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Service Description: Streams are important parts of our ecosystem and crucial water sources. Knowing composition of stream waters helps to understand where it came from and how it can be used.
Geochemists test stream water samples using different methods to see the spread of elements and ions across the country. 16 different elements and properties were mapped on a 1:100,000 scale (1cm on the map relates to a distance of 1km).
A total of 6836 stream water samples were collected between 2011 and 2017. Samples were taken from evenly spread smaller or medium sized streams.
The data measures changes in the strength of a number of elements in two ways. The types of elements can point to what rocks the water had contact with. Their parent material is called as a source rock. Also tested were conductivity, which tells us the amount of dissolved ions are in the stream water, pH, which shows how acid or basic the waters are, alkalinity which is tells us how hard the water is and major ions which tells us what major dissolved salts are present in the waters.
This is a raster dataset. Data is presented in form of an image and colour scales are used to show the different strengths of the elements. Raster data stores information in a cell-based manner and consists of a matrix of cells (or pixels) organised into rows and columns. The format of the raster is a grid. The grid cell size is 250 m which means that each cell (pixel) represents an area on the ground that is 250 meters across. The grid also contains location information.
The Tellus survey is a national airborne geophysical and ground geochemical mapping project managed by the Geological Survey Ireland.
IE_GSI_Geochemistry_Stream_Water_W_250m_IE26_ITM_GRID
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Description: Streams are important parts of our ecosystem and crucial water sources. Knowing composition of stream waters helps to understand where it came from and how it can be used.Geochemists test stream water samples using different methods to see the spread of elements and ions across the country. 16 different elements and properties were mapped on a 1:100,000 scale (1cm on the map relates to a distance of 1km). A total of 6836 stream water samples were collected between 2011 and 2017. Samples were taken from evenly spread smaller or medium sized streams. The data measures changes in the strength of a number of elements in two ways. The types of elements can point to what rocks the water had contact with. Their parent material is called as a source rock. Also tested were conductivity, which tells us the amount of dissolved ions are in the stream water, pH, which shows how acid or basic the waters are, alkalinity which is tells us how hard the water is and major ions which tells us what major dissolved salts are present in the waters. This is a raster dataset. Data is presented in form of an image and colour scales are used to show the different strengths of the elements. Raster data stores information in a cell-based manner and consists of a matrix of cells (or pixels) organised into rows and columns. The format of the raster is a grid. The grid cell size is 250 m which means that each cell (pixel) represents an area on the ground that is 250 meters across. The grid also contains location information. The Tellus survey is a national airborne geophysical and ground geochemical mapping project managed by the Geological Survey Ireland.
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Copyright Text: Geological Survey Ireland
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Document Info:
Title: IE GSI Geochemistry Stream Water 'W' 250m Ireland (ROI) ITM GRID
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Comments: Streams are important parts of our ecosystem and crucial water sources. Knowing composition of stream waters helps to understand where it came from and how it can be used.Geochemists test stream water samples using different methods to see the spread of elements and ions across the country. 16 different elements and properties were mapped on a 1:100,000 scale (1cm on the map relates to a distance of 1km). A total of 6836 stream water samples were collected between 2011 and 2017. Samples were taken from evenly spread smaller or medium sized streams. The data measures changes in the strength of a number of elements in two ways. The types of elements can point to what rocks the water had contact with. Their parent material is called as a source rock. Also tested were conductivity, which tells us the amount of dissolved ions are in the stream water, pH, which shows how acid or basic the waters are, alkalinity which is tells us how hard the water is and major ions which tells us what major dissolved salts are present in the waters. This is a raster dataset. Data is presented in form of an image and colour scales are used to show the different strengths of the elements. Raster data stores information in a cell-based manner and consists of a matrix of cells (or pixels) organised into rows and columns. The format of the raster is a grid. The grid cell size is 250 m which means that each cell (pixel) represents an area on the ground that is 250 meters across. The grid also contains location information. The Tellus survey is a national airborne geophysical and ground geochemical mapping project managed by the Geological Survey Ireland.
Subject: Stream water samples were taken from the North-West Ireland and were tested for their chemical make-up. This allows us to map water quality and learn about what rocks they flow through.
Knowing about the chemistry of stream waters is important for many people and industries. Farmers need to know the chemistry of surface water to understand the quality of water sources and its impact on soil and crops. This helps them decide if they should use water purification or not. This can improve the health of their animals and quality of their crops. Rocks can affect the quality of drinking water. Quality of water is important for many industries and individuals such as inland fisheries or farmers. If water is affected, it may need to be treated before it can be drunk by people or animals. The chemistry of surface waters can also help people looking for minerals (materials taken from the ground used for things we need from mobile phones to the stones used to build roads and houses).
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Keywords: Ireland,IE/GSI,Geology,Geochemistry,Stream,Water,Soil
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