View the paper here. The authors performed field work in 2000 and 2001 to supplement previous work performed by others. Talk about a sweet site for some field work!
Machu Picchu at risk from Landslides
Geologic Hazards
Pittsburgh Area Has 49 Active Landslides
The Pittsburgh area has 49 active landslides or retaining wall failures in 29 neighborhoods according to a Pittsburgh Public Works Department survey. The estimated cost to fix 24 of those issues effecting public land is $7.4 million, which the City doesn’t have. Story source: Pittsburgh Live by way of Geology.com. (Map by BOB NEWELL/TRIBUNE-REVIEW)
Available Resources
Geo-companies in ENR’s 2017 Top 500 Design Firms
ENR’s annual top 500 design firms list for 2017 is out. These rankings are based on revenue for design services in the previous calendar year. Last year I extracted a subset of the list to see rankings of firms that are strong in geotechnical / geological related services, so I decided to do it again this year. I included firms that self-identified as geotechnical firms, as well as engineering firms that I know to have a strong geo emphasis. I’m sure there are some that I missed. I also included some of the major A&E firms that provide these types of services. Accordingly, it’s still a bit subjective on who is included. So here is the list of top Geo-Companies of 2017 (along with their change in ranking relative to 2016):
- 1 – AECOM, Los Angeles, Calif. (No change from 2016)
- 3 – CH2M, Englewood, Colo. (No change from 2016)
- 5 – TETRA TECH INC., Pasadena, Calif. (+2)
- 7 – AMEC FOSTER WHEELER, Atlanta, Ga. (-2)
- 8 – HDR, Omaha, Neb. (+1)
- 10 – STANTEC INC., Irvine, Calif. (+8)
- 13 – ARCADIS NORTH AMERICA/CALLISON RTKL, Highlands Ranch, Colo. (-1)
[Editor] Click through for the rest of the Geo list! [/Editor]
Geologic Hazards
Nile Landslide Destroys Large Stretch of Washington SR 410
A massive landslide has destroyed at least a quarter-mile of State Route 410 in Washington State, about 10 miles from Naches in Yakima County. It has also damaged about 12 structures including residential homes and quarry buildings and diverted the Naches River. The media has been referring to it as the Naches Slide, but the personnel from the Washington Department of Natural Resources, Division of Geology and Earth Resources who have began investigating the slide as well as WSDOT are calling it the Nile Landslide. (Photo by WAStateDNR-DoGaER)
Click through for photos and videos. For more info on the slide, check out the Sliding Thought Blog, an unofficial blog by Isabelle Sarikhan of the WAStateDNR – Division of Geology and Earth Resources “aka” the Washington Geologic Survey. She’s been actively investigating the slide along with some colleagues.