StoryMaps: data stories

StoryMaps is a Showcase of smart Webmaps dealing with interesting themes (storytelling): information, learning, entertainment and inspiration linked to the use of geodata are the center of interests.

Randa rockslide

Screenshot of StoryMap 'Randa rockslide'

On 18 April 1991, around 15 million m3 of rock slid down to the valley near the town of Randa which is located in the Matter Valley. The rocks were the size of houses and the drop height was 600 metres. The main cause of the rockslide was the effect of frost and thaw periods and increased water pressure in the rock fissures. Another landslide comprising a few million cubic metres of rock material occurred in Randa on 9 May of the same year. A total of 33 million m3 of rock fell to the vallex in all of the rockslides. FActs on the frist edition of the Siegfried Map and the actual topographical map 1:25 000.

Further information

Morteratsch glacier: an ice giant is shrinking

Screenshot of StoryMap Historic aerial photographs  Where is it

Since beginning of the monitoring in 1878, the Morteratsch glacier is retreating steadily with an average recession rate of 16 meter/year. During warmer phases (1935 - 1965) shrinking rates of up to 48 meter/year have been observed. Since the 1990s, an increase of the recession is the case. The first edition of the Siegfried Map and the aerial imagery 2009 show us its withdrawal.

Further information

geo.admin.ch c/o
Federal Office of Topography swisstopo
COGIS (Coordination, Geo-Information and Services)
Seftigenstrasse 264
P.O. Box
3084 Wabern
Tel.
0041 58 469 03 15
Fax
0041 58 469 04 59

E-Mail


Print contact

geo.admin.ch

c/o
Federal Office of Topography swisstopo
COGIS (Coordination, Geo-Information and Services)
Seftigenstrasse 264
P.O. Box
3084 Wabern

Show map