Summary of results Comparing Mechanical and Geodetic Models of Los Angeles Basin Faults

نویسندگان

  • Michele Cooke
  • Susan Owen
چکیده

s related to this work Cooke, Michele and Susan Owen, Comparing Mechanical and Geodetic Models of Los AngelesBasin Faults, SCEC Annual Meeting, Oxnard, 2001. ReferencesArgus, D. F., M. Heflin, A. Donnellan, F. Webb, D. Dong, K. Hurst, D. Jefferson, G. Lyzenga, M.Watkins, and J. Zumberge, Shortening and thickening of metropolitan Los Angeles measuredand inferred by using geodesy, Geology, 27, no. 8, 703-706 (1999).Davis, T.L., J. Namson, and R.F. Yerkes, A cross-section of the Los Angeles area: seismicallyactive fold and thrust belt, the 1987 Whittier Narrows earthquake, and earthquake hazard,Journal of Geophysical Research, 94, 9644-9664 (1989)Dolan, J. F. et al., Active tectonics, paleoseismology, and seismic hazards of the Hollywood fault,northern Los Angeles basin, California, GSA Bulletin, 109, 12, 1595-1616 (1997)Dolan, Gath, Grant, Legg, Lindvall, Mueller, Oskin, Ponti, Rubin, Rockwell, Shaw, Treiman, Wallsand Yeats, 2001, Active faults in the Los Angeles Metropolitan Region, SCEC group C report.Feigl, K.L., D.C. Agnew, Y. Bock, D. Dong, A. Donnellan, B.H. Hager, T.A. Herring, D.D.Jackson, T.H. Jordan, R.W. King, S. Larsen, K.M. Larson, M.H. Murray, Z. Shen, and F.H.Webb, Space geodetic measurement of crustal deformation in Central and Southern California,1984-1992, Journal of Geophysical Research, 98 (12), 21,677-21,712, 1993.McNeilan, T. W. et al., Style and rate of Holocene slip, Palos Verdes fault, southern California,Journal of Geophysical Research, 101, B4, 8317-8334 (1996)Oskin, Sieh, Rockwell, Miller, Guptill, Curtis, McArdle and Elliot, 2000. Active parasitic folds onthe Elysian Park Anticline: Implications for seismic hazard in central Los Angeles, California,Geological Society of America Bulletin, 112, p 693-707. Petersen, M. D. and S.G. Wesnousky, Fault Slip Rates and Earthquake Histories for Active Faultsin Southern California, Bulletin of the Seismological Society of America, 84, 5, 1608-1649(1994)Shaw, J.H. and J. Suppe, Earthquake hazards of active blind-thrust faults under the central LosAngeles basin, California, Journal of Geophysical Research, 101, 8623-8642 (1996)Thomas, 1994, POLY3D: A Three-Dimensional, Polygonal Element, Displacement DiscontinuityBoundary Element Computer Program with Applications to Fractures, Faults, and Cavities inthe Earth's Crust, MS Thesis Stanford University.Wright, T.L., Structural Geology and Tectonic Evolution of the Los Angeles Basin, California, inActive Margin Basins, Biddle, K.T., ed. (AAPG 1991) Table 1: Model slip results FaultSlip sense Average reverseslip (mm/year)Average strikeslip (mm/year)* Baldwin HillsR-RL 0.24+0.05-0.14+0.03 ComptonRL-R 0.34+0.27-0.53+0.31 Coyote HillsR0.27+0.110.02+0.04 Upper ElysianR0.17+0.07-0.05+0.05 Lower ElysianR0.52+0.14-0.09+0.23 HollywoodR-LL 0.52+0.100.51+0.10 H’wood RaymondconnectR-LL0.49+0.130.47+0.06 Los AngelesR0.25+0.09-0.12+0.10 Newport-Inglewood RL0.07+0.05-0.60+0.22 Palos VerdesRL-R 0.86+0.24-1.08+0.24 RaymondLR-R 0.30+0.080.45+0.11 Redondo CanyonR0.39+0.120.02+0.05 Santa AnaLR-R 0.26+0.08-0.37+0.39 Santa FeR0.34+0.14-0.03+0.05 Santa MonicaLR-R 0.47+0.110.50+0.20 WhittierRL0.43+0.33-1.07+0.34 Workman HillsRL-R 0.32+0.06-0.64+0.12*Negative strike-slip indicates right-lateral movement, positive is left-lateral.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Comparing Mechanical and Geodetic Models of Los Angeles Basin Faults

s related to this work Cooke, Michele, Susan Murphy and Susan Owen, Comparing Mechanical and Geodetic Models of Los Angeles Basin Faults, SCEC Annual Meeting, Oxnard, 2000. Murphy, Susan and Michele Cooke, 3-D Mechanical Modeling of Faults Within The Los Angeles Basin, California, American Geophysical Union Annual Fall Meeting, San Francisco 2000.

متن کامل

How Sensitive Are Fault-Slip Rates in the Los Angeles Basin to Tectonic Boundary Conditions?

Geodetic studies have produced different interpretations of the relative vertical thickening versus escape tectonics occurring within the Los Angeles basin based on calculated horizontal strain rates ranging from 56 10 /yr contraction at N36 E to 85 10 /yr north–south contraction and 60 10 /yr east–west extension. Three-dimensional forward mechanical models of faults in the Los Angeles basin ar...

متن کامل

Mechanical fault interaction within the Los Angeles Basin: A two-dimensional analysis using mechanical efficiency

[1] Mechanical models examine deformation within eight different structural cross sections proposed by Davis et al. [1989] and Shaw and Suppe [1996] along a northeastsouthwest transect across the Los Angeles Basin, California. Horizontal contraction of the models, constrained by geodetic measurements, yields varying dip-slip rates along frictionally sliding faults within the different cross sec...

متن کامل

Space geodetic determination of spatial variability in relative sea level change, Los Angeles basin

[1] We combine Synthetic Aperture Radar Interferometry (InSAR), tide gauge, and continuous GPS measurements to determine the spatial variation in vertical land motion (VLM) along the coast of the Los Angeles basin over the past decade, and to examine the impact of spatially variable VLM on relative sea level trends. By identifying radar scattering targets with long-term coherence we make height...

متن کامل

Constraining the kinematics of metropolitan Los Angeles faults with a slip‐partitioning model

Due to the limited resolution at depth of geodetic and other geophysical data, the geometry and the loading rate of the ramp-décollement faults below the metropolitan Los Angeles are poorly understood. Here we complement these data by assuming conservation of motion across the Big Bend of the San Andreas Fault. Using a Bayesian approach, we constrain the geometry of the ramp-décollement system ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2002