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1

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

Spieker, Kathrin, Rondenay, Stéphane, Ramalho, Ricardo, Thomas, Christine, Helffrich, George

Journal:

Geophysical Journal International

Year:

2018

Language:

english

File:

PDF, 96 KB

english, 2018

2

GEBCO DIGITAL ATLAS

George Helffrich

Journal:

Year:

1996

Language:

english

File:

PDF, 439 KB

english, 1996

3

Geology: The maverick founder of modern seismology

Helffrich, George

Journal:

Year:

2013

Language:

english

File:

PDF, 600 KB

english, 2013

4

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

Andrea Restivo, George Helffrich

Journal:

Geophysical Journal International

Year:

2006

Language:

english

File:

PDF, 1.42 MB

english, 2006

5

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

Wookey, James, Helffrich, George

Journal:

Year:

2008

Language:

english

File:

PDF, 1.78 MB

english, 2008

6

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

Satoshi Kaneshima, George Helffrich

Journal:

Physics of the Earth and Planetary Interiors

Year:

2010

Language:

english

File:

PDF, 2.70 MB

english, 2010

7

A local, crossing-path study of attenuation and anisotropy of the inner core

Helffrich, George

Journal:

Geophysical Research Letters

Year:

2002

Language:

english

File:

PDF, 232 KB

english, 2002

8

Causes and consequences of outer core stratification

Helffrich, George, Kaneshima, Satoshi

Journal:

Physics of the Earth and Planetary Interiors

Year:

2013

Language:

english

File:

PDF, 466 KB

english, 2013

9

Outer core compositional layering and constraints on core liquid transport properties

Helffrich, George

Journal:

Earth and Planetary Science Letters

Year:

2014

Language:

english

File:

PDF, 431 KB

english, 2014

10

A late Archaean radiating dyke swarm as possible clue to the origin of the Bushveld Complex

Olsson, Johan R., Söderlund, Ulf, Hamilton, Michael A., Klausen, Martin B., Helffrich, George R.

Journal:

Nature Geoscience

Year:

2011

Language:

english

File:

PDF, 524 KB

english, 2011

11

The hard sphere view of the outer core

Helffrich, George

Journal:

Earth Planets and Space

Year:

2015

Language:

english

File:

PDF, 1.47 MB

english, 2015

12

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

Hirose, Kei, Morard, Guillaume, Sinmyo, Ryosuke, Umemoto, Koichio, Hernlund, John, Helffrich, George, Labrosse, Stéphane

Journal:

Year:

2017

Language:

english

File:

PDF, 4.59 MB

english, 2017

13

The Seismic Analysis Code (A Primer and User's Guide) || Three-dimensional data in SAC

Helffrich, George, Wookey, James, Bastow, Ian

Year:

2013

Language:

english

File:

PDF, 433 KB

english, 2013

14

The Seismic Analysis Code (A Primer and User's Guide) || Keyword in context for SAC command descriptions

Helffrich, George, Wookey, James, Bastow, Ian

Year:

2013

Language:

english

File:

PDF, 154 KB

english, 2013

15

The Seismic Analysis Code (A Primer and User's Guide) || Implementation of common processing methodologies using SAC

Helffrich, George, Wookey, James, Bastow, Ian

Year:

2013

Language:

english

File:

PDF, 529 KB

english, 2013

16

The Seismic Analysis Code (A Primer and User's Guide) || Alphabetical list of SAC commands

Helffrich, George, Wookey, James, Bastow, Ian

Year:

2013

Language:

english

File:

PDF, 66 KB

english, 2013

17

The Seismic Analysis Code (A Primer and User's Guide) || References

Helffrich, George, Wookey, James, Bastow, Ian

Year:

2013

Language:

english

File:

PDF, 64 KB

english, 2013

18

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

Spieker, Kathrin, Rondenay, Stéphane, Ramalho, Ricardo, Thomas, Christine, Helffrich, George

Journal:

Geophysical Journal International

Year:

2018

Language:

english

File:

PDF, 942 KB

english, 2018

19

Feasibility of a magma ocean dynamo on Mars

Helffrich, George

Journal:

Progress in Earth and Planetary Science

Year:

2017

Language:

english

File:

PDF, 584 KB

english, 2017

20

Teleseismic shear wave splitting measurements in noisyenvironments

Andrea Restivo, George Helffrich

Journal:

Geophysical Journal International

Year:

1999

Language:

english

File:

PDF, 1.31 MB

english, 1999

21

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

George Helffrich, Douglas A. Wiens, Emilio Vera, Sergio Barrientos, Patrick Shore, Stacey Robertson, Rodrigo Adaros

Journal:

Geophysical Journal International

Year:

2002

Language:

english

File:

PDF, 228 KB

english, 2002

22

Thermal variations in the mantle inferred from 660 km discontinuity topography and tomographic wave speed variations

George Helffrich

Journal:

Geophysical Journal International

Year:

2002

Language:

english

File:

PDF, 246 KB

english, 2002

23

Transition zone structure in a tectonically inactive area: 410 and 660 km discontinuity properties under the northern North Sea

George Helffrich, Eugenio Asencio, Jim Knapp, Tom Owens

Journal:

Geophysical Journal International

Year:

2003

Language:

english

File:

PDF, 384 KB

english, 2003

24

SPICeD: imaging the deep Earth

Michael Kendall, George Helffrich

Journal:

Astronomy & Geophysics

Year:

2001

Language:

english

File:

PDF, 204 KB

english, 2001

25

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

George Helffrich, Seth Stein

Journal:

Geophysical Journal International

Year:

1993

Language:

english

File:

PDF, 2.25 MB

english, 1993

26

Shear-wave splitting variation over short spatial scales on continents

George Helffrich, Paul Silver, Holly Given

Journal:

Geophysical Journal International

Year:

1994

Language:

english

File:

PDF, 2.13 MB

english, 1994

27

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

Journal:

Geophysical Journal International

Year:

1996

Language:

english

File:

PDF, 518 KB

english, 1996

28

Slab low-velocity layer in the eastern Aleutian subduction zone

George Helffrich, Geoffrey A. Abers

Journal:

Geophysical Journal International

Year:

1997

Language:

english

File:

PDF, 730 KB

english, 1997

29

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

George R. Helffrich

Journal:

Geophysical Journal International

Year:

1997

Language:

english

File:

PDF, 943 KB

english, 1997

30

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

Luisa Braña, George Helffrich

Journal:

Geophysical Journal International

Year:

2004

Language:

english

File:

PDF, 743 KB

english, 2004

31

Hydroacoustic detection of volcanic ocean-island earthquakes

George Helffrich, Sandra I. N. Heleno, Bruno Faria, João F. B. D. Fonseca

Journal:

Geophysical Journal International

Year:

2006

Language:

english

File:

PDF, 536 KB

english, 2006

32

Probing two low-velocity regions with PKP b-caustic amplitudes and scattering

Christine Thomas, J-Michael Kendall, George Helffrich

Journal:

Geophysical Journal International

Year:

2009

Language:

english

File:

PDF, 928 KB

english, 2009

33

Grid search inversion of teleseismic receiver functions

Alexandra Lodge, George Helffrich

Journal:

Geophysical Journal International

Year:

2009

Language:

english

File:

PDF, 265 KB

english, 2009

34

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

Ingo Grevemeyer, George Helffrich, Bruno Faria, Guillermo Booth-Rea, Michael Schnabel, Wilhelm Weinrebe

Journal:

Geophysical Journal International

Year:

2010

Language:

english

File:

PDF, 1.25 MB

english, 2010

35

A stacking approach to estimate VP/VS from receiver functions

George Helffrich, David Thompson

Journal:

Geophysical Journal International

Year:

2010

Language:

english

File:

PDF, 428 KB

english, 2010

36

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

Agnieszka Pawlak, David W. Eaton, Ian D. Bastow, J-Michael Kendall, George Helffrich, James Wookey, David Snyder

Journal:

Geophysical Journal International

Year:

2011

Language:

english

File:

PDF, 2.72 MB

english, 2011

37

Small-scale seismic heterogeneity and mantle structure

George Helffrich

Journal:

Astronomy & Geophysics

Year:

2006

Language:

english

File:

PDF, 683 KB

english, 2006

38

Paul Silver 1949–2009

George Helffrich

Journal:

Astronomy & Geophysics

Year:

2009

Language:

english

File:

PDF, 119 KB

english, 2009

39

10.1038/25854

Helffrich, George

Journal:

Year:

1998

Language:

english

File:

PDF, 215 KB

english, 1998

40

Internal structure of the Earth

Wood, Bernard, Helffrich, George

Journal:

Year:

1990

File:

PDF, 155 KB

1990

41

10.1038/35087500

Helffrich, George R., Wood, Bernard J.

Journal:

Year:

2001

Language:

english

File:

PDF, 229 KB

english, 2001

42

Relationship of deep seismicity to the thermal structure of subducted lithosphere

Helffrich, George, Brodholt, John

Journal:

Year:

1991

File:

PDF, 489 KB

1991

43

Earth science: Trouble under Tonga?

Helffrich, George

Journal:

Year:

2005

Language:

english

File:

PDF, 209 KB

english, 2005

44

Outer-core compositional stratification from observed core wave speed profiles

Helffrich, George, Kaneshima, Satoshi

Journal:

Year:

2010

Language:

english

File:

PDF, 621 KB

english, 2010

45

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

John P. Brodholt, George Helffrich, Jeannot Trampert

Journal:

Earth and Planetary Science Letters

Year:

2007

Language:

english

File:

PDF, 681 KB

english, 2007

46

Lower mantle scattering profiles and fabric below Pacific subduction zones

Satoshi Kaneshima, George Helffrich

Journal:

Earth and Planetary Science Letters

Year:

2009

Language:

english

File:

PDF, 379 KB

english, 2009

47

Transition zone structure under a stationary hot spot: Cape Verde

George Helffrich, Bruno Faria, João F.B.D. Fonseca, Alexandra Lodge, Satoshi Kaneshima

Journal:

Earth and Planetary Science Letters

Year:

2010

Language:

english

File:

PDF, 1.01 MB

english, 2010

48

Heterogeneity in the mantle—its creation, evolution and destruction

George Helffrich

Journal:

Year:

2006

Language:

english

File:

PDF, 389 KB

english, 2006

49

Nature of the Moho beneath the Scottish Highlands from a receiver function perspective

Jeanette Di Leo, Ian D. Bastow, George Helffrich

Journal:

Year:

2009

Language:

english

File:

PDF, 717 KB

english, 2009

50

Estimate of inner core rotation rate from United Kingdom regional seismic network data and consequences for inner core dynamical behaviour

Jonathan D. Collier, George Helffrich

Journal:

Earth and Planetary Science Letters

Year:

2001

Language:

english

File:

PDF, 467 KB

english, 2001

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