Results 11 to 20 of about 325,702 (157)

Geomagnetic Impulses and the Electrical Conductivity of the Lower Mantle [PDF]

open access: yes, 1991
This thesis is an investigation of the changes in the magnetic field as measured at the surface of the Earth on the time-scale of months to decades. In particular the phenomena of geomagnetic "impulses" or "jerks" are investigated.
Stewart, Douglas Norman
core   +7 more sources

Geomagnetic disturbances on ground associated with particle precipitation during SC [PDF]

open access: yes, 2010
We have examined several cases of magnetosphere compression by solar wind pressure pulses using a set of instruments located in the noon sector of auroral zone.
V. Safargaleev   +9 more
core   +6 more sources

Plasmaspheric dynamics resulting from the hallowe'en 2003 geomagnetic storms [PDF]

open access: yes, 2009
Cross-phase-derived plasma mass density trends during the Hallowe'en 2003 geomagnetic storms are presented for 38° magnetic latitude 63° (1.61 ≤ L ≤ 5.10), using data from the SAMNET (Subauroral Magnetometer Network), BGS (British Geological Survey), and
Zhang, T.L.   +5 more
core   +4 more sources

Response of polar mesosphere summer echoes to geomagnetic disturbances in the Southern and Northern Hemispheres: the importance of nitric oxide [PDF]

open access: yesAnnales Geophysicae, 2013
The relationship between polar mesosphere summer echoes (PMSE) and geomagnetic disturbances (represented by magnetic K indices) is examined. Calibrated PMSE reflectivities for the period May 2006–February 2012 are used from two 52.0/54.5 MHz radars ...
S. Kirkwood   +13 more
doaj   +1 more source

Thermospheric atomic oxygen density estimates using the EISCAT Svalbard Radar [PDF]

open access: yes, 2013
[1] Coupling between the ionized and neutral atmosphere through particle collisions allows an indirect study of the neutral atmosphere through measurements of ionospheric plasma parameters. We estimate the neutral density of the upper thermosphere above ~
Sutton, E.   +4 more
core   +5 more sources

Fusion of wildlife tracking and satellite geomagnetic data for the study of animal migration

open access: yesMovement Ecology, 2021
Background Migratory animals use information from the Earth’s magnetic field on their journeys. Geomagnetic navigation has been observed across many taxa, but how animals use geomagnetic information to find their way is still relatively unknown.
Fernando Benitez-Paez   +4 more
doaj   +1 more source

Relation of Extreme Ionospheric Events with Geomagnetic and Meteorological Activity

open access: yesAtmosphere, 2022
This paper studies extreme ionospheric events and their relations with geomagnetic and meteorological activity. With the long observation series at the Irkutsk (52° N, 104° E) and Kaliningrad (54° N, 20° E) ionosondes we obtained the datasets of ...
Konstantin G. Ratovsky   +3 more
doaj   +1 more source

April 2000 geomagnetic storm: Ionospheric drivers of large geomagnetically induced currents [PDF]

open access: yes, 2003
International audienceGeomagnetically induced currents (GIC) flowing in technological systems on the ground are a direct manifestation of space weather. Due to the proximity of very dynamic ionospheric current systems, GIC are of special interest at high
Thomson, A.   +7 more
core   +3 more sources

A Study of the Relationship Between Southward Bz > -10 nT and Storm Time Disturbance Index During Solar Cycle 23

open access: yesJournal of Nigerian Society of Physical Sciences, 2022
Magnetic reconnection can be used for studying the geoeffective processes in the coupled Sun–Solar wind – Magnetosphere dynamics leading to geomagnetic disturbance.
T. W. David   +9 more
doaj   +1 more source

Letter to the Editor: Geomagnetic storm effects at low latitudes [PDF]

open access: yesAnnales Geophysicae, 1999
The geomagnetic horizontal (H) field from the chain of nine observatories in India are used to study the storm-time and disturbance daily variations.
R. G. Rastogi, R. G. Rastogi
doaj   +1 more source

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