Data Services Products: EMC-TongaLau.Q.2019 3D attenuation models of the Tonga-Lau mantle wedge

Summary

TongaLau.Q.2019 is a set of 3D models of Qp, Qs, Qp/Qs, and Qk (bulk attenuation) of the Tonga-Lau mantle wedge based on the 2009-2010 Ridge2000 East Lau Spreading Center Imaging project.

Description

Name TongaLau.Q.2019
Title 3D attenuation models of the Tonga-Lau mantle wedge.
Type 3-D Tomography Earth Model
Sub Type Q-model
Year 2019
 
Short Description   3D models of Qp, Qs, Qp/Qs, and Qk (bulk attenuation) of the Tonga-Lau mantle wedge based on the 2009-2010 Ridge2000 East Lau Spreading Center Imaging project.
Authors:  
S. Shawn Wei
Department of Earth and Environmental Sciences
Michigan State University
East Lansing, MI 48824, USA

Douglas A. Wiens
Department of Earth and Planetary Sciences
Washington University
St. Louis, MO 63130, USA
 
Previous Model None
Reference Model None
Model Download TongaLau.Q.2019.nc (see metadata ), is the netCDF file for the model
Model Homepage
Depth Coverage 0 to 300 km, (best resolution 25-200 km)
Areal Coverage The Tonga-Lau-Fiji region (latitude: -24°/-15°, longitude: 176°/187°)
 
Data Set Description [Wei and Wiens (2019, JGR) ] The dataset includes the absolute values of Qp, Qs, Q/Qs, and Qk of the Tonga-Lau mantle wedge from body wave tomography inversions of t*(P) and t*(S).
Supplemental Information TongaLau.Q.2019-sup.cvs contains t* measurements and earthquake information. (The header explains each column)

Tomography models of bulk attenuation
Tomography models of bulk attenuation (a) and shear attenuation (b). The cross section is
perpendicular to the Tonga Trench. Black contours show the local melt production rate modeled
by Wei et al. [2016], starting from 1%/Myr with a 2%/Myr increment. Other features are plotted in
the same manner as Fig. 7a. Topography and bathymetry are plotted above the images with a
10-times vertical exaggeration. Red triangles and red inverted triangles represent the volcanic
arc and the back-arc spreading center, respectively. White circles indicate the relocated
intermediate-depth earthquakes less than 55 km away from the cross section [Wei et al., 2017]
delineating the Tonga slab.

Citations and DOIs

To cite the original work behind this Earth model:

  • Wei, S. S. and D. A. Wiens (2019), High bulk and shear attenuation due to partial melt in the Tonga-Lau back-arc mantle, J. Geophys. Res.: Solid Earth, 124, https://doi.org/10.1029/2019JB017527.

To cite IRIS DMC Data Products effort:

  • Trabant, C., A. R. Hutko, M. Bahavar, R. Karstens, T. Ahern, and R. Aster (2012), Data Products at the IRIS DMC: Stepping Stones for Research and Other Applications, Seismological Research Letters, 83(5), 846–854, https://doi.org/10.1785/0220120032.

DOI for this EMC webpage:

References:

  • Wei, S. S., Y. Zha, W. Shen, D. A. Wiens, J. A. Conder, and S. C. Webb (2016), Upper mantle structure of the Tonga-Lau-Fiji region from Rayleigh wave tomography, Geochem., Geophys., Geosyst., 17(11), 4705-4724, doi: https://doi.org/10.1002/2016GC006656.
  • Wei, S. S., D. A. Wiens, P. E. van Keken, and C. Cai (2017), Slab temperature controls on the Tonga double seismic zone and slab mantle dehydration, Science Adv., 3(1), e1601755, doi: https://doi.org/10.1126/sciadv.1601755.

Credits

  • Model provided by S. Shawn Wei

Timeline

2020-01-03
online

Categories

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