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Earth Science

D-Index
48
Citations
7059
World Ranking
3886
National Ranking
86

Research.com Recognitions

  • 2017 - Fellow of American Geophysical Union (AGU)

Overview

George Helffrich is affiliated with the Tokyo Institute of Technology in Japan and conducts research primarily in Earth and Planetary Sciences as well as Engineering. Their work spans several interconnected subfields including Geophysics, Mechanics of Materials, Mechanical Engineering, Ocean Engineering, and Astronomy and Astrophysics.

Their research covers a range of topics such as Geological and Geochemical Analysis, High-pressure Geophysics and Materials, Reservoir Engineering and Simulation Methods, Laser-induced Spectroscopy and Plasma, Metallurgical Processes and Thermodynamics, Geological Modeling and Analysis, and Earthquake and Tectonic Studies.

Helffrich has contributed to multiple publications with notable recent papers including:

  • Thermodynamical Modeling of Liquid Fe-Si-Mg-O: Molten Magnesium Silicate Release From the Core (2020), published in Geophysical Research Letters
  • Short note about detection of a deep Mars mantle seismic discontinuity (2022), published in Zenodo (CERN European Organization for Nuclear Research)

Their frequent co-authors include Kei Hirose, Amir Khan, Domenico Giardini, Johannes Kemper, and Ryuichi Nomura, indicating active collaborations in related research areas.

Key venues of publication for Helffrich are diverse but include multiple contributions to Zenodo (CERN European Organization for Nuclear Research), as well as publications in Geophysical Research Letters, Journal of Geophysical Research Solid Earth, Geophysical Journal International, and Goldschmidt Abstracts.

Helffrich's recognition in the scientific community is marked by receiving the distinction of Fellow of the American Geophysical Union (AGU) in 2017.

Best Publications

  • Phase transition Clapeyron slopes and transition zone seismic discontinuity topography

    Craig R. Bina;George Helffrich

  • The Earth's mantle

    George R. Helffrich;George R. Helffrich;Bernard J. Wood

  • Topography of the transition zone seismic discontinuities

    George Helffrich

  • Crystallization of silicon dioxide and compositional evolution of the Earth’s core

    Kei Hirose;Guillaume Morard;Ryosuke Sinmyo;Koichio Umemoto

  • Outer-core compositional stratification from observed core wave speed profiles

    George Helffrich;Satoshi Kaneshima

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

    George Helffrich

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

    Satoshi Kaneshima;George Helffrich

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

    Ricardo Dos Santos Ramalho;Ricardo Dos Santos Ramalho;George Helffrich;José Madeira;Michael Cosca

  • Subduction zone thermal structure and mineralogy and their relationship to seismic wave reflections and conversions at the slab/mantle interface

    George R. Helffrich;Seth Stein;Bernard J. Wood

  • Topography of the “410” and “660” km seismic discontinuities in the Izu-Bonin Subduction Zone

    Jonathan D. Collier;George R. Helffrich

  • Precambrian crustal evolution: seismic constraints from the Canadian Shield

    D.A Thompson;ID Bastow;GR Helffrich;J-M Kendall

  • How good are routinely determined focal mechanisms? Empirical statistics based on a comparison of Harvard, USGS and ERI moment tensors

    George R. Helffrich

  • Seismological constraints on core composition from Fe-O-S liquid immiscibility.

    George Helffrich;Satoshi Kaneshima

  • Detection of lower mantle scatterers northeast of the Marianna subduction zone using short-period array data

    Satoshi Kaneshima;George Helffrich

  • Hazard potential of volcanic flank collapses raised by new megatsunami evidence

    Ricardo Dos Santos Ramalho;Ricardo Dos Santos Ramalho;Gisela Winckler;José Madeira;George Helffrich;George Helffrich

  • CALCULATION OF ELASTIC PROPERTIES FROM THERMODYNAMIC EQUATION OF STATE PRINCIPLES

    Craig R. Bina;George R. Helffrich

  • Tracers of Uplift and Subsidence in the Cape Verde Archipelago

    Ricardo S. Ramalho;GR Helffrich;Daniela N Schmidt;D Vance

  • Depleted swell root beneath the Cape Verde Islands

    Alexandra Lodge;George Helffrich

  • 410 km discontinuity sharpness and the form of the olivine α-β phase diagram: resolution of apparent seismic contradictions

    George R. Helffrich;Bernard J. Wood

  • Seismic discontinuities and subduction zones

    Jonathan D. Collier;George R. Helffrich;Bernard J. Wood

  • The Seismic Analysis Code: A Primer and User's Guide

    George Helffrich;James Wookey;Ian Bastow

  • The Seismic Analysis Code by George Helffrich

    Unknown

Frequent Co-Authors

Ian D. Bastow
Ian D. Bastow Imperial College London
James Wookey
James Wookey University of Bristol
Kei Hirose
Kei Hirose University of Tokyo
J-M Kendall
J-M Kendall University of Oxford
Christine Thomas
Christine Thomas University of Münster
David W. Eaton
David W. Eaton University of Calgary
José Madeira
José Madeira University of Lisbon
Graham Stuart
Graham Stuart University of Leeds
James O.S. Hammond
James O.S. Hammond Birkbeck, University of London
Derek Vance
Derek Vance ETH Zurich

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