Investigación de la periodicidad de las fluctuaciones del nivel del agua subterránea somera en una región agrícola de Europa Central y Oriental

Translated title of the contribution: Investigation of the climate-driven periodicity of shallow groundwater level fluctuations in a Central-Eastern European agricultural region

Tamás Garamhegyi, József Kovács, Rita Pongrácz, Péter Tanos, István Gábor Hatvani

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The distribution and amount of groundwater, a crucial source of Earth’s drinking and irrigation water, is changing due to climate-change effects. Therefore, it is important to understand groundwater behavior in extreme scenarios, e.g. drought. Shallow groundwater (SGW) level fluctuation under natural conditions displays periodic behavior, i.e. seasonal variation. Thus, the study aims to investigate (1) the periodic behavior of the SGW level time series of an agriculturally important and drought-sensitive region in Central-Eastern Europe – the Carpathian Basin, in the north-eastern part of the Great Hungarian Plain, and (2) its relationship to the European atmospheric pressure action centers. Data from 216 SGW wells were studied using wavelet spectrum analysis and wavelet coherence analyses for 1961–2010. Locally, a clear relationship exists between the absence of annual periodic behavior in the SGW level and the periodicity of droughts, as indicated by the self-calibrating Palmer Drought Severity Index and the Aridity Index. During the non-periodic intervals, significant drops in groundwater levels (average 0.5 m) were recorded in 89% of the wells. This result links the meteorological variables to the periodic behavior of SGW, and consequently, drought. On a regional scale, Mediterranean cyclones from the Gulf of Genoa (northwest Italy) were found to be a driving factor in the 8-yr periodic behavior of the SGW wells. The research documents an important link between SGW levels and local/regional climate variables or indices, thereby facilitating the necessary adaptation strategies on national and/or regional scales, as these must take into account the predictions of drought-related climatic conditions.

Translated title of the contributionInvestigation of the climate-driven periodicity of shallow groundwater level fluctuations in a Central-Eastern European agricultural region
Original languageSpanish
Pages (from-to)677-688
Number of pages12
JournalHydrogeology Journal
Volume26
Issue number3
DOIs
Publication statusPublished - May 1 2018

Keywords

  • Climate change
  • Groundwater periodicity
  • Hungary
  • PDSI
  • Wavelet analyses

ASJC Scopus subject areas

  • Water Science and Technology
  • Earth and Planetary Sciences (miscellaneous)

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