Interpretation and mathematical modeling of temporal changes of temperature observed in borehole Yaxcopoil-1 within the Chicxulub impact structure, Mexico

0330216 - GFÚ 2010 RIV NL eng J - Journal Article
Šafanda, Jan - Wilhelm, H. - Heidinger, P. - Čermák, Vladimír
Interpretation and mathematical modeling of temporal changes of temperature observed in borehole Yaxcopoil-1 within the Chicxulub impact structure, Mexico.
Journal of Hydrology. Roč. 372, č. 1-4 (2009), s. 9-16. ISSN 0022-1694. E-ISSN 1879-2707
R&D Projects: GA ČR(CZ) GA205/06/1181
Grant - others:Deutsche Forschungsgemeinschaft(DE) W1 687/17-1,2,3
Institutional research plan: CEZ:AV0Z30120515
Keywords : repeated borehole temperature logging * karstic environment * Yucatan * groundwater convection * heat transport numerical simulation * fluid dynamics
Subject RIV: DC - Siesmology, Volcanology, Earth Structure
Impact factor: 2.433, year: 2009

Geothermal research of the Chicxulub impact structure on the Yucatan Peninsula, Mexico, included repeated temperature logs following 0.3–0.8, 15, 24, 34 and 50 months after shut-in of drilling operations at the 1.5 km deep Yaxcopoil-1 borehole. A gradual distortion of the linear temperature profile by a cold wave propagating downward from 145 m to 317 m was detected within the observational period of 49 months (March 2002–April 2006). The amplitude of the cold wave was increasing with depth and time in the range of 0.8–1.6°C. As an explanation of this unusual phenomenon, the hypothesis of downward migration of a large volume of drilling mud, reported lost during drilling within the overlying and cooler highly porous and permeable karstic rocks, has been proposed.
Permanent Link: http://hdl.handle.net/11104/0176058