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Flood (inundation) |
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Goldau rockslide (1806)
The historical rockfall event on Mount Rossberg is viewed as a textbook example of a rockslide. Following wet years in 1804 and 1805, and heavy downpours of rain in July and August 1806, a total of around 35-40 million m3 of...
Snow avalanche winter 1999
February 1999
In the late February 1999 a state of emergency prevailed in many regions of the Alps. Within a period of just five weeks, the snow cover in large parts of the Alpine region had increased by over five metres. For...
Massnahmen Hochwasser: Geschiebesammler
Ein Geschiebesammler ist ein Bauwerk, welches die Fliessgeschwindigkeit eines Gewässers in einem bestimmten Abschnitt verringert und oftmals den Fliessquerschnitt vergrössert. Die daraus resultierende Verringerung der...
Flood Wolfenschiessen (2005)
The intensive precipitation transformed both the river Engelberger Aa and nearby streams into raging torrents that transported large volumes of bedload, debris and wood into the valley and burst their banks in places. Many...
Tsunami
A tsunami consists of a series of water waves, mostly caused by seaquakes and undersea landslides, which spread rapidly on oceans and lakes and cause extensive damage along shores. Ther term "tsunami" originates from...
Schattenbach avalanche
The Schattenbach avalanche near Walenstadt in the canton of St. Gallen is an infamous avalanche which is shown here plunging down the valley as a vast powder-snow avalanche.
The formation of a powder-snow avalanche is favoured...
Massnahmen Hochwasser: Uferverbauungen
Ziel von Uferverbauungen ist es die Gefahr von Ausbrüchen der Bäche zu vermindern und zugleich Raum für die Siedlungsnutzung zu schaffen. Sie wirken als Uferschutz und Hangfussicherungen.
Massnahmen Hochwasser: Objektschutz
Eine dem Standort angepasste Bauweise bildet die elementare Voraussetzung für den Schutz von Bauten. Schwachstellen können teilweise nachträglich minimiert werden. Zum Beispiel durch die Montage dichter Türen und Fenster, die...
Flood protection, alleviation and rehabilitation measures
The measures implemeted to provide protection against floods can be divided into three phases:
The preventive measures include, for example, the maintenance of water courses and protective structures and spatial planning...
Lake-emptying at the Lower Grindelwald Glacier (2008)
Friday 30 May 2008
Despite strong inflows, the water level in the glacier lake did not rise in the course of the morning. The river Lütschine became increasingly yellow in colour over the course of the day. The maximum lake...