Results 21 to 30 of about 6,743 (215)

The effects of aliasing and lock-in processes on palaeosecular variation records from sediments [PDF]

open access: yes, 2000
Studies of sedimentary records of palaeointensity variation report periods as long as 50 kyr. Archaeointensity data show geomagnetic periods of 2 kyr with large ampli-tudes.
Gubbins, D., Teanby, N.
core   +1 more source

Studying diurnal and secular variations of the Earth's magnetic field using data from Yangibazar magnetic observatory (Uzbekistan)

open access: yesRussian Journal of Earth Sciences, 2022
The article provides information about the Yangibazar geomagnetic observatory, managed by the Institute of Seismology of the Academy of Sciences of the Republic of Uzbekistan.
Yusupov Valizhon   +2 more
doaj   +1 more source

Long-Term Seafloor Electromagnetic Observation in the Northwest Pacific May Detect the Vector Geomagnetic Secular Variation

open access: yesData Science Journal, 2010
Sea Floor ElectroMagnetic Stations (SFEMSs) are now operating at two deep seafloor sites called the 'WPB' and the 'NWP' in the West Philippine Basin and the Northwest Pacific Basin, respectively.
H Toh, Y Hamano, T Goto, H Utada
doaj   +1 more source

Evidence for a geomagnetic jerk in 1990 across Europe

open access: yesAnnals of Geophysics, 1995
The analysis of geomagnetic data from magnetic observatories demonstrated the existence of very rapid changes, or jerks, in the secular variation, especially the occurrence of the well known geomagnetic jerks of 1969 and 1978.
A. Meloni, L. Cafarella
doaj   +1 more source

After some 350 years – zero declination again in Paris [PDF]

open access: yesHistory of Geo- and Space Sciences, 2016
The main part of the geomagnetic field – produced by a dynamo process in the Earth's outer core – changes its direction and strength in time, over timescales from months to centuries, even millennia.
M. Mandea, J.-L. Le Mouël
doaj   +1 more source

Four decades of European geomagnetic secular variation and acceleration

open access: yesAnnals of Geophysics, 2009
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Monika Korte   +2 more
doaj   +1 more source

Dependence of the velocity changes of secular variations on the position of observatory and time

open access: yesГеофизический журнал, 2021
According to the data of world observatories net secular variations of geomagnetic fields from internal and outer sources have been studied. Averaged 3-year data have been used for this purpose.
T. P. Sumaruk, P. V. Sumaruk
doaj   +1 more source

Plio-Pleistocene time-averaged field in southern Patagonia recorded in lava flows [PDF]

open access: yes, 2004
Paleomagnetic directions were obtained from stepwise alternating-field or thermal demagnetization of 53 lava flows from southern Patagonia (latitudes 49.5°-52.1 °S) that include the Pali-Aike volcanic field and the Meseta Viscachas plateau lavas.
Mejia, V.   +4 more
core   +1 more source

Anomalous changes of vertical geomagnetic field in Kamchatka

open access: yesE3S Web of Conferences, 2016
Secular variations of the vertical geomagnetic field at Paratunka (Kamchatka), Kakioka (Honshu), Mamambetsu (Hokkaido) and Patrony (Irkutsk) are considered from 1968 to 2014.
Moroz Yuriy   +2 more
doaj   +1 more source

Temporal Variations of Strength and Location of the South Atlantic Anomaly as Measured by RXTE [PDF]

open access: yes, 2009
The evolution of the particle background at an altitude of ~540 km during the time interval between 1996 and 2007 is studied using the particle monitor of the High Energy X-ray Timing Experiment on board NASA's Rossi X-ray Timing Explorer.
Fürst, Felix   +5 more
core   +3 more sources

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