Download or read book Permanent Ground Movement Associated with the 1992 M written by Ross S. Stein and published by . This book was released on 1994 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: A critical element of the Humboldt County infrastructure is its vertical control network. The positions of bench marks (BMs) in the network are used for cadastral, roadways, engineering, and flood plain surveys. At the request of the Department of Public Works of Humboldt County, 333 km of the network nearest the 1992 Cape Mendocino earthquake was resurveyed by the National Geodetic Survey in late 1992, with 100 new BMs emplaced. Comparing the new heights with those measured before 1992 gives the vertical deformation associated with the earthquake, which includes motion caused by slip on the earthquake fault, earthquake-triggered surficial disturbances such as landslides and liquefaction, and settling of engineered structures due to earthquake shaking. We find that 37 BMs in Humboldt County display height changes that can not be accounted for by the earthquake fault slip, and thus indicate monument, soil or structural instability: 18 BMs show subsidence caused by groundwatet withdrawal in the Eel River basin; 16 BMs show residual movement of less than a few centimeters, and 4 BMs show major disturbance of up to 4 m. One of the disturbed BMs lies near an earthquake-induced tension crack, and another is near the site of liquefaction in the Salt river bed. Nine of the disturbed BMs are set in bridge abutments or highway overpasses, and 6 are set in retaining walls, and thus might be indicators of structural weakness or incipient failure. In addition, the distribution of landslides, liquefaction, and road cracking reveals other sites of potential ground failure along highways, seawalls, and foundations. Some 1992 BMs could be resurveyed to monitor subsequent movement. Using a model for the earthquake fault slip that best fits the geodetic and seismic observations of the earthquake, we infer the uplift of shoals and rocks offshore Humboldt County. We estimate mat 13 shoals lying in less than 3 fathoms (5.5 m) of water were uplifted by more than 0.45 fathoms (0.83 m), presenting increased hazards to coastal navigation. In addition, a 4 x 8 nautical-mile wide (7 x 14 km) zone is identified as the site of potential seafloor faulting with displacement of up to 3 m, and the head of Mattole Canyon is suggested as the site of possible seafloor landslides. These findings have been furnished to the U.S. Coast Guard for issuance as a Notice to Mariners, and to the National Ocean Survey of NOAA for bathymetric survey planning. We also find that the flood plain boundary of the Mattole river at Petrolia will be shifted by as much as 62 m (200f) as a result of the permanent change in elevation caused by the earthquake.
Download or read book National Earthquake Hazards Reduction Program Summaries of Technical Reports Volume XXXV written by and published by . This book was released on 1994 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Download or read book Earthquake Spectra written by and published by . This book was released on 2002 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Developments in Geotechnical Engineering from Harvard to New Delhi 1936 1994 written by A.S. Balasubramaniam and published by CRC Press. This book was released on 2021-07-01 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the developments that have taken place in the field of geotechnical engineering since the first international conference on Soil Mechanics and Foundation Engineering was held in Harvard University in 1936 until the January 1994 conference in New Delhi, India.
Download or read book Late Holocene Coseismic Subsidence and Coincident Tsunamis Southern Cascadia Subduction Zone Hookton Slough WIGI Humboldt Bay California written by Jason Robert Patton and published by . This book was released on 2004 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engineering for Earthquake Disaster Mitigation written by Masanori Hamada and published by Springer. This book was released on 2014-06-04 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earthquake and tsunami disasters have been increasing rapidly and globally in the last quarter-century. The purpose of this book is to provide essential knowledge and information on the mitigation of earthquakes and tsunamis for graduate students, young researchers, and geotechnical engineers. It begins by presenting recent cases of earthquakes that have occurred in the world, referring to tsunamis and soil liquefaction and how to cope with such disasters. The final chapter proposes strategies for disaster mitigation against in Japan earthquakes and tsunamis in the future.
Download or read book The World Factbook written by United States. Central Intelligence Agency and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The World Factbook written by and published by . This book was released on 1994 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mattole River Watershed Assessment Report written by and published by . This book was released on 2003 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cumulated Index Medicus written by and published by . This book was released on 1989 with total page 1416 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Schuyler Heim Bridge Replacement and SR 47 Expressway Project written by and published by . This book was released on 2009 with total page 1100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Official Gazette of the United States Patent and Trademark Office written by and published by . This book was released on 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S National Report to International Union of Geodesy and Geophysics written by and published by . This book was released on 1995 with total page 1476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ground Movements Caused by Different Embedded Retaining Wall Construction Techniques written by D. R. Carder and published by . This book was released on 1995 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrogeology and Land Use Management written by Miriam Fendeková and published by . This book was released on 1999 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt:
