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Staufen im Breisgau
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Staufen im Breisgau
Staufen im Breisgau (German pronunciation: [ˈʃtaʊfn̩ ʔɪm ˈbʁaɪsɡaʊ], lit. 'Staufen in the Breisgau'; High Alemannic: Staufe im Brisgau) is a German town in the Breisgau-Hochschwarzwald district of Baden-Württemberg. It had a population of approximately 8,300 in 2019.
The city of Staufen im Breisgau lies in the district of Breisgau-Hochschwarzwald in the German state of Baden-Württemberg. Staufen has approximately 7,700 inhabitants and forms, together with the community of Münstertal, Black Forest, a community administrative unit.[citation needed]
It is noted in history and culture for its association with Faust who, according to one source, died in or near Staufen around 1540.
Staufen lies at the foot of the Black Forest at the exit from the Münstertal. The Black Forest valley of Neumagen goes here directly over into the Rhine plain. The piedmont of the Black Forest is less distinct. North of the valley exit, the steeply rising old castle ruins dominates; to the southwest begins the hilly landscape of the Markgräflerland. Staufen lies on the border between two natural and economic areas: the Rhine plain up to the piedmont with its cultivation of grain, vineyards and vegetables; and the Black Forest, with its cattle and wood, and, until the 19th century, silver mines.[citation needed]
Since 2008, the centre of the city has reported to have risen some 12 centimetres (4.7 in), after initially sinking a few millimeters. This has caused considerable damage to buildings in the city centre, including the historical town hall.
The cause for this geological change has been identified as a drilling operation conducted in the summer and autumn of 2007 to provide geothermal heating to the city hall. The drilling perforated an anhydrite layer and caused high-pressure groundwater to come into contact with the anhydrite, which then began to expand.
By 2010, some sections of town had risen by 30 centimetres (12 in). In July 2013, no end to the rising process was in sight.
Data from the TerraSAR-X radar satellite before and after the changes have confirmed the localised nature of the situation. "A geochemical process called anhydrite swelling has been confirmed as the cause of these uplifts. This is a transformation of the mineral anhydrite (anhydrous calcium sulphate) into gypsum (hydrous calcium sulphate). A pre-condition for this transformation is that the anhydrite is in contact with water, which is then stored in its crystalline structure".
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Staufen im Breisgau
Staufen im Breisgau (German pronunciation: [ˈʃtaʊfn̩ ʔɪm ˈbʁaɪsɡaʊ], lit. 'Staufen in the Breisgau'; High Alemannic: Staufe im Brisgau) is a German town in the Breisgau-Hochschwarzwald district of Baden-Württemberg. It had a population of approximately 8,300 in 2019.
The city of Staufen im Breisgau lies in the district of Breisgau-Hochschwarzwald in the German state of Baden-Württemberg. Staufen has approximately 7,700 inhabitants and forms, together with the community of Münstertal, Black Forest, a community administrative unit.[citation needed]
It is noted in history and culture for its association with Faust who, according to one source, died in or near Staufen around 1540.
Staufen lies at the foot of the Black Forest at the exit from the Münstertal. The Black Forest valley of Neumagen goes here directly over into the Rhine plain. The piedmont of the Black Forest is less distinct. North of the valley exit, the steeply rising old castle ruins dominates; to the southwest begins the hilly landscape of the Markgräflerland. Staufen lies on the border between two natural and economic areas: the Rhine plain up to the piedmont with its cultivation of grain, vineyards and vegetables; and the Black Forest, with its cattle and wood, and, until the 19th century, silver mines.[citation needed]
Since 2008, the centre of the city has reported to have risen some 12 centimetres (4.7 in), after initially sinking a few millimeters. This has caused considerable damage to buildings in the city centre, including the historical town hall.
The cause for this geological change has been identified as a drilling operation conducted in the summer and autumn of 2007 to provide geothermal heating to the city hall. The drilling perforated an anhydrite layer and caused high-pressure groundwater to come into contact with the anhydrite, which then began to expand.
By 2010, some sections of town had risen by 30 centimetres (12 in). In July 2013, no end to the rising process was in sight.
Data from the TerraSAR-X radar satellite before and after the changes have confirmed the localised nature of the situation. "A geochemical process called anhydrite swelling has been confirmed as the cause of these uplifts. This is a transformation of the mineral anhydrite (anhydrous calcium sulphate) into gypsum (hydrous calcium sulphate). A pre-condition for this transformation is that the anhydrite is in contact with water, which is then stored in its crystalline structure".
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