<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>The study of changes in river discharge and flood regime can provide important information on climate change and its impacts. Wavelet analysis offers new possibilities to study changes of river discharge patterns in regard to periodical processes on a background of climate change. In this study wavelet analysis was used to study long-term changes of river discharge in the Baltic region. Periodic oscillations of discharge intensity, and low- and high-water flow years are common for the major rivers in the Eastern Baltic region. Main frequencies of river discharge were estimated to be 14, 28, 37 years for the studied rivers. Wavelet analysis allowed to identify similarities between the river discharge regime, and thus, the factors influencing it. Years of maximal and minimal discharges for major rivers were identified and the impact of large-scale atmospheric circulation processes on the river discharge was studied.</p></abstract>

The study of changes in river discharge and flood regime can provide important information on climate change and its impacts. Wavelet analysis offers new possibilities to study changes of river discharge patterns in regard to periodical processes on a background of climate change. In this study wavelet analysis was used to study long-term changes of river discharge in the Baltic region. Periodic oscillations of discharge intensity, and low- and high-water flow years are common for the major rivers in the Eastern Baltic region. Main frequencies of river discharge were estimated to be 14, 28, 37 years for the studied rivers. Wavelet analysis allowed to identify similarities between the river discharge regime, and thus, the factors influencing it. Years of maximal and minimal discharges for major rivers were identified and the impact of large-scale atmospheric circulation processes on the river discharge was studied.

Wavelet analysis of the Baltic region river runoff longh-term trends and fluctuations

Faculty of Physics and Mathematics, University of Latvia, Zeļļu 8, Rīga, LV-1002, LATVIA

Faculty of Geography and Earth Sciences, University of Latvia, Raiņa bulv. 19, LV-1586, Rīga, LATVIA

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.

The study of changes in river discharge and flood regime can provide important information on climate change and its impacts. Wavelet analysis offers new...

Wavelet analysis of the Baltic region river runoff longh-term trends and fluctuations

Pubblicato online: 09 ago 2011

Pagine: 229 - 235

DOI: https://doi.org/10.2478/v10046-011-0009-1

Parole chiave
discharge, long-term variability, trends, wavelet analysis, Baltic region

This content is open access.

Wavelet analysis of the Baltic region river runoff longh-term trends and fluctuations

Pubblicato online: 09 ago 2011

Pagine: 229 - 235

DOI: https://doi.org/10.2478/v10046-011-0009-1

Parole chiavedischarge, long-term variability, trends, wavelet analysis, Baltic region

This content is open access.

Parole chiave
discharge, long-term variability, trends, wavelet analysis, Baltic region