PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT PUBLICATION_DATE = 2002-08-20 NOTE = "AAREADME.TXT describes the contents of this DVD-R volume." END_OBJECT = TEXT END Voyager 2 Jupiter Encounter Data DVD-R (VG_1502) of the Planetary Data System 1979-04-25 to 1979-08-18 ============================================================================ Introduction ============================================================================ This DVD-R contains data recorded during the Voyager 2 Jupiter Encounter and submitted to the Planetary Data System (PDS) by Voyager CRS, LECP, MAG, PLS, PRA, and PWS investigators. This volume covers the period from 1979-04-25 to 1979-08-18. While the Jupiter Encounter Phase has been defined as 1979-04-25 to 1979-08-05, the actual start and end times of the data sets included on the Voyager 2 Jupiter Encounter volumes vary considerably. Most of the instruments only recorded Jupiter-related data for a portion of the Encounter Phase. Since, however, the PRA instrument can record planetary phenomena at much larger ranges than the other fields and particles instruments, PRA coverage includes the full Jupiter Encounter Phase. Data sets appearing on this DVD-R as version 1.1 were previously archived with the NSSDC and PDS as version 1.0. Changes include reformatting of the time column, standardization of flag values, and upgrading of labels and catalog templates to PDS Version 3.4. Data sets found on this DVD-R supersede all previous versions. Every effort has been made to insure that the data are of the best quality available. However, the PDS and the Planetary Plasma Interactions (PPI) Node in particular, assume no liability for this volume or its contents. Users are encouraged to verify the 'correctness' of the data prior to submitting any publications or other work based on these data. ============================================================================ Brief Disk Description ============================================================================ This DVD-R is organized into 4 principal and 1 optional sub-directories: CATALOG PDS catalog templates describing the Voyager mission, spacecraft, instruments, data sets, key personnel and references. DATA Science data from the following instruments: CRS (Cosmic Ray Subsystem), LECP (Low Energy Charged Particle), MAG (Fluxgate Magnetometer), PLS (Plasma Science Experiment), PRA (Planetary Radio Astronomy Receiver), and PWS (Plasma Wave Receiver). DOCUMENT Documents describing instruments, data sets, or software contained on this volume. INDEX Index of all user files with .LBL files contained on this volume. EXTRAS/SOFTWARE Executables and source code, plus instructions for obtaining any other software that may be available, for use with the data. EXTRAS/SPICE Copies of the SPK, PCK, and LSK SPICE kernels. More information on directory structure is contained in the section entitled 'Volume Contents and Structure.' Novice users, however, may ignore all files and directories except for the 'Important Files and Directories' listed below. ============================================================================ Important Files and Directories ============================================================================ All data except two are in ASCII format and stored in the /DATA branch of the directory tree. The exception files are in binary format. The contents of each data file is described by a detached PDS label file (.LBL). A file named INFO.TXT provides additional information about data sets and directory contents. An *INFO.TXT file (e.g. CATINFO.TXT, etc.), containing a description of the directory tree and sub-directory contents, is located in every directory immediately below the root. The INFO.TXT files provided on selected data sub-directories contain detailed descriptions of the directories on which they are located. ============================================================================ Volume Series Information ============================================================================ This DVD-R is the second volume of the 'VOYAGER AT JUPITER - FIELDS AND PARTICLES LOW RATE SCIENCE' (VG_15xx) volume set. Volumes in this set include: Volume ID Medium Volume Name Type VG_1501 (CD-R) Voyager 1 Jupiter Encounter Data (1979-02-28 to 1979-03-22) VG_1502 (DVD-R) Voyager 2 Jupiter Encounter Data (1979-04-25 to 1979-08-18) VG_1504 (CD-R) Voyager 1 and 2 Jupiter Encounter PRA High Res. Lowband Data. VG_1505 (CD-R) Voyagers 1 and 2 Jupiter Encounter LECP High Res. Data. Data originally in Volume VG_1503 have been included into the Volume VG_1502. Volume VG_1503 no longer exists on this volume set. Also available from the PDS is Voyager PWS Waveform Wideband Data (10 volumes from VG1, and 4 volumes from VG2). To order these data, or obtain information about additional Jupiter data which may be available please contact the PDS/PPI node (see the end of this file for contact information). ============================================================================ Documents ============================================================================ The documents provided on this DVD-R (in the /DOCUMENT sub-directories) include copyrighted materials previously published in Space Science Reviews, Vol. 21, No. 2, pp. 77-101, November 1977, and Space Science Reviews, Vol. 21, No. 3, pp. 235-376, December 1977. These materials appear on this DVD-R with the permission of Kluwer Academic Publications (Kluwer). Kluwer retains Copyright over these articles. Please see the Copyright statement appearing at the beginning of each of the Space Science Reviews articles. ============================================================================ File Formats ============================================================================ All of the label, table, and text files are ASCII with CR/LF (VAX/IBM-PC) format. All files on this volume are described by detached or combined detached PDS labels. PDS labels have a file extension of '.LBL' and generally have the same name as the file which it describes. All PDS label files on this DVD-R are completely PDS Standards Version 3.4 compliant. Data files are stored in ASCII (.TAB) and binary (.DAT) format. The file records are generally fixed length with space or comma delimited fields or columns. Refer to the label (.LBL) for information about the format and structure of a specific data file. Document files are reproduced from articles on the Space Science Reviews, and are stored in both plain ASCII text (.ASC) and HTML (.HTM) versions. Figures, tables and equations from the original documents have been scanned and are provided in GIF89A format. PDS labels are object-oriented. The object to which the label refers (e.g., SERIES, TABLE, etc.) is denoted by a statement of the form: ^object = location in which the caret character (^, also called a pointer in this context) indicates that the object starts at the given location. For an object in the same file as the label, the location is an integer representing the starting record number or byte of the object (the first record/byte in the file is 1). If this value is omitted, then the data begin at record one (1). For an object located outside the label file, the location denotes the name of the file containing the object, along with the starting record or byte number. Examples: ^TABLE = "ELE_MOM.TAB" The first example points would tell the user that file ELE_MOM.TAB is described by a TABLE object and the data begin at record 1 of the file. The data file exists in the same directory as the detached label file. Below is a list of the possible formats that use the ^object keyword. ^object = n ^object = n ^object = ("filename.ext",n) ^object = ("[dirlist]filename.ext",n) ^object = ("filename.ext",n) ^object = ("[dirlist]filename.ext",n) where n is the starting record or byte number of the object, counting from beginning of the file (record 1, byte 1); default is record number. indicates that number given is in units of bytes. filename is upper-case file name. ext is upper-case file extension. [dirlist] is a period-delimited path-list of parent directories, in upper case, that specifies the object file directory (used only when the object is not in the same directory as the label file).* * All PDS labels on this volume are located in the same directory as the file they describe, so this construct is not used here. ============================================================================ Errata ============================================================================ There is a file called ERRATA.TXT found at the root level of this volume which contains a list of known deficiencies or caveats associated with data on this volume at the time this DVD-R was published. Any changes or errors found on this volume after its production can be obtained via the web site: http://www.igpp.ucla.edu/public/pds/ERRATA/VG_1502/ERRATA.TXT. If you find an error on this volume, please report the error to the PDS Operator at the PPI Node of the PDS. Internet: pds_operator@igpp.ucla.edu Telephone: (310) 206-6073 U.S. Mail: PDS Operator c/o Dr. Raymond Walker UCLA - IGPP Los Angeles, CA 90095-1567 Only through the support and feedback of the users of these data can an effective errata list be maintained. ============================================================================ Volume Contents and Structure ============================================================================ The tree diagram below provides a listing and brief description of the contents and key files of the root directory and /DATA sub-directories. Note that some files may be omitted from this description. Each file on this DVD-R (with the exception of *.CAT files) is associated with a PDS label file (.LBL) which describes its content and characteristics. For more information, please refer to the *INFO.TXT files located in each of the sub-directories of the root directory, or the INFO.TXT files located in the individual data sub-directories.

Square brackets ([]) denote directories. Please note also that the /DATA directory is listed out of alphabetical order to make this tree more readable. VG_1502 (root directory) | |- AAREADME.TXT (This file) describes volume contents, organization, | and DVD-R use. | |- ERRATA.TXT File describing errors and anomalies found on this | DVD-R. | |- VOLDESC.CAT High level description of DVD-R contents | |-[CATALOG] Contains metadata associated with this DVD-R, | including mission, instrument host (spacecraft), | instrument, data set, personnel and reference | descriptions and information (*.CAT files). | |-[DOCUMENT] Contains a mission and 6 instrument sub-directories | which contain documents relating to one or more | data sets. An ASCII version (*.ASC), with tables | and equations reproduced using ASCII characters, | is provided for each document. HTML versions (*.HTM) | are also provided for selected documents. Figures, | tables and some equations have been scanned and | provided in GIF89A format (*.GIF). | |-[INDEX] Contains a listing including file name, location, and | volume and data set association for all user files | with PDS labels contained on this DVD-R and the other | volumes in the Voyager at Jupiter - Fields and Particles | Low Rate Science volume set. | |-[EXTRAS/SOFTWARE] | Contains software and software documents for use | with some or all of the data contained on this | volume. The files including executables, documentation, | and source code (where available), are arranged into | separate sub-directories according to the platform | on which they are designed to run. | |-[EXTRAS/SPICE] Contains copies of the SPICE SPK (VG2_JUP.TSP), PCK | (PCONST.TCP), and LSK (LEAPSECS.TLS) kernels. All SPK, | PCK, and LSK kernels are in ASCII format. Note that | this DVD-R is not the official archive for these SPICE | kernels. The PDS/NAIF node officially provides these | data. | |-[DATA] Contains 6 science instrument and 1 ephemeris | sub-directories. Each ASCII data file is accompanied | by a PDS label file (.LBL) which describes data file | contents. Please refer to the INFO.TXT file located | in each data sub-directory for a more detailed | description of directory contents. | |- DATAINFO.TXT Contains an overview of the /DATA directory | tree and the contents of each of the data | sub-directories | |-[CRS] Cosmic Ray Subsystem (CRS) proton, ion, and | electron flux browse data covering 1979-07-03 | to 1979-08-03. | |-[EPHEM] SEDR-based SPICE based Voyager 2 ephemeris near | Jupiter provided in Heliographic (RTN) and | System III (1965) coordinates covering 1979-06-20 | to 1979-08-18. | |-[LECP] LECP Scan averaged (over all sectors) and sectored | charged particle counting rate data covering | 1979-07-02 to 1979-08-04. | |-[MAG] Magnetic field data in Heliographic (RTN) and | System III (right handed) coordinates in 1.92, | 9.6, and 48 second averages. Magnetometer sensor | offset estimates in Spacecraft Coordinates are | also provided in 48 second averages. Data covers | 1979-06-20 to 1979-08-19. | |-[PLS] PLS electron and ion moment and fit data from the | jovian magnetosphere, l-mode magnetosheath, m_mode | magnetosheath, and solar wind data covering | 1979-07-02 to 1979-08-12. | |-[PRA] Radio Astronomy browse data covering 1979-04-25 | to 1979-08-04. | |-[PWS] PWS spectrum analyzer wave electric-field | intensities data covering 1979-07-02 to 1979-08-03. | ============================================================================ Driver and Hardware Information ============================================================================ This volume has been formatted according to the ISO (9660) standard for DVD-R production with level 2 compliance. Any system which complies with this standard (all of them should) should be able to access this volume. ============================================================================ Contacts ============================================================================ The person most directly responsible for the construction and release of this DVD-R is Mr. Steven Joy. He was the PPI Node Data Administrator at the time this volume was created and understands as much about the volume structure and data organization as anyone. The construction of the PDS labels and templates was done by Mr. Joe Mafi. Other PPI personnel who may be aware of issues related to this DVD-R include Ms. Eva Fried, Ms. Xinping Liu and Dr. Raymond Walker, the PDS/PPI Node manager. For questions or problems regarding this DVD-R volume, please contact the PDS/PPI PDS operator: Internet: pds_operator@igpp.ucla.edu Telephone: (310) 206-6073

U.S. Mail: PDS Operator c/o Dr. Raymond Walker 3845 Slichter Hall UCLA - IGPP Los Angeles, CA 90095-1567 For questions regarding PDS Standards or other CD-ROM's available from the PDS, please contact the PDS Operator at the PDS Central Node (at JPL): Internet: pds_operator@jpl.nasa.gov Telephone: (818) 354-4321

U.S. Mail: Planetary Data System, PDS Operator Jet Propulsion Laboratory Mail Stop 202-101 4800 Oak Grove Dr. Pasadena, CA 91109-8099 The PDS, and the Planetary Plasma Interactions (PPI) Node in particular, assume no legal liability for errors on this volume. All users are encouraged to verify the "correctness" of the data prior to submitting any publications or other work based on these data. Errors on this volume should be reported back to the PPI Node of the PDS through the procedures described in the ERRATA section.