ÖVERSVÄMNING OCH KUSTEROSION VID TYLÖSAND- MÖJLIGA KONSEKVENSER AV VÄXTHUSEFFEKTEN / Inundation and Coastal Erosion at Tylösand - Possible Consequences of the Greenhouse Effect
Most climatologists recognize that emissions of carbon dioxide, methane, and other so called greenhouse gases will result in a gradually increasing mean global temperature. The increase in temperature will, in turn, lead to rising sea levels, caused by thermal expansion of the oceans and melting of arctic and antarctic ice caps. According to researchers, a sea level rise of 25 to 50 cm is likely to occur during the next 40 to 50 years. Climatic changes will most likely also result in higher and more frequent extreme water levels. As a result of these changes, the threat of coastal erosion and flooding will increase.
With the objective to quantify possible effects along a specific coastal area a study, mainly based upon existing data, was performed for the Tylösand area near Halmstad. Calculations showed that a sea level rise of 0.25 m in combination with highest high water level resulted in a retreat of the waterline to 60-100 m behind the present shoreline. The corresponding retreat following a sea level rise of 1 m was calculated to reach 100-210m.