The first that he has highlighted occurred between 24 and 27 March 2018 at -50.919, -73.601.\u00a0 This is a Planet Labs image of the aftermath of the landslide, with a large volume of debris sitting on the glacier:-<\/p>\n
![\"A](\"https:\/\/blogs.agu.org\/landslideblog\/files\/2021\/10\/21_10-SPI-1.jpg\")
A satellite image of the landslide debris at Glacier Amalia on the Southern Patagonian Icefield, collected on 27 March 2018. Image copyright Planet Labs<\/a>, used with permission.<\/p><\/div>\n .<\/p>\n Hern\u00e1n has run the stats on this failure – it has a surface area of 1.6 square kilometres, with a runout length (on the glacier of 1.6 km – about a mile) and a width of 1050 metres.\u00a0 There are also some smaller failures, such as the one on the very right of the image.\u00a0 Interestingly, on flickr there is an image of the landslide deposit on the glacier<\/a>.<\/p>\n Hern\u00e1n has identified a second event a little to the east of this location on the Southern Patagonian Icefield, this time in 2019.\u00a0 This can be seen in a partially obstructed image on 28 April 2019 but the first image that captures it clearly is on 8 May 2019, when it was covered in a layer of snow:-<\/p>\n A satellite image of the 2019 landslide debris at Glacier Amalia on the Southern Patagonian Icefield, collected on 8 May 2019. Image copyright Planet Labs<\/a>, used with permission.<\/p><\/div>\n .<\/p>\n This is a slope failure on a similar scale – about 1.6 square kilometres surface area.\u00a0 It is about 1,100 metres long (on the ice) and about 1,600 metres wide.\u00a0 Including the source area the length is about 2.5 km.<\/p>\n Hern\u00e1n has pointed out that an abstract for the AGU Fall Meeting in 2019 (Van Wyk de Vries et al.<\/em> 2019<\/a>) mentions two landslides of this scale on the flanks of Reclus volcano.\u00a0 This is likely to be these two events.\u00a0 This what they wrote:<\/p>\n We identified a series of large debris avalanches from the volcanoes, suggesting that previously stable slopes have been disrupted. Two large (1-5 km2<\/sup>) avalanches occurred on the north flank of Reclus over the last two and a half years, and one 12 km2<\/sup>\u00a0avalanche occurred on the north flank of Lautaro earlier this year. Here we present a detailed description of the conditions preceding each collapse, and the properties of each collapse. The Reclus collapses are inferred to have been mostly unconsolidated rock, with moderate to low cohesion. The 2019 collapse was the larger of the two and settled onto Amalia glacier, causing local speedup and slowdown, possibly due to the loading of the ice.\u00a0<\/em><\/p>\n .<\/p>\n Planet Team (2021). Planet Application Program Interface: In Space for Life on Earth. San Francisco, CA. https:\/\/www.planet.com\/<\/a><\/p>\n![\"A](\"https:\/\/blogs.agu.org\/landslideblog\/files\/2021\/10\/21_10-SPI-2.jpg\")
References<\/h4>\n