Back to Search
Start Over
The Hooskanaden Landslide: historic and recent surge behavior of an active earthflow on the Oregon Coast
- Source :
- Landslides. 17:2589-2602
- Publication Year :
- 2020
- Publisher :
- Springer Science and Business Media LLC, 2020.
-
Abstract
- This paper presents an analysis of the Hooskanaden Landslide, an earthflow, which experienced a dramatic surge event beginning on February 24, 2019, closing US Highway 101 near mile point 343.5 for nearly 2 weeks. This ~ 1 km long surge event resulted in horizontal displacements of up to 45 m and uplift of 6 m at the toe located on a gravel beach adjacent to the Pacific Ocean. The Hooskanaden Landslide, likely active since the eighteenth century, exhibits regular activity with a recurrence interval of major surge events of approximately every 20 years, transitioning from slow to relatively rapid velocities. During the 2019 event, maximum displacement rates of approximately 60 cm/h were observed, slowly decreasing to 15 cm/h for a sustained period of approximately 2 weeks before the eventual return to baseline conditions (
- Subjects :
- 021110 strategic, defence & security studies
Earthflow
Baseline (sea)
0211 other engineering and technologies
Landslide
02 engineering and technology
Geotechnical Engineering and Engineering Geology
Pacific ocean
Natural hazard
Surge
Maximum displacement
Seismology
Geology
021101 geological & geomatics engineering
Subjects
Details
- ISSN :
- 16125118 and 1612510X
- Volume :
- 17
- Database :
- OpenAIRE
- Journal :
- Landslides
- Accession number :
- edsair.doi...........d17f9fc64f82ff7edd62cdd7f3b2de7f