Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Robert C. Bucknam"'
Autor:
Tom Parsons, Philipp C. Molzer, Michael Fisher, Kenneth C. Creager, Richard J. Blakely, Robert S. Crosson, U. S. Ten Brink, Robert C. Bucknam
Publikováno v:
Bulletin of the Seismological Society of America. 92:1737-1753
The Seattle fault, a large, seismically active, east-west-striking fault zone under Seattle, is the best-studied fault within the tectonically active Puget Lowland in western Washington, yet its subsurface geometry and evolution are not well constrai
Publikováno v:
Quaternary Research. 54:384-393
At a marsh on the hanging wall of the Seattle fault, fossil brackish water diatom and plant seed assemblages show that the marsh lay near sea level between ∼7500 and 1000 cal yr B.P. This marsh is uniquely situated for recording environmental chang
Publikováno v:
Engineering Geology. 36:183-195
Two major construction projects of ancient times in China involved what todaywould be considered engineering geology. We describe an ancient canal system in Gaotai County, Gansu province that was possibly begun in the Han dynasty (206 BC–220 AD). T
Autor:
Samuel Y. Johnson, Richard D. Koehler, Silvio K. Pezzopane, Ralph A. Haugerud, Brian L. Sherrod, Ray E. Wells, Harvey M. Kelsey, Alan R. Nelson, Lee-Ann Bradley, Robert C. Bucknam, William T. Laprade
Publikováno v:
Open-File Report.
Autor:
Dean Hancock, Jonathan W. Godt, Margo L. Johnson, Richard L. Dart, Robert C. Bucknam, Lee-Ann Bradley, Manuel Mota Chavarria, Sharon A. Rafferty, Arthur C. Tarr, Jeffrey A. Coe
Publikováno v:
Open-File Report.
The torrential rains that accompanied Hurricane Mitch in October and November of 1998 triggered thousands of landslides in the moderate to steep terrain bordering the Motagua and Polochic Rivers in eastern Guatemala. Using aerial photographs taken be
Publikováno v:
Open-File Report.
Publikováno v:
Open-File Report.
Publikováno v:
Science (New York, N.Y.). 258(5088)
Shorelines rose as much as 7 meters along southern Puget Sound and Hood Canal between 500 and 1700 years ago. Evidence for this uplift consists of elevated wave-cut shore platforms near Seattle and emerged, peat-covered tidal flats as much as 60 kilo
Publikováno v:
Geology. 34:585
A major earthquake on the Seattle fault, Washington, ca. A.D. 900–930 was first inferred from uplifted shorelines and tsunami deposits. Despite follow-up geophysical and geological investigations, the rupture parameters of the earthquake and the ge
Autor:
Richard J. Blakely, Brian L. Sherrod, Robert C. Bucknam, Alan R. Nelson, Craig S. Weaver, Thomas M. Brocher, Ralph A. Haugerud, Harvey M. Kelsey
Publikováno v:
Geology. 32:9
Airborne laser mapping confirms that Holocene active faults traverse the Puget Sound metropolitan area, northwestern continental United States. The mapping, which detects forest-floor relief of as little as 15 cm, reveals scarps along geophysical lin