Data Description

This page summarizes information about the selected resource and its origin based on SPASE metadata.

Table of Contents

  1. Product
  2. Repository
  3. Instrument
  4. Observatory
  5. Persons

SPASE version 2.2.1

Numerical Data Product: Wind EPACT/LEMT 1-Hr Spin-Sectored H,He,O,Fe Counts for Events

Resource ID
spase://VEPO/NumericalData/Wind/EPACT/LEMT/Events/SEC/PT1H Get XML
Name
Wind EPACT/LEMT 1-Hr Spin-Sectored H,He,O,Fe Counts for Events
Description

This data set contains hourly counts of H, He, O and Fe nuclei in 16 look directions about the spacecraft spin axis. Counts for each of the four species are given at 2.5-5 MeV/n, and an additional count is given for 5-8 MeV/n He. As of 10/2011, the data cover 39 1997-2006 multi-day intervals that include energetic solar particle events. ASCII data words are comma-separated. For a given particle event, there are species-specific files. File naming uses the convention XX_sec_YYYYMMDD, where XX = H, He2 (2.5-5 MeV/n), He5 (5-8 MeV/n), O or Fe, and where YYYYMMDD is the day of the first record of the file. Sectoring is defined with respect to the ecliptic plane projection of the concurrently measured magnetic field vector. The edge of sector #1 is coincided with the projection of B on the ecliptic plane, so phi value of the center of sector i is phiB+11.25+(i-1)*22.5 deg, where phiB is the longitudinal angle of B.

Additional information
Readme file
Acknowledgement

Dr. Tycho T. Von Rosenvinge

Contact
Role Person
1. Principal investigator Dr. Tycho T. Von Rosenvinge Get XML
2. CoInvestigator Dr. Donald V. Reames Get XML
3. Data producer Lun C. Tan Get XML
Release date
2011-12-12 00:00:00
Repository
Name
Wind Spacecraft Home Page and Data Repository Get XML
Availability
Online
Access rights
Open
URL
Wind repository

File-level access to event-specific, species-specific ASCII files

Format
Text
Acknowledgement

Please acknowledge Principal Investigator T. von Rosenvinge and the Wind EPACT team.

Processing level
Uncalibrated
Instrument
Energetic Particle Acceleration, Composition and Transport (EPACT) Get XML
Measurement type
Energetic particles
Temporal description
Start date
1997-11-03 00:00:00
Stop date
2006-12-17 00:00:00
Cadence
1 hour
Observed regions
Heliosphere.NearEarth

Parameters

Parameter #1

Name
Time
Parameter key
Column_1-Column_5
Description

Universal time at start of hour average

Cadence
1 hour
Structure
Size
5
Description

Year, month, day, hour at start of average, and fractional day of year at midpoint of average

Parameter type
Temporal

Parameter #2

Name
Species-specific counts
Parameter key
Column_6-Column_17
Description

Counts in 16 look directions, for species identified in the file name (H,He2,He5,O, or Fe)

Cadence
1 hour
Structure
Size
16
Description

This is a 16 element array containing counts in each of 16 look directions.

Particle type
Proton
AlphaParticle
Ion
Quantity
Counts
AtomicNumber
1
2
8
26
Energy range
Low energy
2.5
High energy
5
Units
MeV/n

SPASE version 2.0.0

Instrument: Energetic Particle Acceleration, Composition and Transport (EPACT)

Instrument ID
spase://SMWG/Instrument/Wind/EPACT Get XML
Name
Energetic Particle Acceleration, Composition and Transport (EPACT)
Description

The EPACT (energetic particle acceleration-composition-transport) experiment is designed to provide a comprehensive study of energetic particle acceleration and transport processes in solar flares, in the interplanetary medium and in planetary magnetospheres as well as in galactic cosmic rays and the anomalous cosmic ray component. The instrument provides a complete description of electrons and atomic nuclei of different charge and isotopic composition over an energy range from 0.1 to 500 MeV/nucleon, and extending up to Z=92 (uranium). The instrument is divided into three semi-autonomous subsystems, the low energy angular distribution telescopes (LEAD), the low energy matrix telescopes (LEMT), and the electron/isotope telescope (ELITE). There are four individual LEAD sensors, two which view the hemisphere above the spin plane, and two pointed below the spin plane. There are also three LEMT sensors which are oriented above, below, and into the spin plane, and a single ELITE sensor which is double ended.

Additional information
NSSDC's Master Catalog

Information about the Energetic Particle Acceleration, Composition and Transport (EPACT) experiment on the Wind mission.

Contact
Role Person
1. Principal investigator Dr. Tycho T. Von Rosenvinge Get XML
Release date
2011-08-17 21:10:14
Instrument type
Energetic Particle Instrument
Investigation name
Energetic Particle Acceleration, Composition and Transport (EPACT) on Wind
Observatory
Wind Get XML

SPASE version 2.2.0

Observatory: Wind

Observatory ID
spase://SMWG/Observatory/Wind Get XML
Name
Wind
Alternate name
ISTP/Wind
GGS/Wind
Wind/ISTP
Wind/GGS
Description

The Wind spacecraft was launched on November 1, 1994 and is the first of two NASA spacecraft in the Global Geospace Science initiative and part of the ISTP Project. The science objectives of the Wind mission are: (1) Provide complete plasma, energetic particle, and magnetic field input for magnetospheric and ionospheric studies; (2) Determine the magnetospheric output to interplanetary space in the up-stream region; (3) Investigate basic plasma processes occurring in the near-Earth solar wind; and (4) Provide baseline ecliptic plane observations to be used in heliospheric latitudes from ULYSSES. Wind has on-board propulsion and its design lifetime is three to five years, with redundant subsystems. Wind is cylindrical, approximately 2.8 m in diameter by 1.25 m high, with body-mounted solar cells. It has long wire spin-plane antennas, inertial booms, and spin-plane appendages to support sensors. Wind has experiment booms deployed along both Z axes. The spin rate is 20 rpm around an axis within 1 degree of normal to the ecliptic. Data are stored using on-board tape recorders and are relayed to the Deep Space Network at one of two rates: 5.5 or 11.1 kbps. For the first nine months of operation, Wind was placed in a double-lunar swingby orbit near the ecliptic plane, with apogee from 80 to 250 Earth radii and perigee of between 5 and 10 Earth radii. In this orbit, lunar gravity assists were used to keep its apogee over the day hemisphere of the Earth, and magnetospheric observations are made. Wind was then inserted into a small "halo" orbit, about the sunward Sun-Earth gravitational equilibrium point (L1), varying from 235 to 265 Earth radii. In this orbit Wind measures the incoming solar wind, magnetic fields and particles continuously and provides an approximately one-hour warning to the other ISTP spacecraft of changes in the solar wind. In 2001 and 2002 Wind has executed a distant prograde orbit that took it +/- 300 Re leading and legging Earth. This orbit provided a wide baseline to study solar wind structures and correlations. In 2003, Wind reached the L2 Lagrange point 240 Re anti-sunward from Earth providing a 500 Re spatial separation from ACE solar wind observations along with measurements of the distant Earth magnetotail. Since 2004, Wind has been permanently parked in a L1 halo orbit where it continues to provide high-quality solar wind measurements.

Additional information
Wind Spacecraft Home Page
NSSDC's Master Catalog

Information about the Wind mission

Contact
Role Person
1. Project scientist Dr. Adam Szabo Get XML
Release date
2011-08-17 18:19:11
Prior ID
spase://vspo/observatory/84
Location
Region
Earth.Magnetosheath
Earth.Magnetosphere
Earth.Magnetosphere.Magnetotail
Earth.Magnetosphere.Main
Heliosphere.Inner
Heliosphere.NearEarth

SPASE version 2.2.0

Person: Dr. Tycho T. Von Rosenvinge

Name
Dr. Tycho T. Von Rosenvinge
Organization
GSFC-Code 661
Person ID
spase://SMWG/Person/Tycho.T.Von.Rosenvinge Get XML

SPASE version 2.2.0

Person: Dr. Donald V. Reames

Name
Dr. Donald V. Reames
Organization
GSFC-Code 661
Person ID
spase://SMWG/Person/Donald.V.Reames Get XML

SPASE version 2.2.1

Person: Lun C. Tan

Name
Lun C. Tan
Organization
U. Maryland (at GSFC)
Email
lun.c.tan@nasa.gov
Person ID
spase://SMWG/Person/Lun.C.Tan Get XML

SPASE version 2.2.0

Person: Dr. Adam Szabo

Name
Dr. Adam Szabo
Organization
NASA Goddard Space Flight Center
Address
Code 672, Greenbelt, MD 20771, USA
Email
adam.szabo@nasa.gov
Phone
+1 301 286 5726
Person ID
spase://SMWG/Person/Adam.Szabo Get XML
Release date
2010-08-05 17:35:45

SPASE version 1.2.0

Repository: Wind Spacecraft Home Page and Data Repository

Repository ID
spase://SMWG/Repository/NASA/GSFC/Wind Get XML
Name
Wind Spacecraft Home Page and Data Repository
Description

Data Repository for Wind data files as well as instrument descriptions and related links for the Wind mission.

Additional information
Wind Spacecraft Home Page

Wind home page with description of instruments and access to data files.

Contact
Role Person
1. Data producer

Scientist
Dr. Adam Szabo Get XML
Release date
2011-08-18 15:54:53
Prior IDs
spase://VHO/Repository/WIND/MFI
spase://SMWG/Repository/NASA/GSFC/WIND_MFI
spase://SMWG/Repository/NASA/GSFC/WIND
Access URL