Map
of California & Nevada earthquakes
Research Reports
Earthquake Source |
Regional Structure |
Global Structure
Geodetic/Geological Studies |
Special Networks/Experiments |
Unusual Seismic Signals |
Miscellaneous
Scientists at the Seismological Laboratory conduct research on earthquakes on both the regional and global scales. These summaries are taken from the Annual Report of the Berkeley Seismological Laboratory. You can also refer to the list of recent publications and to UC Berkeley press releases.
Earthquake Source studies
- Fault Slip Kinematics using Characteristic Microearthquakes
- Periodic Earthquake Rate Variations on the San Andreas Fault
- Periodic Pulsing of the San Andreas Fault: An Update
- Kinematic Models of Repeating Earthquakes
- Do Repeating Earthquakes talk to each other?
- Time-dependent depth distribution of aftershocks: Implications for fault mechanics and crust Rheology
- The Evolution of the Seismic-Aseismic Transition during the Earthquake Cycle: Constraints from the Time-Dependent Depth Distribution of Aftershocks
- Detection of Seismic Stress-Drop Anomalies in the Mendocino Transform Using Coda-Derived Spectra
- Long-Period Microtremor Observations in the Santa Clara Valley, California
- Excitation of Earth's Incessant Free Oscillations by Atmosphere-Ocean-Seafloor Coupling
- Episodic Tremor and Slip in the Southern Cascadia Subduction Zone
- Source Mechanisms of Volcanic Induced Seismicity - Miyakejima, Japan, 2000
- Measuring and Modeling Fluid Movements in Volcanoes: Insights from Continuous Broadband Seismic Monitoring at Galeras Volcano, Colombia
- Source studies in the Long Valley Volcanic Region
- Teleseismic and Regional Finite Fault Analysis
- Finite Source Modeling of Great Earthquakes
- Accuracy of the Hypocenter Location and Fault Plane Orientation for Near Realtime Finite Fault Inversion
- Development of Procedures for the Rapid Estimation of Ground Shaking
- Finite Fault Inversion of the Loma Prieta Earthquake Incorporating Complex Structure
- Source Rupture of the Aug. 17, 1999 Izmit/Turkey Earthquake
- 2004 Parkfield Earthquake
- 2003 San Simeon earthquake
- 1999 Chi-Chi earthquake
- 1999 Hector Mine earthquake
- Source Process of the October 16, 1999 Hector Mine Earthquake
- Coseismic Slip Distribution of the Mw 7.1 Hector Mine Earthquake from Space Geodetic Techniques
- Accelerated Stress Buildup on the Southern San Andreas fault and surrounding regions caused by Mojave desert earthquakes
- A New Spectral Ratio Method Using Narrow Band Coda Envelopes: Evidence for non-Self-Similarity in the Hector Mine Sequence
- San Francisco Bay Region Historical Earthquake Relocation Project
- Northern California Seismicity Project
- Recalibrating ML for CISN
- Source Process of Deep-focus Earthquakes
- Investigation of Deep Earthquake Mechanics
- Transient Velocity of Oceanic Lithosphere: a Mechanism for Remote Triggering of Earthquakes
- Moment-Length scaling of large strike-slip earthquakes and the strength of faults
- Strong Ground Motions Derived from Geodetic Slip Models
- Analysis of Bridge Structures Crossing Fault Rupture Zones: Seismic Ground Motion Simulation
- Is Earthquake Rupture Deterministic?
- Repeating Earthquakes on an Imbricated Thrust Fault in the Arc-Continent Collision Boundary of Eastern Taiwan
- Subsurface Creep From Repeating Earthquakes at the Juncture of the San Andreas and Calaveras Faults
- Slip of the 2004 Sumatra-Andaman Earthquake from Joint Inversion of Long Period Global Seismic Waveforms and GPS Static Offsets
- Accelerating Moment Release in Areas of High Stress? Preliminary Results
Regional Earth structure
- California and Western US
- Velocity structure and anisotropy of the western United States.
- Transitional Structure from Ocean to Continent in the Cape Mendocino Region
- Waveform Constrained Seismic Velocity Structure in Northern California
- Detection and location of potential sources of background low frequency surface wave energy
- The Fate of the Juan de Fuca Plate
- The Fate of the Juan de Fuca Plate: Implications for a Yellowstone Plume Head
- 3D Wave Propagation in the Santa Clara Valley
- Inversion for the Velocity Structure of the Santa Clara Valley, California
- A simple method for simulating microseism H/V spectral ratio in 3D structure
- Broadband Modeling of 3D velocity structure in the San Francisco Bay Area
- Inversion of the Teleseismic Observations for the Velocity Structure Within the Santa Clara Valley Basins
- 3D Simulations of Ground Motions of the 1989 Loma Prieta Earthquake Using the USGS SF06 Velocity Model
- Regional Attenuation Method Comparison for Northern California
- Regional Analysis of Attenuation: Comparison of 1D Methods in Northern California
- Other Regions
- Joint Inversion for 3D Velocity Structure of the Middle East and North Africa to Improve Nuclear Explosion Monitoring
- Development of a Regional Velocity Model Using 3D Broadband Waveform Sensitivity
- Improvements in Waveform Modeling and Application to Eurasian Velocity Structure
- Joint Inversion for 3D Velocity Structure of the Broader Africa-Eurasia Collision Region
- Non-linear 3D Born Shear Wave Tomography in Southeastern Asia
Global Earth Structure
- Mantle Structure
- Direct Inversion of Mode Data for Mantle Structure
- Inversion of Normal Mode Spectra for Mantle Structure
- Progress in modeling deep mantle isotropic shear and compressional velocity structure using waveform inversion
- On the Resolution of Density Structure in the Mantle
- Resolution of 3D density structure in the mantle using normal mode data
- Investigating mantle's density resolution using the neighborhood algorithm
- The effects of theoretical formalism and data selection scheme on mantle models derived from waveform tomography
- Asymptotic and non-asymptotic approaches in seismic waveform modeling and surface wave tomography
- The 3D shear velocity structure of the mantle from the inversion of body, surface, and higher mode waveforms
- Investigating Velocity Anisotropy in the Earth's Mantle
- Global anisotropy beneath continental roots
- A Three Dimensional Radially Anisotropic Model of Shear Velocity in the Whole Mantle
- High Resolution Anisotropic Structure of the North American Upper Mantle from Inversion of Body and Surface Waveform Data
- Radial and Azimuthal Anisotropic Structure of the North American Upper Mantle From Inversion of Surface Waveform Data
- Seismic Imaging of the Newberry Hotspot Track
- Modeling Electrical Conductivity in the Mantle
- Modeling Electrical Conductivity Anomalies Associated with an Upwelling Hot Plume
- The Pacific Plume as seen by S, ScS, and SKS
- Toward the Constraints on Lateral S Wave Velocity Gradients and the Shape of the Pacific Superplume
- Toward the Constraints on Lateral S Wave Velocity Gradients around the Pacific Superplume
- Travel time analysis of Sdiff, SKS and SKKS phases
- Superplumes from the core-mantle boundary to the base of the lithosphere: evidence from Q tomography
- Finite Boundary Perturbation Theory for the Elastic Equation of Motion
- Towards Inverting Seismic Waveform Data for Temperature and Composition of the Earth's Upper Mantle
- Applying the Spectral Element Method to Model 3D Attenuation in the Upper Mantle
- Inferring composition and temperature of the upper mantle from interpretation of long period seismic data and global attenuation measurements
- Q Constraints on Upper Mantle Temperature
- Applying the Spectral Element Method to Tomography: Crustal Effects
- Locating Scatterers in the Mantle Using Array Analysis of PKP Precursors from an Earthquake Doublet
- The Fate of the Juan de Fuca Plate
- The Fate of the Juan de Fuca Plate: Implications for a Yellowstone Plume Head
- Transition Zone
- D"
- Investigating Earth's Lower Mantle with Seismology
- Forward Modeling of S-SKS Differential Travel Times and D" Structure in 3D in the Central Pacific
- The effect of D" on PKP(AB-DF) travel time residuals and possible implications for inner core structure
- Modeling of D" by Using High Quality PKP(AB-DF) Datasets
- Lateral Heterogeneity in D'': Constraints From PKP and PcP Travel Time Data
- Short scale heterogeneity in the lowermost mantle: insights from PcP-P and ScS-S data
- Large Scale Anisotropy Near the Core-Mantle Boundary from Global Waveform Inversion
- Towards forward modeling of 3D heterogeneity at the base of the mantle
- Toward the Study of Earth Seismic Attenuation and the D" Layer with a Coupled Method of Spectral Elements and Modal Solution
- Using the couple method of spectral elements and modal solution to study the D" layer
- Global Waveform Tomography with Spectral Element Method
- Tests of Normal Mode Asymptotic Approximations against Computation Using the Spectral Element Method
- Inner Core
- Investigating Earth's Inner Core by using PKP waves
- Inner Core Anisotropy
- New constraints on deep earth heterogeneity and anisotropy from PKP(BC-DF) travel times
- Anomalous splitting of core sensitive modes: a reevaluation of possible interpretations
- Constraints on the Structure of the Inner Core from P'P'
- On the origin of complexity in PKP travel time data
- Constraints on Density and Shear Velocity Contrasts at Inner Core Boundary
- Hemispherical Transition of Seismic Attenuation at the Top of the Earth's Inner Core
- Constraints on Shear Wave Attenuation in the Earth's Inner Core from an observation of PKJKP
- Short Wavelength Topography on the Inner Core Boundary
- Test of Innermost Inner Core Anisotropic Models
- Anelasticity
- Frequency Dependent Elasticity Q Tomography of the Earth's Mantle using Long Period Waveforms
Geodetic/Geological Studies
- Active tectonics of the Adriatic region (central Mediterranean)
- Modeling Broadscale Deformation from Plate Motions and Elastic Strain Accumulation
- Strain Accumulation Along the Cascadia Subduction Zone
- Interseismic Crustal Deformation in Northern California
- Crustal Deformation along the northern San Andreas fault system
- Geodetic Studies in the San Francisco Bay area
- Time Dependent Fault Slip and Basin Subsidence Using InSAR
- Land uplift and subsidence in the Santa Clara Valley
- Inversions for buried slip along the northern Hayward fault from GPS and InSAR data
- Seismic potential of the northern Hayward fault from space based SAR interferom etry and GPS measurements
- Advances in InSar Techniques
- Application of point measurements from InSAR to study slow earthquakes
- Surface Creep Measurements from a Slow Earthquake on the San Andreas Fault Using InSAR
- Constraints on Frictional Heating of Faults from Fisson Track Thermochronology
- Evidence of Powerlaw Flow in the Mojave Mantle
- Geological Studies of Active Faulting in the Bay Region
- Modeling surface creep on the Hayward fault using rate-and-state friction
- Urban Geodesy: Monitoring active deformation near the Hayward fault
- The Bay Area Velocity Unification (BAVU); Bringing Together Crustal Deformation Observations from throughout the San Francisco Bay Area
- Slicing up the San Francisco Bay Area: Block Kinematics from GPS-derived Surface Velocities
- Surface Deformation and Fault Kinematics of the San Francisco Bay Area from PS-InSAR Analysis
- Creep on the Rodgers Creek Fault Identified Using PS-InSAR
- Asymmetric motion across the San Francisco Bay Area faults. Implications on the magnitude of future seismic events
- A Decade of InSAR Observation across the Creeping Segment of the San Andreas Fault
- GPS exploration of the elastic properties across and within the Northern San Andreas Fault zone and heterogeneous elastic dislocation models
- Intraplate Strain Accumulation in the New Madrid Seismic Zone
- Active Tectonics of Northeast Asia: Using GPS Velocities and Block Modeling to Test Okhotsk Plate Motion Independent from North America
- Independent Okhotsk and Amurian Microplate Tectonics of Northeast Asia
- The Spatial Pattern of Active Uplift in Eastern Taiwan
- Bayesian Inference of Lower-Crustal Viscosity Near the Kunlun Fault Based on Geologic, Geomorphic, and Geodetic Data
- The Adriatic Region: An Independent Microplate within the Africa-Eurasia Collision Zone
- Geodetically Constraining Indian Plate motion and Implications for Plate Boundary Deformation
- Large Scale Ground Deformation of Etna Observed by GPS Between 1994 and 2001
- Indian Plate Motion, Deformation, and Plate Boundary Interactions
Special Networks/Seismic Experiments
- Berkeley Digital Seismic Network
- Detection of Long Period Surface Wave Energy
- Local Seismicity recorded at MOD
- BDSN Surface Wave Magnitude Calculation
- Simultaneous Determination of Earthquake Location and Moment-Tensor Using Real-Time Data
- Hayward Fault Studies
- Parkfield Studies
- 1997-1998
- 1998-1999
- 1999-2000
- 2000-2001
- 2001-2002
- 2002-2003
- The Parkfield Earthquakes: Then and Now
- A View of the 2004 Parkfield Earthquake from INSAR
- Frictional Afterslip Following the 2004 Parkfield, California Earthquake
- Kinematic Models of Repeating Earthquakes
- Parkfield-Hollister Electromagnetic Monitoring Array
- MOISE and MOBB
- The MOISE experiment: Monterey Bay Ocean Bottom International Seismic Experiment
- Observations of Infragravity Waves at the Monterey Ocean Bottom Broadband Station (MOBB)
- Observations of Infragravity Waves at the Endeavour Ocean Bottom Broadband Seismic Station (KEBB)
- SAPSE - The Southern Alps Passive Seismic Experiment
Unusual Seismic Signals
- Insight into the Origin of Earth's Hum and Microseisms
- A Study of the Relation between Ocean Storms and the Earth's Hum
- Seismogram Scanning Project
- Measuring and Modeling Fluid Movements in Volcanoes: Insights from Continuous Broadband Seismic Monitoring at Galeras Volcano, Colombia
- Scanning of Unusual Seismicity in the Mendocino Triple Junction Region
- Hidden Dykes detected on Ultra Long Period seismic signals at Piton de la Fournaise volcano?
- Nonvolcanic Tremor
Miscellaneous
- Solar System
- Earthquake Early Warning
- Observation and Analysis of Vertical Electric Fields in the Earth
- A Comparison of Standard Inversion, Neural Networks and Support Vector Machines
- Using 1906 Simulations to Assess Performance of Northern California Networks
- CTBT Related Research
- Automated Moment Tensor Software at the Prototype International Data Center for the CTBT
- Identifying Isotropic Events Using an Improved Regional Moment Tensor Inversion Technique
- Research Projects under Lane Johnson
Earthquake Source |
Regional Structure |
Global Structure
Geodetic/Geological Studies |
Special Networks/Experiments |
Unusual Seismic Signals |
Miscellaneous
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Berkeley Seismological Lab
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Copyright 1995-2005, The Regents of the University of California.
Last modified: Wed Sep 17 09:20:44 PDT 2008