Record details

    Tidal modulation of temperature oscillations monitored in borehole Yaxcopoil-1 (Yucatán, Mexico)
    Bodri, L.
    Čermák, Vladimír
    Šafanda, Jan
Publication type
    článek v odborném periodiku
Source title - serial
    Earth and Planetary Science Letters
    Roč. 282, č. 1-4
    s. 131-139
    Projekt: GA205/06/1181, GA ČR, CZ3cav_un_auth*0216770
    Projekt: IAA300120603, GA AV ČR, CZ3cav_un_auth*0216773
    Rozsah: 9 s.
    Výzkumný záměr: CEZ:AV0Z30120515
Subject category
    borehole convection
    histograms cumulation technique
    recurrence quantification interval
    (RQI) analysis
    temperature monitoring
    tidal forcing
Abstract (in english)
   For better understanding of temperature state in the subsurface, temperature-depth logs can be suitably completed by high-resolution long-run temperature-time monitoring at selected depths. The results of temperature monitoring at three depth levels in borehole Yaxcopoil-1, Chicxulub impact structure, Mexico (April/May 2006) proved that even when a borehole is in "fully" stabilized conditions, temperature may exhibit certain unrest resembling irregular oscillations in the order of hundredths or (in the extreme case) even first tenths of degree. Two novel methods for detection of the weak fingerprints of stable periodic components in long noisy records, namely the RQI (Recurrence Quantification Interval) analysis and the HiCum (Histograms Cumulation) were used to isolate the constituents with tidal periodicities from temperature oscillations measured in borehole Yaxcopoil-1.
    AV ČR Brno, Geofyzikální ústav
Contributor code
    AV ČR, GFÚ
Source format
Import date
    9. 12. 2013