NORMAL MODE SEISMOLOGY

Supported by:

NSF - Division of Earth Sciences

Geophysics Program
Instrumentation and Facilities Program

Address questions and/or comments to resovsky@phys-geophys.colorado.edu

Updates

Scientists: Joe Resovsky, Mike Ritzwoller

Research Description

Note: The status of changes on these pages can be found by clicking Updates.

NORMAL MODE STRUCTURE COEFFICIENT CATALOGUE

Reference: New and Refined Constraints on 3-D Earth Structure from Normal Modes Below 3 mHz , Resovsky and Ritzwoller, 1998a (abstract)

Status

Status of the Analysis to Date

Tabulated Results

Table of Degenerate Frequencies and Qs

Self-Coupling Structure Coefficients

Estimates (README, structural degree 2, 4, 6, 8, 10, 12)

Uncertainties (README, structural degree 2, 4, 6, 8, 10, 12)

Cross-Coupling Generalized Structure Coefficients

Estimates (README, structural degree 1, 2, 3, 4, 5, 6)

Uncertainties (README, structural degree 1, 2, 3, 4, 5, 6)

Sensitivity Kernels (1, 2, PREM)

Even Degree Self-Coupling (degree 0, 2, 4, 6, 8, 10, 12)

Cross-Coupling (degree 1, 2, 3, 4, 5, 6)

Plotted Results (Branch Pages)

0S	3S	6S	0T
1S	4S	8S	1T
2S	5S		2T

Coupled Multiplets

3-D MANTLE MODELS

Reference: A Degree 8 Mantle Shear Velocity Model From Normal Mode Observations Below 3 mHz, Resovsky and Ritzwoller, 1998b. (abstract)

Maps of Degrees 1-8 Models at Representative Depths, Featuring the CU degree 8 mode model MM2_L12D8

*310 km*	*500 km*	*600 km*	*746 km*
*968 km*	*1165 km*	*1428 km*	*1690 km*
*1953 km*	*2249 km*	*2511 km*

animated GIF version

caption

REFERENCES

Related Papers:

Ritzwoller, M. H., G. Masters and F. Gilbert, Observations of anomalous splitting and their interpretation in terms of aspherical structure, J. Geophys. Res., 91, 10203-10228, 1986.
Masters, G. and M. H. Ritzwoller, Low frequency seismology and three dimensional structure: Observational aspects, in Mathematical Geophysics, A survey of recent developments in seismology and geodynamics, edited by N. J. Vlaar, G. Nolet, M. J. R. Wortel, and S. A. P. L. Cloetingh, Reidel Publ., Cordrecht, the Netherlands, 1987.
Ritzwoller, M. H., G. Masters and F. Gilbert, Constraining aspherical structure with low harmonic degree interaction coefficients: Application to uncoupled multiplets, J. Geophys. Res., 93, 6269-6396, 1988.
Resovsky, J.S. and M. H., Ritzwoller, Characterizing the long-period seismic effects of long-wavelength elastic and anelastic models, Geophys. J. Internatl., 117, 365 - 393, 1994.
Ritzwoller, M.H. and E.M. Lavely, Three-dimensional seismic models of the Earth's mantle, Revs. of Geophys., 33, 1-66, 1995.
Resovsky, J.S. and M. H. Ritzwoller, Constraining odd-degree mantle structure with normal modes, Geophys. Res. Letts., 22, 2301-2304, 1995.
Ritzwoller, M.H. and J.S. Resovsky, The feasibility of normal mode constraints on higher degree structures, Geophys. Res. Letts., 22, 2305-2308, 1995.
Resovsky, J.S. and M.H. Ritzwoller, New and refined constraints on 3-D Earth structure from normal modes below 3 mHz, J. Geophys. Res., 103, 783-810, 1998a.
Resovsky, J.S. and M.H. Ritzwoller, A degree 8 mantle shear velocity model from normal mode observations below 3 mHz, submitted to J. Geophys. Res., May 5, 1998b.

Related Abstracts

If you have questions, comments or suggestions, email Mike Ritzwoller at ritzwoller@phys-geophys.colorado.edu

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