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Estimating Phosphorus in rivers of Central Sweden using Landsat TM data
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för naturgeografi och kvartärgeologi (INK).
2012 (engelsk)Independent thesis Basic level (university diploma), 10 poäng / 15 hpOppgave
Abstract [en]

Phosphorus flowing via rivers into the Baltic Sea is a major source of nutrients, and in some cases the limiting factor for the growth of algae which causes the phenomenon known as eutrophication. Remote sensing of phosphorus, here using Landsat TM-data, can help to give a better understanding of the process of eutrophication. Since Landsat TM-data is used, this could form a basis for further spatio-temporal analysis in the Baltic Sea region. A method originally described and previously applied for a Chinese river is here transferred and applied to three different rivers flowing into the Baltic Sea. The results show that by measuring the proxy variables of Secchi Depth and Chloryphyll-a the remote sensing model is able to explain 41% of the variance in total- phosphorus for the rivers Dalälven, Norrström and Gavleån without any consideration taken to CDOM, turbidity or other local features.

sted, utgiver, år, opplag, sider
2012. , s. 28
Emneord [en]
Remote Sensing, Phosphorus, Eutrophication, Rivers, Baltic Sea
HSV kategori
Identifikatorer
URN: urn:nbn:se:su:diva-77693OAI: oai:DiVA.org:su-77693DiVA, id: diva2:534987
Presentation
2012-06-05, U29, Stockholm, 01:03 (engelsk)
Uppsök
Life Earth Science
Veileder
Examiner
Tilgjengelig fra: 2012-07-27 Laget: 2012-06-19 Sist oppdatert: 2012-07-27bibliografisk kontrollert

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