Geodetic constraints on the rigidity and relative motion of Eurasia and North America

Коган, М. Н.; Steblov, G. M.; King, Robert W.; Herring, T. A.; Frolov, D. I.; Egorov, S. G.; Levin, Vasily Ye.; Lerner-Lam, A.; Jones, A.

doi:10.1029/2000gl011422

Cited by 76 publications

(73 citation statements)

References 18 publications

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“…The location of the new geologic pole is close to that of the NUVEL-1A EU^NA pole, but has much smaller con¢dence limits that re£ect the signi¢-cant increase in the number of data used to derive the new angular velocity vector. The northerly location for the new best-¢tting geodetic pole is similar to previously published GPS-and VLBIbased models for EU^NA motion [10,15,18,19].…”

Section: Eurasia^north Americasupporting

confidence: 65%

Evidence for a post-3.16-Ma change in Nubia–Eurasia–North America plate motions?

Calais

DeMets

Nocquet

2003

Earth and Planetary Science Letters

168

140

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Section: Eurasia^north Americasupporting

confidence: 65%

Evidence for a post-3.16-Ma change in Nubia–Eurasia–North America plate motions?

Calais

DeMets

Nocquet

2003

Earth and Planetary Science Letters

168

140

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“…[34] A total of 71 stations was selected to represent plate motions, starting from the choice as in published studies of the plate kinematics (Table 4 and Figure 1b) [Dixon et al, 1996;Kogan et al, 2000;Beavan et al, 2002;Sella et al, 2002;Kreemer et al, 2003;Steblov et al, 2003;Prawirodirdjo and Bock, 2004]. In contrast with our selection, Argus [2007] included many more GPS stations in western Europe; we preferred less dense sampling of that region to ensure a proper contribution of Siberian stations to the estimated motion of the Eurasian plate.…”

Section: Choice Of Plates and Of Plate-defining Stationsmentioning

confidence: 99%

“…[7] The model of the plate kinematics presented here addresses the problem debated since the beginning of the space geodesy, How big are disagreements between the current plate motions and the motions averaged over several million years, the ''geologic'' timescale [Argus and Heflin, 1995;Larson et al, 1997;DeMets and Dixon, 1999;Kogan et al, 2000;Beavan et al, 2002;Sella et al, 2002;Calais et al, 2003a;Steblov et al, 2003]? Some discrepancies between geodetic and geologic models were resolved due to improvements in the geologic plate model based on updated marine magnetic surveys [DeMets and Dixon, 1999;Calais et al, 2003a].…”

Section: Introductionmentioning

confidence: 99%

Current global plate kinematics from GPS (1995–2007) with the plate‐consistent reference frame

Коган¹,

Steblov²

2008

J. Geophys. Res.

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[1] We present the vectors of rotation of 10 major lithospheric plates, estimated from continuous GPS observations at 192 globally distributed stations; 71 stations were selected as representing stable plate regions. All days for the period 1995.0-2007.0 were included in the analysis. In contrast to previous GPS plate models, our model is independent of international terrestrial reference frames (ITRF). The origin of our plate-consistent reference frame is the center of plate rotation (CP) rather than the center of mass of the entire Earth's system (CM) as in recent versions of ITRF. We estimate plate rotations and CP by minimizing the misfit between the horizontal velocities predicted by the plate model and the observed GPS velocities. If any version of ITRF is used as the reference frame, the drift of the ITRF origin relative to CP cannot be neglected in estimation of plate rotation vectors and plate-residual station velocities. The model of the plate kinematics presented here addresses the problem debated since the beginning of the space geodesy: how big are disagreements between the current plate motions and the motions averaged over several million years? We compare the vectors of relative plate rotations estimated here with the published vectors from GPS and geologic models. We also discuss the integrity of individual plates as exhibited by plate-residual station velocities. For seven largest plates, the RMS value of plate-residual station velocities in stable plate interiors is 0.5-0.9 mm/a; this value is an upper bound on deviation of real plates from infinite stiffness.

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“…1). No fewer than six different Euler rotation poles for the Amurian/Eurasia motion have been proposed to date Seno, 1998, 2000;Heki et al, 1999;Kogan et al, 2000;Sella et al, 2002;Calais et al, 2003;Kreemer et al, 2003), whereas the Amurian plate has been shown to have a different motion from that of the Eurasian plate (Petit and Fournier, 2005).…”

Section: Introductionmentioning

confidence: 99%

Present-day crustal motion in northeast China determined from GPS measurements

Meng

Shen

et al. 2006

Earth Planet Sp

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GPS measurements carried out between 1997 and 2005 at 37 stations distributed throughout northeast China place indicate the presence of constraints on the present-day crustal motion in this region. Velocity vectors relative to Eurasia are very small, only 1.58 mm/yr on average, indicating that the region is generally stable. With the exception of five stations that show significant motion at the 95% confidence level, the insignificant motion of most stations precludes a clear association of their velocities with the rotation of a separate rigid microplate, suggesting that northeast China belongs to Eurasia plate. The velocities of several stations in the southwestern corner of the studied region consistently point to the southeast. This is most probably a distant effect of the eastward motion of northern Tibet. Small velocities of the stations of around the time of the 1999 M W = 7.1 and 2002 M W = 7.3 deep-focus earthquakes, which occurred in Wangqing county, suggest that these earthquakes did not cause wide-spread deformations to the shallow crust.

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Geodetic constraints on the rigidity and relative motion of Eurasia and North America

Abstract: Abstract.GPS

Cited by 76 publications

References 18 publications

Evidence for a post-3.16-Ma change in Nubia–Eurasia–North America plate motions?

Evidence for a post-3.16-Ma change in Nubia–Eurasia–North America plate motions?

Current global plate kinematics from GPS (1995–2007) with the plate‐consistent reference frame

Present-day crustal motion in northeast China determined from GPS measurements

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