DBPapers
DOI: 10.5593/sgem2017/31/S12.071

SEASONAL CHANGES IN HYDROLOGICAL REGIME IN SUBSURFACE RUNOFF IN MIDDLE LITHUANIA

O. Miseckaite, A.A. Volcek, A. Povilaitis, G. Vyciene
Monday 11 September 2017 by Libadmin2017

References: 17th International Multidisciplinary Scientific GeoConference SGEM 2017, www.sgem.org, SGEM2017 Conference Proceedings, ISBN 978-619-7408-04-1 / ISSN 1314-2704, 29 June - 5 July, 2017, Vol. 17, Issue 31, 569-576 pp, DOI: 10.5593/sgem2017/31/S12.071

ABSTRACT

The activity of drainage during various seasons and the impact of meteorological conditions on drainage runoff in different seasons (winter, spring, summer and autumn) during the period of 1969-2009 are reviewed. Particularly important indicator of drainage activity – dynamics of water runoff. The present article analyzes the change of climatic conditions in the object, Central Lithuania, following the data of Kaunas Meteorological Station; and it is determined that during the period of 1969-2009 the lowest quantity of precipitation is during spring and winter, and the highest – during summer and autumn in the territory under research. While analyzing the temperature in decades, it is found that it has been constantly increasing during spring, and in the past decade (2000-2009) was 1,13 ° C higher, compared to the average temperature of 1970-2009. Following the data of four decades, drainage runoff is the highest in spring and the lowest - in summer. While examining the impact of meteorological conditions on dynamics of drainage runoff in the presence of changing climatic conditions, it is determined that the relationship between drainage runoff and precipitation during different seasons was weak (spring and summer) and the average one during winter and autumn. The analysis of relation between drainage runoff and average air temperature during different seasons revealed the average relation during winter and very weak relation during other seasons.

Keywords: climate change, seasons, subsurface drainage, Middle Lithuania