Fluctuation annuelle des amplitudes des variations electriques journalieres mesurees dans un arbre vivant

Translated title of the contribution: Annual fluctuation in amplitudes of daily variations of electrical signals measured in the trunk of a standing tree

András Koppán, László Szarka, Viktor Wesztergom

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Electrical potential differences between electrodes inserted in eight selected sites of the trunk of a Turkey oak (Quercus cerris) and the ground have been recorded continuously since November 1997. The mean amplitudes of daily electric variations were determined for time intervals when the meteorological and atmospheric electricity conditions were undisturbed. It was found that the mean daily amplitudes show a characteristic annual fluctuation. Both in 1998 and in 1999 two peaks were observed: the first maximum appears suddenly about the end of March, and the second one was seen in late June, July. Between November and March the mean amplitudes were smaller by about one order of magnitude. (C) 2000 Academie des sciences/Editions scientifiques et medicales Elsevier SAS.

Translated title of the contributionAnnual fluctuation in amplitudes of daily variations of electrical signals measured in the trunk of a standing tree
Original languageFrench
Pages (from-to)559-563
Number of pages5
JournalComptes Rendus de l'Academie des Sciences - Serie III
Volume323
Issue number6
DOIs
Publication statusPublished - Jun 2000

Keywords

  • Annual fluctuation
  • Daily variation
  • Electric signal
  • Standing tree

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Developmental Biology

Fingerprint Dive into the research topics of 'Annual fluctuation in amplitudes of daily variations of electrical signals measured in the trunk of a standing tree'. Together they form a unique fingerprint.

  • Cite this