Recent Plate Motions and Crustal Deformation

Lisowski, M.

doi:10.1002/rog.1991.29.s1.162

Cited by 5 publications

(3 citation statements)

References 157 publications

(103 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Interestingly, fault‐parallel horizontal displacement velocity v profiles across the fault can be adjusted by using the formulation proposed by Savage and Burford []:

v ((), y) = \frac{v_{0}}{π} normalarctan ((), \frac{y}{D l})

with v(y) the velocity at the distance y from the fault, V o the far‐field velocity (boundary or shearing velocity, relative plate motion), and Dl the locking depth. This formulation links the velocity of any point of the surface to its distance compared to the fault trace and to the depth limit of the locked portion of the fault which can be approximated as the brittle/ductile transition [ Weertman and Weertman , ; Savage and Burford , ; Savage , ; Lisowski , ]. This 2‐D model is often used to invert the slip rates and the locking depth of strike‐slip fault [e.g., Schmalzle et al ., ; Titus et al ., ].…”

Section: First Experimental Resultsmentioning

confidence: 99%

A new multilayered visco-elasto-plastic experimental model to study strike-slip fault seismic cycle

et al. 2015

View full text Add to dashboard Cite

Nowadays, technological advances in satellite imagery measurements as well as the development of dense geodetic and seismologic networks allow for a detailed analysis of surface deformation associated with active fault seismic cycle. However, the study of earthquake dynamics faces several limiting factors related to the difficulty to access the deep source of earthquake and to integrate the characteristic time scales of deformation processes that extend from seconds to thousands of years. To overcome part of these limitations and better constrain the role and couplings between kinematic and mechanical parameters, we have developed a new experimental approach allowing for the simulation of strike-slip fault earthquakes and analyze in detail hundreds of successive seismic cycle. Model rheology is made of multilayered visco-elasto-plastic analog materials to account for the mechanical behavior of the upper and lower crust and to allow simulating brittle/ductile coupling, postseismic deformation phase and far-field stress transfers. The kinematic evolution of the model surface is monitored using an optical system, based on subpixel spectral correlation of high-resolution digital images. First, results show that the model succeed in reproducing the deformation mechanisms and surface kinematics associated to the main phases of the seismic cycle indicating that model scaling is satisfactory. These results are comforted by using numerical algorithms to study the strain and stress distribution at the surface and at depth, along the fault plane. Our analog modeling approach appears, then, as an efficient complementary approach to investigate earthquake dynamics.

show abstract

“…Interestingly, fault‐parallel horizontal displacement velocity v profiles across the fault can be adjusted by using the formulation proposed by Savage and Burford []:

v ((), y) = \frac{v_{0}}{π} normalarctan ((), \frac{y}{D l})

Section: First Experimental Resultsmentioning

confidence: 99%

A new multilayered visco-elasto-plastic experimental model to study strike-slip fault seismic cycle

et al. 2015

View full text Add to dashboard Cite

show abstract

“…They also found that internal stability of the North American plate is better than 2 mm/year. The GSFC/NASA has released annual analysis results of geodetic VLBI (Ryan et al, 1993b) which have been used in studies of regional crustal deformation (Argus and Lyzenga, 1993;Feigl et al, 1993) and global tectonics (Lisowski, 1991;Fallon and Dillinger, 1992). Saucier and Humphreys (1993) combined VLBI results with geological slip rates and fault distribution to model the long term horizontal deformation in southern California.…”

Section: Plate Motion Studies By Vlbi and Gpsmentioning

confidence: 99%

A plate motion study using Ajisai SLR data

Sengoku¹

2014

Earth Planet Sp

View full text Add to dashboard Cite

Eight years of Ajisai SLR data were processed to determine the terrestrial reference frame and its time evolution. The typical precision and accuracy of the estimated geocenter position averaged over a year determined from a oneyear Ajisai SLR data set are 1 cm and 1.5 cm, respectively. The baselines between SLR stations away from plate boundaries show rates of change that are in good agreement with NUVEL-1A, ITRF93 and LAGEOS results but significant deviations from geologically determined plate motion models are found for stations in plate boundary regions. Velocities of the observation stations were estimated by a weighted least squares method. The Simosato SLR station, located 100 km away from the plate boundary between the Eurasian plate and the Philippine Sea plate, moves in the direction of the subduction of the Philippine Sea plate with respect to the Eurasian plate, which infers strong coupling of the two plates at the boundary. The motion of other stations at plate boundary regions is also discussed. This study is the first attempt to use Ajisai SLR data to determine the global terrestrial reference frame and its variation, thus independent of the previous SLR studies most of which were based on LAGEOS SLR analyses.

show abstract

“…Many of these studies have been based on the annually released analyses of VLBI data provided by the Goddard Space Flight Center (GSFC) VLBI group; the latest being given in Ryan et al [1993J. These analyses have been used by Argus and Gordon [1991] to study Sierra Nevada-North America motion; by Argus and Lyzenga [1993] to study deformation associated with subduction at the Japan Trench; and Lisowski [1991] as part of a study of global plate motions. Studies that used independent analyses of the VLBI data include Fallen and DilKnger[l992] which examined global piate motions; and Feigl et al [19931 which used a rigorous combination of VLBI and GPS data in Southern California to build a kinematic description of the accumulation of strain in that region from J9S4-1992.…”

Section: Contemporary Plate Motion and Regional Tectonic Analysesmentioning

confidence: 99%

VLBI data, acquisition, environmental effects

Herring¹

1995

Reviews of Geophysics

View full text Add to dashboard Cite

During this quadrennium, very long baseline interferometry (VLBI) data acquisition and system development has focused on improving the accuracy of the system sufficiently to allow the determination of reliable estimates of height variations. Associated with this aim has been improvements in the determinations of horizontal velocity fields, monitoring water vapor delay using interferometric methods, and improvements to Earth rotation measurements. The primary aims of the improvements to height measurement accuracy have been to directly measure the contemporary magnitudes of post glacial rebound, and to determine a height reference system for measuring global sea level rise. High frequency Earth rotation studies have been carried out to better define the transformation parameters from an inertial coordinate system to an Earth fixed one, and to better understand the coupling between the components of the atmosphere‐ocean‐solid Earth system. Two major VLBI campaigns were carried out in support of these studies: (1) Epoch‐92 in July 1992 and (2) Cont‐94 in January 1994. Each of these campaigns lasted approximately two‐weeks and involved multiple VLBI networks operating simultaneously in addition to other space geodetic systems operating during these periods.

show abstract

Recent Plate Motions and Crustal Deformation

Cited by 5 publications

References 157 publications

A new multilayered visco-elasto-plastic experimental model to study strike-slip fault seismic cycle

A new multilayered visco-elasto-plastic experimental model to study strike-slip fault seismic cycle

A plate motion study using Ajisai SLR data

VLBI data, acquisition, environmental effects

Contact Info

Product

Resources

About