Data Set Information
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| DATA_SET_NAME |
APOLLO 15 ALSEP/SWS SOLAR WIND 1-HR AVG TABLES V1.0
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| DATA_SET_ID |
A15A-L-SWS-4-SOLAR-WIND-1HR-AVG-V1.0
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| NSSDC_DATA_SET_ID |
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| DATA_SET_TERSE_DESCRIPTION |
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| DATA_SET_DESCRIPTION |
Data Set Overview : This data set contains tables of time ordered, hourly averaged plasma parameters, mainly of the solar wind, as observed on the Moon at the Apollo 15 ALSEP site by the Apollo 15 Solar Wind Spectrometer (SWS) from 31 July 1971 through 30 June 1972, when the instrument failed. Data : The hourly averaged SWS data tables are in fixed-width ASCII format. There is one table for each year the SWS recorded data. During the local lunar night there was no solar wind signal so there are data gaps of about 15 days each lunation. Each table provides four sets of computed hourly parameters using as input data: (1) all fine-time scale parameters (FTSP), (2) all FTSP computed from spectra with small root-mean-square (RMS) error on curve fitting and thermal speeds less than one-half the bulk velocity, (3) all FTSP computed from spectra that satisfy the requirements of criterion 2 as well as having only one flow angle that can be directly measured, and (4) all FTSP computed from spectra that satisfy the requirements of criterion 2 as well as having both flow angles directly measurable. Contained in each of the four sets of averages are the proton density, alpha-to-proton ratio, bulk speed, angle of flow, number of spectra, and RMS deviations of each average. These data tables were converted from the CDF format which was created from the original binary data set PSFP-00084 by the NSSDC as part of the Lunar Data Restoration project. The original tapes were written in BCD format on a UNIVAC 1108 computer. See Clay, et al. (1972) [CLAYETAL1972], Goldstein, et al. (1973) [GOLDSTEINETAL1973] and Clay, et al. (1975) [CLAYETAL1975] for more information about the SWS plasma data from Apollo 15. This data set description was provided by the NSSDC.
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| DATA_SET_RELEASE_DATE |
2007-06-29T00:00:00.000Z
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| START_TIME |
1971-07-31T07:30:00.000Z
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| STOP_TIME |
1972-06-30T05:30:00.000Z
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| MISSION_NAME |
APOLLO 15
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| MISSION_START_DATE |
1971-07-26T12:00:00.000Z
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| MISSION_STOP_DATE |
1971-08-07T12:00:00.000Z
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| TARGET_NAME |
MOON
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| TARGET_TYPE |
SATELLITE
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| INSTRUMENT_HOST_ID |
A15A
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| INSTRUMENT_NAME |
SOLAR WIND SPECTROMETER
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| INSTRUMENT_ID |
SWS
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| INSTRUMENT_TYPE |
FARADAY CUP
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| NODE_NAME |
Geosciences
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| ARCHIVE_STATUS |
LOCALLY ARCHIVED
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| CONFIDENCE_LEVEL_NOTE |
Confidence Level Overview : These data tables are restorations of the original binary data recorded by the SWS experiment and were reviewed internally at the NSSDC for accuracy and completeness. Review : This data set was peer-reviewed in December 2007 and was accepted for the PDS archive pending the resolution of liens (completed in August 2008).
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| CITATION_DESCRIPTION |
Snyder, C.W., Neugebauer, M.M, D.R. Clay, D.R. Williams, H.K. Hill, and D. Han, APOLLO 15 ALSEP/SWS SOLAR WIND 1-HR AVG TABLES V1.0, A15A-L-SWS-4-SOLAR-WIND-1HR-AVG-V1.0, NASA Planetary Data System, 2007.
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| ABSTRACT_TEXT |
This data set contains tables of time ordered, hourly averaged plasma parameters, mainly of the solar wind, as observed on the Moon at the Apollo 15 ALSEP site by the Apollo 15 Solar Wind Spectrometer from 31 July 1971 through 30 June 1972.
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| PRODUCER_FULL_NAME |
CONWAY SNYDER
DOUGLAS CLAY
H. K. HILL
MARCIA NEUGEBAUER
DAVID WILLIAMS
D. HAN
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| SEARCH/ACCESS DATA |
Geosciences Web Services
Geosciences FTP Resource
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