D 2006

Long-term fluctuations of floods in the Czech Republic

BRÁZDIL, Rudolf, Petr DOBROVOLNÝ and Jarmila MACKOVÁ

Basic information

Original name

Long-term fluctuations of floods in the Czech Republic

Name in Czech

Dolohodobé kolísání povodní v České republice

Name (in English)

Long-term fluctuations of floods in the Czech Republic

Authors

BRÁZDIL, Rudolf (203 Czech Republic, guarantor), Petr DOBROVOLNÝ (203 Czech Republic) and Jarmila MACKOVÁ (203 Czech Republic)

Edition

Vienna, Geophysical Research Abstracts, EGU General Assembly, Vol. 8, p. 1-1, 2006

Publisher

European Geophysical Union

Other information

Language

Czech

Type of outcome

Stať ve sborníku

Field of Study

10000 1. Natural Sciences

Country of publisher

Austria

Confidentiality degree

není předmětem státního či obchodního tajemství

RIV identification code

RIV/00216224:14310/06:00024589

Organization unit

Faculty of Science

ISSN

Keywords in English

floods; long term trends; Czech Republic

Tags

International impact
Změněno: 14/5/2009 13:04, Mgr. Jarmila Burianová, Ph.D.

Abstract

V originále

The paper presents results of analysis of flood series in the instrumental period for the Elbe,Děčín (1851 to 2003), the Vltava, Prague (1825 to 2003), the Ohře, Louny (1884 to 2003), the Odra, Bohumín (1896 to 2003) and the Morava, Kroměříž (1881 to 2003). Sea level pressure patterns based on PCA are analysed for floods of the winter synoptic type (snow melting, ice damming) and of summer synoptic type (heavy precipitation). There is a significant decrease in the number of floods and their severity (expressed by a return period of maximum peak discharges) from the 2nd part of the 19th century to the end of the 20th century. It is consistent with global warming with significant decrease in the number of winter floods. Above series of floods are extended into the pre-instrumental period based on different kinds of documentary evidence (e.g. narrative reports, newspapers, watermarks) and presented in decadal frequencies since the 15th century. The most disastrous floodings in the territory of the Czech Republic during past millennium were recorded in the years 1118, 1432, 1501, 1598, 1655, 1675, 1784, 1845, 1862, 1872, 1890, 1903, 1938, 1997, 2002. Since 1872 all catastrophic flood events were caused by extreme precipitation. Synthesis of documentary and instrumental floods shows long term flood trends with maximum of floods during the 19th century and the 2nd part of the 16th century. The 20th century belonged to relatively very quiet periods.

In English

The paper presents results of analysis of flood series in the instrumental period for the Elbe,Děčín (1851 to 2003), the Vltava, Prague (1825 to 2003), the Ohře, Louny (1884 to 2003), the Odra, Bohumín (1896 to 2003) and the Morava, Kroměříž (1881 to 2003). Sea level pressure patterns based on PCA are analysed for floods of the winter synoptic type (snow melting, ice damming) and of summer synoptic type (heavy precipitation). There is a significant decrease in the number of floods and their severity (expressed by a return period of maximum peak discharges) from the 2nd part of the 19th century to the end of the 20th century. It is consistent with global warming with significant decrease in the number of winter floods. Above series of floods are extended into the pre-instrumental period based on different kinds of documentary evidence (e.g. narrative reports, newspapers, watermarks) and presented in decadal frequencies since the 15th century. The most disastrous floodings in the territory of the Czech Republic during past millennium were recorded in the years 1118, 1432, 1501, 1598, 1655, 1675, 1784, 1845, 1862, 1872, 1890, 1903, 1938, 1997, 2002. Since 1872 all catastrophic flood events were caused by extreme precipitation. Synthesis of documentary and instrumental floods shows long term flood trends with maximum of floods during the 19th century and the 2nd part of the 16th century. The 20th century belonged to relatively very quiet periods.

Links

GA205/03/Z016, research and development project
Name: Historické a současné povodně v České republice: příčiny, sezonalita, trendy, dopady
Investor: Czech Science Foundation, Historical and recent floods in the Czech Republic: causes, sezonality, trends, impacts