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STEREO-A PLASTIC Small Transients List

ResourceID
spase://NASA/NumericalData/STEREO-A/PLASTIC/SmallTransientsList

Description

Small Transients (ST) are identified by the following criteria: 1. The STs have durations between 0.5 and 12 hours. 2. Magnetic field strength is higher than the yearly average (> 1.3 times yearly average). 3. Low proton beta (less than 0.7 times yearly average) or low proton temperature (Tp/Texp < 0.7). 4. Low Alfvén Mach Number (less than 0.7 yearly average), or large rotations of magnetic field components (we used the minimum variance analysis on the magnetic field, Sonnerup and Cahill Jr. [1967], Sonnerup and Scheible [1998]; and we require that the intermediate-to-minimum eigenvalue ratio be > 5). 5. Checking the Aflvénic fluctuations. We remove all three correlations (Rx, Ry, Rz) greater than 0.5, or two greater than 0.6 and the other greater than 0.3 from our list, which is similar to the criterion in Cartwright and Moldwin [2008].

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Details

Version:2.2.8

NumericalData

ResourceID
spase://NASA/NumericalData/STEREO-A/PLASTIC/SmallTransientsList
ResourceHeader
ResourceName
STEREO-A PLASTIC Small Transients List
ReleaseDate
2020-07-07 21:15:21Z
Description

Small Transients (ST) are identified by the following criteria: 1. The STs have durations between 0.5 and 12 hours. 2. Magnetic field strength is higher than the yearly average (> 1.3 times yearly average). 3. Low proton beta (less than 0.7 times yearly average) or low proton temperature (Tp/Texp < 0.7). 4. Low Alfvén Mach Number (less than 0.7 yearly average), or large rotations of magnetic field components (we used the minimum variance analysis on the magnetic field, Sonnerup and Cahill Jr. [1967], Sonnerup and Scheible [1998]; and we require that the intermediate-to-minimum eigenvalue ratio be > 5). 5. Checking the Aflvénic fluctuations. We remove all three correlations (Rx, Ry, Rz) greater than 0.5, or two greater than 0.6 and the other greater than 0.3 from our list, which is similar to the criterion in Cartwright and Moldwin [2008].

Acknowledgement
Please acknowledge STEREO PLASTIC Investigation (A.B. Galvin, PI) and NASA grant NNX15AU01G.
Contacts
RolePersonStartDateStopDateNote
1.PrincipalInvestigatorspase://SMWG/Person/Antoinette.B.Galvin
InformationURL
InformationURL
PriorIDs
spase://VSPO/NumericalData/STEREO-A/PLASTIC/SmallTransientsList
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
STEREO Science Center - ASCII
URL
Description

In ASCII via http from SSC

Format
Text
DataExtent
Quantity
1
Units
KB
ProcessingLevel
Calibrated
InstrumentIDs
MeasurementType
ThermalPlasma
TemporalDescription
TimeSpan
StartDate
2007-01-19 00:00:00
RelativeStopDate
-P1Y
Note
As of March 24, 2017, last data were for August 11, 2014.
ObservedRegion
Heliosphere.Remote1AU