Analysis of the Impacts of Man-Made Features on the Stationarity and Dependence of Monthly Mean Maximum and Minimum Water Levels in the Great Lakes and St. Lawrence River of North America

Assani, Ali A.

doi:10.3390/w8110485

Cited by 4 publications

(3 citation statements)

References 19 publications

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“…The issue of water level fluctuations is addressed in many limnological studies. The issue is analysed among others in the long-term (Van Der Kamp et al 2008;Propastin 2012;Kaiser et al 2015;Wrzesiński and Ptak 2016) as well as in reference to seasonal fluctuations in the annual cycle (Quinn 2002;Gronewold and Stow 2014;Assani 2016). The present results refer to those of this last set of works, which analysed seasonal water level fluctuations based on hydrological periods designated in the case of lakes in the new methodological approach.…”

Section: Resultssupporting

confidence: 62%

Seasonal structure of water stages on lakes in Northern Poland

Plewa

Wrzesiński

Ptak

2018

Bulletin of Geography. Physical Geography Series

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The paper presents the characteristics of hydrological periods in an average annual cycle in Polish lakes. The types of period and their sequence determine the regime of water stages in lakes. The article applies the unsupervised approach to analysis of water level fluctuation patterns, where the regime is identified by grouping analytical parameters. Hydrological periods were designated by grouping elementary time units of the hydrological year (pentads) based on the similarity of their parameters, namely water level frequency distributions. The analysis covered daily water stages in 33 lakes in Poland from the period from 1984 to 2012. Five types of hydrological period were designated. The studied lakes differ in the number, type and sequence of hydrological periods in an average annual cycle. Most of the lakes (19 lakes) have a 4-period temporal structure of water stages with the course of water stages in a year characteristic of this geographical zone. No spatial patterns occurred in the location of lakes from particular groups. This suggests the dominant role of local factors in determining the seasonality of water stages.

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Section: Resultssupporting

confidence: 62%

Seasonal structure of water stages on lakes in Northern Poland

Plewa

Wrzesiński

Ptak

2018

Bulletin of Geography. Physical Geography Series

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“…The research was primarily conducted in the context of the possibility of the occurrence of forecasting drought. As in this paper, other publications [40,41] have presented analyses of maximum water levels in lakes. The analyses, however, were performed particularly for the purpose of determining changes in the value of average water levels and their variability in a given multiannual period.…”

Section: Discussionmentioning

confidence: 91%

“…They are exceptionally useful and practical approaches in studies on correlations between random variables. The copula theory has already been applied in limnological research, e.g., in the determination of the probability of occurrence of hydrological draught in Lake Poyang and the Yangtse River system [39], in the determination of correlations between extreme water levels in Lake Ontario and the Saint Lawrence River [40], in the determination of correlations of water levels in the Great Lakes and the Saint Lawrence River [41], and in an analysis of the quantity of water supplied to dam reservoirs in the context of forecasting the occurrence of draught [42]. This paper points to the possibility of obtaining new information resulting from the applied new research approach.…”

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confidence: 99%

Probabilistic Assessment of Correlations of Water Levels in Polish Coastal Lakes with Sea Water Level with the Application of Archimedean Copulas

Plewa

Perz

Wrzesiński

et al. 2019

Water

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The hydrology of coastal lakes differs significantly from that of inland water bodies due to the influence of the neighboring sea. Observed climatic changes are expected to enhance the effect of the sea on coastal lake ecosystems, which makes research on sea-lake interactions even more significant. In this study, on the basis of maximum annual and monthly values of water level, dependencies among the water levels of six lakes located along the southern coast of the Baltic Sea in Poland, and the Baltic Sea water levels were analyzed. First, the Spearman rank correlation and the linear regression method were applied. Then, selected copulas were used to find joint distributions of the studied time series. In the next stage, the degrees of synchronous and asynchronous occurrences of maximum water levels in lakes and the sea were calculated. The study revealed that correlations between the maximum annual water levels in coastal lakes and in the Baltic Sea in the selected gauge stations were very strong and statistically significant. These results were confirmed by a synchronicity analysis carried out with the help of a copula function. The highest relationship was detected in the case of Lake Resko Przymorskie (correlation coefficient 0.86, synchronicity 75.18%), while the lowest were observed in Lakes Jamno (0.62 and 58.20%, respectively) and Bukowo (0.60 and 56.82%, respectively). The relation strength between maximum water levels of the sea and coastal lakes may increase in the future due to sea level rises caused by climate warming.Coastal lakes are characterized by complex water circulation related to their location at the interface of two "environments", sea and land, and they supply marine waters and river waters from inland areas. Research on coastal lakes in Poland and in the world has covered issues concerning, among other things, the chemistry/quality of water (including its salinity) [7][8][9][10][11][12][13], the development of lakes in the Holocene [14], the trophic status of lakes in the Holocene [15], biodiversity [16][17][18][19][20], sea water intrusions [4,21,22], and ice phenomena [23]. All of these said studies have confirmed the effect of the sea on the aforementioned properties of lakes.Water level fluctuations in lakes have various characteristics and causes. Water level changes, their scale, dynamics, and change tendencies depend on natural [24][25][26] and anthropogenic [27,28] factors [29]. In the case of coastal lakes, more dynamic changes in water levels are observed than in the remaining lakes. This is related to the effect of the Baltic Sea [30][31][32][33][34]. Research on the water level regime in lakes in North Poland has shown that coastal lakes constitute a separate type [35][36][37]. They are lakes with considerable mean annual amplitudes exceeding 100 cm [35], and according to Reference [36], they show a four-period rhythm of seasonal water level variability determined by atmospheric circulation and the hydrodynamic state of the Baltic Sea. In a classification of lakes through val...

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A review on the driving forces of water decline and its impacts on the environment in Poyang Lake, China

Lai

Devlin

2020

Journal of Water and Climate Change

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The recession of water levels of natural lakes and their associated impacts on wetland ecosystems is a serious issue worldwide. Poyang Lake (the largest freshwater lake in China), has experienced a heightened and prolonged water decline since the year 2000, which causes concern for associated ecological impacts. In particular, climate change, operation of the Three Gorges Dam (TGD), and high magnitude sand mining appears to be well-correlated with the occurrence of water decline in Poyang Lake. Though the above factors have been analyzed in previous studies, a comprehensive summary has never been compiled. This paper provides a detailed literary review highlighting the driving forces and possible impacts of the consistent water decline in Poyang Lake. We conclude here that the operation of TGD is a fundamental cause for the lake water decline, aggravated by climate change and sand mining. The water decline has caused a deterioration of water quality, as well as having given rise to a potential threat to the habitat of migratory birds and Yangtze finless porpoises. The paper intends to offer constructive references that can be used in decision-making for effective protection of water resources and lake ecosystems.

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Analysis of the Impacts of Man-Made Features on the Stationarity and Dependence of Monthly Mean Maximum and Minimum Water Levels in the Great Lakes and St. Lawrence River of North America

Cited by 4 publications

References 19 publications

Seasonal structure of water stages on lakes in Northern Poland

Seasonal structure of water stages on lakes in Northern Poland

Probabilistic Assessment of Correlations of Water Levels in Polish Coastal Lakes with Sea Water Level with the Application of Archimedean Copulas

A review on the driving forces of water decline and its impacts on the environment in Poyang Lake, China

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