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... > Science Keywords > EARTH SCIENCE > SOLID EARTH > GEOMAGNETISM > GEOMAGNETIC INDICES > AM INDEX

Preferred term

AM INDEX  

Definition

  • A mean, 3-hourly "equivalent amplitude" of geomagnetic activity based on standardized K index data from a global network of 23 Northern and Southern Hemisphere stations by the Institut de Physique du Globe de Paris, France; am values are given in units of 1 nT. (en)

Broader concept

Change note

  • 2013-02-18 09:53:13.0 [tbs1979] Insert Concept add broader relation (AM INDEX [b3283844-d867-4c2f-9917-a72bc06fd9ef,82405] - GEOMAGNETIC INDICES [ae35f430-6534-49de-8b4c-edfc1e98870a,62733]);
  • 2013-03-11 14:58:11.0 [tbs1979] insert Definition (id: null text: A mean, 3-hourly "equivalent amplitude" of geomagnetic activity based on standardized K index data from a global network of 23 Northern and Southern Hemisphere stations by the Institut de Physique du Globe de Paris, France; am values are given in units of 1 nT. language code: en);

URI

https://gcmd.earthdata.nasa.gov/kms/concept/b3283844-d867-4c2f-9917-a72bc06fd9ef

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