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Drawdown Distribution During Recovery around a Large Diameter Well
Drawdown Distribution Recovery Large Diameter Well
2009/10/26
An analytical solution is presented for the drawdown distribution in a large
diameter well during recovery. It takes into consideration the well storage. A
set of type curves are given to determine ...
DEVELOPMENT OF AN AQUIFER, STORAGE AND RECOVERY (ASR) SITE SELECTION SUITABILITY INDEX IN SUPPORT OF THE COMPREHENSIVE EVERGLADES RESTORATION PROJECT
Comprehensive Everglades Restoration Plan Geographic Information Systems Aquifer, Storage and Recovery
2009/10/12
In support of the Comprehensive Everglades Restoration Plan (CERP), the U.S. Army Corps of Engineers, U.S. Fish & Wildlife Service, South Florida Water Management District, and others, are currently e...
Norwegian lakes show widespread recovery from acidification：results from national surveys of lakewater chemistry 1986-1997
Acid Neutralising Capacity Sulphate concentrations lakes
2009/6/5
Surveys of 485 lakes in Norway conducted in 1986 and again in 1995 reveal widespread chemical recovery from acidification. Sulphate concentrations in lakes have decreased by 40% in acidified areas in ...
A regional application of the MAGIC model in Wales：calibration and assessment of future recovery using a Monte-Carlo approach
Wales Model of Acidification of Groundwater In Catchment Monte-Carlo approach
2009/6/5
A survey and resurvey of 77 headwater streams in Wales provides an opportunity for assessing changes in streamwater chemistry in the region. The Model of Acidification of Groundwater In Catchment (MAG...
Modelling acidification, recovery and target loads for headwater catchments in Nova Scotia, Canada
time averaged rainfall hydrologic thresholds infiltration excess
2009/5/7
This paper investigates the effects of using non-linear, high resolution rainfall, compared to time averaged rainfall on the triggering of hydrologic thresholds and therefore model predictions of infi...
Predicting long-term recovery of a strongly acidified stream using MAGIC and climate models (Litavka, Czech Republic)
acidified stream acid atmospheric deposition
2009/4/29
Two branches forming the headwaters of a stream in the Czech Republic were studied. Both streams have similar catchment characteristics and historical deposition; however one is rain-fed and strongly ...
The impacts of future climate change and sulphur emission reductions on acidification recovery at Plastic Lake, Ontario
climate change Plastic Lake sulphur emission
2009/4/29
Climate-induced drought events have a significant influence on sulphate export from forested catchments in central Ontario, subsequently delaying the recovery of surface waters from acidification. In ...
Recovery from episodic acidification delayed by drought and high sea salt deposition
sea salt deposition episodic acidification
2009/4/29
For the prediction of episodic acidification large uncertainties are connected to climatic variability and its effect on drought conditions and sea-salt episodes. In this study data on 342 hydrologic...
The decreasing importance of acidification episodes with recovery from acidification：an analysis of the 30-year record from Birkenes, Norway
streamwater chemistry acid episodes
2009/4/29
The 30-year record 1975–2004 of weekly samples of streamwater chemistry from Birkenes, Norway, shows 106 acid episodes below the threshold of ANC−50 µeq l−1. The frequency, severity ...
Role of climate change in recovery of acidified surface waters
climate change surface waters
2009/4/29
Surface waters in Europe and North America have begun to recover in response to decreases in emissions of acidifying pollutants to the atmosphere. Variations in climate influence chemical and biologic...
Land use influences on acidification and recovery of freshwaters in Galloway, south-west Scotland
acidification afforestation deposition
2009/3/24
The long term response of surface waters to changes in sulphur deposition and afforestation is investigated for three upland river systems in the Galloway region of south-west Scotland. From 1984-1999...
Recovery from acidification of lochs in Galloway, south-west Scotland, UK: 1979-1998
acidification recovery Galloway
2009/3/24
The Galloway region of south-west Scotland has historically been subject to long-term deposition of acidic precipitation which has resulted in acidification of soils and surface waters and subsequent ...
Chemical trends at lakes and streams in the UK Acid Waters Monitoring Network, 1988-2000: Evidence for recent recovery at a national scale
acidification recovery long-term trends climate
2009/3/24
A detailed trend analysis of 12 years of data (1988-2000) for 22 surface waters in acid-sensitive regions of the United Kingdom, in which individual site data have been combined to identify national-s...
Long-term changes in acidification and recovery at nine calibrated catchments in Norway, Sweden and Finland
acidification recovery Scandinavia
2009/3/23
International agreements to reduce the emissions of acidifying pollutants have resulted in major changes in deposition of sulphur and nitrogen in southern Scandinavia over the past 25 years. Long-term...
Recovery from acidification of lakes in Finland, Norway and Sweden 1990–1999
Nordic countries sulphur deposition
2009/3/23
Sulphate deposition has decreased by about 60% in the Nordic countries since the early 1980s. Nitrogen deposition has been roughly constant during the past 20 years, with only a minor decrease in the ...