Data Services Products: EMC-LITHO1.0 An updated crust and lithospheric model of the Earth

Summary

LITHO1.0 (Pasyanos, Masters, Laske and Ma, 2014) is a 1° tessellated model of the crust and uppermost mantle of the earth, extending into the upper mantle to include the lithospheric lid and underlying asthenosphere. The netCDF version provided by EMC is a 1°-by-1° grid representation of LITHO1.0 model.

Description

Name LITHO1.0
Title An updated crust and lithospheric model of the Earth
Type Lithospheric Earth Model
Sub Type crust and uppermost mantle
Year 2014
   
Short
Description
   
The LITHO1.0 model (Pasyanos, Masters, Laske & Ma, 2014), is a 1° tessellated model of the crust and uppermost mantle of the earth, extending into the upper mantle to include the lithospheric lid and underlying asthenosphere. The model is parameterized laterally by tessellated nodes and vertically as a series of geophysically identified layers, such as water, ice, sediments, crystalline crust, lithospheric lid, and asthenosphere. LITHO1.0 was created by constructing an appropriate starting model, including CRUST1.0 as starting model for the crust. We then perturbed the model to fit high-resolution surface wave dispersion maps (Love, Rayleigh, group, phase) over a wide frequency band (5-40 mHz).
 
Each of the nodes has a unique profile where the layers are:
  1. water
  2. ice
  3. upper sediments
  4. middle sediments
  5. lower sediments
  6. upper crust
  7. middle crust
  8. lower crust
  9. lithospheric mantle (lid)
  10. asthenospheric mantle
  11. ak135
     
    Crustal parameterization was adopted from CRUST1.0 though the depth to Moho and a uniform perturbation in the crystalline crust was allowed in the inversions. Parameters of layer thickness, Vp, Vs, density, and Q (placeholder values) are given explicitly for all layers. The parameters below the asthenosphere blend into the ak135 model.
Authors:  
Mike Pasyanos
Atmospheric, Earth, and Energy Division
Lawrence Livermore National Laboratory
Livermore, CA, USA
 
Guy Masters
IGPP, Scripps Institution of Oceanography
U.C. San Diego
La Jolla, CA, USA
 
Gabi Laske
IGPP, Scripps Institution of Oceanography
U.C. San Diego
La Jolla, CA, USA
 
Zhitu Ma
Department of Earth and Planetary Sciences (formerly at IGPP)
Harvard University
Cambridge, Massachusetts, USA
 
Base Model
   
Model Download  
A compressed tar file containing the model in its native format and C++ source code to read it at any arbitrary location (access_litho). The C++ source code should compile with any standard compiler.

LITHO1.0.nc is the netCDF file for the above model on a 1°-by-1° grid. See LITHO1.0 metadata for a complete list of the model variables.
 
Model Homepage https://igppweb.ucsd.edu/~gabi/litho1.0.html
Depth Coverage -5 km to 320 km
Area Global
 

LITHO1.0
[Pasyanos et al., 2014] LITHO1.0 model shown at tessellation level 5. Globes indicate values for several key parameters: (a) the average crustal compressional wave velocity, (b) crustal thickness, (c) upper mantle compressional wave velocity, and (d) lithospheric thickness.

Citations and DOIs

To cite the original work behind this Earth model:

  • Pasyanos, M.E., T.G. Masters, G. Laske, and Z. Ma (2014). LITHO1.0: An updated crust and lithospheric model of the Earth, J. Geophys. Res., 119 (3), 2153-2173, https://doi.org/10.1002/2013JB010626.

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:

Credits

  • Model provided by Mike Pasyanos

Timeline

2020-09-16
online

Categories

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