Spatio-temporal variation in some physical and chemical parameters over a 25-year period in the catchment of the river Adour

Brunet, R.-C.; Astin, K. Brian

doi:10.1016/s0022-1694(99)00072-4

Cited by 20 publications

(11 citation statements)

References 15 publications

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“…These variations are part of a larger pattern that has been observed over a 25-year period T1 T2 T3 T4 T6 T7 T8 T9 ( Fig. 2B), (Brunet and Astin, 1999) where the period from 1971 to 1990 shows mean retention in the floodplains of the lower Adour between S4 St Vincent de Paul and S5 Tercis (Fig. 1B): this is a very active zone for the retention of sediments, with a mean annual retention of 12%, during this period.…”

Section: Resultsmentioning

confidence: 61%

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A comparison of sediment deposition in two adjacent floodplains of the River Adour in southwest France

Brunet¹,

Astin

2008

Journal of Environmental Management

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Section: Resultsmentioning

confidence: 61%

“…2A andB) has been related to the key hydroclimatic factors of precipitation, evapotranspiration, and temperature functioning within the watershed (Brunet and Astin, 1999). These variations within the Adour catchment have produced alternating dry and wet episodes during this 25-year period.…”

Section: Discussionmentioning

confidence: 99%

A comparison of sediment deposition in two adjacent floodplains of the River Adour in southwest France

Brunet¹,

Astin

2008

Journal of Environmental Management

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“…The Basque and Landes countries welcome a high number of tourists, particularly on the coastal area during the summer period. The Adour estuary is thus under a strong anthropogenic pressure due to urban, agricultural and industrial activities (Arleny et al, 2007;Brunet and Astin, 1999).…”

Section: Insert Fig 1 Herementioning

confidence: 99%

Monitoring spatio-temporal variability of the Adour River turbid plume (Bay of Biscay, France) with MODIS 250-m imagery

Petus

Marieu

Novoa

et al. 2014

Continental Shelf Research

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractIncreased loads of land-based pollutants through river plumes are a major threat to the coastal water quality, ecosystems and sanitary heath. Identifying the coastal areas impacted by potentially polluted freshwaters is necessary to inform management policies and prevent degradation of the coastal environment. This study presents the first monitoring of the Adour River turbid plume (south-eastern Bay of Biscay, France) using multi-annual MODIS data Satellite data are processed using a regional algorithm that allows quantifying and mapping suspended matter in coastal waters. The results are used to investigate the spatial and temporal variability of the Adour River turbid plume and to identify the risk of exposure of coastal ecosystems to the turbid plume waters. Changes in river plume orientation and extent as well as suspended matter concentration rates discharged through the river are correlated to the main hydro-climatic forcings acting in the south-eastern Bay of Biscay. The Adour River turbid plume is shown to be a highly reactive system mainly controlled by the river discharge rates and modulated by the wind changes. Despite the relatively small size of the Adour River, the Adour River turbid plume can have a non-negligible impact on the water quality of the southern Bay of Biscay and the MSM and associated contaminant/nutrients transported within the Adour turbid river plume have the potential to be disseminated far away along the northern shoreline or offshore. The main areas of influence of the river plume are defined over multi-annual (3 years) and seasonal periods. The results presented in this study show the potential of 250-m MODIS images to monitor small river plumes systems and support management and assessment of the water quality in the south-eastern Bay of Biscay.Key words: water quality, River plume, MODIS-Aqua; mineral suspended matters, spatiotemporal variability, Adour estuary. IntroductionAssessment of water quality has become a major issue worldwide and is illustrated in Europe by the implementation of the Water Framework, the Quality of Bathing Waters and the (MSFD, 2008/56/EC), respectively. These directives mainly focus on preventing the degradation of aquatic ecosystems due to anthropogenic pressures. The evaluation of the water quality status is based on the measurement of relevant water quality parameters. Among biological parameters are the composition, abundance and biomass of phytoplankton, the frequency and intensity of blooms and their influences on the water turbidity , Ferreira et al., 2011. Phy...

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“…wavelet spectrum analyses) of water quality parameters of similar study sites (Brunet and Astin 1999, Hatvani et al 2014a, Labat et al 2005, Magyar et al 2013b. If this period is in any degree missing, it is considered to be a periodicity anomaly (PA), which may indicate a drastic change in the environment, one which is likely to have been induced by anthropogenic activity.…”

Section: Periodicity and Cluster Analysesmentioning

confidence: 99%

Assessment of the interaction between surface- and groundwater after the diversion of the inner delta of the River Danube (Hungary) using multivariate statistics

et al. 2018

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Anthropogenic activity such as damming or diversion of rivers cause extensive disturbance to ecosystems, as well as the interaction between surface water and groundwater.Following the diversion in 1992 of the River Danube (NW Hungary) and the construction of a water barrage system, the level of shallow groundwater dropped and altered the connection between surface water and groundwater. This paper outlines the changes in the interaction of surface water and shallow groundwater and other related environmental consequences caused by an 80% decrease in runoff resulting from this intervention. The time series (1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003)(2004) of 27 water quality variables measured from three surface and three subsurface sampling sites Prerpint of ATHROPOCENE 22, pp. 51-65 doi: https://doi.org/10.1016/j.ancene.2018.05.002 2 were analyzed using periodicity, hierarchical cluster-and principal component analyses. It was found that: (i) the degree of riverbed clogging increased due to diminished runoff; this clogging blocked interaction between surface water and groundwater at certain sampling sites; (ii) extreme floods were capable of resetting this situation and changing the flow currents to differing degrees in the surface/sub-surface waters. These findings enabled a better understanding of the changes in water quality primarily attributable to the diversion of the river (the change in water level, riverbed clogging etc.). The changed hydrological setting of the subject area became very similar to that which might be expected to evolve due to climate change around the world. Thus, the study not only serves as an example for the processes evolving (e.g. riverbed clogging) in similarly modified river sections, but to those as well, which are expected to suffer from aridification.

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Spatio-temporal variation in some physical and chemical parameters over a 25-year period in the catchment of the river Adour

Cited by 20 publications

References 15 publications

A comparison of sediment deposition in two adjacent floodplains of the River Adour in southwest France

A comparison of sediment deposition in two adjacent floodplains of the River Adour in southwest France

Monitoring spatio-temporal variability of the Adour River turbid plume (Bay of Biscay, France) with MODIS 250-m imagery

Assessment of the interaction between surface- and groundwater after the diversion of the inner delta of the River Danube (Hungary) using multivariate statistics

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