On the Origin of Quasi-Periodic Temperature Variations in Kun-1 Well (Kunashir Island)
| Autor: | D. Yu. Demezhko, A. K. Yurkov |
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| Rok vydání: | 2017 |
| Předmět: |
Atmospheric Science
education.field_of_study 010504 meteorology & atmospheric sciences Deformation (mechanics) Convective heat transfer Population Magnitude (mathematics) 010502 geochemistry & geophysics Oceanography 01 natural sciences Tectonics Amplitude Period (geology) education Variation (astronomy) Geology Seismology 0105 earth and related environmental sciences |
| Zdroj: | Izvestiya, Atmospheric and Oceanic Physics. 53:804-812 |
| ISSN: | 1555-628X 0001-4338 |
| DOI: | 10.1134/s0001433817080023 |
| Popis: | The results of temperature monitoring in the 300-m kun-1 well (Kunashir Island) in 2011–2015 are considered. Quasi-periodic temperature variations with an amplitude of up to 0.3°C and a variation period of 14–26 h were added from November 2011 to the previously observed temperature variations caused by tidal deformations, free thermal convection, and deformation processes associated with the preparation and occurrence of tectonic earthquakes. Five cycles of such variations lasting from 2 to 6 months have been recorded. Each cycle was initiated by an earthquake with magnitude M > 2.5log(R), where R is the epicentral distance (km). According to their characteristics, the variations are unique and have not been described previously. Assumptions have been made about the possible connection of the registered variations with the inertial currents of the ocean or with hydrothermal processes in the Earth’s subsurface. The phenomenon discovered requires further study not only as an object of fundamental science, but also as a feature of an earlier unknown type of geodynamic activity that can be a significant threat to the regional population. |
| Databáze: | OpenAIRE |
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