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Seismic Tomography in Western US: Moschetti et al. [2007] and Yang & Ritzwoller [2008], Slides of Geology

Babasaheb Bhimrao Ambedkar UniversityGeology

Information on two seismic tomography studies conducted by moschetti et al. [2007] and yang and ritzwoller [2008] on the western united states. Both studies used different methods, ambient noise tomography and two plane-wave surface wave tomography respectively, to investigate the subsurface structure. The results show a clear depth dependence in group and phase velocities, which correlate well with geologic terrane boundaries. The interpretation of these results is mostly focused on technique development at this stage.

Typology: Slides

2012/2013

Uploaded on 07/19/2013

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Moschetti et al. [2007]
•Method: ambient noise tomography
(Rayleigh wave group velocities)
Results
•Clear depth dependence in group velocity maps
•Variations correlate well with geologic terrane
boundaries
Interpretation
•Minimal; at this stage, mostly focusing on technique
development
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Download Seismic Tomography in Western US: Moschetti et al. [2007] and Yang & Ritzwoller [2008] and more Slides Geology in PDF only on Docsity!

Moschetti et al. [200 7 ]

• Method: ambient noise tomography

(Rayleigh wave group velocities)

Results

• Clear depth dependence in group velocity maps

• Variations correlate well with geologic terrane

boundaries

Interpretation

• Minimal; at this stage, mostly focusing on technique

development

Yang and Ritzwoller [2008]

Method: two plane-wave surface wave tomography

(Rayleigh wave phase velocities)

Results

• TPWT and ANT results at similar periods yield similar

results

• Variations correlate well with geologic terrane

boundaries

• General agreement with shallow mantle body wave

imaging results

Interpretation

• Minimal; at this stage, mostly focusing on technique

development

Further Discussion

Improvements / Future Work

• Lateral/depth resolution: is it good enough for

interpreted structures in each model?

• Were figures good? How could they have improved

them?

• General ways to make papers better/more clear?