scholarly journals The Feasibility Study for Development of Groundwater Resources by Subsurface Dam for Prevention of Salt Water Intrusion

1996 ◽  
Vol 40 ◽  
pp. 51-56
Author(s):  
Kenji JINNO ◽  
Ying RU ◽  
Kei NAKAGAWA ◽  
Tosao HOSOKAWA ◽  
Kaname TAJIRI ◽  
...  
Keyword(s):  
Feasibility Study ◽  
Salt Water ◽  
Groundwater Resources ◽  
Salt Water Intrusion ◽  
Water Intrusion ◽  
Subsurface Dam

scholarly journals Freshening of salinized groundwater in Gdańsk Quaternary aquifer

2018 ◽  
Vol 54 ◽  
pp. 00025
Author(s):  
Maria Przewłócka ◽  
Beata Jaworska-Szulc ◽  
Bohdan Kozerski ◽  
Małgorzata Pruszkowska-Caceres ◽  
Adam Szymkiewicz ◽  
...  
Keyword(s):  
Salt Water ◽  
Groundwater Resources ◽  
Chloride Concentration ◽  
Shallow Aquifer ◽  
Salt Water Intrusion ◽  
Maximum Output ◽  
Gulf Of Gdańsk ◽  
Quaternary Aquifer ◽  
Water Intrusion ◽  
Gulf Of Gdansk

The main Quaternary aquifer in the Gdańsk region connects directly with salt waters of the Martwa Wisła River and the Gulf of Gdańsk. This aquifer has been used for many years by large municipal and industrial intakes located on the marine lowlands, with maximum output 6236 m3/h in 1985. Owing to an intensive exploitation, groundwater in the area of the Old Gdańsk has been salinized by intrusion of salt water from the Martwa Wisła River. Concentration of chlorides in some wells reached 2000-3000 mgCl/dm3, leading to degradation of groundwater resources in this area. As a consequence the “Grodza Kamienna” groundwater intake had to be put out of operation. Salt water intrusion from the Gulf of Gdańsk was provoked in 1970s and 1980s by overexploitation of groundwater resources by three municipal intakes situated on the marine terrace. Concentration of chlorides in some piezometers of the “Czarny Dwór” groundwater intake amounted to 700 – 1000 mgCl/dm3, however in the pumping wells of the intake it never exceeded the drinking water standards. In 1990s groundwater pumping rates in both areas were lowered. As a result, the chloride concentration decreased and the resources started to recover. Current observations prove that groundwater of the main Quaternary aquifer is freshening and salt water intrusion has stopped. However, elevated concentrations of chlorides are observed in the shallow aquifer, due to anthropopressure.

Approximation for Salt-Water Intrusion in Unconfined Coastal Aquifer

Ground Water ◽  
1980 ◽  
Vol 18 (2) ◽  
pp. 147-151 ◽  
Author(s):  
B. K. Panigrahi ◽  
A. Das Gupta ◽  
A. Arbhabhirama
Keyword(s):  
Coastal Aquifer ◽  
Salt Water ◽  
Salt Water Intrusion ◽  
Water Intrusion

scholarly journals GIS analysis of effects of future Baltic Sea level rise on the island of Gotland, Sweden

2016 ◽  
Author(s):  
Karin Ebert ◽  
Karin Ekstedt ◽  
Jerker Jarsjö
Keyword(s):  
Baltic Sea ◽  
Sea Level Rise ◽  
Sea Level ◽  
Coastal Aquifers ◽  
Salt Water ◽  
Global Perspective ◽  
Salt Water Intrusion ◽  
The Baltic Sea ◽  
Water Intrusion ◽  
The Baltic

Abstract. Future sea level rise as a consequence of global warming will affect the world's coastal regions. Even though the pace of sea level rise is not clear, the consequences will be severe and global. Commonly the effects of future sea level rise are investigated for relatively vulnerable development countries; however, a whole range of varying regions need to be considered in order to improve the understanding of global consequences. In this paper we investigate consequences of future sea level rise along the coast of the Baltic Sea island of Gotland, Sweden, with the aim to fill knowledge gaps regarding comparatively well-suited areas in non-development countries. We study both the quantity of loss of infrastructure, cultural and natural values for the case of a two metre sea level rise of the Baltic Sea, and the effects of climate change on seawater intrusion in coastal aquifers, causing the indirect effect of salt water intrusion in wells. We conduct a multi-criteria risk analysis by using Lidar data on land elevation and GIS-vulnerability mapping, which gives formerly unimaginable precision in the application of distance and elevation parameters. We find that in case of a 2 m sea level rise, 3 % of the land area of Gotland, corresponding to 99 km2, will be inundated. The features most strongly affected are items of touristic or nature values, including camping places, shore meadows, sea stack areas, and endangered plants and species habitats. In total, 231 out of 7354 wells will be directly inundated, and the number of wells in the high-risk zone for saltwater intrusion in wells will increase considerably. Some values will be irreversibly lost due to e.g. inundation of sea stacks and the passing of tipping points for sea water intrusion into coastal aquifers; others might simply be moved further inland, but this requires considerable economic means and prioritization. With nature tourism being one of the main income sources of Gotland, monitoring and planning is required to meet the changes. Seeing Gotland in a global perspective, this island shows that holistic multi-feature studies of future consequences of sea level rise are required, to identify overall consequences for individual regions.

Sign in / Sign up

Export Citation Format

Share Document