| Abstract: | On January 15, 1997, a landslide of approximately 100,000-m3 from a coastal bluff swept five cars of a freight train into Puget Sound at Woodway, Washington, USA, 25 km north of downtown Seattle. The landslide resulted from failure of a sequence of dense sands and hard silts of glacial and non-glacial origin, including the Lawton Clay, a hard, jointed clayey silt that rarely fails in natural slopes. Joints controlled ground-water seepage through the silt and break-up of the landslide mass. During September of 1997, the US Geological Survey began measuring rainfall, ground-water pressures, and slope movement at the bluff where the landslide occurred. Data are collected every 15 minutes and updated hourly on the World-Wide-Web. Pore pressures observed from September 1997 to February 1998 generally were low and pressures near the bluff face, in the upper few meters of the hard clayey silt, increased gradually. |
| Genre: | Conference Paper |
| ProdID: | 70020252 |
| Citation Author: | Baum, R. L.; Harp, E. L.; Likos, W. J.; Powers, P. S.; Lahusen, R. G. |
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| Citation Editor: | Evangelista A.Picarelli L.Evangelista A.Picarelli L. |
| Citation End Page: | 1065 |
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| Citation Language: | English |
| Citation Larger Work Title: | The geotechnics of hard soils - soft rocks. Proceedings of the second international symopsium on hard soils-soft rocks, Naples, October 1998. (Two volumes). |
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| Citation Number Of Pages: | 9 |
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| Citation Search Results Text: | Real-time monitoring of bluff stability at Woodway, Washington, USA; 1998; Conference Paper; The geotechnics of hard soils - soft rocks. Proceedings of the second international symopsium on hard soils-soft rocks, Naples, October 1998. (Two volumes).; Baum, R. L.; Harp, E. L.; Likos, W. J.; Powers, P. S.; Lahusen, R. G. |
| Citation Start Page: | 1057 |
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| Citation Year: | 1998 |
| Type: | citation/reference |
| Text: | Real-time monitoring of bluff stability at Woodway, Washington, USA; 1998; Conference Paper; The geotechnics of hard soils - soft rocks. Proceedings of the second international symopsium on hard soils-soft rocks, Naples, October 1998. (Two volumes).; Baum, R. L.; Harp, E. L.; Likos, W. J.; Powers, P. S.; Lahusen, R. G. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Thu, 1 Jan 1998 00:00 -0600 |
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