Journal
RUSSIAN JOURNAL OF EARTH SCIENCES
Volume 17, Issue 2, Pages -Publisher
GEOPHYSICAL CENTER RAS
DOI: 10.2205/2017ES000597
Keywords
ULF waves; space weather; substorms; magnetic storms; earthquake precursors; geomagnetically induced currents; discrete mathematical analysis
Categories
Funding
- Russian Science Foundation [16-17-00121]
- NSF [1264146]
- SCOSTEP/VarSITI
- Directorate For Geosciences
- Div Atmospheric & Geospace Sciences [1264146] Funding Source: National Science Foundation
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A ULF wave index, characterizing the level of the geomagnetic field variability in the frequency range 2-7 mHz, has been suggested to the space physics and geophysical community. This global wave index is produced from all available arrays of magnetometers and isolated stations in the Northern hemisphere. A similar ULF wave index is calculated using magnetometer data from geostationary (GOES) and interplanetary (Wind, ACE) satellites. In this review we demonstrate that a wide range of space physics studies, such as the solar wind-ionosphere coupling, wave energy transport, substorm physics, relativistic electron energization, ring current formation, electrodynamics of the ionosphere and magnetosphere, search for electromagnetic precursors of earthquakes, etc., has benefited from the introduction of the provisional ULF wave index. Possible ways of the ULF index advancement and development are discussed. The permanently updating ULF-index database is freely available via the website ulf.gcras.ru for all interested researchers for further validation and statistical studies.
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