Geosciences » landslides

Abandon California Highway 39 Because of Landslides?

Geology.com — Mon, 30 Jan 2012 05:09:24 +0000

An article in the Los Angeles Times reports that the California Department of Transportation would like to abandon State Highway 39 because landslide and other problems are costing $1.5 million per year to repair.

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Abandon California Highway 39 Because of Landslides?

Artisanal Mining Triggers 30% of Philippine Landslides?

Geology.com — Thu, 12 Jan 2012 20:13:46 +0000

Leo Jasareno, director of the Philippines Mines and Geosciences Bureau estimates that 30% of recent landslides in the Philippines have been triggered by the poor excavation practices of artisanal miners.

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Artisanal Mining Triggers 30% of Philippine Landslides?

Paseo Del Mar Landslide Update

Geology.com — Mon, 26 Dec 2011 20:53:17 +0000

Damage caused by a landslide that cut off the Paseo Del Mar highway near San Pedro, California appears to be confined to an area fenced off by the city. The Contra Costa Times has a photo showing the severity of damage.

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Paseo Del Mar Landslide Update

Landslides Plague Highway Construction in Oregon

Geology.com — Fri, 02 Dec 2011 01:44:40 +0000

Building a highway across ancient landslides with 30+ degree slopes in an area that gets 100 inches of rain per year can lead to problems.

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Landslides Plague Highway Construction in Oregon

San Pedro Landslide

Geology.com — Mon, 21 Nov 2011 05:30:02 +0000

Dave Petley has interesting photos and commentary about the recent landslide near San Pedro, California that has shut down the Paseo del Mar.

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San Pedro Landslide

Fire-Related Debris Flows in Arizona

Geology.com — Tue, 01 Nov 2011 10:51:12 +0000

Over one million acres of land in Arizona was damaged by wildfires in 2011. Now these areas are subject to potential debris flows during heavy rain. A recent article on the Arizona Geological Survey website describes the problem.

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Fire-Related Debris Flows in Arizona

Post-Wildfire Flooding and Debris Flow Hazard Mitigation

Geology.com — Tue, 21 Jun 2011 05:57:24 +0000

In response to the many wildfires in the southwestern United States, the Arizona Geological Survey has a collection of online resources related to post- wildfire flooding and debris flow hazards.

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Post-Wildfire Flooding and Debris Flow Hazard Mitigation

Levee Slide Threatens Mississippi Towns

Geology.com — Mon, 23 May 2011 05:36:14 +0000

A slide on an important levee along the Mississippi River threatens flooding of over a million acres and several Mississippi towns. The Army Corps of Engineers is working quickly to repair the slide.

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Levee Slide Threatens Mississippi Towns

Susceptibility to Deep-Seated Landslides in California

Geology.com — Fri, 20 May 2011 05:39:37 +0000

“This map shows the relative likelihood of deep landsliding based on regional estimates of rock strength and steepness of slopes. On the most basic level, weak rocks and steep slopes are more likely to generate landslides . The map uses detailed information on the location of past landslides, the location and relative strength of rock units, and steepness of slope to estimate susceptibility to deep-seated landsliding.” Quoted from the CAGS press release

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Susceptibility to Deep-Seated Landslides in California

Mitigating Landslides in Guatemala

Geology.com — Sat, 12 Feb 2011 01:57:39 +0000

Anne Hallum reports on her work in Guatemala, helping local people understand and mitigate landslide hazards.

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Mitigating Landslides in Guatemala