Volume PV07_0002 Pioneer Venus Orbiter - Venus Orbital Operations CD-ROM Electron Temperature Probe Processed Datasets Orbits 2501-5055 Planetary Plasma Interactions Node of the Planetary Data System ============================================================================== Introduction ============================================================================== This disk contains Venus Orbital Operations data submitted to the Planetary Data System (PDS) by PVO Electron Temperature Probe (OETP) Experiment project investigators. Every effort has been made to assure 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 disk or its contents. All 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 CD-ROM contains data for orbits 2501-5055 covering the time period between 1985-10-10 to 1992-10-07. All data files are stored in the "DATA" branch of the directory tree. Data are stored in ASCII (.TAB) files, 1 file per orbit for the electron density profiles. Each data file is described by a corresponding PDS label file (.LBL) and a format file (.FMT). Users of this disk should read the INFO.TXT file located in the DATA directory which explains where each type of data is located, as well as the INFO.TXT files located in each data directory which describe the data in that directory. Although the INFO.TXT file is quite large it contains the most relevant information first. It begins by describing the type of data in the directory, the orbits covered, and the names of the most useful user files. Next the file naming conventions are described and the structure of the data files is given. More detailed information about each data file is then given. Novice users can ignore all directories and files except for those mentioned in this brief description. ============================================================================== Documents ============================================================================== This CD-ROM contains text which has been extracted from the original documentation. All copyright protections associated with this document are retained by the publishers, Space Science Reviews and The Journal of Geophysical Research. All occurrences of the documents on this CD-ROM contain their respective copyright permissions statement: 1991 Space Science Reviews, Reprinted, with permission, from Space Science Reviews, Vol. 55, 1991. or 1993 Journal Geophysical Research, Reprinted, with permission, from Journal Geophysical Research, Vol. 98 No. E5, 1993. This material is posted here with permission Space Science Reviews and The Journal of Geophysical Research. Such permissions of do not in any way imply endorsement of any of PDS's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from their respective sources. By choosing to view this document, you agree to all provisions of the copyright laws protecting it. Users of this CD-ROM and/or the Planetary Data System are required to comply with the copyright laws governing the usage of this material. ============================================================================== Volume Set Information ============================================================================== This CD-ROM is disk 2 of 2 in the PV07_000x series. This volume set contains 5 processed or derived datasets: 1) High resolution electron density, 2) UADS data (electron density, temperature, S/C potential), 3) Bow shock location, 4) Ionopause location, 5) Solar EUV daily averages. Spacecraft position or trajectory data can be found either on the PVO SEDR data volumes (PV04_xxxx), or on the OMAG/OEFD processed data (PV01_xxxx) volume series. Volume 1 of this volume set includes the remainder of these datasets containing orbits 1-2500 (1978-12-05 to 1985-10-09). ============================================================================== Errata ============================================================================== There is a file called ERRATA.TXT found at the root level of this volume which contains a list of changes and errors if there are any at the time this CD was published. This is a list of cumulative changes made to any PVO OETP CD-ROM (volume set PV07) created by this production date. Any changes or errors that were found to any PV07 CD-ROM after the production of this volume can be found via anonymous-ftp at pdsppi.igpp.ucla.edu (ftp 128.97.68.54). The account name is anonymous and the password should be your e-mail address (it's nice to leave an audit trail). Change to the PDS errata directory (cd pds/ERRATA/PV07), and transfer the file ERRATA.TXT (get ERRATA.TXT). ============================================================================== File Formats ============================================================================== All files on this disk are described by detached version 3.x PDS labels. Version 3.x standards require 78 character length lines, some text files go beyond this limit. This is the only known exception to the PDS version 3.x standard. PDS labels are identified by a ".LBL" file name extension. There is one label file for each text and data file contained on this disk and the file name prefix is the same as the file the label describes. The data directories contain multiple data files all with an identical structure. There is an ASCII text format file which describes the physical structure of the data files. This format file is then pointed to by all of the labels. Both the label files (.LBL) and the format files (*.FMT) are all located in the same directory as the data files they describe. ============================================================================== Disk Format ============================================================================== The disk is organized into a hierarchical directory structure which the PPI Node hopes will be both intuitive for the user as well as easy to use. The disk is formatted according to both ISO 9660 and POSIX (UNIX) standards in order to accommodate users on a wide variety of platforms. All of the label, table, and text files are ASCII with CR/LF (VAX / IBM-PC) format. ============================================================================== Volume Contents and Structure ============================================================================== This section describes the volume structure and naming conventions. Below is a tree diagram of the CD-ROM, followed by a description of the directory function and key files in each directory. Note: There is a file called ZZINPUT.PDS which is a necessary production file, but not for the user. Excuse any inconvenience that this file may cause. The basic organization of the disk is as follows: CD-ROM | +-CATALOG | +-BRACE | +-DATA +-DOCUMENT--+-INST | +-MILLER +-INDEX | +-MANAGE | +-SOFTWARE | | +-DATA------+ | +-BOWSHOCK | +-HIRES--+ | +-ORB2501 | +-ORB2601 | +-ORB2701 | +-ORB2801 | +-ORB2901 | +-ORB3001 | +-ORB3101 | +-ORB3201 | +-ORB3301 | +-ORB3401 | +-ORB3501 | +-ORB3601 | +-ORB3701 | +-ORB3801 | +-ORB3901 | +-ORB4001 | +-ORB4101 | +-ORB4201 | +-ORB4301 | +-ORB4401 | +-ORB4501 | +-ORB4601 | +-ORB4701 | +-ORB4801 | +-ORB4901 | +-ORB5001 | +-IONOPAUS | +-LORES | +-SOLAREUV The following is a brief summary of the contents of each directory: CATALOG Contains mission, spacecraft, dataset, software, parameter and coordinate system templates organized into one file called CATALOG.CAT. key files: CATALOG.CAT - Contains catalog templates CATINFO.TXT - Explains directory contents. DOCUMENT Contains 4 documents which are considered important to the understanding of these and other PVO charged particle experiment datasets. Each document is stored in its own directory and has been converted to an ASCII text file (with any graphics missing). In addition, one of the documents has been scanned electronically and stored as an HTML file (images are GIF), another document is given as a Microsoft Word (Macintosh version) document. key files: DOCINFO.TXT - Describes the contents of the DOCUMENT directory. DOCUMENT/BRACE contains the appendix extracted from Brace, L. H. and A. J. Kliore, "Structure of the Venus Ionosphere", Space Science Reviews, v55, p81-163, 1991. which describes some of the problems associated with the inter- calibration of the charged particle detectors aboard PVO. key files: INFO.TXT - Describes the contents of the DOCUMENT/BRACE directory. BRACE.ASC - ASCII text version of appendix A from reference above. DOCUMENT/DATA contains the complete dataset documentation provided by Dr. Larry Brace along with the PDS data submission. This document is provided in both Microsoft Word (Macintosh) form and in straight ASCII text. This document contains a long list of references to studies generated by this experiment. key files: INFO.TXT - Describes the contents of the DOCUMENT/DATA directory. DATA.ASC - ASCII text version of document. DATA.MSW - Microsoft Word version of the document. DOCUMENT/INST contains the original instrument description and initial results paper J.P. Krehbiel, L.H. Brace, R.F. Theis, J.R. Cutler, W.H. Pinkus, and R.B. Kaplan, "Pioneer Venus Orbiter Electron Temperature Probe", IEEE Trans. Geoscience and Remote Sensing, vol. GE-18, No 1, p49-54, 1980. as both an ASCII text file and an HTML (images are GIF files) representation of the paper. key files: INFO.TXT - Describes the contents of the DOCUMENT/INST directory. INST.ASC - ASCII text version of document. INST.HTM - HTML text version of document. FIGxx.GIF - GIF image file of figure XX. DOCUMENT/MILLER contains selected sections extracted from Miller, K. L., W. C. Knudsen, K. Spenner, "The Dayside Venus Ionosphere", Icarus, 1984. which describes some of the problems associated with the inter- calibration of the charged particle detectors aboard PVO. key files: INFO.TXT - Describes the contents of the DOCUMENT/MILLER directory. MILLER.ASC - ASCII text version of appendix A from reference above. FIGxx.GIF - GIF image file of page XX. INDEX Contains a cumulative index table (CUM_INDX.TAB) which describes the location of all files on the PV07 collection (PVO-OETP). In addition, there is a file (INDEX.TAB) which gives the name and location of all files on this volume. These index files have been provided for users who do not wish to make use of the DITDOS software. key files: CUM_INDX.TAB - Contains a cumulative index for the PV07 volume set (a collection of all INDEX.TABs - see below). CUM_INDX.LBL - Describes the columns and format of CUM_INDX.TAB. INDEX.FMT - Describes the structure for both the CUM_INDX.TAB file and the INDEX.TAB file. INDEX.TAB - Contains an index of this volume (PV07_0002) containing name of file, dataset association, file type and Volume ID. INDEX.LBL - Describes the columns and format of INDEX.TAB. INDXINFO.TXT - Describes the contents of this directory. MANAGE Contains data management information for the DITDOS software. Users do not need to make use of any of these files directly, however, the software which allows DITDOS to extract and reformat data files needs to have this information. key files: No User Files SOFTWARE Contains descriptions of available software and how to obtain soft- ware for various platforms. key files: COPYRIGH.TXT - Describes the legal rights and limitations of liability pertaining to software distributed by the PPI Node of PDS. FTP.TXT - Contains instructions on using anonymous to obtain software from the PDS/PPI Node SOFTINFO.TXT - Describes the available software and how to acquire software. DATA Contains all data in a branching tree structure of sub-directories. In the data file names, the string xxxx refers to the orbit number. key files: INFO.TXT - Describes the structure of the data area. DATASETS.TXT - ASCII text document describing all of the datasets. This is the same document found in the /DOCUMENT/DATA area as DATA.ASC INST.TXT - ASCII text document describing the instrument and initial scientific results from the OETP experiment. XCALIB_1.TXT - ASCII text document describing the intercalibration of PVO charged particle detectors. This is the same document found in the /DOCUMENT/BRACE directory as BRACE.ASC XCALIB_2.TXT - ASCII text document describing the intercalibration of PVO charged particle detectors. This is the same document fount in the /DOCUMENT/MILLER directory as MILLER.ASC DATA/BOWSHOCK Contains the bowshock crossing location data key files: BOWSHOCK.FMT - Format file that describes the ASCII data file. BOWSHOCK.LBL - PDS label describing the structure of the data file BOWSHOCK.TAB - ASCII data file DATASET.TXT - Bow Shock Crossing Dataset Description INFO.TXT - Describes the structure of the data area. DATA/HIRES Contains sub-directories containing the high resolution electron data. There is 1 file per orbit and there are 100 orbits per directory. Some orbits are missing due to lack of data. DATA/HIRES/ORB2501 contains data for orbits 2501-2600 DATA/HIRES/ORB2601 contains data for orbits 2601-2700 DATA/HIRES/ORB2701 contains data for orbits 2701-2800 DATA/HIRES/ORB2801 contains data for orbits 2801-2900 DATA/HIRES/ORB2901 contains data for orbits 2901-3000 DATA/HIRES/ORB3001 contains data for orbits 3001-3100 DATA/HIRES/ORB3101 contains data for orbits 3101-3200 DATA/HIRES/ORB3201 contains data for orbits 3201-3300 DATA/HIRES/ORB3301 contains data for orbits 3301-3400 DATA/HIRES/ORB3401 contains data for orbits 3401-3500 DATA/HIRES/ORB3501 contains data for orbits 3501-3600 DATA/HIRES/ORB3601 contains data for orbits 3601-3700 DATA/HIRES/ORB3701 contains data for orbits 3701-3800 DATA/HIRES/ORB3801 contains data for orbits 3801-3900 DATA/HIRES/ORB3901 contains data for orbits 3901-4000 DATA/HIRES/ORB4001 contains data for orbits 4001-4100 DATA/HIRES/ORB4101 contains data for orbits 4101-4200 DATA/HIRES/ORB4201 contains data for orbits 4201-4300 DATA/HIRES/ORB4301 contains data for orbits 4301-4400 DATA/HIRES/ORB4401 contains data for orbits 4401-4500 DATA/HIRES/ORB4501 contains data for orbits 4501-4600 DATA/HIRES/ORB4601 contains data for orbits 4601-4700 DATA/HIRES/ORB4701 contains data for orbits 4701-4800 DATA/HIRES/ORB4801 contains data for orbits 4801-4900 DATA/HIRES/ORB4901 contains data for orbits 4901-5000 DATA/HIRES/ORB5001 contains data for orbits 5001-5055 key files: INFO.TXT - Describes the directory contents DATASET.TXT - High Resolution Dataset Description OETPDATA.FMT - Format file that describes the ASCII data file ORBxxxx.TAB - ASCII data file ORBxxxx.LBL - PDS label describing the structure of the data file DATA/IONOPAUS Contains ionopause crossing location data key files: INFO.TXT - Describes the directory contents DATASET.TXT - Ionopause Dataset Description IONOPAUS.FMT - Format file that describes the ASCII data file IONOPAUS.TAB - ASCII data file IONOPAUS.LBL - PDS label describing the structure of the data file DATA/LORES Contains low resolution electron density, temperature and S/C potential data key files: INFO.TXT - Describes the directory contents DATASET.TXT - Low Resolution Dataset Description ELEDATA.FMT - Format file that describes the ASCII data file ORBxxxx.TAB - ASCII data file ORBxxxx.LBL - PDS label describing the structure of the data file DATA/SOLAREUV Contains Solar EUV daily averages data key files: INFO.TXT - Describes the directory contents DATASET.TXT - Solar EUV Dataset Description SOLAREUV.FMT - Format file that describes the ASCII data file SOLAREUV.TAB - ASCII data file SOLAREUV.LBL - PDS label describing the structure of the data file ============================================================================== Software ============================================================================== The Planetary Plasma Interactions (PPI) Node of NASA's Planetary Data System (PDS) provides software to facilitate the location of the data of interest on CD-ROM data products, as well as software to convert data between architecture specific data formats. In addition, the PPI Node provides software which has been made available by individual projects which may be useful when working with PPI data. Non-PDS software is provided "as is" and is distributed by the PPI Node as a service to the community. To obtain the most recent release of any PPI distributed software use anonymous FTP to connect the PPI FTP server located at "pdsppi.igpp.ucla.edu". (Complete instructions on using FTP can be found in the SOFTWARE directory in the file "FTP.TXT"). ============================================================================== Driver and Hardware Information ============================================================================== This disk has been formatted according to the ISO standard for CD-ROM production (9660) with level 1 compliance. Any system which complies with this standard (all of them should) should be able to access this disk. Recommended CD-ROM Drives and Driver Software Please note that the following list is not complete. However, these drives and driver software were tested and approved by the project. VAX/VMS Drive: Digital Equipment Corporation (DEC) RRD40, RRD42, or RRD50. Driver: DEC VFS CD-ROM driver V4.7 or V5.2 and up. Product VMS vn Released Commands VFS010 4.7 4/88 MOUNT/STRUCTURE=ISO_9660 VFS020 5.2 12/89 MOUNT/STRUCTURE=ISO_9660 VFS022 5.4 7/90 CDMOUNT/STRUCTURE=ISO_9660 F11CD055 5.5 6/92 CD_MOUNT, CD_DISMOUNT, CDROM (dump) ISO support will be bundled with VMS in version 6.0. Note: VMS drivers can be obtained at UCLASP::DISK$SCRATCH:[PDSUSER.SOFTWARE.VMS_DRIVERS] VAX/Ultrix Drive: DEC RRD40, RRD42, or RRD50. Driver: Supplied with Ultrix 3.1. Note: Use the "cdio" software package (in "~ftp/src/cdio.shar" from the "space.mit.edu" server). Contact Dr. Peter Ford for details. IBM PC Drive: Toshiba, Hitachi, Sony, or compatible. Driver: Microsoft MSCDEX version 2.2. Note: The newest version of MSCDEX (released in February 1990) is generally available. Apple Macintosh Drive: Apple CD SC (Sony) or Toshiba. Driver: Apple CD-ROM driver. Note: The Toshiba drive requires a separate driver, which may be obtained from Toshiba. Sun Micro Drive: Delta Microsystems SS-660 (Sony). Driver: Delta Microsystems driver or SUN CD-ROM Driver. Note: For questions concerning this driver, contact Denis Down at Delta Microsystems, 415-449-6881. ============================================================================== Point of Contact ============================================================================== If the user has problems reading this disk or can not make use of it on one or more of the platforms which should be supported, please contact the PPI pds_operator. This person can be reached in the following ways: SPAN/DEC-NET uclasp::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 90024-1567 ============================================================================== Cognizant Persons ============================================================================== The person most directly responsible for the construction and release of this CD-ROM is Mr. Steven Joy. He was the PPI Node Data Administrator at the time this disk was created and he understands as much about the disk structure and data organization as anyone. The construction of the PDS labels and templates was done by Ms. Eva Fried of the PPI Node and verified by Ms. Betty Sword of the Central Node at JPL. PPI Personnel JPL Personnel Ray Walker / Steve Joy Eva Fried / Todd King Betty Sword / Mike Martin 3845 Slichter Hall 4800 Oak Grove Dr. UCLA - IGPP Mail Stop 525-389 Los Angeles, CA 90024-1567 Pasadena, CA 91109