Present-day crustal deformation along the Philippine Fault in Luzon, Philippines

Yu, Shui-Beih; Hsu, Ya‐Ju; Bacolcol, T.; Yang, Chia-chu; Tsai, Yi Yu; Solidum, R.

doi:10.1016/j.jseaes.2010.12.007

Cited by 41 publications

(27 citation statements)

References 33 publications

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“…We take the initial values of the Euler pole (9.3°N, 118.3°E, 5.5 Myr À1 ) between the Luzon block (LU) and Sunda block (SU) from Rangin et al (1999) and remove interseismic strain accumulation along the Philippine fault from Yu et al (2011). They show that the geodetic long-term slip rates on the Philippine fault increase from 24 mm/yr in northern Luzon to 40 mm/yr in southern Luzon.…”

Section: Methodsmentioning

confidence: 99%

“…A least squares linear fit is used to estimate station velocity from station position time series. The ITRF2005 velocities are transformed into the Sunda fixed reference frame (Yu et al, 2011). The station velocities with respect to the Sunda Plate are about 49-85 mm/yr, in the west-northwest (WNW) to northwest (NW) directions and gradually decrease from north to south (Fig.…”

Section: Gpsmentioning

confidence: 99%

“…The oblique convergence is partitioned into a 40-90 mm/yr trench normal component on the subduction thrust and a $25 mm/yr component of sinistral slip along the Philippine fault ( Fig. 1a-b) (Barrier et al, 1991;Aurelio, 2000;Megawati et al, 2009;Yu et al, 2011). Convergence also exists to the east of Luzon along the East Luzon Trough but it is insignificant as this trough is nearly entirely shifted by the arrival of the Benham plateau (Karig, 1983;Lewis and Hayes, 1984).…”

Section: Introductionmentioning

confidence: 99%

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Plate coupling along the Manila subduction zone between Taiwan and northern Luzon

Hsu

Song

et al. 2012

Journal of Asian Earth Sciences

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Section: Methodsmentioning

confidence: 99%

Section: Gpsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Plate coupling along the Manila subduction zone between Taiwan and northern Luzon

Hsu

Song

et al. 2012

Journal of Asian Earth Sciences

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“…Hsu et al [] removed the effect of interseismic deformation from the Philippine Fault and solely examined the strain accumulation on the Manila subduction zone. Yu et al [] inferred the locking depth and slip‐deficit rate on the Philippine Fault using a two‐dimensional dislocation model. To gain a comprehensive understanding of the processes that contribute to observed deformation, we deployed 31 continuous GPS stations (cGPSs) since 2008 and increased the survey‐mode station density by a factor of 2 in central and northern Luzon (Figure b).…”

Section: Introductionmentioning

confidence: 99%

Interseismic deformation and moment deficit along the Manila subduction zone and the Philippine Fault system

Hsu

Loveless

et al. 2016

JGR Solid Earth

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We examine interseismic coupling of the Manila subduction zone and fault activity in the Luzon area using a block model constrained by GPS data collected from 1998 to 2015. Estimated long‐term slip rates along the Manila subduction zone show a gradual southward decrease from 90–100 mm/yr at the northwest tip of Luzon to 65–80 mm/yr at the southern portion of the Manila Trench. We provide two block models (models A and B) to illustrate possible realizations of coupling along the Manila Trench, which may be used to infer future earthquake rupture scenarios. Model A shows a low coupling ratio of 0.34 offshore western Luzon and continuous creeping on the plate interface at latitudes 18–19°N. Model B includes the North Luzon Trough Fault and shows prevalent coupling on the plate interface with a coupling ratio of 0.48. Both models fit GPS velocities well, although they have significantly different tectonic implications. The accumulated strain along the Manila subduction zone at latitudes 15–19°N could be balanced by earthquakes with composite magnitudes of Mw 8.8–9.2, assuming recurrence intervals of 500–1000 years. GPS observations are consistent with full locking of the majority of active faults in Luzon to a depth of 20 km. Inferred moments of large inland earthquakes in Luzon fall in the range of Mw 6.9–7.6 assuming a recurrence interval of 100 years.

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“…Geodynamic maps of (a) Taiwan, (b) Papua New Guinea, and (c) Timor where arc‐continent collisions propagate along the plate boundary. GPS vectors for Taiwan, Ryukyu, and Philippines [ Yu et al , 1997; Nakamura , 2004; Yu et al , 2012], GPS vectors for Timor [ Nugroho et al , 2009], and GPS vectors for Papua New Guinea [ Wallace et al , 2004]. Holocene volcanoes [ Siebert and Simkin , 2002].…”

Section: Introductionmentioning

confidence: 99%

Fore‐arc deformation at the transition between collision and subduction: Insights from 3‐D thermomechanical laboratory experiments

2012

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[1] Three-dimensional thermomechanical laboratory experiments of arc-continent collision investigate the deformation of the fore arc at the transition between collision and subduction. The deformation of the plates in the collision area propagates into the subduction-collision transition zone via along-strike coupling of the neighboring segments of the plate boundary. In our experiments, the largest along-strike gradient of trench-perpendicular compression does not produce sufficiently localized shear strain in the transition zone to form a strike-slip system because of the fast propagation of arc lithosphere failure. Deformation is continuous along-strike, but the deformation mechanism is three-dimensional. Progressive along-strike structural variations arise because coupling between neighboring segments induces either advanced or delayed failure of the arc lithosphere and passive margin. The modeling results suggest that orogenic belts should experience deeper subduction of continental crust and hence higher-pressure metamorphism where the two plates first collided than elsewhere along the plate boundary where collision subsequently propagated. Furthermore, during the initial stage of collision the accretionary wedge is partially subducted, which leads to lubrication of the interplate zone and a reduction of shear traction. Therefore, a large convergence obliquity angle does not produce a migrating fore-arc sliver. Rather, the pressure force generated by subduction of the buoyant continental crust causes fore-arc motion. It follows that convergence obliquity during collision does not yield trench-parallel deformation of the fore arc and its influence on the collision process is limited. However, convergence obliquity may control the geometry of the active margin during the oceanic subduction stage prior to collision, and inherited structures may influence the propagation mechanism.Citation: Boutelier, D., O. Oncken, and A. Cruden (2012), Fore-arc deformation at the transition between collision and subduction: Insights from 3-D thermomechanical laboratory experiments, Tectonics, 31, TC2015,

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Present-day crustal deformation along the Philippine Fault in Luzon, Philippines

Cited by 41 publications

References 33 publications

Plate coupling along the Manila subduction zone between Taiwan and northern Luzon

Plate coupling along the Manila subduction zone between Taiwan and northern Luzon

Interseismic deformation and moment deficit along the Manila subduction zone and the Philippine Fault system

Fore‐arc deformation at the transition between collision and subduction: Insights from 3‐D thermomechanical laboratory experiments

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