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ACS Style

Mark D. Svoboda; Sergio M. Vicente‐Serrano; Marina Peña-Gallardo; Jamie Hannaford; Jorge Lorenzo-Lacruz; Steven Quiring; Fernando Dominguez-Castro; Marco P. Maneta; Miquel Tomàs-Burguera; A. El Kenawy. Complex spatial and temporal influences of climatic drought time-scales on hydrological droughts in natural basins of U.S. Proceedings of First International Electronic Conference on the Hydrological Cycle 2017, 4835 .

AMA Style

Mark D. Svoboda, Sergio M. Vicente‐Serrano, Marina Peña-Gallardo, Jamie Hannaford, Jorge Lorenzo-Lacruz, Steven Quiring, Fernando Dominguez-Castro, Marco P. Maneta, Miquel Tomàs-Burguera, A. El Kenawy. Complex spatial and temporal influences of climatic drought time-scales on hydrological droughts in natural basins of U.S. Proceedings of First International Electronic Conference on the Hydrological Cycle. 2017; ():4835.

Chicago/Turabian Style

Mark D. Svoboda; Sergio M. Vicente‐Serrano; Marina Peña-Gallardo; Jamie Hannaford; Jorge Lorenzo-Lacruz; Steven Quiring; Fernando Dominguez-Castro; Marco P. Maneta; Miquel Tomàs-Burguera; A. El Kenawy. 2017. "Complex spatial and temporal influences of climatic drought time-scales on hydrological droughts in natural basins of U.S." Proceedings of First International Electronic Conference on the Hydrological Cycle , no. : 4835.

Complex spatial and temporal influences of climatic drought time-scales on hydrological droughts in natural basins of U.S.

1  National Drought Mitigation Centre, University of Nebraska-Lincoln, USA
2  CSIC, Spain
3  Centre for Ecology and Hydrology, UK
4  University of Isles Balears, Spain
5  Ohio State University, USA
6  University of Montana, Missoula, USA

Abstract: We have analysed the response of hydrological droughts to climatic droughts in different natural basins of United States of America. For this purpose we selected 289 complete series from an initial data set of 702 gauging stations, covering the period between 1940 and 2013. Drainage basins were obtained for each gauging station using a digital terrain model, and climate series (precipitation and the atmospheric evaporative demand) were obtained for each drainage series. A number of topographic, edaphic and remote sensing variables were quantified for each basin. A hydrological drought index (The Standardized Stream Flow Index-SSI) was obtained for each basin and the Standardized Precipitation Evapotranspiration Index (SPEI) was used as a metric of climatic drought severity. Relationship between different SPEI time scales and the SSI was quantified using Pearson’s correlations and the general patterns of response of hydrological droughts to climatic droughts were identified using a principal component analysis. In general there is a response of SSI to short SPEI time-scales but strong seasonality in this response is also found. Coherent geographic patterns were obtained from the analysis and the factors that control the different responses were analysed by means of a predictive discriminant analysis. Independent analysis for three periods (1940-1964, 1965-1989 and 1989-2013) were also performed and showed not important changes in the response of the SSI to the SPEI in the past 65 years.

Keywords: SPEI, model, time scales, Basins, SSI, Hydrological Droughts, analysed the response, droughts to climatic

Published: 05 November 2017 in Proceedings of First International Electronic Conference on the Hydrological Cycle

https://doi.org/10.3390/chycle-2017-04835

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