Zmienność temperatury gruntu w Hornsundzie w okresie 1979-1999

• Autorzy: Miętus M. , Filipiak J.

Warianty tytułu

EN

The variability of the soil temperature in Hornsund, SW Spitsbergen, 1979-1999

• Języki publikacji: PL

Abstrakty

EN

In the paper the analysis of the variability of the soil temperature on the Polish polar station in Hornsund, situated in southwestern part of Spitsbergen, has been presented. The soil temperature data from the depths 5, 10, 20, 50 and 100 cm cover the period 1979-1999. In the annual cycle of the soil temperature variability the 8-month period, while the soil is frozen, can be observed. Positive values of temperature in the whole-analyzed profile occur only during the 3-month-lasting period from July to September. In the cool season the highest temperatures are recorded in the deeper layer, additionally the greatest values of the standard deviation in the considered depths are met. In the warm season the temperature decreases with the depth. During the spring and autumn, when the isothermal conditions in the soil profile are observed, the reversion of the temperature profile is recorded. The most thermally active layer is the upper one - deep to 20 cm. Reaction of deeper layers to the thermal processes above the ground and in the upper layers is weaker and time-delayed. The greatest differences of temperature between the lowest layer and the upper ones are recorded during the polar night. Air temperature significantly influences the variability of the soil temperature. The relationships between the soil temperature and the other meteorological elements i.e. sunshine duration, cloudiness, persistence of snow cover and its depth are not confirmed by the high values of correlation coefficients. The annual variability of the soil temperature can be approximated with the first harmonic. Below the depth of 184 cm maximum soil temperature do not exceed 0°C. In the whole examined profile the positive long-term tendencies of the temperature are observed, but the statistically significant trend (+0.126°C/year) occurs only on depth 10 cm.

Słowa kluczowe

PL

zmienność temperatury; temperatura gruntu; Hornsund

EN

temperature variations; soil temperature

• Wydawca: Polskie Towarzystwa Geofizyczne ; Komitet Geofizyki PAN
• Czasopismo: Przegląd Geofizyczny
• Rocznik: 2001
• Tom: Z. 4
• Strony: 323--337
• Opis fizyczny: wykr., bibliogr. 10 poz.

Twórcy

autor

Miętus M.

autor

Filipiak J.

• IMGW, Oddział Morski w Gdyni