This website uses cookies. By continuing to use this website you are agreeing to our use of cookies. 

Dataset Collection

 

Cluster/Ground-Based Data Centre - Auroral Oval Indicators

Status: Not defined
Publication State: published

Abstract

This dataset collection contains plots of three new Auroral Activity Indicators. These indicators are calculated similarly to the existing AL index, however, they are specific to three separate latitudes: the contracted oval (75 magnetic latitude), the standard oval (65 magnetic latitude) and the expanded oval (55 magnetic latitude).

Recordings of three new auroral activity indicators. These indicators are calculated in a manner similar to the existing AL index*: specifically, an indicator is derived by superimposing the horizontal component of the magnetometer traces from the participating stations, and taking the lower envelope. Thus a lower bound for the horizontal component is determined.
Unlike the AL index, however, these indices are specific to latitude. Data is taken from contributing stations on three latitudes, thus creating three auroral activity indicators:
- Contracted oval (~75 Magnetic Latitude)
- Standard oval (~65 magnetic latitude)
- Expanded oval (~55 magnetic latitude)

* The Auroral Electrojet (AE) index is the difference between the lower and upper envelopes of the horizontal component of the Earth's magnetic field, taken from a number of stations and superimposed. The lower envelope is called the AL index, and the upper the AU index.

Citable as:UK Solar System Data Centre (1995): Cluster/Ground-Based Data Centre - Auroral Oval Indicators. UK Solar System Data Centre, date of citation. http://catalogue.ceda.ac.uk/uuid/9c91a482379d4e45d44fb77b43a4365d
Abbreviation: ao_Indicators
Keywords: Auroral, Oval, Indicators

Details

Previous Info:
No news update for this record
Previously used record identifiers:
http://badc.nerc.ac.uk/view/ukssdc.ac.uk__ATOM__DE_a1a94202-22fd-11e0-96eb-00e081470265
Coverage
Temporal Range
Start time:
-
End time:
-
Geographic Extent

 
90.0000°
 
-180.0000°
 
180.0000°
 
-90.0000°