Results 51 to 60 of about 7,016,395 (180)

Sudden commencement event of 17 April 2002: Aspects of the geomagnetic response at low latitudes [PDF]

open access: yes, 2005
An analysis of a sudden commencement (SC) manifestation reveals a significant contribution of the polar current system which influences the long-term behavior of the H component at low-latitude ground stations located in the subsolar sector. A transition
Zhang, T.L.   +11 more
core   +1 more source

Palaeosecular variations of the geomagnetic field in Africa during the Holocene: a review

open access: yes, 2020
The importance of the full understanding of the Holocene geomagnetic field spans from human history and archaeology, to palaeoclimatic changes and engineering, to geomagnetic field modelling and unravelling of the geomagnetic field characteristics and ...
Di Chiara, Anita
core   +1 more source

Oscillating magnetic field disrupts magnetic orientation in Zebra finches, Taeniopygia guttata [PDF]

open access: yes, 2009
Background Zebra finches can be trained to use the geomagnetic field as a directional cue for short distance orientation. The physical mechanisms underlying the primary processes of magnetoreception are, however, largely unknown.
Wiltschko, Wolfgang   +21 more
core   +1 more source

Ergodicity of the recent geomagnetic field [PDF]

open access: yes, 2011
The geomagnetic field is a fundamental property of our planet: its study would allow us to understand those processes of Earth’s interior, which act in its outer core and produce the main field. Knowledge of whether the field is ergodic, i.e.
E. Qamili   +5 more
core   +1 more source

Shannon information of the geomagnetic field for the past 7000 years [PDF]

open access: yesNonlinear Processes in Geophysics, 2010
The present behaviour of the geomagnetic field as expressed by the International Geomagnetic Reference Field (IGRF) deserves special attention when compared with that shown over the past few thousands of years by two paleomagnetic/archeomagnetic models ...
A. De Santis, E. Qamili
doaj  

Determination of a steady velocity field in a rotating frame of reference at the surface of the Earth's core [PDF]

open access: yes, 1996
We relax the steady-motions theorem by solving for a steady velocity field at the surface of the core in a frame of reference drifting at a linear rate with respect to an observer fixed in the mantle frame of reference.
Whaler, Kathy; id_orcid, Davis, R. G.
core   +1 more source

Twenty years of geomagnetic field observations at Mario Zucchelli Station (Antarctica)

open access: yesAnnals of Geophysics, 2009
During the 1986-87 austral summer a geomagnetic observatory was installed at Terra Nova Bay. During the first<br />years both geomagnetic field time variation monitoring and absolute measurements were carried out only during<br />summer ...
Lucia Santarelli   +3 more
doaj   +1 more source

Modeling of regional magnetic field applying spherical functions: practical aspect

open access: yesГеофизический журнал, 2019
Modeling of geomagnetic field and creation of geomagnetic maps is one of the main directions of geomagnetic studies. For constructing global model the global spherical Lejeandre functions are used in most cases, though for constructing regional magnetic ...
Yu. P. Sumaruk   +2 more
doaj   +1 more source

Geomagnetic field variations in the past: an introduction

open access: yes, 2020
In the last decades, palaeomagnetic research has provided us with a picture of the temporal and spatial behaviour of the Earth’s magnetic field (EMF) from its origin up to the present day.
Di Chiara, Anita   +2 more
core   +1 more source

Astudy and Analysis of Geomagnetic Field By using Model of International Geomagnetic Reference Field (IGRF- 2000)

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2017
The IGRF model is the empirical representation of the Earth magnetic field recommended for scientific use by the International Association of Geomagnetism and Aeronomy(IAGA).
H. A A I- Mahdi
doaj  

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