September 2013, Volume 6 No 9 pp673-800

The proportionality between relative plate velocity and seismicity in subduction zones

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pp780 - 784

Satoshi Ide

doi:10.1038/ngeo1901

The magnitude and rate of seismicity differ between subduction zones. Calculations of background seismicity rates, based on a global model of subduction zone seismicity, reveal a positive correlation between relative plate velocity and background seismicity, yet only the seismically quieter zones seem capable of generating magnitude 9 earthquakes.

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Structure of orogenic belts controlled by lithosphere age

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pp785 - 789

Frédéric Mouthereau, Anthony B. Watts & Evgueni Burov

doi:10.1038/ngeo1902

The influence of inherited tectonic-plate strength on the structure of mountain belts is debated. Analysis of geological data collected from mountain belts worldwide shows that the style and amount of deformation in a mountain range are strongly influenced by the age and strength of the colliding plates.

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August 2013, Volume 6 No 8 pp585-672

Focus: Shaken-crust

Subsidence at southern Andes volcanoes induced by the 2010 Maule, Chile earthquake

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pp632 - 636

M. E. Pritchard, J. A. Jay, F. Aron, S. T. Henderson & L. E. Lara

doi:10.1038/ngeo1855

Large earthquakes in subduction zones can affect nearby volcanoes. Analysis of ground deformation following the 2010 earthquake in Maule, Chile, shows that some volcanoes subsided by up to 15cm, probably because of quake-triggered release of hydrothermal fluids.

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See also: Letter by Takada & Fukushima | News and Views by Jónsson


Focus: Shaken-crust

Volcanic subsidence triggered by the 2011 Tohoku earthquake in Japan

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pp637 - 641

Youichiro Takada & Yo Fukushima

doi:10.1038/ngeo1857

The 2011 Tohoku earthquake caused high levels of crustal deformation in Japan. Analysis of satellite radar and GPS data show that the earthquake caused nearby volcanic regions to subside instantaneously, creating elliptical depressions that are parallel to the direction of quake-induced crustal extension.

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See also: Letter by Pritchard et al. | News and Views by Jónsson


Focus: Shaken-crust

Lusi mud eruption triggered by geometric focusing of seismic waves

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pp642 - 646

M. Lupi, E. H. Saenger, F. Fuchs & S. A. Miller

doi:10.1038/ngeo1884

The Lusi mud eruption in Indonesia has been ongoing since 2006. Numerical simulations show that a parabolic-shaped layer in the rock surrounding the site of the Lusi eruption could have amplified and focussed incoming seismic energy from an earthquake, which then triggered the mud eruption.

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See also: News and Views by Davis


Frictional-faulting model for harmonic tremor before Redoubt Volcano eruptions

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pp652 - 656

Ksenia Dmitrieva, Alicia J. Hotovec-Ellis, Stephanie Prejean & Eric M. Dunham

doi:10.1038/ngeo1879

Volcanic tremor can be caused by small earthquakes occurring within the volcano. Mechanical modelling of volcanic tremor generated at Redoubt Volcano, Alaska, suggests that high-frequency tremor is the result of stick–slip motion in faults within the volcano conduit.

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July 2013, Volume 6 No 7 pp505-584

Barbados-based estimate of ice volume at Last Glacial Maximum affected by subducted plate

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pp553 - 557

Jacqueline Austermann, Jerry X. Mitrovica, Konstantin Latychev & Glenn A. Milne

doi:10.1038/ngeo1859

Coral records from the Barbados have been used to infer that, due to ice expansion, sea level was 120m lower than today during the Last Glacial Maximum. A 3D simulation of the mantle in this region suggests these estimates were biased by the presence of a subducted slab, and indicates the sea-level difference was closer to 130 m.

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Episodic fault creep events in California controlled by shallow frictional heterogeneity

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pp566 - 570

Meng Wei, Yoshihiro Kaneko, Yajing Liu & Jeffrey J. McGuire

doi:10.1038/ngeo1835

Stable fault slip, or creep, is thought to occur in unconsolidated sediments that form shallow parts of continental strike-slip faults. Numerical simulations show that creep events observed on faults in California also require the presence of a shallow, unstable layer of rock, the thickness of which influences the duration of the creep event.

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June 2013, Volume 6 No 6 pp413-503

Andean structural control on interseismic coupling in the North Chile subduction zone

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pp462 - 467

Marta Béjar-Pizarro, Anne Socquet, Rolando Armijo, Daniel Carrizo, Jeff Genrich & Mark Simons

doi:10.1038/ngeo1802

Ridges on the down-going plate in a subduction zone can segment the seismogenic zone and influence earthquake occurrence, but the role of the overriding plate is unclear. InSAR and GPS satellite measurements indicate that segmentation of the subduction zone in northern Chile correlates with a 1-km-high coastal scarp, implying that overriding plate structure can influence seismicity.

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Subject terms: Seismology | Structural geology, tectonics and geodynamics


Slip weakening as a mechanism for slow earthquakes

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pp468 - 472

Matt J. Ikari, Chris Marone, Demian M. Saffer & Achim J. Kopf

doi:10.1038/ngeo1818

Slow earthquakes form part of a spectrum of fault behaviour between steady creep and fast rupture during a normal earthquake. Laboratory simulations of slow slip in rock samples taken from the Nankai subduction zone, Japan, reveal similar characteristics to fast earthquakes, implying that some slow slip events could be prematurely arrested earthquakes.

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| Full Text| PDF (1,226 KB) Subject terms: Seismology | Structural geology, tectonics and geodynamics

Permanent deformation caused by subduction earthquakes in northern Chile

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pp492 - 496

A. Baker, R. W. Allmendinger, L. A. Owen & J. A. Rech

doi:10.1038/ngeo1789

Earth’s crust is thought to eventually rebound following an earthquake so that deformation is not permanent. Field analysis in the Atacama Desert, northern Chile, however, identifies numerous large cracks in the crust, implying that the crust here has been permanently deformed by thousands of earthquakes that have occurred over the past million years.

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Subject terms: Structural geology, tectonics and geodynamics | Seismology



Nature Geoscience


Recent extensional tectonics on the Moon revealed by the Lunar Reconnaissance Orbiter Camera (ngeo1387)
Watters et al.


Stick-slip advance of the Kohat Plateau in Pakistan (ngeo1373)
Satyabala et al.


Anisotropic uppermost mantle in young subducted slab underplating Central Mexico (ngeo1342)
Song and Kim


Modern-style plate subduction preserved in the Paleoproterozoic West African craton (ngeo1321)
Ganne et al.


Tibetan plate overriding the Asian plate in central and northern Tibet (ngeo1309)
Zhao et al.


December Issue focus on Ocean Islands - plumes, hot spots, deep mantle (ngeo1328, ngeo1331, ngeo1263, ngeo1295)


Increased capture of magma in the crust promoted by ice-cap retreat in Iceland (ngeo1269)
Hooper et al.


Superficial simplicity of the 2010 El Mayor-Cucapah earthquake of Baja California in Mexico (ngeo1213)
Wei et al.


A continuum of stress, strength and slip in the Cascadia subduction zone (ngeo1215)
Wech and Creager


Rupture of deep faults in the 2008 Wenchuan earthquake and uplift of the Longmen Shan (ngeo1210)
Qi et al.


Loading of the San Andreas fault by flood-induced rupture of faults beneath the Salton Sea (ngeo1184)
Brothers et al.


Updip rupture of the 2004 Sumatra earthquake extended by thick indurated sediments (ngeo1176)
Gulick et al.


Orogenic-wedge deformation and potential for great earthquakes in the central Andean backarc (ngeo1143)
Brooks et al.


Triggered creep as a possible mechanism for delayed dynamic triggering of tremor and earthquakes (ngeo1141)
Shelly et al.


Characteristic slip for five great earthquakes along the Fuyun fault in China (ngeo1158)
Klinger et al.


Rapid tremor reversals in Cascadia generated by a weakened plate interface (ngeo1157)
Houston et al. (including Brent!)


Absence of remotely triggered large earthquakes beyond the mainshock region (ngeo1110)
Parsons and Velasco


Magnetotelluric image of the fluid cycle in the Costa Rican subduction zone (ngeo1041)
Worzewski et al.


Dominant role of tectonic inheritance in supercontinent cycles (ngeo1080)
Audet and Burgmann.


Limited overlap between the seismic gap and coseismic slip of the great 2010 Chile earthquake (ngeo1073)
Lorito et al..


Complex and variable crustal and uppermost mantle seismic anisotropy in the western United States (ngeo1036)
Lin et al.


Miocene drainage reversal of the Amazon River driven by plate-mantle interaction (ngeo1017)
Shephard et al.


The many surface expressions of mantle dynamics (ngeo1020)
Braun


Localized damage caused by topographic amplification during the 2010 M 7.0 Haiti earthquake (ngeo988)
Hough et al.


High tsunami frequency as a result of combined strike-slip faulting and coastal landslides (ngeo975)
Hornbach et al.


Seismic hazard of the Enriquillo-Plantain Garden fault in Haiti inferred from paleoseismology (ngeo991)
Prentice et al.


Transpressional rupture of an unmapped fault during the 2010 Haiti earthquake (ngeo992)
Calais et al.


Complex rupture during the 12 January 2010 Haiti earthquake (ngeo977)
Hayes et al.


India-Asia convergence driven by the subduction of the Greater Indian continent (ngeo725)
Capitanio et al.


Slip-rate variability and distributed deformation in the Marmara Sea fault system (ngeo739)
Hergert & Heidbach


Towards absolute plate motions constrained by lower-mantle slab remnants (ngeo708)
van der Meer et al.


Distribution of melt beneath Mount St Helens and Mount Adams inferred from magnetotelluric data (ngeo703)
Hill et al.


Deep creep as a cause for the excess seismicity along the San Jacinto fault (ngeo684)
Wdowinski


Rock pulverization at high strain rate near the San Andreas fault (27 September 2009)
Doan and Gary


Slip maxima at fault junctions and rupturing of barriers during the 2008 Wenchuan earthquake (27 September 2009)
Shen et al.


Frictional resistance of faults during accelerating and decelerating earthquake slip (20 September 2009)
Sone and Shimamoto


Virtual seismometers in the subsurface of the Earth from seismic interferometry (30 August 2009)
Curtis et al.


Tectonic evolution of the Salton Sea inferred from seismic reflection data (26 July 2009)
Brothers et al.


Vertical mantle flow associated with a lithospheric drip beneath the Great Basin (24 May 2009)
West et al.


Volcanism in the Solar System (17 May 2009)
Wilson, L.


Intense localized rock uplift and erosion in the St. Elias orogen of Alaska (26 April 2009)
Enkelmann et al.