Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Helioseismology> ?p ?o }
- Helioseismology abstract "Helioseismology is the study of the propagation of wave oscillations, particularly acoustic pressure waves, in the Sun. Unlike seismic waves on Earth, solar waves have practically no shear component (s-waves). Solar pressure waves are believed to be generated by the turbulence in the convection zone near the surface of the sun. Certain frequencies are amplified by constructive interference. In other words, the turbulence "rings" the sun like a bell. The acoustic waves are transmitted to the outer photosphere of the sun, which is where the light generated through absorption of radiant energy from nuclear fusion at the centre of the sun, leaves the surface. These oscillations are detectable on almost any time series of solar images, but are best observed by measuring the Doppler shift of photospheric absorption lines. Changes in the propagation of oscillation waves through the Sun reveal inner structures and allow astrophysicists to develop extremely detailed profiles of the interior conditions of the Sun.Helioseismology was able to rule out the possibility that the solar neutrino problem was due to incorrect models of the interior of the Sun. Features revealed by helioseismology include that the outer convective zone and the inner radiative zone rotate at different speeds, which is thought to generate the main magnetic field of the Sun by a dynamo effect, and that the convective zone has "jet streams" of plasma (more precisely, torsional oscillations) thousands of kilometers below the surface. These jet streams form broad fronts at the equator, breaking into smaller cyclonic storms at high latitudes. Torsional oscillations are the time variation in solar differential rotation. They are alternating bands of faster and slower rotation. So far there is no generally accepted theoretical explanation for them, even though a close relation to the solar cycle is evident, as they have a period of eleven years, as was known since they were first observed in 1980.Helioseismology can also be used to image the far side of the Sun from the Earth, including sunspots. In simple terms, sunspots absorb helioseismic waves. This sunspot absorption causes a seismic deficit that can be imaged at the antipode of the sunspot. To facilitate spaceweather forecasting, seismic images of the central portion of the solar far side have been produced nearly continuously since late 2000 by analysing data from the SOHO spacecraft, and since 2001 the entire far side has been imaged with this data.Despite the name, helioseismology is the study of solar waves and not solar seismic activity. The name is derived from the similar practice of studying terrestrial seismic waves to determine the composition of the Earth's interior. The science can be compared to asteroseismology, which studies the propagation of sound waves in stars.".
- Helioseismology thumbnail Helioseismology_pmode1.png?width=300.
- Helioseismology wikiPageExternalLink english.
- Helioseismology wikiPageExternalLink bison.ph.bham.ac.uk.
- Helioseismology wikiPageExternalLink gong.nso.edu.
- Helioseismology wikiPageExternalLink solar.
- Helioseismology wikiPageExternalLink soi.stanford.edu.
- Helioseismology wikiPageExternalLink full_farside.
- Helioseismology wikiPageExternalLink solarphysics.livingreviews.org.
- Helioseismology wikiPageExternalLink lrsp-2005-6.
- Helioseismology wikiPageExternalLink open?pubNo=lrsp-2005-1.
- Helioseismology wikiPageExternalLink trace.
- Helioseismology wikiPageExternalLink www.helas-eu.org.
- Helioseismology wikiPageExternalLink virgo.
- Helioseismology wikiPageExternalLink lrsp-2005-6.
- Helioseismology wikiPageExternalLink news_summ.jsp?cntn_id=105844&org=olpa&from=news.
- Helioseismology wikiPageID "408801".
- Helioseismology wikiPageLength "28968".
- Helioseismology wikiPageOutDegree "76".
- Helioseismology wikiPageRevisionID "662324262".
- Helioseismology wikiPageWikiLink 160-minute_solar_cycle.
- Helioseismology wikiPageWikiLink Accretion_disc.
- Helioseismology wikiPageWikiLink Acoustics.
- Helioseismology wikiPageWikiLink Adiabatic_index.
- Helioseismology wikiPageWikiLink Adiabatic_lapse_rate.
- Helioseismology wikiPageWikiLink Adiabatic_process.
- Helioseismology wikiPageWikiLink Amplitude.
- Helioseismology wikiPageWikiLink Antipodal_point.
- Helioseismology wikiPageWikiLink Asteroseismology.
- Helioseismology wikiPageWikiLink Astrophysicist.
- Helioseismology wikiPageWikiLink Astrophysics.
- Helioseismology wikiPageWikiLink Category:Asteroseismology.
- Helioseismology wikiPageWikiLink Category:Fields_of_seismology.
- Helioseismology wikiPageWikiLink Category:Stellar_phenomena.
- Helioseismology wikiPageWikiLink Category:Sun.
- Helioseismology wikiPageWikiLink Christensen-Dalsgaard.
- Helioseismology wikiPageWikiLink Circular_symmetry.
- Helioseismology wikiPageWikiLink Convection.
- Helioseismology wikiPageWikiLink Convection_zone.
- Helioseismology wikiPageWikiLink Cosine.
- Helioseismology wikiPageWikiLink Damping.
- Helioseismology wikiPageWikiLink Degeneracy_(mathematics).
- Helioseismology wikiPageWikiLink Differential_rotation.
- Helioseismology wikiPageWikiLink Differential_rotation_in_stars.
- Helioseismology wikiPageWikiLink Diskoseismology.
- Helioseismology wikiPageWikiLink Doppler_effect.
- Helioseismology wikiPageWikiLink Doppler_shift.
- Helioseismology wikiPageWikiLink Dopplergraph.
- Helioseismology wikiPageWikiLink Dynamo.
- Helioseismology wikiPageWikiLink Earth.
- Helioseismology wikiPageWikiLink Eigenfunction.
- Helioseismology wikiPageWikiLink Eigenmode.
- Helioseismology wikiPageWikiLink Evanescent_wave.
- Helioseismology wikiPageWikiLink Fourier_analysis.
- Helioseismology wikiPageWikiLink Fourier_transform.
- Helioseismology wikiPageWikiLink Frequencies.
- Helioseismology wikiPageWikiLink Frequency.
- Helioseismology wikiPageWikiLink Frequency_separation.
- Helioseismology wikiPageWikiLink Gradient.
- Helioseismology wikiPageWikiLink Heat_capacity_ratio.
- Helioseismology wikiPageWikiLink Jet_stream.
- Helioseismology wikiPageWikiLink Jørgen_Christensen-Dalsgaard.
- Helioseismology wikiPageWikiLink Lapse_rate.
- Helioseismology wikiPageWikiLink Magneto-gravity.
- Helioseismology wikiPageWikiLink Magnetogravity_wave.
- Helioseismology wikiPageWikiLink Meridional.
- Helioseismology wikiPageWikiLink Moreton_wave.
- Helioseismology wikiPageWikiLink Nodal_line.
- Helioseismology wikiPageWikiLink Normal_mode.
- Helioseismology wikiPageWikiLink Normal_modes.
- Helioseismology wikiPageWikiLink Orbital_node.
- Helioseismology wikiPageWikiLink P-wave.
- Helioseismology wikiPageWikiLink Phoebus_group.
- Helioseismology wikiPageWikiLink Plage_(astronomy).
- Helioseismology wikiPageWikiLink Pressure_wave.
- Helioseismology wikiPageWikiLink Radiation_zone.
- Helioseismology wikiPageWikiLink S-wave.
- Helioseismology wikiPageWikiLink S-waves.
- Helioseismology wikiPageWikiLink SOHO_spacecraft.
- Helioseismology wikiPageWikiLink Seismic_migration.
- Helioseismology wikiPageWikiLink Seismic_wave.
- Helioseismology wikiPageWikiLink Sine.
- Helioseismology wikiPageWikiLink Solar_and_Heliospheric_Observatory.
- Helioseismology wikiPageWikiLink Solar_cycle.
- Helioseismology wikiPageWikiLink Solar_neutrino_problem.
- Helioseismology wikiPageWikiLink Solar_rotation.
- Helioseismology wikiPageWikiLink Solar_tower.
- Helioseismology wikiPageWikiLink Spectral_line.
- Helioseismology wikiPageWikiLink Spherically_symmetric.
- Helioseismology wikiPageWikiLink Standard_solar_model.
- Helioseismology wikiPageWikiLink Standing_wave.
- Helioseismology wikiPageWikiLink Standing_waves.
- Helioseismology wikiPageWikiLink Stellar_rotation.
- Helioseismology wikiPageWikiLink Stellar_structure.
- Helioseismology wikiPageWikiLink Sun.
- Helioseismology wikiPageWikiLink Sunspot.
- Helioseismology wikiPageWikiLink Sunspots.
- Helioseismology wikiPageWikiLink Supergranulation.
- Helioseismology wikiPageWikiLink Tachocline.
- Helioseismology wikiPageWikiLink Temperature.