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Statements

Subject Item
dbr:Sediment_Profile_Imagery
rdf:type
dbo:TopicalConcept
rdfs:label
Sediment Profile Imagery
rdfs:comment
Sediment Profile Imagery (SPI) is an underwater technique for photographing the interface between the seabed and the overlying water. The technique is used to measure or estimate biological, chemical, and physical processes occurring in the first few centimetres of sediment, pore water, and the important benthic boundary layer of water. Time-lapse imaging (tSPI) is used to examine biological activity over natural cycles, like tides and daylight or anthropogenic variables like feeding loads in aquaculture. SPI systems cost between tens and hundreds of thousands of dollars and weigh between 20 and 400 kilograms. Traditional SPI units can be effectively used to explore continental shelf and abyssal depths. Recently developed SPI-Scan or rSPI (rotational SPI) systems can now also be used to in
foaf:depiction
n16:SPIScanTrials.jpg n16:SPIScanSample1.jpg n16:SPIScanSample2.jpg n16:Chemoclines.png n16:SPISCAN.jpg n16:SPIScanDeploy.jpg
dcterms:subject
dbc:Oceanography dbc:Fisheries_science
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14917968
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1054204927
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dbr:Estuary n6:SPIScanTrials.jpg dbr:Food-web n6:SPISCAN.jpg n6:SPIScanDeploy.jpg n6:SPIScanSample1.jpg n6:SPIScanSample2.jpg dbr:Time-lapse dbr:Benthic dbc:Oceanography dbr:Data dbr:Abyssal dbr:Seabed dbr:Sediment dbc:Fisheries_science dbr:Sediment-water_interface dbr:Aquaculture dbr:Marine_(ocean) dbr:Photography dbr:Oxic n6:Chemoclines.png dbr:Human_impact_on_the_environment dbr:Continental_shelf dbr:Charge-coupled_device dbr:Groundwater
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n13:bshome.htm n18:Germano-et-al-OMBAR-2011-review-paper-colour-.pdf n19:bshome.htm
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n16:Chemoclines.png?width=300
dbo:abstract
Sediment Profile Imagery (SPI) is an underwater technique for photographing the interface between the seabed and the overlying water. The technique is used to measure or estimate biological, chemical, and physical processes occurring in the first few centimetres of sediment, pore water, and the important benthic boundary layer of water. Time-lapse imaging (tSPI) is used to examine biological activity over natural cycles, like tides and daylight or anthropogenic variables like feeding loads in aquaculture. SPI systems cost between tens and hundreds of thousands of dollars and weigh between 20 and 400 kilograms. Traditional SPI units can be effectively used to explore continental shelf and abyssal depths. Recently developed SPI-Scan or rSPI (rotational SPI) systems can now also be used to inexpensively investigate shallow (<50m) freshwater, estuarine, and marine systems.
gold:hypernym
dbr:Technique
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