Sentences with phrase «magnetic field variations»
As seen in Figure 6, particularly the higher - frequency variations in the two radionuclide estimates agree rather well in phase and show higher amplitudes than the geomagnetic reconstructions, confirming the results by Snowball et al. (2007) that variations in radionuclide production rates on up to multi-centennial time scales are dominated by solar magnetic field variations.
https://www.swsc-journal.org/ Not exact matches
The variation of the field strength is only a few percent of the applied magnetic field strength for now, but this is a significant first step to overcome the problem of detaching the plasma from the MN in the plasma thruster.
A copper coil surrounding the sample detected changes to the superconductor's magnetic properties and allowed the team to sensitively measure tiny variations in how deep the magnetic field reached inside the superconductor.
«These thermal variations also have profound implications for the geodynamo in the core, which creates Earth's magnetic field.»
The head coil controls variations in the scanner's magnetic field and the capsule has to do with scan orientation, in the same way that surgeons will write on your right leg so they don't mistakenly operate on your left.
Understanding the two phenomena, which are both produced by interactions between charged particles and the planet's magnetic field, may help to explain the variations in the timing of the radio pulses and to shed light on Saturn's geomagnetic workings.
«Measuring small variations in the magnetic field of the soil enables you to identify old pits or embankments without destroying them.
Over time they build a more detailed magnetic map by learning to recognise variations in the strength and direction of the field lines, which are angled more steeply towards the poles and flatter at the magnetic equator.
About three years ago they and another research team working independently at Princeton found a serious flaw in what has been the most widely accepted theory of galactic magnetic fields — a theory that with slight variations has also been used to explain the magnetic fields of individual stars such as the sun.
On the basis of these observations we conclude that class I excursions, epitomized by the Laschamp Excursion, are more closely related to normal secular variation and are not necessarily a prelude to magnetic field reversal.»
The total energy in these particles is insignificant compared to the energy in the form of light from the sun, so the variation of the magnetic field will not have a direct effect on Earth climate.
The records document that the Laschamp Excursion was characterized locally by (1) declination changes of ± 120 °, (2) inclination changes of more than 140 °, (3) ~ 1200 - year oscillations in both inclination and declination, (4) near 90 ° out - of - phase relationships between inclinations and declinations that produced two clockwise loops in directions and virtual geomagnetic poles (VGPs) followed by a counterclockwise loop, (5) excursional VGPs during both intervals of clockwise looping, (6) magnetic field intensities less than 10 % of normal that persisted for almost 2000 years, (7) marked similarity in excursional directions over ~ 5000 km spatial scale length, and (8) secular variation rates comparable to historic field behavior but persisting in sign for hundreds of years.
Upon measuring the variations in how deep the magnetic field penetrated inside the superconductor, the researchers discovered a strange magnetic intrusion.
In addition to variations in chemical composition — both because of the initial abundances and the star's evolutionary status, [34] interaction with a close companion, [35] rapid rotation, [36] or a magnetic field can also change a main sequence star's position slightly on the HR diagram, to name just a few factors.
This is a larger solar influence (variation depends on solar magnetic field) than the variation in solar output intensity.
Improved understanding of secular variation of Earth's magnetic field, and core structure and dynamics, including quantification of rapid field decrease that may signal a reversal of the Earth's field.
STAFF is capable of detecting rapid variations in magnetic fields, which means that very small spatial structures can be recognised within the plasma.
Drawn from the holdings of the Dakis Joannou Collection and installed in the beautiful spaces of Geneva's Museum of Art and History, False Friends proposes unexpected connections between artworks and aesthetics, methods and materials, offering a reading of contemporary art as a magnetic field of elective affinities and striking variations — a cacophonic concerto of forms.
How these cyclical climate take place is still unknown, but they «are most likely caused by variations in the solar wind and associated magnetic fields that affect the flux of cosmic rays incident on cloudiness, and thereby control the amount of sunlight reaching the earth's surface and thus the climate.»
The results of analysis of thermobaric field variations for the periods of invasion of abnormally powerful solar cosmic ray fluxes and magnetic storms confirm the reality of manifestation of heliogeophysical disturbances.
Svensmark (1998) later proposed that changes in the inter-planetary magnetic fields (IMF) resulting from variations on the sun can affect the climate through galactic cosmic rays (GCR) by modulating earth's cloud cover.
Large changes in cosmic rays are documented in response to magnetic - field variations (the Laschamp event of about 40,000 years ago is especially prominent) with no corresponding change in climate, so any cosmic - ray influence on the climate must be very small (a weak correlation can be obscured by noise; a strong control is almost always visible «by eye,» and clearly is absent).
«Just how large this role is, must still be investigated, since, according to our latest knowledge on the variations of the solar magnetic field, the significant increase in the Earthâ??
It is the variation in the solar magnetic field which causes the variation in temperature.
«Just how large this role is, must still be investigated, since, according to our latest knowledge on the variations of the solar magnetic field, the significant increase in the Earth's temperature since 1980 is indeed to be ascribed to the greenhouse effect caused by carbon dioxide,»
At decadal and longer time scales, the main source of rotational variation is the interaction between the mantle and core, as substantiated by the significant correlation between the low - degree zonal components of the magnetic field and the LOD (Jault and Le Mouel 1991; Hide et al. 2000).
Can you point to a calculation of the forces caused by the variations in magnetic fields that you discuss?
These estimates of the entropy are shown in Figure 6, and it is clear that the entropy determined from physical parameters such as the F10.7 flux and solar magnetic field shows variations similar to those in the entropy obtained from the sunspot number.
(c) Variation of the mean solar magnetic field for SCs 21 — 23.
This is a larger solar influence (variation depends on solar magnetic field) than the variation in solar output intensity.
But recent research from scientists like Danish physicist Henrik Svensmark demonstrates that variations in the sun's output also affect the solar magnetic field and solar wind — which directly influence ionization in the troposphere and cloud formation.
Would we expect there to be significant differnces in measured interference levels based on variations in the earth's magnetic field, and, the ionosphere?
I agree that the earth's magnetic field varies on the millenial scale and thus is not an immediate cause of triggering trade wind variations.
(The most intriguing alternative theory, from Danish physicist Henrik Svensmark, is that variations in the strength of the sun's magnetic field affect how many cosmic rays penetrate the atmosphere, which in turn affects cloud - formation, which affects how much of the sun's heat is reflected back into space.)
Climate science's foundational problem is in ignoring evidence, including climate persistence, ocean / atmospheric oscillations, solar variations, galactic cosmic rays, magnetic fields, planetary variations and nonlinear chaotic factors.
vukcevic wrote: «Correlation between variation in the Earth's magnetic field and the Arctic anomaly is very convincing, but physical relationship as yet unknown.
They are most likely caused by variations in the solar wind and associated magnetic fields that affect the flux of cosmic rays incident on the earth's atmosphere.
We find that most of the solar cycle variation in the total solar irradiance can be accounted for by the absolute magnetic field strength on the solar disk, if fields associated with dark and bright regions are considered separately.
An alternative recorder for past geomagnetic field changes are cosmogenic radionuclide production rates, which are modulated by variations of both the solar magnetic field strength and the geomagnetic field intensity.
There is no direct correlation or coincidence over observed time to indicate that it is «most likely caused by variations in the solar wind and associated magnetic fields that affect the flux of cosmic rays incident on the earth's atmosphere»
For the Holocene (the past approx 11,500 years), it has been shown that fluctuations in atmospheric radiocarbon concentrations have been caused mostly by variations in the solar magnetic field 1, 2, 3 http://www.nature.com/nature/journal/v403/n6772/full/403877a0.html ================
All of these features, with the exception of anomalously large directional amplitude, are consistent with normal magnetic field secular variation.
The records document that the Laschamp Excursion was characterized locally by (1) declination changes of ± 120 °, (2) inclination changes of more than 140 °, (3) ~ 1200 - year oscillations in both inclination and declination, (4) near 90 ° out - of - phase relationships between inclinations and declinations that produced two clockwise loops in directions and virtual geomagnetic poles (VGPs) followed by a counterclockwise loop, (5) excursional VGPs during both intervals of clockwise looping, (6) magnetic field intensities less than 10 % of normal that persisted for almost 2000 years, (7) marked similarity in excursional directions over ~ 5000 km spatial scale length, and (8) secular variation rates comparable to historic field behavior but persisting in sign for hundreds of years.
On the basis of these observations we conclude that class I excursions, epitomized by the Laschamp Excursion, are more closely related to normal secular variation and are not necessarily a prelude to magnetic field reversal.»