Počet záznamů: 1

Thermal instability of the fluid column in a borehole: application to the Yaxcopoil hole (Mexico)

  1. 1.
    0330217 - GFU-E 2011 RIV DE eng J - Článek v odborném periodiku
    Čermák, Vladimír - Šafanda, Jan - Bodri, L.
    Thermal instability of the fluid column in a borehole: application to the Yaxcopoil hole (Mexico).
    International Journal of Earth Sciences. Roč. 99, č. 6 (2010), s. 1437-1451 ISSN 1437-3254
    Grant CEP: GA ČR(CZ) GA205/06/1181
    Výzkumný záměr: CEZ:AV0Z30120515
    Klíčová slova: temperature monitoring * borehole convection * recurrence and recurrence interval analyses * spectral analysis
    Kód oboru RIV: DC - Seismologie, vulkanologie a struktura Země
    Impakt faktor: 1.980, rok: 2010

    Observational evidence proved that even when a borehole is in "fully" stabilized conditions, temperature data may exhibit certain unrest resembling irregular oscillations in the order of hundredths or (in the extreme case) even tenths of degree. Temperature was monitored in complicated hydrogeological conditions in the Yaxcopoil-1 hole (Chicxulub impact structure, Mexico). Two experiments are reported: (a) 20-day monitoring when a logger was located in the center of the high temperature gradient anomaly produced by the cold wave slowly propagating downwards and (b) simultaneous three-loggers 18-day monitoring with loggers located above, in and below the anomaly. All observed temperature–time series displayed intermittent oscillations of temperature with sharp gradients and large fluctuations over all observed time scales.
    Trvalý link: http://hdl.handle.net/11104/0176059