{"id":7776,"date":"2014-01-16T08:38:53","date_gmt":"2014-01-16T08:38:53","guid":{"rendered":"http:\/\/blogs.agu.org\/landslideblog\/?p=7776"},"modified":"2014-01-16T08:38:53","modified_gmt":"2014-01-16T08:38:53","slug":"aoraki-mount-cook","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2014\/01\/16\/aoraki-mount-cook\/","title":{"rendered":"Aoraki \/ Mount Cook: A new survey of its height after the 1991 landslide"},"content":{"rendered":"
The 1991 Aoraki \/ Mount Cook rock avalanche<\/h5>\n

On 14th December 1991 a rock avalanche occurred on Aoraki \/ Mount Cook in New Zealand, travelling a total distance of 7.5 km.\u00a0 The slide, which had an estimated volume of 12 million cubic metres, removed the top of the mountain, although forunately it did not cause any loss of life or property.\u00a0 GNS have a short information page about the landslide<\/a>, which includes this (famous in the landslide-world!) image:<\/p>\n

\"Aoraki<\/a>

http:\/\/www.teara.govt.nz\/en\/photograph\/8785\/aorakimt-cook-landslide<\/p><\/div>\n

..<\/p>\n

The landslide was believed to have removed about 10 m from the summit of the mountain, leaving a knife-edge ridge as shown in the image below, taken by Mauri McSaveney, also of GNS<\/a>.\u00a0 The circled dot is a climber for scale:<\/p>\n

\"Aoraki<\/a>

http:\/\/juliansrockandiceblog.blogspot.co.nz\/2014\/01\/the-changing-height-of-mount-cook.html<\/p><\/div>\n

..<\/p>\n

The 2013 resurvey of the height of Aoraki \/ Mount Cook<\/h5>\n

It was inevitable that such a knife-edge ridge would undergo erosion, reducing the height of the mountain further.\u00a0 However, until now no proper survey had been undertaken of the height of the mountain.\u00a0 GNS, working with the University of Otago, have just completed an expedition to accurately record the height of Aoraki \/ Mount Cook 22 years after the event.\u00a0 This is described in a very nice post on Julian’s Blog<\/a>, and there is a Youtube video of the work as well<\/a>:<\/p>\n

..<\/p>\n