Important Info

Featured Sponsor

Become an Author is a community site, we are only as good as the content our members contribute! Whether it's a one time contribution, or a monthly or quarterly article, please consider becoming an author!

Latest Comments in...

Video of Highway 101 Landslide in California
Looks like the Facebook video gets cropped when I embedded it here. You ca
San Francisco Millennium Tower Has Settled 16 Inches
Misrepresents actual foundation geometry. Photos show deep excavation to ne
New FHWA Soil Nail Manual Addresses LRFD, Hollow Bars
Good evening from Barcelona, Spain. I am witting to you because of I am le
Engineering Geologists vs Geological Engineers vs Geotechnic
Geological engineer from Spain (looking for job smiley geoengineer.martin@gmail
Geologic Hazards
Big Sur Landslide Being Called The Biggest In State History PDF Print E-mail
Written by Randy Post   
Monday, 29 May 2017 22:39
The Big Sur landslide or Mud Creek landslide on the PCH, the worst Caltrans has ever seen.

A massive landslide covered California's famous Pacific Coast Highway (PCH) in 35 to 45 feet of soil and rock over a distance of 1,500 feet. Caltrans is calling the landslide 'one of a kind' and one of the biggest in the State's recorded history, and ' far the worst we have ever seen'. Wired Magazine has a great before and after picture to view the magnitude of this massive landslide. The slide is also being called the Mud Creek slide. It cuts off the southern route into the popular tourist destination called Big Sur. The latest information is that the highway could be closed for months, possibly even more than 1 year. [Source: More info at SFist via AEG Insider. Image: John Madonna, Associated Press via SF Chronicle]

Large Rockslide in Hawkins County, Tennessee PDF Print E-mail
Written by Randy Post   
Wednesday, 17 May 2017 23:25
Planar rock slide on Highway 70 in Hawkins County

As Dr. Petley noted in his blog post, this looks like a classic planar rock slide where the rock mass failed parallel to the dominant planar discontinuity set. The slide occurred on Highway 70 between SR 94 and Clinch Valley Road. It will take the better part of a week to clear the debris according to TDOT. [Source: The Landslide Blog - AGU Blogosphere. Image: Photo by Jay Herring via Amanda Ketchledge]

Video of Highway 101 Landslide in California PDF Print E-mail
Written by Randy Post   
Sunday, 30 April 2017 22:32
Landslide on Highway 101 near Leggett, California

A secondary landslide on Highway 101 north of Legget, California was captured on video at the end of April. The original slide closed the highway and after Caltrans was able to clear it and reopen the highway for several hours, a stuck motorist took this video. What strikes me is how overconfident the (presumably) Caltrans employees are. If you see the slope shedding rocks like that, you better get back in a hurry! [Source: Facebook Video from Wendy K. via Image: Times-Standard]

Large Boulder Causes Issues on SR 77 in Arizona PDF Print E-mail
Written by Randy Post   
Thursday, 01 December 2016 15:54
Massive boulder delays re-opening of ADOT's SR 77

Arizona DOT is undertaking a project to remove hazardous rock formations above Highway 77 between the towns of Globe and Winkelman, AZ (east of Phoenix). On November 29/30, The blasting work inadvertently dislodged an 18 foot boulder from about 150 feet above the roadway. The highway was closed at the time for the blasting operation, but it did take crews longer than planned to clear the road as a result of having to break up the massive boulder. [Source: Read more in the ADOT Press Release. Image: ADOT]

A 1-Minute 'Rock Avalanche' 4,800 Years Ago In Zion National Park PDF Print E-mail
Written by Randy Post   
Tuesday, 14 June 2016 00:04

Imagine the scene 4,800 years ago when a rock avalanche nearly 2 km long buried much of the Zion Valley in a matter of 90 seconds, creating a dam on the Virgin River that flooded essentially the entire floor of the canyon that millions of visitors enjoy every year. The researchers that analyzed this event are in the Geohazards group of the University of Utah led by Dr. Jeff Moore. Dr. Moore happens to be an old classmate of mine from the geological engineering program at the University of Arizona. I didn't dig up the publication where this Zion Canyon research was written before it went viral, but there are some great figures posted on his website and I'm sure you can click around and find the citation if you are interested. [Source: YouTube via Image: YouTube]

Last Updated on Tuesday, 14 June 2016 00:12
Video: Landslide Near Elk City, ID PDF Print E-mail
Written by Randy Post   
Sunday, 06 March 2016 22:20

This is some very interesting first-person video of a landslide near Elk City, Idaho, complete with expletives. :) I can't say I blame the videographer, it's not every day you see a slope like that come down. Must have been quite an experience to be there! [Source: YouTube. Image: YouTube]

Last Updated on Monday, 07 March 2016 05:22
Drones and Natural Disasters PDF Print E-mail
Written by Randy Post   
Tuesday, 09 February 2016 22:52

This is my colleague Dimitrios Zekkos, Associate Professor at the University of Michigan, and the founder of He's talking about his group's research involving utilizing drones after natural disasters. Cool stuff! [Source: University of Michigan MichEpedia YouTube Channel. Image: YouTube]

Last Updated on Wednesday, 10 February 2016 05:56
Pucker-worthy Debris Flow Video PDF Print E-mail
Written by Randy Post   
Tuesday, 09 February 2016 22:45

I saw this video a few weeks back on The Landslide Blog, and it's also been posted on It's well worth the watch. It's one of the scariest debris flow videos I've seen. Some hikers are crossing a channel cut naturally through old debris flow deposits, like a hiker bowling alley. Fortunately the guides hear it coming and everyone manages to get out of the channel before the latest debris flow roars through! [Source: YouTube via Dave's Landslide Blog. Image: YouTube]

Last Updated on Wednesday, 10 February 2016 05:57
Controversy Over Rafting Trip Through Site of Oso Landslide PDF Print E-mail
Written by Randy Post   
Tuesday, 23 June 2015 22:48
Controversial rafting trip down the Stillaguamish River by the Oso Landslide

A professional river guide came under fire for a rafting trip through the site of the Oso landslide. Families of the victims issued a cease and desist order, but the trip happened anyway. Opponents of the trip likened it to taking a trip through a graveyard, that it was disrespectful to those that died in the tragedy. Others noted that places like the site of the Boston bombing and the World Trade Center did not get to become off limits after their tragedies. The guide said that it was his first and last trip to that site because of the low volume of water. [Source: Read more from Q13 FOX News. Image: Q13 Fox News]

Apartment Building in China Collapses After Landslide PDF Print E-mail
Written by Randy Post   
Sunday, 31 May 2015 15:38
Nine story apartment building collapses in Guiyang city

A nine story apartment building in Guiyang city, China collapsed last week following heavy rains. Officials noted a landslide or mudslides were the apparent cause. There were as many as 16 people missing as rescuers searched the rubble of the 35 family residential building. [Source: via USGS Landslide Events. Image:]

Huge Undersea Landslide Caused Tsunami in Great Britain, Norway PDF Print E-mail
Written by Randy Post   
Friday, 08 May 2015 01:54
Location of Storegga Landslide

The largest known undersea landslide occurred over 8,000 years ago off the coast of Norway. The volume of material that moved is mind-blowing, over 4.6 X 1012 cubic yards or 850 cubic miles! Known as the Storegga landslide, the resulting tsunami buried neolithic settlements in Norway with sediment and caused wave runnup in Great Britain that was 80 feet higher than the normal high tide. The devastating loss of human life can only be imagined. Regarding that last question, anthropologists theorized that depending on the time of year when the disaster occured, the loss of life may have been less. During the summer and early autumn, most people in that region would have been in the highlands hunting moose and reindeer. The article linked below is about some interesting forensic geology work to determine the season when the landslide occurred. [Source: Read more at Image: "StoreggaFLCommonsZone" by Lamiot - Own work. Licensed under CC BY-SA 3.0 via Wikimedia Commons]

Ohio Highway Closed by House-Sided Boulder PDF Print E-mail
Written by Randy Post   
Thursday, 16 April 2015 23:16
House-sized boulder closed westbound US 52 near the Ohio River

Not too much to say about this, but check out the photo. The entire westbound portion of US Highway 52 near the Ohio River was closed last week as a house-sized boulder and other rockfall debris landed on the roadway. Crews anticipated it would take several days to clear the material and reopen the road. [Source: WLWT News via USGS Landslide Events. Image: Kentucky Transportation Cabinet via WLWT]

<< Start < Prev 1 2 3 4 5 6 7 8 9 10 Next > End >>

Page 1 of 20