C3S-ISLS Blog

As a consequence of prolonged rainfall several landslides and debris flows occured in Vorarlberg (Austria) in the course of the night from 01/06 to 02/06/2013. More information (in German):
http://vorarlberg.orf.at/tv/stories/2586886/

With the help of an Image-Matching-Software a point cloud was generated on the basis of 69 pictures for two shallow landslides. See more:
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An interesting website focusing on precipitation-thresholds. Landslides are likely to be triggered in case these values are exceeded.
http://rainfallthresholds.irpi.cnr.it/

The video below shows the movement of a shallow landslide along a very wet sliding surface. Processes of this type will be simulated with the help of physically-based modells.

In the section >>Links a collection of different online resources concerning “shallow landslides” is provided. Apart from general information, photo- and video-material, links to relevant blogs and websites will be included.
New contributions are highly welcome!

A fundamental basis for all further steps is a clear and specific definition of the process considered. Based on this definition a suitable model can be chosen and refined. The definition of a “shallow landslide” currently in use (in German):

Deutsche Definition:
„Rutschungen sind hangabwärts gerichtete, gleitende Bewegungen von Hangteilen aus Fest- und/oder Lockergestein (sowie Bodenmaterial)“ (Lateltin 1997, 9). Im Falle flachgründiger Rutschungen erfolgt die Bewegung im Sinne einer Translationsrutschung entlang einer zumeist hangparallelen, in maximal 2 m Tiefe liegenden Gleitfläche. Flachgründige Rutschungen in Lockergestein werden meist spontan aufgrund eines plötzlichen Verlustes der Scherfestigkeit innerhalb des Regoliths bzw. entlang der Fläche zwischen Regolith und anstehendem Gestein ausgelöst. Das Abgleiten der Rutschmasse erfolgt in der Regel in Form von Schichten oder Schichtpaketen. Bei ausreichendem Wasseranteil können aus flachgründigen Rutschungen Hangmuren entstehen (nach Bründl 2009, Cruden & Varnes 1996, Lateltin 1997, Varnes 1978).

On the project’s homepage, the current literature database with all quotes of the literature used, including the abstracts can be accessed.
>>Literature database

As of now contributions from online media concerning the topic area “shallow landslides” will be gathered in the section >>Press Reports. The media presence of the topic emphasizes the importance of the issue…
New contributions are highly welcome!

The first step after the project being officially started will be to set up a comprehensive literature database on the topic. Based on the literature research, the “state of the art” can be derived and a solid basis for further steps is provided. The entire quotes including the abstract can be accessed on the >>project’s homepage.

On this web-blog you can find a “research-diary” around the project “C3S-ISLS“. In the course of the project information on progress, planned tasks, field surveys and more will be provided. Contributions and Remarks on posts are highly welcome!