The snow and rainfall impact on the Verde spring behavior: A statistical approach on hydrodynamic and hydrochemical daily time-series

Chiaudani, Alessandro; Curzio, Diego Di; Rusi, Sergio

doi:10.1016/j.scitotenv.2019.06.433

Cited by 19 publications

(17 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This complex and heterogeneous framework suggests that, when a rainfall event occurs, rainwater reaches the springs through different flowpaths in both unsaturated and saturated zones. Once rainwater reaches the saturated zones, the hydraulic head raises instantaneously and causes a rapid discharge increase [74]. The analysis emphasizes the role played by the structural geological setting, revealing a net demarcation of the dominantly calcareous cores of anticlines, surrounded by the impermeable Marne a Fucoidi belt and containing variably extensive basal aquifers in line with Mastrorillo and Pettita [71].…”

Section: Discussionmentioning

confidence: 81%

Section: Characteristics Of Recession Curve Parameters Karstificationmentioning

confidence: 99%

See 1 more Smart Citation

Groundwater Circulation in Fractured and Karstic Aquifers of the Umbria-Marche Apennine

Tamburini

Menichetti

2020

Water

View full text Add to dashboard Cite

The Umbria-Marche Apennine has a large number of springs that drain water stored in carbonate formations. Spring groundwater constitutes a crucial freshwater resource for many countries, regions, and cities around the world. This study aimed to understand the hydrological mechanisms behind groundwater circulation and their relationship to the structural and stratigraphic settings of specific aquifers. Recession analysis and time series analysis were applied to the daily discharge of six springs monitored over eight years. Both analyses indicated the presence of two types of aquifers: aquifer with unimodal behavior and aquifer with bimodal behavior. The first are characterized by two hydrodynamic sub-regimes, in which fracture networks control the baseflow and conduit networks control the quickflow. In contrast, other springs present only one hydrodynamic sub-regime related to fracture network drainage. Time series analysis confirms the results of recession analysis, showing a large memory effect and a large response time, implying the dominance of the baseflow sub-regime. These results indicate that the Maiolica Formation is characterized by a high degree of fracturation and slight karstification, which control infiltration and percolation, whereas the Calcare Massiccio Formation regulates groundwater circulation in the deeper zones of the aquifer, characterized by a high degree of karstification through moderately developed conduit networks.Water 2020, 12, 1039 2 of 21 linear baseflow recession. Kovács et al. [12] showed that the recession coefficient allows for obtaining important information about aquifer hydraulic parameters and conduit network characteristics. One main advantage of recession curve analysis is that a set of empirical, quantitative parameters attributed to drainage mechanisms can be calculated [15].Analysis of individual recession periods sometimes generates inconsistences related to the complexity of groundwater circulation and the processes acting on the system [16]. Therefore, a master recession curve (MRC) is commonly used for simultaneously analyzing a set of hydrograph recessions at a particular catchment [17][18][19][20][21][22].Malík and Vojtková [23] performed a recession curve analysis to evaluate the karstification degree and the hydrodynamic behavior of an aquifer. With given recession coefficients and initial discharge values, both runoff and partial runoff segments (sub-regimes) can be fully described. In karst hydrogeology, the term "sub-regime" refers to the changing conditions of a groundwater system, its characteristic behavior, or the controlling of natural processes, which usually occur in a regular pattern [24].Apart from recession analysis, univariate and bivariate analyses can also be performed on spring hydrographs. Valuable indirect information regarding karst systems can be obtained by performing a time series analysis [25]. Mangin [26] developed a specific methodology for studying the input-output relationships in karst aquifers, as well as for performing auto-correl...

show abstract

Section: Discussionmentioning

confidence: 81%

Section: Characteristics Of Recession Curve Parameters Karstificationmentioning

confidence: 99%

Groundwater Circulation in Fractured and Karstic Aquifers of the Umbria-Marche Apennine

Tamburini

Menichetti

2020

Water

View full text Add to dashboard Cite

show abstract

“…Many methods are applied to identify karst groundwater systems, such as hydrogeochemical analysis [ 10 ], environmental isotope method [ 11 , 12 , 13 ], time-series analysis [ 14 , 15 ] and artificial tracer tests [ 16 , 17 ]. Tracer tests provide the most effective means for identifying the point-to-point connections between flow inputs (sinkholes or sinking streams) and outputs (springs).Tracer test can not only identify the flow path of karst groundwater, but also can calculate the geometric parameters (transport velocities and dispersion) of groundwater flow, which is helpful to analyze the internal structure of karst aquifers [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

Responses of Spring Discharge to Different Rainfall Events for Single-Conduit Karst Aquifers in Western Hunan Province, China

Chang

Wan

Tan

et al. 2021

IJERPH

View full text Add to dashboard Cite

It is a challenge to describe the hydrogeological characteristics of karst aquifers due to the complex structure with extremely high heterogeneity. As the response of karst aquifers to rainfall events, spring discharge variations after precipitation can be used to identify the internal structure of karst systems. In this study, responses of spring discharge to different kinds of precipitations are investigated by continuously monitoring precipitation and karst spring flow at a single-conduit karst aquifer in western Hunan province, China. Recession curves were used to analyze hydrodynamic behaviors and separate recession stages. The results show that the shape of the recession curve was changed under different rainfall conditions. Recession processes can be divided in to three recession stages under heavy rain conditions due to water drainage mainly from conduits, fracture, and matrix at each stage, but only one recession stage representing drainage mainly from matrix in the case of light rain. With the change in amount and intensity of precipitation, the calculated recession coefficient at each stage changes in an order of magnitude. The influence of precipitation on the recharge coefficient and the discharge composition at each recession are discussed, and then the conceptual model diagram of water filling and releasing in the single-conduit karst aquifers is concluded. The findings provide more insight understand on hydraulic behaviors of karst spring under different types of rainfall events and provide support for water resource management in karst regions.

show abstract

“…Indeed, a minor increase in industrial pollution sources was reported over the period from 2012 to 2016, with a concurrent decrease in farming activities [52]. EC showed an increasing trend during the study period, and the most significant variation with precipitation, a decrease in the flood years, and an increase in the drought years, which represented the effects of dilution and concentration, respectively [53].…”

Section: Inter-annual Variations In Water Quality Parameters and Their Trendsmentioning

confidence: 99%

Inter-Annual and Seasonal Variations of Water Quality and Trophic Status of a Reservoir with Fluctuating Monsoon Precipitation

Moon

Kim

2021

IJERPH

View full text Add to dashboard Cite

Long-term evaluation from 2000 to 2020 of a temperate reservoir indicated that water quality and trophic status were not critically controlled by the inter-annual dynamics of monsoon precipitation. The fluctuation of annual concentrations of TP, TSS, and EC did not always correlate with the variation of precipitation. BOD and COD demonstrated monotonically increasing trends with Sen’s slope of 0.02 and 0.01, respectively, while Chl-a manifested a decreasing trend (slope = −0.23). The increases of different magnitudes in the levels of TP, TSS, and Chl-a in the monsoon and the early post-monsoon periods were observed in the drought, flood, and normal years. The drought years showed distinct seasonal variations in many parameters, while those in the flood and the normal years were very similar. Pearson correlation and empirical regression analyses resulted in weaker correlation between water quality and hydrological parameters than other reservoirs, which, along with low impact of precipitation, was attributed to the low drainage ratio (28.8) of the study area. BOD/COD ratios were higher than 0.5 in the reservoir, indicating the presence of a significant fraction of biodegradable organic matter. The ratio increased in the longitudinal flow direction (>50% in the drought years), implying the possibility of autochthonous sources of organic matter. TSID evaluation resulted in variation of limiting factors not related to the fluctuation of annual precipitation. The loadings of the significant principal components were very similar among the different precipitation groups, supporting the other findings that annual precipitation governed by monsoon intensity would not solely control the water quality dynamics of the study area.

show abstract

The snow and rainfall impact on the Verde spring behavior: A statistical approach on hydrodynamic and hydrochemical daily time-series

Cited by 19 publications

References 53 publications

Groundwater Circulation in Fractured and Karstic Aquifers of the Umbria-Marche Apennine

Groundwater Circulation in Fractured and Karstic Aquifers of the Umbria-Marche Apennine

Responses of Spring Discharge to Different Rainfall Events for Single-Conduit Karst Aquifers in Western Hunan Province, China

Inter-Annual and Seasonal Variations of Water Quality and Trophic Status of a Reservoir with Fluctuating Monsoon Precipitation

Contact Info

Product

Resources

About