Friday, January 26, 2007

Landslide and Slope Movement Data

I am noticing there is interest for data regarding steep slopes and the movements (creep, slope movements, big slow movers, landslides) of earth in the mountain region of western North Carolina. The NC Geological Survey is the primary resource for data on slope movements in western North Carolina. They are a non-regulatory agency that is researching historical and current slope movements. Conversations have been taking place between me and the staff of the Asheville regional office of the NCGS in conducting training sessions on regional slope movements. Audiences we will be targeting are the geologist/geotechnician professionals.

One of the things that I have been advocating for in local ordinances is that all steep slope developments need to hire a geologist AND a geotechnician. This has been a recommendation of the NC Geological Survey. Now, this will not prevent slope movements. But, it may prevent loss of life. The reason for hosting a training program for these professionasl is that not all geologists and/or geotechs are solid with the conditions of western North Carolina slope movements. So, I will be assisting in developing refresher courses so that the public has professionals to rely upon. If you are interested in knowing when these will take place, send me an email and I will send you an email when they are scheduled.

For the general public, there is a tremendous amount of information on the Internet. Following are websites that I recommend for science-based data.

Geologic Hazards in North Carolina
http://www.geology.enr.state.nc.us/Landslide_Info/Landslides_recognition.htm#Landslide
This website provides background information on landslide types, events, causes and triggers, as well as rock and slope stability related to landslides

North Carolina Geological Survey
http://www.geology.enr.state.nc.us/Landslide_Info/costs.htm
This page summarizes actual and estimated costs attributed to geologic hazards in North Carolina. It provides the date(s) and level of events also.

The NC Geological Survey has also produced a book entitled "When the Ground Moves! A Citizen's Guide to Geologic Hazards in North Carolina, North carolina Geological Survey Information Circular 32 (IC32)" -- This colorful 23-page guide is an overview of several types of geologic hazards that occur in North Carolina. Pictures and diagrams illustrate the damage that can be caused by geologic hazards and the clues geologists look for when investigating these events. Perfect for non-geologists and teachers. This guide is correlated to the North Carolina Science Standard Course of Study. Price $5.00 (plus NC state sales tax and shipping). They also have copies at the Asheville Regional Office of NCGS. You can call 296-4500 and ask for the NC Geological Survey.

There are also two federal government websites that are descriptive and helpful.

Landslide images
http://landslides.usgs.gov/learningeducation/images.php

National Atlas – Government website
http://nationalatlas.gov/articles/geology/a_landslide.html

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