Abstract
AbstractExtreme storms commonly trigger landslides in regions of humid, warm tropical climate causing loss of life and economic devastation. The tropical mountainous areas of Guerrero in southwest Mexico are frequently hit by extreme hurricanes and cyclones and thus prone to landslides. On 16 September 2013, a huge landslide resulted in 71 fatalities and destroyed a large part of La Pintada Village. We applied remote sensing techniques using the LIDAR DEM and high-resolution images of the La Pintada area, a post-landslide field survey, geotechnical laboratory tests of colluvium material from the landslide, and a slope stability analysis. We also interviewed eyewitnesses accounts of the event. Our results suggest that the 2013 La Pintada landslide was a complex and two-stage event. An intense four-day-long rainfall event related to the landfall of Hurricane Manuel resulted in the oversaturation of soil, which was the main factor that caused the landslide. The effect of rainfall was amplified by the lack of...
Highlights
Natural hazards can lead to disasters that result in human death, economic loss, and environmental impacts (e.g. Scawthorn, Schneider, & Schauer, 2006)
La Pintada landslide—historical development The landslide that occurred at La Pintada on 16 September 2013 was not the first slide event to occur in this area
The already creeping La Pintada landslide and many other large deep-seated landslides throughout Guerrero State in southwest Mexico resulted from prolonged rainfall over five days (12–16 September 2013) during Hurricane Manuel that pushed a section of the slope over the failure point
Summary
Natural hazards can lead to disasters that result in human death, economic loss, and environmental impacts (e.g. Scawthorn, Schneider, & Schauer, 2006). Extreme precipitation events related to climate change have been increasing over the last decades The frequency, intensity, spatial coverage, and duration of extreme events have increased, corresponding with a greater number of natural hazards and disasters (UNISDR, 2012). Increasing extreme precipitation events can influence the occurrence of landslides (IPCC, 2012). Studies of the impacts of climate change on mass movements in different regions around the world have suggested that the number, temporal occurrence and size of mass movement phenomena will likely be altered by changes in precipitation and temperature The societal impact of mass movements is not distributed around the world; over the last few decades, most fatalities (more than 95%) related to extreme events have been recorded in developing countries (UNEP, 2012)
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