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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

Implications of a simple mantle transition zone beneath cratonic North America

D.A. Thompson, G. Helffrich, I.D. Bastow, J.-M. Kendall, J. Wookey, D.W. Eaton, D.B. Snyder

Journal:

Earth and Planetary Science Letters

Year:

2011

Language:

english

File:

PDF, 2.86 MB

english, 2011

4

Geology: The maverick founder of modern seismology

Helffrich, George

Journal:

Year:

2013

Language:

english

File:

PDF, 600 KB

english, 2013

5

Persistent Hornerʼs Syndrome After Spinal Fusion and Epidural Analgesia

Hered, Robert W., Cummings, R. Jay, Helffrich, Richard

Journal:

Year:

1998

File:

PDF, 13.81 MB

1998

6

Anisotropy at the inner core boundary

Helffrich, G., Mainprice, D.

Journal:

Geophysical Research Letters

Year:

2019

Language:

english

File:

PDF, 1.50 MB

english, 2019

7

A Noninvasive, on Wafer Method to Determine the Intrinsic Stress of a Polymer Layer

J. Conklin, J. Helffrich, R. Cohn, K. Walsh, H. Cox

Journal:

Experimental Mechanics

Year:

2006

Language:

english

File:

PDF, 401 KB

english, 2006

8

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

9

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

10

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

Schmidt, D. N., Ramalho, R., Helffrich, G., Cosca, M., Vance, D., Hoffmann, D.

Journal:

Nature Geoscience

Year:

2010

Language:

english

File:

PDF, 796 KB

english, 2010

11

Calculation of Elastic Properties from Thermodynamic Equation of State Principles

Bina, C R, Helffrich, G R

Journal:

Annual Review of Earth and Planetary Sciences

Year:

1992

Language:

english

File:

PDF, 964 KB

english, 1992

12

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

13

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

14

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

15

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

16

Diary of the Rev. John Henry Helffrich, September 6, 1771-January 14, 1772

John Henry Helffrich and William J. Hinke

Journal:

The Pennsylvania Magazine of History and Biography

Year:

1914

Language:

english

File:

PDF, 1.74 MB

english, 1914

17

The Hudson Bay Lithospheric Experiment (HuBLE): insights into Precambrian plate tectonics and the development of mantle keels

Bastow, I. D., Eaton, D. W., Kendall, J.- M., Helffrich, G., Snyder, D. B., Thompson, D. A., Wookey, J., Darbyshire, F. A., Pawlak, A. E.

Journal:

Geological Society London Special Publications

Year:

2015

Language:

english

File:

PDF, 8.34 MB

english, 2015

18

film at 0.18-0.4 K

Helffrich, J., Maley, M. P., Krusius, M., Wheatley, J. C.

Journal:

Physical Review B

Year:

1986

Language:

english

File:

PDF, 446 KB

english, 1986

19

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

20

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

21

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

22

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

23

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

24

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

25

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

26

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

27

Hydrous upwelling across the mantle transition zone beneath the Afar Triple Junction

Thompson, D. A., Hammond, J. O. S., Kendall, J.-M., Stuart, G. W., Helffrich, G. R., Keir, D., Ayele, A., Goitom, B.

Journal:

Geochemistry, Geophysics, Geosystems

Year:

2015

Language:

english

File:

PDF, 5.22 MB

english, 2015

28

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

29

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

30

Helligkeitsschätzungen von X Piscium nach photographischen Aufnahmen

J. Helffrich, A. Massinger

Journal:

Astronomische Nachrichten

Year:

1911

File:

PDF, 107 KB

1911

31

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

Ricardo S. Ramalho, G. Helffrich, M. Cosca, D. Vance, D. Hoffmann, D.N. Schmidt

Journal:

Year:

2010

Language:

english

File:

PDF, 1.30 MB

english, 2010

32

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

33

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

J. D. Collier, G. R. Helffrich

Journal:

Geophysical Journal International

Year:

2001

Language:

english

File:

PDF, 1.20 MB

english, 2001

34

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

35

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

36

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

37

SPICeD: imaging the deep Earth

Michael Kendall, George Helffrich

Journal:

Astronomy & Geophysics

Year:

2001

Language:

english

File:

PDF, 204 KB

english, 2001

38

Hydrogen dissociation below 1 K

J. Helffrich, M. Maley, M. Krusius, J. C. Wheatley

Journal:

Journal of Low Temperature Physics

Year:

1987

Language:

english

File:

PDF, 1.36 MB

english, 1987

39

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

40

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

41

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

42

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

43

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

44

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

45

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

46

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

47

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

48

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

49

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

50

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