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USGS Geomagnetism Program: Definitive Disturbance Storm-Time (Dst) Data

Dates

Publication Date
Start Date
1958-01-01
End Date
2007-12-31

Citation

U.S. Geological Survey, 2009, USGS Geomagnetism Program: Definitive Disturbance Storm-Time (Dst) Data: U.S. Geological Survey, https://doi.org/10.5066/P9V6WO7G.

Summary

A revised version of the storm-time disturbance index Dst is calculated using hourly-mean magnetic-observatory data from four standard observatories and collected over the years 1958–2007. The calculation algorithm is a revision of that established by Sugiura et al., and which is now used by the Kyoto World Data Center for routine production of Dst. The most important new development is for the removal of solar-quiet variation. This is done through time and frequency-domain band-stop filtering – selectively removing specific Fourier terms approximating stationary periodic variation driven by the Earth’s rotation, the Moon’s orbit, the Earth’s orbit around the Sun, and their mutual coupling. The resulting non-stationary disturbance [...]

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Attached Files

Click on title to download individual files attached to this item.

GeoMagDst.xml
“Metadata”
Original FGDC Metadata

View
7.04 KB
DataDictionary_1_min.txt
“data dictionary”
136 Bytes
1-minute_USGS_Dst.txt
“data file”
934.58 MB
DataDictionary_1_hr..txt
“data dictionary”
613 Bytes
1-hour_USGS_Dst.txt
“data file”
52.25 MB

Purpose

This data set provides a measure of magnetic storm intensity.

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