Terrestrial Gamma ray Flashes from low clouds over the Mediterranean sea (Abstract/Poster in convegno)

Type
Label
  • Terrestrial Gamma ray Flashes from low clouds over the Mediterranean sea (Abstract/Poster in convegno) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Alternative label
  • Gjesteland, T.; Ostgaard, N.; Marisaldi, M.; Fuschino, F.; Arnone, E.; Laviola, S.; Collier, A. (2013)
    Terrestrial Gamma ray Flashes from low clouds over the Mediterranean sea
    in American Geophysical Union, Fall Meeting 2013, San Francisco, CA, Dicembre 2013
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Gjesteland, T.; Ostgaard, N.; Marisaldi, M.; Fuschino, F.; Arnone, E.; Laviola, S.; Collier, A. (literal)
Note
  • Poster (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • AA(Birkeland Centre for Space Science, University of Bergen, Bergen, Norway; thomas.gjesteland@uib.no), AB(Birkeland Centre for Space Science, University of Bergen, Bergen, Norway; Nikolai.Ostgaard@ift.uib.no), AC(Birkeland Centre for Space Science, University of Bergen, Bergen, Norway; marisaldi@iasfbo.inaf.it), AD(IASF, INAF, Bologna, Italy; fuschino@iasfbo.inaf.it), AE(ISAC, CNR, Bologna, Italy; e.arnone@isac.cnr.it), AF(ISAC, CNR, Bologna, Italy; s.laviola@isac.cnr.it), AG(Birkeland Centre for Space Science, University of Bergen, Bergen, Norway; collierab@gmail.com) (literal)
Titolo
  • Terrestrial Gamma ray Flashes from low clouds over the Mediterranean sea (literal)
Abstract
  • We will present Terrestrial Gamma ray Flashes (TGFs ) observed over the Mediterranean sea. All these TGFs were produced in thunderstorms with cloud tops less than 10 km altitude, which is lower than the suggested typical TGF production altitude (15 km). An event on May 27, 2004 happened during spring when the cloud top in the Mediterranean sea is 6-8 km. The other TGFs occurred during fall. For these we have a cloud top estimation of 10 km. One of the Mediterranean TGFs is among the 1% brightest TGFs ever measured by RHESSI. We have estimated that the Mediterranean TGFs may contain up to 10^20 initial photons, with energy above 1 MeV, at source in order to escape atmospheric attenuation, which is three orders of magnitude higher than the commonly accepted value. (literal)
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