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Seasonal rain and snow trigger small quakes on California faults（图）
Seasonal rain snow small quakes California faults
2017/7/21
California’s winter rains and snow depress the Sierra Nevada and Coast Ranges, which then rebound during the summer, changing the stress on the state’s earthquake faults and causing seasonal upticks i...
This paper presents an overview of the advancement in our knowledge of California's earthquake history since
~ 1800, and especially during the last 30 years. We first review the basic statewide resea...
Re-Thinking Southern California Earthquake Scenarios in Coachella Valley Segment of San Andreas Fault
Southern California Earthquake Scenarios Coachella Valley Segment San Andreas Fault
2014/12/30
AMHERST, Mass. – New three-dimensional (3D) numerical modeling that captures far more geometric complexity of an active fault segment in southern California than any other, suggests that the overall e...
Analysis of teleseismicPwaves with a 5200-station array in Long Beach, California: Evidence for an abrupt boundary to Inner Borderland rifting
Analysis of teleseismic waves in Long Beach, California Evidence an abrupt boundary Inner Borderland rifting
2014/4/10
We analyze teleseismicPwaves from four Mw≥6.5 earthquakes recorded by a petroleum industry survey in Long Beach, California. The survey used a 2-D array with up to 5200 seismometers, 120 m mean spacin...
Evidence of upper-mantle processes related to continental rifting versus oceanic crust in the Gulf of California
Mantle processes Phase transitions North America
2014/4/10
Receiver functions from teleseismic events, recorded by stations around the Gulf of California, are used to map the upper-mantle seismic discontinuities. We observe a mean transition zone thickness co...
Sedimentary structure of large sand dunes: examples from Dumont and Eureka dunes, California
Ground penetrating radar Geomorphology Wave propagation
2014/4/10
The current research presents ground penetrating radar images up to 30 m in depth of two large desert dunes in California, USA— a barchanoid ridge in the Dumont field and a linear dune in the Eureka e...
The Relationship Between Upper Mantle Anisotropic Structures Beneath California, Transpression, and Absolute Plate Motions
The Relationship Between Upper Mantle Anisotropic Structures California Transpression Absolute Plate Motions
2014/4/10
We calculated SKS splitting parameters for the California Integrated Seismic Network. In southern California, we also estimated splitting in the upper 100 km using azimuthal anisotropy determined fr...
Superficial simplicity of the 2010 El Mayor–Cucapah earthquake of Baja California in Mexico
Superficial simplicity El Mayor–Cucapah earthquake Baja California in Mexico
2014/4/9
The geometry of faults is usually thought to be more complicated at the surface than at depth and to control the initiation, propagation and arrest of seismic ruptures 1–6. The fault system that runs ...
Crustal thickness variations in the margins of the Gulf of California from receiver functions
Moho depth receiver functions lower crustal flow
2014/4/10
Receiver functions (RFs) from teleseismic events recorded by the NARS-Baja array were used to map crustal thickness in the continental margins of the Gulf of California, a newly forming ocean basin. A...
Upper Crustal Structure from the Santa Monica Mountains to the Sierra Nevada, Southern California: Tomographic Results from the Los Angeles Regional Seismic Experiment, Phase II (LARSE II)
Upper Crustal Structure Santa Monica Mountains Sierra Nevada Southern California:Los Angeles Regional Seismic Experiment
2014/4/10
In 1999, the U.S. Geological Survey and the Southern California Earthquake Center (SCEC) collected refraction and low-fold reflection data along a 150-km-long corridor extending from the Santa Monica ...
Fault systems of the 1971 San Fernando and 1994 Northridge earthquakes, southern California: Relocated aftershocks and seismic images from LARSE II
crustal structure tectonics earthquakes seismic imaging southern California
2014/4/10
We have constructed a composite image of the fault systems of the M 6.7 San Fernando (1971) and Northridge (1994), California, earthquakes, using industry reflection and oil test well data in the uppe...
A Full Waveform Test of the Southern California Velocity Model by the Reciprocity Method
Reciprocity Southern California finite difference velocity model
2014/4/10
We apply the reciprocity method (EISNER and CLAYTON, 2001a) to compare the full waveform synthetic seismograms with a large number of observed seismograms. The reciprocity method used in the finite-di...
Coseismic Deformation from the 1999Mw7.1 Hector Mine, California, Earthquake as Inferred from InSAR and GPS Observations
Coseismic Deformation the 1999Mw7.1 Hector Mine California Earthquake Inferred from InSAR GPS Observations
2014/4/9
We use interferometric synthetic aperture radar (InSAR) and Global Positioning System (GPS) observations to investigate static deformation due to the 1999 Mw7.1 Hector Mine earthquake, that occurred i...
The complete (3-D) surface displacement field in the epicentral area of the 1999Mw7.1 Hector Mine earthquake, California, from space geodetic observations
The complete (3-D) surface displacement field the epicentral area Hector Mine earthquake California space geodetic observations
2014/4/9
We use Interferometric Synthetic Aperture Radar (InSAR) data to derive continuous maps for three orthogonal components of the co-seismic surface displacement field due to the 1999Mw7.1 Hector Mine ear...
Crustal structure of the Borderland-Continent Transition Zone of southern California adjacent to Los Angeles
California Borderland LARSE transition zone slab
2014/4/10
We use data from the onshore-offshore component of Los Angeles Region Seismic Experiment (LARSE) to model the broad-scale features of the midcrust to upper mantle beneath a north-south transect that s...