELEDENPROFILES-V1.0)
Nov 14, 1971 to June 25, 1972
=============================================================================
INTRODUCTION
=============================================================================
This dataset contains 114 ionospheric electron density profiles
(EDS files) derived from Mariner 9 radio occultation data.
The Mariner 9 electron density profiles have been
published graphically in [KLIORE1972A], [KLIORE1972B],
[KLIOREETAL1973], [ZHANGETAL1990], and [KLIOREETAL1992].
They were archived as microfilmed data tables and images
at the National Space Science Data Center (NSSDC) as dataset
PSPA-00141, and this archive is described further at
http://nssdc.gsfc.nasa.gov/nmc/datasetDisplay.do?id=PSPA-00141.
We requested data tables and plots of ionospheric
properties as functions of radial distance for all
occultations for which ionospheric peak properties were
reported in [KLIOREETAL1972B] and [KLIOREETAL1973].
We assumed that the absence of reported peak properties
for a given occultation meant that no useful ionospheric
profile was delivered to the archive. This approach
primarily selected ingress occultations with solar zenith
angles less than 90 degrees, although a handful of the
selected occultations have solar zenith angles between
90 and 100 degrees. Neutral properties, although present
in the archive and available to other interested
researchers, were not deemed useful for our purposes.
Please read CATALOG/DATASET.CAT for the remainder of the
data set description.
=============================================================================
ERRATA
=============================================================================
A cumulative list of errors and changes is maintained in the file
ERRATA.TXT at the root level of each volume. ERRATA.TXT in higher numbered
volumes (or higher version numbers) will have errors for earlier volumes.
=============================================================================
DISC FORMAT
=============================================================================
The disc is organized according to the PDS standard for "one data set,
one volume." This file (AAREADME.TXT), a PDS volume object definition
(VOLDESC.CAT), and the listing of errors and changes (ERRATA.TXT) are
included at the root level. The following directories of descriptive
material are also at the root level:
CATALOG contains descriptive files for cataloging the data
on this disc.
INDEX contains index information (table of contents) on each of
the data files included in this disc; it also includes a
cumulative index to all files in this set of discs.
The remaining directories at the root level contain data files and detached
PDS labels.
=============================================================================
FILE FORMAT
=============================================================================
All files associated with this data set are stored as simple ascii tables
with detached PDS labels.
=============================================================================
SOFTWARE
=============================================================================
No software is included with this data set.
=============================================================================
DISCLAIMER
=============================================================================
Although considerable care has gone into making this volume set, errors
are possible. Reports of errors or difficulties would be appreciated.
Please contact one of the persons listed below.
=============================================================================
COGNIZANT PERSONNEL
=============================================================================
The person most directly responsible for construction and release of
this volume set was Paul Withers. He created the data files and the
data set description contained in the DATA_SET.CAT file. Other PDS required
files were either copied from existing archive products (MISSION.CAT,
INST_HOST.CAT from the IMAGING Node Mariner 9 image archive) or created
by Steven Joy of the PDS-PPI Node.
Paul Withers
Phone: 617 353-1531
e-mail: withers@bu.edu
BOSTON UNIVERSITY
725 COMONWEALTH AVE
BOSTON, MA 02215
USA
Steven Joy
Phone: 310 825-3506
e-mail: sjoy@igpp.ucla.edu
UCLA
603 CHARLES E. YOUNG DRIVE, EAST
Los Angeles, CA 90095-1567
USA
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