THE IMPACT OF LANDSCAPE STRUCTURE OF CATCHMENT AREA ON LAKE HYDROLOGY

Grinfelde, I.; Bakute, A.; Pilecka, J.; Berzina, L.; Vebere, L. L.
Abstract:
One of the most investigated topics in hydrology, during last decades, is climate change impact on hydrological cycle. Changes in the use of land is additional factor influencing hydrological regime and watershed run-off. To understand urbanisation and climate change cumulative impact on watershed run-off, modelling of different climate change and land use scenarios would be essential. The aim of this study is to investigate how watershed run-off of the Usma Lake, located in Kurzeme region of Latvia, will respond to urbanisation and climate change using conceptual hydrological model METQ. To quantify watershed run-off changes, eighteen climate change scenarios (from very low to very high) and two linear urbanisation scenarios (low and high) analysed. Totally thirty-six climate-urban scenarios modelled, using conceptual hydrological model METQ. The results of climate-urban scenarios reviled, that extremely high watershed run-off events are more related with rain events than snow melting. The minimal watershed run-off periods become longer and with more often frequency. The urbanisation have significant impact on extreme watershed run-off values. The peaks of watershed run-off become more extreme and low watershed run-off (in some cases) are close to zero.
SGEM Research areas:
Year:
2019
Type of Publication:
In Proceedings
Keywords:
Conceptual hydrological model METQ; climate change; urbanisation; cumulative effect
Volume:
19
SGEM Book title:
19th International Multidisciplinary Scientific GeoConference SGEM 2019
Book number:
3.1
SGEM Series:
International Multidisciplinary Scientific GeoConference-SGEM
Pages:
569-576
Publisher address:
51 Alexander Malinov blvd, Sofia, 1712, Bulgaria
SGEM supporters:
Bulgarian Acad Sci; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci & Arts; Slovak Acad Sci; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; World Acad Sci; European Acad Sci, Arts & Letters; Ac
Period:
30 June - 6 July, 2019
ISBN:
978-619-7408-81-2
ISSN:
1314-2704
Conference:
19th International Multidisciplinary Scientific GeoConference SGEM 2019, 30 June - 6 July, 2019
DOI:
10.5593/sgem2019/3.1/S12.073
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