<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>Drought as a natural phenomenon becomes more often the subject of the research. It is because of the increasing frequency of extreme climatic events also in mild climate conditions. Groundwater drought indices could be derived for different groundwater parameters, among them for base flow, groundwater head stage, spring yield, or groundwater recharge. Base flow drought assessment methods were proposed in the paper. Base flow values were separated from the discharge hydrograms using the new HydroOffice 2010 program package, lately developed by Gregor. The base flow drought severity index was applied, calculated as the value of the base flow drought deficit volume divided by the drought duration. After that, the standardized base flow drought severity index was proposed as the ratio of the base flow drought index and the average long-term annual base flow. Proposed methods were applied in the Nitra River basin. Base flow drought occurrence was characterized also from the seasonality point of view.</p></abstract>

Drought as a natural phenomenon becomes more often the subject of the research. It is because of the increasing frequency of extreme climatic events also in mild climate conditions. Groundwater drought indices could be derived for different groundwater parameters, among them for base flow, groundwater head stage, spring yield, or groundwater recharge. Base flow drought assessment methods were proposed in the paper. Base flow values were separated from the discharge hydrograms using the new HydroOffice 2010 program package, lately developed by Gregor. The base flow drought severity index was applied, calculated as the value of the base flow drought deficit volume divided by the drought duration. After that, the standardized base flow drought severity index was proposed as the ratio of the base flow drought index and the average long-term annual base flow. Proposed methods were applied in the Nitra River basin. Base flow drought occurrence was characterized also from the seasonality point of view.

Groundwater Drought in the Nitra River Basin - Identification and Classification

Department of Hydrogeology, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Pav. G, 842 15 Bratislava

Journal of Hydrology and Hydromechanics

{"article-title":"Groundwater Drought in the Nitra River Basin - Identification and Classification"}

Drought as a natural phenomenon becomes more often the subject of the research. It is because of the increasing frequency of extreme climatic events also in...

Groundwater Drought in the Nitra River Basin - Identification and Classification

Published Online: Aug 30, 2012

Page range: 185 - 193

DOI: https://doi.org/10.2478/v10098-012-0016-1

Keywords
sucho, parameter podzemnej vody, čiara prekročenia, metóda hraničnej hodnoty, normalizovaný index závažnosti sucha v podzemnom odtoku, povodie toku Nitra

This content is open access.

Groundwater Drought in the Nitra River Basin - Identification and Classification

Published Online: Aug 30, 2012

Page range: 185 - 193

DOI: https://doi.org/10.2478/v10098-012-0016-1

Keywordssucho, parameter podzemnej vody, čiara prekročenia, metóda hraničnej hodnoty, normalizovaný index závažnosti sucha v podzemnom odtoku, povodie toku Nitra

This content is open access.

Keywords
sucho, parameter podzemnej vody, čiara prekročenia, metóda hraničnej hodnoty, normalizovaný index závažnosti sucha v podzemnom odtoku, povodie toku Nitra