About: Time-distance inversions for horizontal and vertical flows on supergranular scales applied to MDI and HMI data     Goto   Sponge   NotDistinct   Permalink

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  • We study the possibility of consistent extension of MDT full-disc helioseismic campaigns with the growing data set of HMI observations. To do so, we down-sample and filter the HMI Dopplegrams so that the resulting spatial power spectrum is similar to the spatial power spectrum of MDT full-disc Dopplergrams. The set of co-spatial and co-temporal datacube pairs from both instruments containing no missing and no bad frames were processed using the same codes and inverted independently for all three components of the plasma flow in the near surface layers. The results from the two instruments are highly correlated, however systematically larger (by similar to 20%) flow magnitudes are derived from HMI. We comment that this may be an effect of the different formation depth of the Doppler signal from the two instruments.
  • We study the possibility of consistent extension of MDT full-disc helioseismic campaigns with the growing data set of HMI observations. To do so, we down-sample and filter the HMI Dopplegrams so that the resulting spatial power spectrum is similar to the spatial power spectrum of MDT full-disc Dopplergrams. The set of co-spatial and co-temporal datacube pairs from both instruments containing no missing and no bad frames were processed using the same codes and inverted independently for all three components of the plasma flow in the near surface layers. The results from the two instruments are highly correlated, however systematically larger (by similar to 20%) flow magnitudes are derived from HMI. We comment that this may be an effect of the different formation depth of the Doppler signal from the two instruments. (en)
Title
  • Time-distance inversions for horizontal and vertical flows on supergranular scales applied to MDI and HMI data
  • Time-distance inversions for horizontal and vertical flows on supergranular scales applied to MDI and HMI data (en)
skos:prefLabel
  • Time-distance inversions for horizontal and vertical flows on supergranular scales applied to MDI and HMI data
  • Time-distance inversions for horizontal and vertical flows on supergranular scales applied to MDI and HMI data (en)
skos:notation
  • RIV/00216208:11320/13:10193969!RIV14-MSM-11320___
http://linked.open...avai/riv/aktivita
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  • I, P(GPP209/12/P568)
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  • 111112
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  • RIV/00216208:11320/13:10193969
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  • HELIOSEISMOLOGY (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [4D198C5CCB94]
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  • AUSTRALIA
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  • England
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  • Journal of Physics Conference Series
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  • Švanda, Michal
  • Burston, R.
  • Schunker, H.
http://linked.open...vavai/riv/typAkce
http://linked.open...ain/vavai/riv/wos
  • 000325951200024
http://linked.open.../riv/zahajeniAkce
issn
  • 1742-6588
number of pages
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  • 10.1088/1742-6596/440/1/012024
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  • IOP PUBLISHING LTD, DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
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  • 11320
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