List of works - George R. Helffrich

Depleted swell root beneath the Cape Verde Islands

scholarly article by Alexandra Lodge & George R Helffrich published 2006 in Geology

The Earth's mantle

scientific article (publication date: 2 August 2001)

Topography of the transition zone seismic discontinuities

article published in 2000

Dipping low-velocity layer in the mid-lower mantle: evidence for geochemical heterogeneity

scientific article published in March 1999

Outer-core compositional stratification from observed core wave speed profiles

scientific article published in Nature

Extended-Time Multitaper Frequency Domain Cross-Correlation Receiver-Function Estimation

scientific article

Seismic discontinuities and subduction zones

Crystallization of silicon dioxide and compositional evolution of the Earth's core

scientific article

Inner-core shear-wave anisotropy and texture from an observation of PKJKP waves.

scientific article published in August 2008

Tracers of uplift and subsidence in the Cape Verde archipelago

scholarly article by R. Ramalho et al published 19 April 2010 in Journal of the Geological Society

Hazard potential of volcanic flank collapses raised by new megatsunami evidence

scientific article

Chemical versus thermal heterogeneity in the lower mantle: The most likely role of anelasticity

scholarly article

The thermal influence of the subducting slab beneath South America from 410 and 660 km discontinuity observations

Seismological Constraints on Core Composition from Fe-O-S Liquid Immiscibility

scientific article

Episodic swell growth inferred from variable uplift of the Cape Verde hotspot islands

scientific article published on 24 October 2010

Study of the structure of the slab-mantle interface using reflected and converted seismic waves

article published in 1993

Precambrian crustal evolution: Seismic constraints from the Canadian Shield

article

Core-mantle boundary structure investigated using SKS and SKKS polarization anomalies

Mapping fine-scale heterogeneities within the continental mantle lithosphere beneath Scotland: Combining active- and passive-source seismology

article

Teleseismic shear wave splitting measurements in noisyenvironments

Chemical and seismological constraints on mantle heterogeneity

scientific article published on November 2002

Causes and consequences of outer core stratification

scholarly article by George R Helffrich & Satoshi Kaneshima published October 2013 in Physics of the Earth and Planetary Interiors

Emergence and evolution of Santa Maria Island (Azores)—The conundrum of uplifted islands revisited

scholarly article

Hydroacoustic detection of volcanic ocean-island earthquakes

scholarly article by George R Helffrich et al published December 2006 in Geophysical Journal International

Shear-wave splitting variation over short spatial scales on continents

Outer core compositional layering and constraints on core liquid transport properties

article

Implications of a simple mantle transition zone beneath cratonic North America

scholarly article by D.A. Thompson et al published December 2011 in Earth and Planetary Science Letters

Heterogeneity in the mantle—its creation, evolution and destruction

scientific article

The stability of sodalite in the system NaAlSiO4-NaCl

scholarly article

Small scale heterogeneity in the mid-lower mantle beneath the circum-Pacific area

scholarly article by Satoshi Kaneshima & George R Helffrich published November 2010 in Physics of the Earth and Planetary Interiors

A scattering region near the core-mantle boundary under the North Atlantic

scholarly article by Luisa Braña & George R Helffrich published August 2004 in Geophysical Journal International

Precambrian plate tectonics: Seismic evidence from northern Hudson Bay, Canada

article

How light element addition can lower core liquid wave speeds

article

Lower mantle scattering profiles and fabric below Pacific subduction zones

scientific article

Vp structure of the outermost core derived from analysing large-scale array data of SmKS waves

Constraints on the structure of the crust and lithosphere beneath the Azores Islands from teleseismic receiver functions

The Seismic Analysis Code

article published in 2009

Subducted Lithospheric Slab Velocity Structure: Observations and Mineralogical Inferences

scientific article

Spatial and temporal constraints on sources of seismic anisotropy: Evidence from the Scottish highlands

article

Shear wave splitting around the northern Atlantic: frozen Pangaean lithospheric anisotropy?

scientific article published in September 1997

Basal reflector under the Philippine Sea Plate

Seismic activity at Cadamosto seamount near Fogo Island, Cape Verdes-formation of a new ocean island?

article published in 2010

Mars core structure—concise review and anticipated insights from InSight

article by George R Helffrich published 6 September 2017 in Progress in Earth and Planetary Science

Grid search inversion of teleseismic receiver functions

Erratum to Extended-Time Multitaper Frequency Domain Cross-Correlation Receiver-Function Estimation

scientific article

CAN‐HK: An a Priori Crustal Model for the Canadian Shield

article

Vertical movements of ocean island volcanoes: Insights from a stationary plate environment

scientific article published in September 2010

Crustal structure beneath Hudson Bay from ambient-noise tomography: implications for basin formation

scholarly article

The elusive coldfinger

scientific article published in Nature

List of works by George R. Helffrich

Depleted swell root beneath the Cape Verde Islands

The Earth's mantle

Topography of the transition zone seismic discontinuities

Dipping low-velocity layer in the mid-lower mantle: evidence for geochemical heterogeneity

Outer-core compositional stratification from observed core wave speed profiles

Extended-Time Multitaper Frequency Domain Cross-Correlation Receiver-Function Estimation

Seismic discontinuities and subduction zones

Crystallization of silicon dioxide and compositional evolution of the Earth's core

Inner-core shear-wave anisotropy and texture from an observation of PKJKP waves.

Tracers of uplift and subsidence in the Cape Verde archipelago

Hazard potential of volcanic flank collapses raised by new megatsunami evidence

Chemical versus thermal heterogeneity in the lower mantle: The most likely role of anelasticity

The thermal influence of the subducting slab beneath South America from 410 and 660 km discontinuity observations

Seismological Constraints on Core Composition from Fe-O-S Liquid Immiscibility

Episodic swell growth inferred from variable uplift of the Cape Verde hotspot islands

Study of the structure of the slab-mantle interface using reflected and converted seismic waves

Precambrian crustal evolution: Seismic constraints from the Canadian Shield

Core-mantle boundary structure investigated using SKS and SKKS polarization anomalies

Mapping fine-scale heterogeneities within the continental mantle lithosphere beneath Scotland: Combining active- and passive-source seismology

Teleseismic shear wave splitting measurements in noisyenvironments

Chemical and seismological constraints on mantle heterogeneity

Causes and consequences of outer core stratification

Emergence and evolution of Santa Maria Island (Azores)—The conundrum of uplifted islands revisited

Hydroacoustic detection of volcanic ocean-island earthquakes

Shear-wave splitting variation over short spatial scales on continents

Outer core compositional layering and constraints on core liquid transport properties

Implications of a simple mantle transition zone beneath cratonic North America

Heterogeneity in the mantle—its creation, evolution and destruction

The stability of sodalite in the system NaAlSiO4-NaCl

Small scale heterogeneity in the mid-lower mantle beneath the circum-Pacific area

A scattering region near the core-mantle boundary under the North Atlantic

Precambrian plate tectonics: Seismic evidence from northern Hudson Bay, Canada

How light element addition can lower core liquid wave speeds

Lower mantle scattering profiles and fabric below Pacific subduction zones

Vp structure of the outermost core derived from analysing large-scale array data of SmKS waves

Constraints on the structure of the crust and lithosphere beneath the Azores Islands from teleseismic receiver functions

The Seismic Analysis Code

Subducted Lithospheric Slab Velocity Structure: Observations and Mineralogical Inferences

Spatial and temporal constraints on sources of seismic anisotropy: Evidence from the Scottish highlands

Shear wave splitting around the northern Atlantic: frozen Pangaean lithospheric anisotropy?

Basal reflector under the Philippine Sea Plate

Seismic activity at Cadamosto seamount near Fogo Island, Cape Verdes-formation of a new ocean island?

Mars core structure—concise review and anticipated insights from InSight

Grid search inversion of teleseismic receiver functions

Erratum to Extended-Time Multitaper Frequency Domain Cross-Correlation Receiver-Function Estimation

CAN‐HK: An a Priori Crustal Model for the Canadian Shield

Vertical movements of ocean island volcanoes: Insights from a stationary plate environment

Crustal structure beneath Hudson Bay from ambient-noise tomography: implications for basin formation

The elusive coldfinger

A teleseismic shear-wave splitting study to investigate mantle flow around South America and implications for plate-driving forces