Terms: Ultralow Frequency (962), ultralow frequencies (160), ULF waves (14,000), ultra-low frequency (62,900), ultra-low frequencies (1,900), ulf band (170), ulf bands (52), long period ULF (109), ULF wave (1,590), ULF spectrum (56),
Boolean: "solar wind" AND ULF (40,400), geomagnetic AND ulf (36,200), electromagnetic AND millihertz (310), electromagnetic AND microhertz (77), electromagnetic AND nanohertz (95),
Terms: milliHertz (2,300), microHertz (9,280), nanoHertz (430), picoHertz (183), femtoHertz (851), attoHertz (641), zeptoHertz (134), yoctoHertz (144), milliHz (151), microHz (258), nanoHz (356), picoHz (7), femtoHz (56), attoHz (52), zeptoHz (0), yoctoHz (0),
Terms: earth's magnetic field (1,050,000), geomagnetic field (499,000),
Boolean: geomagnetic AND diurnal (53,000), geomagnetic AND lunar (139,000), geomagnetic AND semidiurnal (665),
Terms: geomagnetic (1,490,000), geomagnetic flux (342), geomagnetic flux coordinates (38), geomagnetic storms (180,000), geomagnetic field (499,000), geomagnetic indices (20,000),
Terms: geomagnetic variations (2,400), geomagnetic variation (543), geomagnetic pulsations (1,640), geomagnetic activity (196,000), magnetic activity (168,000), magnetic pulsations (1,530), magnetic variation (275,000), magnetic variations (15,600),
Terms: geomagnetic data (60,900), geomagnetic information (648), geomagnetic information nodes (176), geomagnetic observatory (3,070), geomagnetic observatories (1,340), geomagnetic variation stations (4), geomagnetic data service (40), geomagnetic data (60,900), geomagnetic hourly (175), geomagnetic minute (13), real-time magnetogram (80),
Terms: magnetic observatory (66,400), magnetic observatories (4,220),
InterMagnet - Preliminary Data - CDROMS
Plot & data output of the Geomagnetic Field (1 min. values) - Geomagnetic Elements
Canadian Magnetic Observatories - Download Data
Terms: geomagnetism (339,000), geomagnetism program (1,130), microtesla (17,400), nanotesla (37,700), microteslas (714), nanoteslas (1,740), picotesla (802),
USGS National Geomagnetism Program
World Data Center for Geomagnetism Kyoto
Terms: magnetograms (147,000), magnetometer (995,000), proton precession magnetometer (1,350), magnetometer networks (179), magnetometer network (1,130), intermagnet (1,990),
Geomagnetic Activity: Due to the 7.2 degrees tilt of the solar rotation axis with respect to the normal of ecliptic, the Earth reaches the highest northern and southern heliographic latitude (where solar wind speed is higher by 50km/s on average) on September 6 and March 5, respectively, and crosses the equator twice a year between these dates.
Terms: geoelectric (38,000), geoelectricity (1,710), magnetotellurics (16,900), magnetotelluric (88,900), telluric currents (5,860), audio-magnetotelluric (669), audio-magnetotellurics (173), magnetotelluric signals (126),
Terms: magnetospheric (465,000), magnetospheric ulf (389),
Terms: sun-earth connection (147,000), solar wind coupling (308), solar-terrestrial (611,000),
Boolean: geomagnetic AND lunar (139,000), geomagnetic AND solar (941,000), geomagnetic AND solar AND acceleration (113,000),
Ultralow-frequency magnetohydrodynamics in boundary-constrained geomagnetic flux coordinates
Terms: ULF power (210),
Terms: solar wind (3,570,000),
Terms: mean field coordinates (12), mean field coordinate (4),