Liquefaction Hazard Maps for Three Earthquake ScenariosEntry ID: USGS_OFR_2008_1270
Abstract: Maps showing the probability of surface manifestations of liquefaction in the northern Santa Clara Valley were prepared with liquefaction probability curves. The area includes the communities of San Jose, Campbell, Cupertino, Los Altos, Los Gatos Milpitas, Mountain View, Palo Alto, Santa Clara, Saratoga, and Sunnyvale. The probability curves were based on complementary cumulative frequency ... distributions of the liquefaction potential index (LPI) for surficial geologic units in the study area. LPI values were computed with extensive cone penetration test soundings. Maps were developed for three earthquake scenarios, an M7.8 on the San Andreas Fault comparable to the 1906 event, an M6.7 on the Hayward Fault comparable to the 1868 event, and an M6.9 on the Calaveras Fault. Ground motions were estimated with the Boore and Atkinson (2008) attenuation relation. Liquefaction is predicted for all three events in young Holocene levee deposits along the major creeks. Liquefaction probabilities are highest for the M7.8 earthquake, ranging from 0.33 to 0.37 if a 1.5-m deep water table is assumed, and 0.10 to 0.14 if a 5-m deep water table is assumed. Liquefaction probabilities of the other surficial geologic units are less than 0.05. Probabilities for the scenario earthquakes are generally consistent with observations during historical earthquakes.
[Summary provided by the USGS.]
Data Set Citation
Dataset Originator/Creator: U.S. EPA
Dataset Title: Global Atmospheric Concentrations Methane Over Time
Dataset Release Date: 2010
Dataset Publisher: U.S. EPAOnline Resource: http://www.epa.gov/climatechange/science/indicators/ghg/ghg-concent...
Start Date: 1950-01-01Stop Date: 2009-12-31
U.S. Environmental Protection Agency (2012), INVENTORY OF U.S. GREENHOUSE GAS EMISSIONS AND SINKS: 1990 – 2010, EPA 430-R-12-001, 1-60, U.S. Environmental Protection Agency, Washington, D. C., http://www.epa.gov/climatechange/Downloads/ghgemissions/US-GHG-Inve...
Siegenthaler, U., T. F. Stocker, E. Monnin, D. Lüthi, J. Schwander, B. Stauffer, D. Raynaud, J.M. Barnola, H. Fischer, V. Masson-Delmotte, and J. Jouzel (2005), Stable carbon cycle-climate relationship during the late Pleistocene, 310, 5752, 1313–1317, Science
Steele, L.P., P.B. Krummel, and R.L. Langenfelds. (2007), Atmospheric CO2 concentrations (ppmv) derived from flask air samples collected at Cape Grim, Australia, and Shetland Islands, Scotland., Atmospheric, Research, Commonwealth Scientific, and Industrial Research Organisation, Aspendale, Victoria, Australia
Chamard, P., L. Ciattaglia, A. di Sarra, and F. Monteleone. (2001), Atmospheric CO2 record from flask measurements at Lampedusa Island., record from flask measurements at Lampedusa Island. In: Trends: A compendium of data on global change., Department of Energy., Oak Ridge, TN: U.S., http://cdiac.ornl.gov/trends/co2/lampis.html
Barnola, J.M., D. Raynaud, C. Lorius, and N.I. Barkov (2003), Historical CO2 record from the Vostok ice core., In: Trends: A compendium of data on global change., U.S. Department of Energy, Oak Ridge, TN, http://cdiac.ornl.gov/trends/co2/vostok.html
Flückiger, J., E. Monnin, B. Stauffer, J. Schwander, T.F. Stocker, J. Chappellaz, D. Raynaud, and J.M. Barnola (2002), High resolution Holocene N2O ice core record and its relationship with CH4 and CO2., 16, 1, 10-11, Global Biogeochem. Cycles
Etheridge, D.M., L.P. Steele, R.L. Langenfelds, R.J. Francey, J.M. Barnola, and V.I. Morgan (1998), Historical CO2 records from the Law Dome DE08, DE08-2, and DSS ice cores., In: Trends: A compendium of data on global change., U.S. Department of Energy, Oak Ridge, TN, http://cdiac.ornl.gov/trends/co2/lawdome.html
Neftel, A., H. Friedli, E. Moor, H. Lötscher, H. Oeschger, U. Siegenthaler, and B. Stauffer (1994), Historical CO2 record from the Siple Station ice core, In: Trends: A compendium of data on global change, U.S. Department of Energy, Oak Ridge, TN, http://cdiac.ornl.gov/trends/co2/siple.html
IPCC (Intergovernmental Panel on Climate Change) (2007), Climate change 2007: Synthesis report (Fourth Assessment Report), Cambridge University Press, Cambridge, United Kingdom
Creation and Review Dates
DIF Creation Date: 2012-06-28
Last DIF Revision Date: 2012-06-29