GCubed: Geochemistry, Geophysics, Geosystems

Volume 15, Issue 11 November 2014


The role of elasticity in slab bending

pp 4507-4525

DOI: 10.1002/2014GC005535

Loic Fourel, Saskia Goes, Gabriele Morra

Keypoints:

Derivation of a scaling law between viscoelastic slabs geometry and rheology

Elastically stored energy favors retreating modes via unbending

Contribution of elasticity may facilitate rupture in larger earthquakes

Abstract | Full Text | PDF |


Segmentation of plate coupling, fate of subduction fluids, and modes of arc magmatism in Cascadia, inferred from magnetotelluric resistivity

pp 4230-4253

DOI: 10.1002/2014GC005509

P. E. Wannamaker, R. Evans, P. A. Bedrosian, M. J. Unsworth, V. Maris, R. S. McGary

Keypoints:

Higher resistivity with increased coastal plate coupling implies lesser fluid

Low-resistivity fluid coincides with eclogitization and slow-slip earthquakes

Resistivity structure of arc melt source reflects slab inputs and state of stress

Abstract | Full Text | PDF |


Volume 15, Issue 10 October 2014


A geodetic plate motion and Global Strain Rate Model

pp 3849-3889

DOI: 10.1002/2014GC005407

C. Kreemer, G. Blewitt, E. C. Klein

Keypoints:

A data set of ~22,500 horizontal geodetic velocities is compiled

Geodetic plate motions for 36 plates are estimated

A new velocity gradient tensor field for plate boundary zones is modeled

Abstract | Full Text | PDF |


Volume 15, Issue 9 September 2014


The magnitude distribution of dynamically triggered earthquakes

pp 3688-3697

DOI: 10.1002/2014GC005404

Stephen Hernandez, Emily E. Brodsky, Nicholas J. van der Elst

Keypoint:

Magnitude distributions of triggered and untriggered small quakes are indistinguishable

Abstract | Full Text | PDF |


A family of repeating low-frequency earthquakes at the downdip edge of tremor and slip

pp 3713-3721

DOI: 10.1002/2014GC0054049

Justin R. Sweet, Kenneth C. Creager, Heidi Houston

Keypoints:

The 9000 low‐frequency earthquakes mostly locate within a circle of 300 m radius.

LFEs cluster into swarms during which amplitudes systematically increase.

Observed LFE moments yield only up to 20% of predicted slip.

Abstract | Full Text | PDF | Supporting Information



G-Cubed


Deformation of Mexico from continuous GPS from 1993 to 2008 (DOI: 10.1029/2008GC002278)
Marquez-Azua and DeMets, 2009


How do “ghost transients” from past earthquakes affect GPS slip rate estimates on southern California faults? (DOI: 10.1002/ggge.20080)
Hearn et al., 2013


Decadal volcanic deformation in the Central Andes Volcanic Zone revealed by InSAR time series (10.1002/ggge.20074)
S.T. Henderson and M.E. Pritchard, 2013


Tidal Modulation of Continuous Non-Volcanic Seismic Tremor in the Chile Triple Junction Region (10.1002/ggge.20091)
Gallego et al., 2013


Slow slip and tremor search at Kilauea Volcano, Hawaii (doi: 10.1002/ggge.20044)
Montgomery-Brown et al., 2013


Microscopic elasticity and rate and state friction evolution laws (DOI: 10.1029/2012GC004393)
Sleep, N.H., 2012


Low frequency earthquakes below southern Vancouver Island (DOI: 10.1029/2012GC004391)
Bostock et al., 2012


Physical characteristics of subduction interface type seismologenic zones revisited (doi:10.1029/2010GC003230)
Heuret et al.


Organized melt, seismic anisotropy, and plate boundary lubrication (doi:10.1029/2010GC003296)
Holtzman and Kendall


A seismic swarm and regional hydrothermal and hydrologic perturbations: The northern Endeavor segment, February 2005 (doi:10.1029/2010GC003264)
Hooft et al.


Rapid, continuous streaking of tremor in Cascadia (doi:10.1029/2010GC003305)
Ghosh et al.


Global slab deformation and centroid moment tensor contraints on viscosity (doi:10.1029/2010GC003301)
Alpert et al.


Structural heterogeneity of the Longmenshan fault zone and the mechanism of the 2008 Wenchuan earthquake (Ms 8.0) (doi:10.1029/2009GC002652)
Lei, J. and D. Zhao


Characterizing the seismogenic zone of a major plate boundary subduction thrust: Hikurangi Margin, New Zealand (doi:10.1029/2009GC002610)
Wallace et al.


Geodetic measurements of vertical crustal velocity in West Antarctica and the implications for ice mass balance (doi:10.1029/2009GC002642)
Bevis et al.


Advancing techniques to constrain the geometry of the seismic rupture plane on subduction interfaces a priori: Higher-order functional fits (doi:10.1029/2009GC002633)
Hayes et al.


Scalable robust solvers for unstructured FE geodynamic modeling applications: Solving the Stokes equation for models with large localized viscosity contrasts (doi:10.1029/2009GC002526)
Geenen, T., M. ur Rehman, S. P. MacLachlan, G. Segal, C. Vuik, A. P. van den Berg, and W. Spakman


A multiscale approach to model the anisotropic deformation of lithospheric plates (doi:10.1029/2009GC002423)
Knoll, M., A. Tommasi, R. E. Logé, and J. W. Signorelli


Insight into complex rupturing of the immature bending normal fault in the outer slope of the Japan Trench from aftershocks of the 2005 Sanriku earthquake (Mw = 7.0) located by ocean bottom seismometry (doi:10.1029/2009GC002415)
Hino, R., R. Azuma, Y. Ito, Y. Yamamoto, K. Suzuki, H. Tsushima, S. Suzuki, M. Miyashita, T. Tomori, M. Arizono, and G. Tange


Receiver function study of the Cascadia megathrust: Evidence for localized serpentinization (doi:10.1029/2009GC002376)
Nikulin, A., V. Levin, and J. Park


Interactions between a transform fault and arc volcanism in the Bismarck Sea, Papua New Guinea (doi:10.1029/2009GC002430)
Llanes, P., E. Silver, S. Day, and G. Hoffman


Lower crustal earthquakes near the Ethiopian rift induced by magmatic processes (doi:10.1029/2009GC002382)
Keir, D., I. D. Bastow, K. A. Whaler, E. Daly, D. G. Cornwell, and S. Hautot