Helmberger, Donald. V.: search on Z-Library

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1

Generalized Ray Theory for a Layered Sphere

Freeman Gilbert, Donald V. Helmberger

Journal:

Geophysical Journal International

Year:

1972

Language:

english

File:

PDF, 957 KB

english, 1972

2

A lower mantle S-wave triplication and the shear velocity structure of D″

Thorne Lay, Donald V. Helmberger

Journal:

Geophysical Journal International

Year:

1983

Language:

english

File:

PDF, 1.74 MB

english, 1983

3

A two-dimensional P-SV hybrid method and its application to modeling localized structures near the core-mantle boundary

Wen, Lianxing, Helmberger, Donald V.

Journal:

Journal of Geophysical Research

Year:

1998

Language:

english

File:

PDF, 1.46 MB

english, 1998

4

Lateral variations near the core-mantle boundary

Garnero, Edward, Helmberger, Donald, Engen, Gladys

Journal:

Geophysical Research Letters

Year:

1988

Language:

english

File:

PDF, 343 KB

english, 1988

5

A Procedure for Modelling Shallow Dislocation Sources

Charles A. Langston, Donald V. Helmberger

Journal:

Geophysical Journal International

Year:

1975

Language:

english

File:

PDF, 668 KB

english, 1975

6

Evidence for a sharp lateral variation of velocity at the core–mantle boundary from multipathed PKPab

Sheng-Nian Luo, Sidao Ni, Donald V. Helmberger

Journal:

Earth and Planetary Science Letters

Year:

2001

Language:

english

File:

PDF, 579 KB

english, 2001

7

Localized boundary layer below the mid-Pacific velocity anomaly identified from a PcP precursor

Mori, Jim, Helmberger, Donald V.

Journal:

Journal of Geophysical Research

Year:

1995

Language:

english

File:

PDF, 613 KB

english, 1995

8

The upper mantle P velocity structure of the western United States

Burdick, L. J., Helmberger, Donald V.

Journal:

Journal of Geophysical Research

Year:

1978

Language:

english

File:

PDF, 1.52 MB

english, 1978

9

Synthetic seismograms from model ocean bottoms

Spudich, P. K. P., Helmberger, Donald V.

Journal:

Journal of Geophysical Research

Year:

1979

Language:

english

File:

PDF, 1.31 MB

english, 1979

10

Seismic detection of a thin laterally varying boundary layer at the base of the mantle beneath the central-Pacific

Garnero, Edward J., Helmberger, Donald V.

Journal:

Geophysical Research Letters

Year:

1996

Language:

english

File:

PDF, 596 KB

english, 1996

11

A shear velocity discontinuity in the lower mantle

Lay, Thorne, Helmberger, Donald V.

Journal:

Geophysical Research Letters

Year:

1983

Language:

english

File:

PDF, 362 KB

english, 1983

12

Imaging subducted slab structure beneath the Sea of Okhotsk with teleseismic waveforms

Zhan, Zhongwen, Helmberger, Donald V., Li, Dunzhu

Journal:

Physics of the Earth and Planetary Interiors

Year:

2014

Language:

english

File:

PDF, 12.40 MB

english, 2014

13

Subducting Slab Ultra-Slow Velocity Layer Coincident with Silent Earthquakes in Southern Mexico

Song, T.-R. A., Helmberger, Donald. V., Brudzinski, M. R., Clayton, R. W., Davis, P., Perez-Campos, X., Singh, S. K.

Journal:

Year:

2009

Language:

english

File:

PDF, 726 KB

english, 2009

14

The influence of site conditions on the spatial incoherence of ground motions

Paul G. Somerville, James P. McLaren, Mrinal K. Sen, Donald V. Helmberger

Journal:

Structural Safety

Year:

1991

Language:

english

File:

PDF, 676 KB

english, 1991

15

Regional moments, energy levels, and a new discriminant

Lian-She Zhao, Donald V. Helmberger

Journal:

Pure and Applied Geophysics

Year:

1996

Language:

english

File:

PDF, 1.23 MB

english, 1996

16

Numerical-analytical interfacing in two dimensions with applications to modeling NTS seismograms

Richard J. Stead, Donald V. Helmberger

Journal:

Pure and Applied Geophysics

Year:

1988

Language:

english

File:

PDF, 1.58 MB

english, 1988

17

Calibration of the Tibetan Plateau Using Regional Seismic Waveforms

Lupei Zhu, Ying Tan, Donald V. Helmberger, Chandan K. Saikia

Journal:

Pure and Applied Geophysics

Year:

2006

Language:

english

File:

PDF, 1.05 MB

english, 2006

18

On the Structure of the Low Velocity Zone

Donald V. Helmberger

Journal:

Geophysical Journal International

Year:

1973

Language:

english

File:

PDF, 653 KB

english, 1973

19

Synthetic Seismogram Computation by Expansion in Generalized Rays

Ralph A. Wigginst, Donald V. Helmberger

Journal:

Geophysical Journal International

Year:

1974

Language:

english

File:

PDF, 849 KB

english, 1974

20

Fine structure of an Aleutian crustal section

Donald V. Helmberger

Journal:

Geophysical Journal International

Year:

1977

Language:

english

File:

PDF, 490 KB

english, 1977

21

A modified first-motion approximation for the synthesis of body-wave seismograms

George R. Mellman, Donald V. Helmberger

Journal:

Geophysical Journal International

Year:

1978

Language:

english

File:

PDF, 502 KB

english, 1978

22

Body wave amplitude patterns and upper mantle attenuation variations across North America

Thorne Lay, Donald V. Helmberger

Journal:

Geophysical Journal International

Year:

1981

Language:

english

File:

PDF, 1.99 MB

english, 1981

23

Upper mantle shear structure of North America

Stephen P. Grand, Donald V. Helmberger

Journal:

Geophysical Journal International

Year:

1984

Language:

english

File:

PDF, 1.68 MB

english, 1984

24

Estimating the yields of the Amchitka tests by waveform intercorrelation

Thorne Lay, L. J. Burdick, Donald V. Helmberger

Journal:

Geophysical Journal International

Year:

1984

Language:

english

File:

PDF, 1.60 MB

english, 1984

25

Shear-velocity structure of the crust and upper mantle beneath the Tibetan Plateau and southeastern China

Lian-She Zhao, Donald V. Helmberger, David G. Harkrider

Journal:

Geophysical Journal International

Year:

1991

Language:

english

File:

PDF, 1.35 MB

english, 1991

26

Broadband modelling along a regional shield path, Harvard recording of the Saguenay earthquake

Lian-She Zhao, Donald V. Helmberger

Journal:

Geophysical Journal International

Year:

1991

Language:

english

File:

PDF, 1.00 MB

english, 1991

27

Broad-Band Modelling of Regional Seismograms: the Basin and Range Crustal Structure

Xi J. Song, Donald V. Helmberger, L. Zhao

Journal:

Geophysical Journal International

Year:

1996

Language:

english

File:

PDF, 1.07 MB

english, 1996

28

Uppermantle shear structure beneath Asia from multi-bounce S waves

Stephen P. Grand, Donald V. Helmberger

Journal:

Physics of the Earth and Planetary Interiors

Year:

1985

Language:

english

File:

PDF, 1.18 MB

english, 1985

29

Source retrieval from broadband regional seismograms: Hindu Kush region

Zhao Lian-She, Donald V. Helmberger

Journal:

Physics of the Earth and Planetary Interiors

Year:

1993

Language:

english

File:

PDF, 1.96 MB

english, 1993

30

On seismic resolution of lateral heterogeneity in the Earth's outermost core

Edward J. Garnero, Donald V. Helmberger

Journal:

Physics of the Earth and Planetary Interiors

Year:

1995

Language:

english

File:

PDF, 1.09 MB

english, 1995

31

A very slow basal layer underlying large-scale low-velocity anomalies in the lower mantle beneath the Pacific: evidence from core phases

Edward J. Garnero, Donald V. Helmberger

Journal:

Physics of the Earth and Planetary Interiors

Year:

1995

Language:

english

File:

PDF, 1.11 MB

english, 1995

32

Interpreting D″ seismic structure using synthetic waveforms computed from dynamic models

Igor Sidorin, Michael Gurnis, Donald V Helmberger, Xiaoming Ding

Journal:

Earth and Planetary Science Letters

Year:

1998

Language:

english

File:

PDF, 534 KB

english, 1998

33

Low-velocity structure beneath Africa from forward modeling

Sidao Ni, Xiaoming Ding, Donald V Helmberger, Michael Gurnis

Journal:

Earth and Planetary Science Letters

Year:

1999

Language:

english

File:

PDF, 843 KB

english, 1999

34

Modelling D″ structure beneath Central America with broadband seismic data

Xiaoming Ding, Donald V. Helmberger

Journal:

Physics of the Earth and Planetary Interiors

Year:

1997

Language:

english

File:

PDF, 1.56 MB

english, 1997

35

Slip distribution and tectonic implication of the 1999 Chi-Chi, Taiwan, Earthquake

Ji, Chen, Helmberger, Donald V., Alex Song, Teh-Ru, Ma, Kuo-Fong, Wald, David J.

Journal:

Geophysical Research Letters

Year:

2001

Language:

english

File:

PDF, 608 KB

english, 2001

36

Intermediate depth earthquakes beneath the India-Tibet Collision Zone

Zhu, Lupei, Helmberger, Donald V.

Journal:

Geophysical Research Letters

Year:

1996

Language:

english

File:

PDF, 528 KB

english, 1996

37

Seismicity and stress-drop in the Eastern Transverse Ranges, southern California

Jones, Laura E., Helmberger, Donald V.

Journal:

Geophysical Research Letters

Year:

1996

Language:

english

File:

PDF, 443 KB

english, 1996

38

Upper mantle compressional velocity structure beneath the West Mediterranean Basin

Pino, N. Alessandro, Helmberger, Donald V.

Journal:

Journal of Geophysical Research

Year:

1997

Language:

english

File:

PDF, 1.31 MB

english, 1997

39

Modeling local earthquakes as shear dislocations in a layered half space

Helmberger, Donald V., Malone, Stephen D.

Journal:

Journal of Geophysical Research

Year:

1975

Language:

english

File:

PDF, 669 KB

english, 1975

40

A note on velocity, density, and attenuation models for marine sediments determined from multibounce phases

Helmberger, Donald V., Engen, Gladys, Scott, Pat

Journal:

Journal of Geophysical Research

Year:

1979

Language:

english

File:

PDF, 449 KB

english, 1979

41

A technique for the inversion of regional data in source parameter studies

Wallace, Terry C., Helmberger, Donald V., Mellman, George R.

Journal:

Journal of Geophysical Research

Year:

1981

Language:

english

File:

PDF, 736 KB

english, 1981

42

The Bermuda earthquake of March 24, 1978: A significant oceanic intraplate event

Stewart, Gordon S., Helmberger, Donald V.

Journal:

Journal of Geophysical Research

Year:

1981

Language:

english

File:

PDF, 946 KB

english, 1981

43

The Oroville Earthquakes: A study of source characteristics and site effects

Cohn, Stephen N., Hong, Tai-Lin, Helmberger, Donald V.

Journal:

Journal of Geophysical Research

Year:

1982

Language:

english

File:

PDF, 1.13 MB

english, 1982

44

The shear-wave velocity gradient at the base of the mantle

Lay, Thorne, Helmberger, Donald V.

Journal:

Journal of Geophysical Research

Year:

1983

Language:

english

File:

PDF, 1.02 MB

english, 1983

45

Upper mantle shear structure beneath the northwest Atlantic Ocean

Grand, Stephen P., Helmberger, Donald V.

Journal:

Journal of Geophysical Research

Year:

1984

Language:

english

File:

PDF, 1.14 MB

english, 1984

46

Upper mantle cross section from Tonga to Newfoundland

Graves, Robert W., Helmberger, Donald V.

Journal:

Journal of Geophysical Research

Year:

1988

Language:

english

File:

PDF, 1023 KB

english, 1988

47

Source complexity of the October 1, 1987, Whittier Narrows earthquake

Bent, Allison L., Helmberger, Donald V.

Journal:

Journal of Geophysical Research

Year:

1989

Language:

english

File:

PDF, 799 KB

english, 1989

48

Upper mantle P velocity structure of the Canadian Shield

LeFevre, L. Victoria, Helmberger, Donald V.

Journal:

Journal of Geophysical Research

Year:

1989

Language:

english

File:

PDF, 1.61 MB

english, 1989

49

A body-wave analysis of the 1966 Gisborne, New Zealand, earthquake

Terry H. Webb, S.G. Wesnousky, Donald V. Helmberger

Journal:

Year:

1985

Language:

english

File:

PDF, 709 KB

english, 1985

50

Evidence for strong shear velocity reductions and velocity gradients in the lower mantle beneath Africa

Ritsema, Jeroen, Ni, Sidao, Helmberger, Donald V., Crotwell, H. Philip

Journal:

Geophysical Research Letters

Year:

1998

Language:

english

File:

PDF, 584 KB

english, 1998