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Preliminary reference earth model

- A. Dziewonski, Don L. Anderson
- Geology
- 1 June 1981

A large data set consisting of about 1000 normal mode periods, 500 summary travel time observations, 100 normal mode Q values, mass and moment of inertia have been inverted to obtain the radial… Expand

Determination of earthquake source parameters from waveform data for studies of global and regional seismicity

- A. Dziewonski, T.-A. Chou, J. Woodhouse
- Geology
- 10 April 1981

It is possible to use the waveform data not only to derive the source mechanism of an earthquake but also to establish the hypocentral coordinates of the ‘best point source’ (the centroid of the… Expand

The global CMT project 2004–2010: Centroid-moment tensors for 13,017 earthquakes

- G. Ekström, M. Nettles, A. Dziewonski
- Geology
- 1 June 2012

Earthquake moment tensors reflecting seven years of global seismic activity (2004–2010) are presented. The results are the product of the global centroid-moment-tensor (GCMT) project, which maintains… Expand

The Relative Behavior of Shear Velocity, Bulk Sound Speed, and Compressional Velocity in the Mantle: Implications for Chemical and Thermal Structure

- G. Masters, G. Laske, H. Bolton, A. Dziewonski
- Geology
- 18 March 2013

Despite immense progress in imaging seismic velocity anomalies in the mantle over the past 15 years, we still know relatively little about their physical cause. One way to shed some light on this… Expand

Anisotropic shear‐wave velocity structure of the Earth's mantle: A global model

- B. Kustowski, G. Ekström, A. Dziewonski
- Geology
- 1 June 2008

[1] We combine a new, large data set of surface wave phase anomalies, long-period waveforms, and body wave travel times to construct a three-dimensional model of the anisotropic shear wave velocity… Expand

A technique for the analysis of transient seismic signals

- A. Dziewonski, S. Bloch, M. Landisman
- Geology
- 1 February 1969

An analytical method, called the “multiple filter technique,” is shown to be a fast and efficient means of studying multi-mode dispersed signals. Amplitudes and phases, as functions of period and… Expand

The unique anisotropy of the Pacific upper mantle

- G. Ekström, A. Dziewonski
- PhysicsNature
- 9 July 1998

The development and interpretation of tomographic models of the Earth's mantle have usually proceeded under the assumption that fast and slow seismic velocity anomalies represent a spatially… Expand

Mapping the lower mantle: Determination of lateral heterogeneity in P velocity up to degree and order 6

- A. Dziewonski
- Geology
- 10 July 1984

The data from the International Seismological Centre bulletins for the years 1964–1979 are used to derive a three-dimensional model of lateral variations of the P velocity in the lower mantle. Unlike… Expand

Degree 12 model of shear velocity heterogeneity in the mantle

- Wei-jia Su, R. Woodward, A. Dziewonski
- Geology
- 10 April 1994

We obtain a three-dimensional (3D) model of shear wave velocity heterogeneity of the Earth's mantle by inverting a large set of seismic data consisting of 27,000 long-period seismograms and 14,000… Expand

An application of normal mode theory to the retrieval of structural parameters and source mechanisms from seismic spectra

- F. Gilbert, A. Dziewonski
- PhysicsPhilosophical Transactions of the Royal Society…
- 20 March 1975

A cyclic process of refining models of the mechanical structure of the Earth and models of the mechanism of one or more earthquakes is developed. The theory of the elastic-gravitational free… Expand

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