Crustal motion in E-and SE-Asia from GPS measurements

Michel, G; Becker, Matthias; Angermann, D; Reigber, Christoph; Reinhart, E.

doi:10.1186/bf03352270

Cited by 61 publications

(60 citation statements)

References 43 publications

(44 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, recent studies and particularly GPS analysis have revealed that Southeast Asia (the Sunda block) is moving separately from Eurasia and should be considered as a distinct plate (Michel et al, 2000;Bird, 2003;Simons et al, 2007). Yet, although Sunda is now widely regarded as a separate plate, the boundaries of the plate remain poorly defined and a subject of wide speculation (for example, Bird, 2003;Hall and Morley, 2004;Simons et al, 2007; Figure 1).…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

“…Recent studies of GPS data from Southeast Asia have provided new insights into the dynamics of the Sunda plate (Michel et al, 2000;Simons et al, 2007). In particular, Simons et al (2007) highlighted regions of intraplate deformation by subtracting absolute Sunda plate motion from the motion vector at each GPS station in order to yield residual velocities (i.e.…”

Section: Comparison Between Stress Orientations and Intraplate Motionsmentioning

confidence: 99%

See 1 more Smart Citation

Present-day stress field of Southeast Asia

et al. 2010

View full text Add to dashboard Cite

It is now well established that ridge push forces provide a major control on the plate-scale stress field in most of the Earth's tectonic plates. However, the Sunda plate that comprises much of Southeast Asia is one of only two plates not bounded by a major spreading centre and thus provides an opportunity to evaluate other forces that control the intraplate stress field. The Cenozoic tectonic evolution of the Sunda plate is usually considered to be controlled by escape tectonics associated with India-Eurasia collision. However, the Sunda plate is bounded by a poorly understood and complex range of convergent and strike-slip zones and little is known about the effect of these other plate boundaries on the intraplate stress field in the region. We compile the first extensive stress dataset for Southeast Asia, A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPTthe radiating stress patterns arising from the eastern Himalayan syntaxis. However, the present-day maximum horizontal stress is primarily oriented NW-SE in Borneo, a direction that may reflect plate-boundary forces or topographic stresses exerted by the central Borneo highlands. Furthermore, the South and Central Sumatra Basins exhibit a NE-SW maximum horizontal stress direction that is perpendicular to the Indo-Australian subduction front. Hence, the plate-scale stress field in Southeast Asia appears to be controlled by a combination of Himalayan orogeny-related deformation, forces related to subduction (primarily trench suction and collision) and intraplate sources of stress such as topography and basin geometry.

show abstract

Section: Accepted M Manuscriptmentioning

confidence: 99%

Section: Comparison Between Stress Orientations and Intraplate Motionsmentioning

confidence: 99%

Present-day stress field of Southeast Asia

et al. 2010

View full text Add to dashboard Cite

show abstract

“…A detailed analysis of the results can be found in Michel et al (2000) in this volume; therefore we give only a summary of the most important results. Figure 2 presents, in addition to the measured velocities, the geologic-geophysical velocities of the No-Net-Rotation (NNR) NUVEL-1A model (DeMets et al, 1994).…”

Section: Resultsmentioning

confidence: 99%

“…For a detailed discussion and comparisons to the results of other project carried out in this region cf. Michel et al (2000).…”

Section: Resultsmentioning

confidence: 99%

Improving the velocity field in South and South-East Asia: The third round of GEODYSSEA

et al. 2014

View full text Add to dashboard Cite

In the framework of the GEODYnamics of South and South-East Asia (GEODYSSEA) project a network of 42 stations was observed by GPS during two field campaigns in 1994 and 1996. BKG and GFZ realized a third observation of the complete network in 1998. The data was analyzed independently by two analysis centers and a precision of the coordinate solutions was found to be 4-7 mm for the horizontal, and 10 mm for the vertical component. Subsequently, these campaign solutions were merged into one unique solution, which was accurately mapped into the International Terrestrial Reference Frame of 1997 (ITRF97). The global accuracy of this solution with respect to ITRF97 is of the order of 10 mm, while the resolution of the relative horizontal velocities is estimated to be at the level of 2-3 mm/yr. Comparison of the new solution with the previously published GEODYSSEA solution indicates, that improved results for the motion of Sundaland, South China and the overall deformation in the area could be found. Improvements are due to the increased time span and due to a better connection to and the advances in the ITRF reference frame. The new set of coordinates and velocities is used as the basis for scientific interpretations, which have been and will be published in separate papers.

show abstract

“…The vertical faults in the western Sunda are the Sumatra fault and its submarine continuation located on the east side of the Nicobar and Andaman islands (e.g., Fitch, 1972;Curray et al, 1979;Curray, 2005;McCaffrey, 1991). With the advent of GPS, the kinematics of this region have been studied in more detail (Michel et al, 2000;Paul et al, 2001;Bock et al, 2003) and the model of the oblique convergence has been elaborated to investigate the internal deformation of the forearc block Genrich et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Moment release budget at oblique convergence margin as revealed by the 2004 Sumatra-Andaman earthquake

Oishi

Sato

2007

Earth Planet Sp

View full text Add to dashboard Cite

Based on the model of oblique convergence, we predicted the slip rate on the megathrust plate boundary in the western Sunda arc and compared it with the slip distribution of the 2004 M w 9.0 Sumatra-Andaman earthquake. The slip directions on the megathrust plate boundary, which are necessary for predicting the slip rate, were determined using the fault plane solutions of medium-sized earthquakes occurring for the last 30 years in the 2004 rupture zone. At long wavelengths the predicted slip rate correlates well with the latitudinal variation of the coseismic slip, suggesting that kinematics described by the model of oblique convergence operated over a long interseismic period and that the seismic coupling coefficient has been generally uniform along the strike of the rupture zone. Using the data for the same period of time, we estimated the total seismic moment released by the earthquakes on the Sumatra fault and its submarine continuation located on the backarc side of the Nicobar and Andaman islands. The ratio of the observed seismic moment to the seismic moment predicted from the model of oblique convergence is small. The residual may either be stored for generation of future earthquakes or was taken up by the fault creep at shallow depths.

show abstract

Crustal motion in E-and SE-Asia from GPS measurements

Cited by 61 publications

References 43 publications

Present-day stress field of Southeast Asia

Present-day stress field of Southeast Asia

Improving the velocity field in South and South-East Asia: The third round of GEODYSSEA

Moment release budget at oblique convergence margin as revealed by the 2004 Sumatra-Andaman earthquake

Contact Info

Product

Resources

About