Advanced

A contribution to the knowledge of Fårö’s hydrogeology

Thulin Olander, Henric LU (2015) In Dissertations in Geology at Lund University GEOR02 20151
Department of Geology
Abstract
Fårö, Sweden´s ninth largest island, is suffering from poor groundwater management. A rampant development within tourism on Fårö to uphold its socioeconomic status has led to insufficient water quality and quantity in the municipal water supply. In order to support the progress of Fårö´s water supply, a contribution to the know-ledge of its hydrogeology is presented.
Recent evolution in airborne geophysics has culminated in SkyTEM, a helicopter electromagnetic system speci-fically developed for hydrogeological surveys. For the first time after an initial pilot study, the SkyTEM system is used on a large scale in Sweden. Four areas on Gotland were investigated by the Geological Survey of Sweden, SGU, and one of these areas was Fårö. By... (More)
Fårö, Sweden´s ninth largest island, is suffering from poor groundwater management. A rampant development within tourism on Fårö to uphold its socioeconomic status has led to insufficient water quality and quantity in the municipal water supply. In order to support the progress of Fårö´s water supply, a contribution to the know-ledge of its hydrogeology is presented.
Recent evolution in airborne geophysics has culminated in SkyTEM, a helicopter electromagnetic system speci-fically developed for hydrogeological surveys. For the first time after an initial pilot study, the SkyTEM system is used on a large scale in Sweden. Four areas on Gotland were investigated by the Geological Survey of Sweden, SGU, and one of these areas was Fårö. By combining data collected with SkyTEM with previously collected data and also newly acquired field measurements, new light has been shed upon Fårö´s hydrogeology. The results reveal promising potential and two previously unexploited areas on Fårö have been highlighted to have favorable hyd-rogeological conditions. Both areas are currently used only for private water supply and have sizes of 2 and 20 km2 respectively. Additionally, the boundary between fresh and saline groundwater is discussed and an updated inter-pretation following the work of Tullström (1954) is presented. (Less)
Popular Abstract (Swedish)
Sveriges nionde största ö, Fårö, besöks årligen av över 300 000 turister. Detta enorma flöde skapar behov av infrastruktur som är svåra att tillgodose. Dricksvattentillgången har till följd av detta blivit lidande och är i dagsläget en begränsande faktor för den pågående exploateringen. En för Sverige avvikande geologisk uppbyggnad ligger dessutom till grund för bristfällig kunskap om Fårös tillgångar av grundvatten, en råvara som normalt sett tillgodoser över hälften av Sveriges dricksvattenbehov. För att undersöka förutsättningarna av att lösa dricksvattenproblematiken med hjälp av ett ökat uttag av grundvatten så presenteras här en ny bedömning av Fårös grundvattentillgångar. Bedömningen baseras på ny data som har insamlats med hjälp av... (More)
Sveriges nionde största ö, Fårö, besöks årligen av över 300 000 turister. Detta enorma flöde skapar behov av infrastruktur som är svåra att tillgodose. Dricksvattentillgången har till följd av detta blivit lidande och är i dagsläget en begränsande faktor för den pågående exploateringen. En för Sverige avvikande geologisk uppbyggnad ligger dessutom till grund för bristfällig kunskap om Fårös tillgångar av grundvatten, en råvara som normalt sett tillgodoser över hälften av Sveriges dricksvattenbehov. För att undersöka förutsättningarna av att lösa dricksvattenproblematiken med hjälp av ett ökat uttag av grundvatten så presenteras här en ny bedömning av Fårös grundvattentillgångar. Bedömningen baseras på ny data som har insamlats med hjälp av helikopterburen apperatur, vilket möjliggjort en insamling av data med säkerställt god kvalite över en stor yta. Slutsatsen av undersökningen är att två områden pekas ut att ha större än tidigare kända tillgångar av grundvatten, vilket möjliggör ett ökat uttag av grundvatten i framtiden. (Less)
Please use this url to cite or link to this publication:
author
Thulin Olander, Henric LU
supervisor
organization
course
GEOR02 20151
year
type
H2 - Master's Degree (Two Years)
subject
keywords
Fårö, Gotland, groundwater, water supply, Silurian, hydrogeology, SkyTEM, RMT, geophysics
publication/series
Dissertations in Geology at Lund University
report number
427
language
English
additional info
External supervisor: Peter Dahlqvist, Geological Survey of Sweden
id
5157741
date added to LUP
2015-03-19 14:41:01
date last changed
2015-04-24 13:34:51
@misc{5157741,
  abstract     = {Fårö, Sweden´s ninth largest island, is suffering from poor groundwater management. A rampant development within tourism on Fårö to uphold its socioeconomic status has led to insufficient water quality and quantity in the municipal water supply. In order to support the progress of Fårö´s water supply, a contribution to the know-ledge of its hydrogeology is presented.
Recent evolution in airborne geophysics has culminated in SkyTEM, a helicopter electromagnetic system speci-fically developed for hydrogeological surveys. For the first time after an initial pilot study, the SkyTEM system is used on a large scale in Sweden. Four areas on Gotland were investigated by the Geological Survey of Sweden, SGU, and one of these areas was Fårö. By combining data collected with SkyTEM with previously collected data and also newly acquired field measurements, new light has been shed upon Fårö´s hydrogeology. The results reveal promising potential and two previously unexploited areas on Fårö have been highlighted to have favorable hyd-rogeological conditions. Both areas are currently used only for private water supply and have sizes of 2 and 20 km2 respectively. Additionally, the boundary between fresh and saline groundwater is discussed and an updated inter-pretation following the work of Tullström (1954) is presented.},
  author       = {Thulin Olander, Henric},
  keyword      = {Fårö,Gotland,groundwater,water supply,Silurian,hydrogeology,SkyTEM,RMT,geophysics},
  language     = {eng},
  note         = {Student Paper},
  series       = {Dissertations in Geology at Lund University},
  title        = {A contribution to the knowledge of Fårö’s hydrogeology},
  year         = {2015},
}