PPT-Landslides

Ryan terry geography 1000 eportfolio fall 2015 What is a landslide Definition The downward sliding of a relatively dry mass of earth and rock Dictionarycom The term landslide includes a wide range of ground movement such as rock falls deep failure of slopes and shallow debris flows. Mountains. Karl M. Emanuel. North Zone Geologist. Black Hills National Forest. This slide shows generalized illustrations of most of the major landslide types.. All of the these slope failure styles are seen within the Black Hills, but most of the those observed in our area are of the following types.. a landslide . monitoring system using electrical resistivity tomography. Rose . Hen-Jones, . Dr.. J. Chambers, . Dr.. D. Gunn, . Dr.. P. Hughes, . Prof.. S. . Glendinning. Future climate change could have a devastating impact on the stability of engineered slopes, including embankments and cuttings. Weather sequences influence ground moisture levels, which affect fill properties. Landslides Pomeroy, J. S., and Davies, W. E., 1975,Map of susceptibility to landsliding, Allegheny County, Pennsylvania:U.S. Geolocal Survey Miscellaneous Field Studies Map MFB, 2 sheets scale 1:50,00 9/20/2011. Pattern to Process,. Process to Pattern. Moral of the Day. “Process” occurs when “thresholds” are exceeded in the balance of driving and resisting forces.. Geomorphologic Processes. M7.6. Landslides. and . other. forms . of . mass. wasting. Particles create an angle of repose . based on their size and angularity. Angle of. repose. Fine sand. Coarse sand. Angular pebbles. 45°. 40°. and Landslides. Earthquakes. http://youtu.be/cavq2HFBa-U. (National Geographic Video - 2:58). Shaking of the land when Earth’s plates move.. http://www.classzone.com/books/earth_science/terc/content/visualizations/es0804/es0804page01.cfm?chapter_no=visualization. Mitigation. . Bob Hickey. Although gravity acting on an over-steepened slope is the primary reason for a landslide, there are other contributing factors. The term landslide includes a wide range of ground movement, such as rock falls, deep failure of slopes, and shallow debris flows. . Landslides The two regions most vulnerable to landslides are the Himalayas and the Western Ghats. The Himalayas mountain belt comprise of tectonically unstable younger geological formations subjected Prepared By:. John Blair. Sean Donahue. Celeste Hoffman. Kimberly . Klinkers. Megan Slater. Green River . Basin Location. Green River Basin . Stratigraphic. Correlation Chart showing Study Map Units. http://. Mountains, and valleys form as tectonic plates crash into one . another (. convergent. ). . These mountains do not last forever. As they age, they are torn down by the very slow, but persistent forces of weathering, mass wasting, and erosion.. They Shape Our Landscape. As plates move, we may feel these movements as earthquakes. If there were no plate motions, our planet would not look like home. There would be no mountains, no valleys, no plateaus . Gioia, E.. 1. , Speranza, G.. 2. , Ferretti, M.. 2. , Marincioni, F. . 1. , . Godt. , J. W.. 3. , and . Baum. , R. L.. 3. Department. . of Life and . Environmental. . Sciences. , Marche . Polytechnic. M. odeling Laboratory. Helena Mitasova . http://skagit.meas.ncsu.edu/~helena/. . email:hmitaso@ncsu.edu. . Katherine Weaver, . Keren. . Cepero. , . Emily Russ, . Eric Hardin, Paul Paris, Nathan Lyons. Bo Lind, Swedish Geotechnical Institute. Glaciated landscape with soft sediments . (silt-clay). Valleys and. Low-lands. Göta 1957 . Tuve 1977 . Vagnhärad 1997 . Småröd 2006. Post-glacial rebound – Erosion and landslides.