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Earth and Planetary Science Letters, ISSN 0012-821X, 11/2014, Volume 405, pp. 231 - 243
We apply a nonlinear waveform inversion method that we developed previously ( ) to broadband ( ) core phase data recorded by global seismic arrays in order to... 
frequency dependence | waveform inversion | attenuation | simulated annealing | absorption band model | inner core | Inner core | Attenuation | Frequency dependence | Absorption band model | Waveform inversion | Simulated annealing | VELOCITY | PKP DATA | WAVE-FORM | MODEL | MANTLE | GEOCHEMISTRY & GEOPHYSICS | SEISMIC ATTENUATION | EQUATORIAL PATHS | GROWTH | BOUNDARY | PKP(DF) | Earth | Seismic waves | Core
Journal Article
PHYSICS OF THE EARTH AND PLANETARY INTERIORS, ISSN 0031-9201, 05/2014, Volume 230, pp. 15 - 27
We apply a waveform inversion method based on simulated annealing to complex core phase data observed by globally deployed seismic arrays, and present regional... 
Inner core | PKP DATA | OUTER CORE | SOLIDIFICATION | ANISOTROPY | Waveform inversion | GEOCHEMISTRY & GEOPHYSICS | DEPENDENT SEISMIC ATTENUATION | TRAVEL-TIMES | Simulated annealing | EQUATORIAL PATHS | Attenuation | CONSTRAINTS | PKIKP | PKP(DF)
Journal Article
Geophysical Journal International, ISSN 0956-540X, 06/2002, Volume 149, Issue 3, pp. 599 - 616
The effects of complex structure in the deep mantle and D ″ on PKP differential traveltimes should be estimated accurately in order to reach reliable... 
inner core anisotropy | PcP–P | traveltime | velocity structure in D | tomography | CMB | PKP and | CORE-MANTLE BOUNDARY | LATERAL HETEROGENEITY | TIMES | LOWERMOST MANTLE | SEISMIC VELOCITIES | INNER-CORE | GEOCHEMISTRY & GEOPHYSICS | DIFFRACTED WAVES | P-velocity structure in D | CENTRAL-PACIFIC | FREE OSCILLATIONS | PKP and PcP-P traveltime | PKP PHASES
Journal Article
ANNALS OF GEOPHYSICS, ISSN 1593-5213, 2014, Volume 57, Issue 6
A set of seismic observations which all sample the same structure in the same way should have zero variance. This is naturally the case if all sources are in... 
HETEROGENEITY | TOMOGRAPHY | GEOCHEMISTRY & GEOPHYSICS | MODELS | PKP | L-CURVE | CONVECTION | RESOLUTION | POSED PROBLEMS | WAVE VELOCITY | LOWER MANTLE
Journal Article
Physics of the Earth and Planetary Interiors, ISSN 0031-9201, 2008, Volume 167, Issue 3, pp. 155 - 160
Depth-dependent attenuation structure in the inner core below the northeast Pacific is studied utilizing the short-period Hi-net data. The commonly used method... 
Inner core | Heterogeneity | Seismic attenuation | Anisotropy | Seismic array | GEOCHEMISTRY & GEOPHYSICS | PKP DATA | TOP | VELOCITY STRUCTURE | anisotropy | seismic array | OUTER | MODEL | seismic attenuation | inner core | heterogeneity | Analysis
Journal Article
Physics of the Earth and Planetary Interiors, ISSN 0031-9201, 2003, Volume 135, Issue 1, pp. 27 - 46
We use a total of 839,369 PcP, PKPab, PKPbc, PKPdf, PKKPab, and PKKPbc residual travel times from [Bull. Seism. Soc. Am. 88 (1998) 722] grouped in 29,837... 
Excess ellipticity | Core radius | PKP | PcP | PKKP | Core–mantle boundary topography | Core-mantle boundary topography | EARTH | core-mantle boundary topography | DEEP-MANTLE | OUTER CORE | LOWERMOST MANTLE | excess ellipticity | INNER-CORE | ANISOTROPY | PHASES PKP | PKIKP TRAVEL-TIMES | GEOCHEMISTRY & GEOPHYSICS | FORCED NUTATIONS | core radius | RADIO INTERFEROMETRY
Journal Article
Physics of the Earth and Planetary Interiors, ISSN 0031-9201, 06/2006, Volume 156, Issue 1-2, pp. 21 - 40
The main goal of this study is to check the existence of an innermost inner core with a radius of about 300 km and a different anisotropy [Ishii, M.,... 
Finite-frequency kernels | Inner core | PKP(DF) traveltimes | Anisotropy | EARTH | HIGH-PRESSURE | CONVECTION | anisotropy | ELASTIC-ANISOTROPY | IRON | SEISMIC ANISOTROPY | GEOCHEMISTRY & GEOPHYSICS | finite-frequency kernels | TRAVEL-TIMES | FREE OSCILLATIONS | X-RAY | MAXWELL STRESSES | inner core
Journal Article
Geophysical Journal International, ISSN 0956-540X, 2002, Volume 149, Issue 3, pp. 599 - 616
The effects of complex structure in the deep mantle and D" on PKP differential traveltimes should be estimated accurately in order to reach reliable... 
Tomography | CMB | PKP and PcP-P traveltime | Inner core anisotropy | P-velocity structure in D
Journal Article
Geophysical Journal International, ISSN 0956-540X, 02/2006, Volume 164, Issue 2, pp. 441 - 448
Q P factor at the top of the inner core (IC) is derived using the amplitude spectral ratio (PKPbc versus PKPdf) method applied to the waveforms of suitable,... 
South America | Pacific Ocean | PKP‐phases attenuation | factor | inner core | amplitude spectral ratio | Innercore | PKP-phases attenuation | Amplitude spectral ratio | ROTATION | GEOCHEMISTRY & GEOPHYSICS | TRAVEL-TIMES | TONGA | Q(P) factor | Integrated circuits | Confidence intervals | Stations | Attenuation | Spectra | Quadratic programming | Seismic phenomena
Journal Article
Physics of the Earth and Planetary Interiors, ISSN 0031-9201, 12/2016, Volume 261, pp. 187 - 195
The dimensions and nature of multi-scale structural heterogeneities in the Earth's inner core (IC) provide important constraints on its mineralogy and... 
PKIKP TRAVEL-TIMES | GEOCHEMISTRY & GEOPHYSICS | PKP DATA | ATTENUATION | GROWTH | MODEL | INVERSION | ANISOTROPY | VELOCITIES | Earth | Anisotropy | Core
Journal Article
Journal of Geophysical Research - Solid Earth, ISSN 0148-0227, 12/2002, Volume 107, Issue B12, pp. 2380 - ESE 21-17
Journal Article
Geophysical Journal International, ISSN 0956-540X, 1995, Volume 123, Issue 2, pp. 572 - 587
The attenuation in the uppermost 500 km of the inner core is investigated at the global scale from the comparison of PKP(DF) and PKP(BC) phases recorded at... 
attenuation | PKP waves | inner core | quality factor | broad‐band seismology | SHORT-PERIOD | REFLECTIVITY METHOD | BROAD-BAND SEISMOLOGY | EARTHS CORE | INNER CORE | GEOCHEMISTRY & GEOPHYSICS | MODES | VELOCITY STRUCTURE | ATTENUATION | DIFFERENTIAL TRAVEL-TIMES | CONSTRAINTS | QUALITY FACTOR | BOUNDARY | LIQUID-CORE | PKP(BC) | PKP WAVES
Journal Article
Earth and Planetary Science Letters, ISSN 0012-821X, 07/2017, Volume 470, pp. 54 - 63
Seismic tomography resolves anomalies interpreted as oceanic lithosphere subducted deep into Earth's lower mantle. However, the fate of the compositionally... 
deep Earth | mantle dynamics | scattering | seismology | mantle structure | seismic arrays | TOMOGRAPHY | PACIFIC | PERIOD WAVE-FORMS | HETEROGENEITY | GEOCHEMISTRY & GEOPHYSICS | PKP | SHEAR-VELOCITY MODEL | ARRAY DATA | BOUNDARY | OCEANIC-CRUST | POST-PEROVSKITE PHASE | Earth | Crust | Analysis | Seismic tomography | Geophysics | Tectonics (Geology) | Mantle
Journal Article
Journal Article
Geophysical Research Letters, ISSN 0094-8276, 01/1996, Volume 23, Issue 1, pp. 1 - 4
During the last decade, the presence of velocity anisotropy inside the inner core, with a fast axis parallel to the Earth's rotation axis, has been well... 
PHASES | PKP | MODELS | CONVECTION | ROCKS | GEOSCIENCES, INTERDISCIPLINARY | FREE OSCILLATIONS | DIFFERENTIAL TRAVEL-TIMES | PKIKP | PKP(BC) | PROPAGATION | Earth rotation | Correlation | Liquids | Amplitudes | Anisotropy | Attenuation | Quantitative analysis | Crystal structure
Journal Article
Journal of Geophysical Research: Solid Earth, ISSN 0148-0227, 03/2012, Volume 117, Issue B3, p. n/a
It is crucial to obtain good spatial coverage of seismic data points for better understanding the Earth's core, but the core beneath the polar regions remains... 
P‐wave velocity and attenuation | inner and outer core | south polar region | GEOCHEMISTRY & GEOPHYSICS | PKP DATA | LABORATORY MODEL | VELOCITY STRUCTURE | TRAVEL-TIMES | TANGENT CYLINDER | ATTENUATION | SYNTHETIC SEISMOGRAMS | EARTHS CORE | OUTER-CORE | DIFFERENTIAL ROTATION
Journal Article
Earth and Planetary Science Letters, ISSN 0012-821X, 2001, Volume 193, Issue 3, pp. 523 - 537
We analyse over 12500 records of southwest Pacific earthquakes recorded by the UK network for PKP and PKP phases to seek constraints on the inner core's... 
PKP waves | inner core | traveltimes | rotation | Inner core | Traveltime | Rotation | EARTH | ANISOTROPY | DIFFERENTIAL ROTATION | SUPER-ROTATION | MANTLE | HETEROGENEITY | GEOCHEMISTRY & GEOPHYSICS | traveltime | TRAVEL-TIMES | GEODYNAMO | CONSTRAINTS | SCALE
Journal Article
Earth and Planetary Science Letters, ISSN 0012-821X, 04/2015, Volume 415, pp. 175 - 182
A layer of reduced P-velocity gradient with thickness of about 100–200 km has been identified at the base of the liquid core from seismological methods. It has... 
ISC data | Earth core | outer core stratification | outer core heterogeneity | F-layer | PKP residuals | Outer core stratification | Outer core heterogeneity | SEISMIC VELOCITY | EARTHS INNER-CORE | MODEL | GEOCHEMISTRY & GEOPHYSICS | ATTENUATION | GROWTH | CONSTRAINTS | BOUNDARY | LIQUID-CORE | Confidence intervals | Heterogeneity | Liquids | South Pole | Light elements | Sampling | Seismic phenomena | Freezing
Journal Article
Geophysical Journal International, ISSN 0956-540X, 12/2013, Volume 195, Issue 3, pp. 2005 - 2015
The attenuation structure of the Earth's inner core, in combination with the velocity structure, provides much insight into its rheological and mineralogical... 
Outer core and inner core | Seismic attenuation | Body waves | Seismic anisotropy | Core | PKP DATA | outer core and inner core | ANISOTROPY | PKIKP TRAVEL-TIMES | HETEROGENEITY | TRANSITION | GEOCHEMISTRY & GEOPHYSICS | TOP | CONSTRAINTS | BOUNDARY | DEPTH-DEPENDENT ATTENUATION
Journal Article
Physics of the Earth and Planetary Interiors, ISSN 0031-9201, 10/2013, Volume 223, pp. 8 - 20
Lateral heterogeneities at the top of the inner core are investigated using earthquakes that occurred in Indonesia and southeast Asia and were recorded in the... 
Inner core | Boundary structure | PKP phases | Attenuation | Differential travel times | ROTATION | PKP DATA | WAVE-FORM | EARTHS CORE | ANISOTROPY | MANTLE | GEOCHEMISTRY & GEOPHYSICS | SEISMIC ATTENUATION | TRAVEL-TIMES | DEPTH-DEPENDENT ATTENUATION | DYNAMO | Heterogeneity | Earthquakes | Western hemisphere | Latitude | Boundaries | Seismic phenomena | Boundary layer
Journal Article