Interplanetary Monitoring Platform (IMP-8) Low-Energy Proton and Electron Differential Energy Analyzer (LEPEDEA) DataEntry ID: IMP8_IOWA
Abstract: IMP-8 (IMP-J) was launched by NASA on October 26, 1973 to measure the
magnetic fields, plasmas, and energetic charged particles (e.g.,
cosmic rays) of the Earth's magnetotail and magnetosheath and of the
near-Earth solar wind. IMP-8 continues to operate.
These experiments were designed to measure the energy spectra of
low-energy electrons and protons in the geocentric range of 30 to 40
earth ... radii to give further data on geomagnetic storms, aurora, tail
and neutral sheet, and other magnetospheric phenomena. The detectors
were a dual-channel, curved-plate electrostatic analyzer (LEPEDEA -
low energy proton and electron differential energy analyzer) with 16
energy intervals between 5 eV and 50 keV. They had an angular field of
view of 9 x 25 deg. The detectors could be operated in one of two
modes: (1) one providing good angular resolution (16 directions for
each particle energy band) once each 272 s, and (2) the other
providing good temporal resolution in which the entire energy range in
four directions was measured every 68 s.
The data set consists of distribution function and moments data taken
during many magnetotail passes of the IMP 8 spacecraft (at ~200,000
km). The data are at 3-min. resolution.
Other data consists of:
- Color Energy-Time Spectrograms, Digital Images in GIF Format
- Full Color Slides of E-T Spectrograms for Plasma Measurements
- 164 Second Resolution Electron and Proton Plasma Data, CDAW
- Electron and Proton Plasma Data, CDAW
- DigitalProton and Electron Distribution Functions
(Click for Interactive Map)
Data Set Citation
Dataset Originator/Creator: National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
Dataset Title: Atlantic Basin and North American Hurricane Database Re-analysis Project (DSI-9630)
Dataset Release Date: Unknown
Data Presentation Form: tabular digital dataOnline Resource: http://www.ncdc.noaa.gov http://www.aoml.noaa.gov/hrd/data_sub/re_a...
Start Date: 1998-12-06
Quality Samples are being analyzed in the laboratory.
Access Constraints Restricted access. Please contact data center for more information.
Use Constraints Restricted use. Please contact data center for more information.
Data Set Progress
Distribution Media: diskette
Distribution Size: 1.44 Mb
Distribution Format: MS Excel and Word formats
Phone: +(56-2) 232 2617
Email: dtorres at inach.cl
Instituto Antartico Chileno Av. Luis Thayer Ojeda 814 Casilla 16521, Correo 9 Providencia
Role: DIF AUTHOR
Email: pvicuna at inach.cl
Plaza Munoz Gamero 1055
City: Punta Arenas
Role: TECHNICAL CONTACT
Email: oblankh at entelchile.net
Roberto Padro 111 Nunoa
Vallejos, V., R. Hucke-Gaete, J. Acevedo, O. Blank y D. Torres. 1999. Informe
CientIfico, Eca XXXV (1998/99), Proyecto 018 'Estudios ecologicos sobre el lobo
fino antartico, Arctocephalus gazela'. Instituto Antartico Chileno, 73 pp. No
Creation and Review Dates
DIF Creation Date: 2004-11-02
Last DIF Revision Date: 2004-11-02