Integrated runoff and balance analysis concerning Greek-Bulgarian transboundary hydrological basin of River Nestos/Mesta

Mimides, T.; Kotsovinos, Nikolaos; Rizos, S.; Soulis, C.; Karakatsoulis, P.; Stavropoulos, D.

doi:10.1016/j.desal.2006.04.086

Cited by 4 publications

(3 citation statements)

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“…Combining the results of cumulative anomaly analysis and Mann-Kendall test, the abrupt change point from low streamflow to high streamflow occurs around AD 1720. For reasons of rational use of water resources and maintaining ecological balance, it is important to understand the long-term changes in runoff [40][41][42]. Studies in Bulgaria have also shown that inter-decadal and inter-annual changes in surface runoff have important implications for water use [40], which changed from ~100 L/person/day in 1970, it rose to the highest value of ~220 L/person/day in 1990, and then began to drop to ~140 L/person/day in 1995 [43].…”

Section: Analysis Of Variation Characteristicsmentioning

confidence: 99%

“…For reasons of rational use of water resources and maintaining ecological balance, it is important to understand the long-term changes in runoff [40][41][42]. Studies in Bulgaria have also shown that inter-decadal and inter-annual changes in surface runoff have important implications for water use [40], which changed from ~100 L/person/day in 1970, it rose to the highest value of ~220 L/person/day in 1990, and then began to drop to ~140 L/person/day in 1995 [43]. In the past 500 years, the results of flow reconstruction in the area near the Baltic Sea region [44] also show that the streamflow changes have different scales of periodic changes, such as 16 years, 32 years and above period.…”

Section: Analysis Of Variation Characteristicsmentioning

confidence: 99%

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Streamflow Reconstruction and Variation Characteristic Analysis of the Ganjiang River in China for the Past 515 Years

Wan

Chen

et al. 2020

Sustainability

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River flow reconstruction under the background of long-term climate change is of great significance for understanding the regional response to future drought and flood disasters, and the sustainable development of water resources. Investigating the basic characteristics and changing trends of the streamflow of the Ganjiang River is scientifically important to mitigate drought and flood disasters in the future. This study reconstructed drought and flood grade series of five regional stations of the Ganjiang River based on spatially explicit and well-dated local chronicle materials and used a linear regression model of modern drought/flood grades and precipitation to reconstruct historical precipitation for the past 515 years. The relationships between the modern precipitation of five regional stations and streamflow of Waizhou Station, which is the last hydrological station of the Ganjiang River were analyzed through principal component regression. The adjusted R2 is 0.909, with a low relative bias of −1.82%. The variation of streamflow from AD 1500 to AD 2014 was reconstructed using the proposed model. Result shows that high flows occur in nine periods and low flows occur in 11 periods. Extremely low stream flow in 515 years appears during the middle and late 17th century. Cumulative anomaly and Mann-Kendall mutation test results reveal that a transition point from predominantly low to high flows occur in AD 1720. Redfit power spectrum analysis result shows that the variation periods of streamflow are 2–5, 7–8 years, and approximately 32 years, where the most significant period is 2–3 years. Continuous wavelet transform indicates that the corresponding relation occurs between streamflow and El Niño/Southern Oscillation for eight years. Streamflow is affected by temperature and East Asian monsoon that is controlled by solar activities. The flood may be related to strong solar activity, monsoon failure, and vice versa. Hydrological frequency curve analysis shows that the streamflow of the Ganjiang River once in a hundred years may reach up to 1031 × 108 m3 for flood or 485 × 108 m3 for drought and the standard of once in a millennium runoff may reach up to 1188 × 108 m3 for flood or 450 × 108 m3 for drought. These results may provide basic hydrological data for the sustainable development of society and serve as a reference for mitigating the impact of drought and flood disasters in the future.

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Section: Analysis Of Variation Characteristicsmentioning

confidence: 99%

Section: Analysis Of Variation Characteristicsmentioning

confidence: 99%

Streamflow Reconstruction and Variation Characteristic Analysis of the Ganjiang River in China for the Past 515 Years

Wan

Chen

et al. 2020

Sustainability

View full text Add to dashboard Cite

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“…A more thorough analysis with longer data series is needed for this purpose. For example, Mimides et al [53,54] using a long data series from stations in southern Bulgaria and northern Greece observed the appearance of wet periods with periodic trends of about 20 years. However, Markonis et al [55] reported that most regions in Greece show a decline in precipitation since 1950, an increase since 1980 and remain stable during the last 15 years.…”

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confidence: 99%

Delimitation of Agricultural Areas with Natural Constraints in Greece: Assessment of the Dryness Climatic Criterion Using Geostatistics

2018

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The Less Favored Areas (LFAs) scheme has existed in various forms since 1975 and it is a broad mechanism supporting rural development in agricultural areas with natural constraints (ANC). Within the programme period 2014-2020, the European Commission developed a common set of biophysical criteria (soil, climate, and terrain) to meet the requirement for a robust and harmonized approach of delimiting ANC throughout the EU Member States. Soil and terrain criteria can be derived directly from soil maps using geospatial analysis techniques based on the provided guidelines. However, the assessment of climatic criteria can be challenging especially in regions characterized by increased spatial variability and data scarcity. In this paper, the assessment of the dryness climatic criterion in a data-scarce region (Greece) as well as the challenges, limitations, and solutions are presented. Daily data-series from 140 meteorological stations for a 30-year reference period were analyzed and the spatial distribution of the precipitation and the potential evapotranspiration for each year were estimated in order to make the final assessment of the dryness criterion. Climate variability and the presence of trends were investigated as well. The obtained results indicated that most of the utilized agricultural area is affected by dryness due to a combination of low precipitation and high evapotranspiration rates. The extreme spatial variability especially in precipitation was also highlighted. An important temporal variability was observed as well, including indications of decreasing trends in precipitation and aridity index. Climate variability and possible trends should be investigated in more detail using longer time series in order to evaluate their impact in agricultural production.

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Natural and anthropogenic effects on the sediment geochemistry of Nestos river, Northern Greece

et al. 2008

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Integrated runoff and balance analysis concerning Greek-Bulgarian transboundary hydrological basin of River Nestos/Mesta

Cited by 4 publications

References 0 publications

Streamflow Reconstruction and Variation Characteristic Analysis of the Ganjiang River in China for the Past 515 Years

Streamflow Reconstruction and Variation Characteristic Analysis of the Ganjiang River in China for the Past 515 Years

Delimitation of Agricultural Areas with Natural Constraints in Greece: Assessment of the Dryness Climatic Criterion Using Geostatistics

Natural and anthropogenic effects on the sediment geochemistry of Nestos river, Northern Greece

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