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No. 5390; 924-927; 10.1126/science.282.5390.924
Zhu, Lupei and Helmberger, Donald V. (1998) Moho
Offset Across the Northern Margin of the Tibetan Plateau ; Science;
Vol. 281; No. 5380; 1170-1172; 10.1126/science.281.5380.1170
Wen, Lianxing and Helmberger, Donald V. (1998) A
two-dimensional P-SV hybrid method and its application to modeling
localized structures near the core-mantle boundary ; Journal of
Geophysical Research B; Vol. 103; No. B8; 17,901-17,918; 10.1029/98JB01276
Garnero, Edward J. and Helmberger, Donald V. (1998) Further
structural constraints and uncertainties of a thin laterally varying
ultralow-velocity layer at the base of the mantle ; Journal of
Geophysical Research B; Vol. 103; No. B6; 12,495-12,509; 10.1029/98JB00700
Melbourne, Tim and Helmberger, Don (1998) Fine
structure of the 410-km discontinuity ; Journal of Geophysical
Research B; Vol. 103; No. B5; 10,091-10,102; 10.1029/98JB00164
Wen, Lianxing and Helmberger, Donald V. (1998) Ultra-Low
Velocity Zones Near the Core-Mantle Boundary from Broadband PKP
Precursors ; Science; Vol. 279; No. 5357; 1701-1703; 10.1126/science.279.5357.1701
Sato, Toshiaki; Helmberger, Donald V.; et el. (1998) Estimates
of regional and local strong motions during the great 1923 Kanto, Japan,
earthquake (Ms 8.2). Part 1: Source estimation of a calibration event
and modeling of wave propagation paths ; Bulletin of the
Seismological Society of America; Vol. 88; No. 1; 183-205
Song, Xi J. and Helmberger, Donald V. (1998) Pseudo
Green’s Functions and Waveform Tomography ; Bulletin of the
Seismological Society of America; Vol. 88; No. 1; 304-312
Helmberger, Don (1998) Helmberger
Receives Lehmann Medal ; Eos; Vol. 79; No. 4; 47; 10.1029/98EO00032
Zhu, Lupei; Helmberger, Donald V.; et el. (1997) Regional
waveform calibration in the Pamir-Hindu Kush region ; Journal of
Geophysical Research B; Vol. 102; No. B10; 22,799-22,813; 10.1029/97JB01855
Song, Xiaodong and Helmberger, Don V. (1997) PKP
differential travel times: Implications for 3-D lower mantle
structure ; Geophysical Research Letters; Vol. 24; No. 15; 1863-1866;
10.1029/97GL01761
Saikia, Chandan K. and Helmberger, D. V. (1997) Approximation
of Rupture Directivity in Regional Phases Using Upgoing and Downgoing
Wave Fields ; Bulletin of the Seismological Society of America; Vol.
87; No. 4; 987-998
Song, Xi J. and Helmberger, Donald V. (1997) Northridge
aftershocks, a source study with TERRAscope data ; Bulletin of the
Seismological Society of America; Vol. 87; No. 4; 1024-1034
Wen, Lianxing and Helmberger, Donald V. (1997) Propagational
Corrections for Basin Structure: Landers Earthquake ; Bulletin of the
Seismological Society of America; Vol. 87; No. 3; 782-787
Woods, Bradley B. and Helmberger, Donald V. (1997) Regional
Seismic Discriminants Using Wave-Train Energy Ratios ; Bulletin of
the Seismological Society of America; Vol. 87; No. 3; 589-605
Ding, Xiaoming and Helmberger, Donald V. (1997) Modelling
D″ structure beneath Central America with broadband seismic data ;
Physics of the Earth and Planetary Interiors; Vol. 101; No. 3-4;
245-270; 10.1016/S0031-9201(97)00001-0
Pino, N. Alessandro and Helmberger, Donald V. (1997) Upper
mantle compressional velocity structure beneath the West Mediterranean
Basin ; Journal of Geophysical Research B; Vol. 102; No. B2;
2953-2967; 10.1029/96JB03461
Mori, Jim and Helmberger, Donald (1996) Large-amplitude
Moho reflections (SmS) from Landers aftershocks, southern
California ; Bulletin of the Seismological Society of America; Vol.
86; No. 6; 1845-1852
Zhu, Lupei and Helmberger, Donald V. (1996) Advancement
in Source Estimation Techniques Using Broadband Regional
Seismograms ; Bulletin of the Seismological Society of America; Vol.
86; No. 5; 1634-1641
Helmberger, D. V.; Garnero, E. J.; et el. (1996) Modeling
two-dimensional structure at the core-mantle boundary ; Journal of
Geophysical Research B; Vol. 101; No. B6; 13,963-13,972; 10.1029/96JB00534
Song, Xi J. and Helmberger, Donald V. (1996) Source
Estimation of Finite Faults from Broadband Regional Networks ;
Bulletin of the Seismological Society of America; Vol. 86; No. 3;
797-804
Garnero, Edward J. and Helmberger, Donald V. (1996) Seismic
detection of a thin laterally varying boundary layer at the base of the
mantle beneath the central-Pacific ; Geophysical Research Letters;
Vol. 23; No. 9; 977-980; 10.1029/95GL03603
Song, Xi J.; Helmberger, Donald V.; et el. (1996) Broad-Band
Modelling of Regional Seismograms: the Basin and Range Crustal
Structure ; Geophysical Journal International; Vol. 125; No. 1;
15-29; 10.1111/j.1365-246X.1996.tb06531.x
Zhu, Lupei and Helmberger, Donald V. (1996) Intermediate
depth earthquakes beneath the India-Tibet collision zone ;
Geophysical Research Letters; Vol. 23; No. 5; 435-438; 10.1029/96GL00385
Zhao, Lian-She and Helmberger, Donald V. (1996) Regional
moments, energy levels, and a new discriminant ; Pure and Applied
Geophysics; Vol. 146; No. 2; 281-304; 10.1007/BF00876494
Jones, Laura E. and Helmberger, Donald V. (1996) Seismicity
and stress-drop in the eastern Transverse ranges, Southern
California ; Geophysical Research Letters; Vol. 23; No. 3; 233-236;
10.1029/96GL00012
Helmberger, Don V.; Zhao, Lian-She; et el. (1996) Construction
of Synthetics for 2D structures; core phases ; ISBN 978-8877940803;
183-221
Helmberger, Don V. and Woods, Brad (1996) Regional
Source Parameters, Seismic Energy, and Discrimination ; ISBN
9780792338116; 365-383
Wald, David J.; Heaton, Thomas H.; et el. (1996) Strong-Motion
and Broadband Teleseismic Analysis of the Earthquake for Rupture Process
and Hazards Assessment
Song, Xi J.; Jones, Laura E.; et el. (1995) Source
characteristics of the 17 January 1994 Northridge, California,
earthquake from regional broadband modeling ; Bulletin of the
Seismological Society of America; Vol. 85; No. 6; 1591-1603
Mori, Jim and Helmberger, Donald V. (1995) Localized
boundary layer below the mid-Pacific velocity anomaly identified from a
PeP precursor ; Journal of Geophysical Research B; Vol. 100; No. B10;
20,359-20,365; 10.1029/95JB02243
Garnero, Edward J. and Helmberger, Donald V. (1995) A
very slow basal layer underlying large-scale low-velocity anomalies in
the lower mantle beneath the Pacific: evidence from core phases ;
Physics of the Earth and Planetary Interiors; Vol. 91; No. 1-3; 161-176;
10.1016/0031-9201(95)03039-Y
Garnero, Edward J. and Helmberger, Donald V. (1995) Seismic
Resolution of the Earth’s Outermost Core in Relation to Lower Mantle
Heterogeneity
Scrivner, Craig W. and Helmberger, Donald V. (1995) Preliminary
work on an early warning and rapid response program for moderate
earthquakes ; Bulletin of the Seismological Society of America; Vol.
85; No. 4; 1257-1265
Song, Xiaodong and Helmberger, Don V. (1995) A
P wave velocity model of Earth’s core ; Journal of Geophysical
Research B; Vol. 100; No. B7; 9817-9830; 10.1029/94JB03135
Song, Xiaodong and Helmberger, Don V. (1995) Depth
dependence of anisotropy of Earth’s inner core ; Journal of
Geophysical Research B; Vol. 100; No. B6; 9805-9816; 10.1029/95JB00244
Garnero, Edward J. and Helmberger, Donald V. (1995) On
seismic resolution of lateral heterogeneity in the Earth’s outermost
core ; Physics of the Earth and Planetary Interiors; Vol. 88; No. 2;
117-130; 10.1016/0031-9201(94)02976-I
Scrivner, Craig W. and Helmberger, Donald V. (1994) Seismic
Waveform Modeling in the Los Angeles Basin ; Bulletin of the
Seismological Society of America; Vol. 84; No. 5; 1310-1326
Saikia, Chandan K.; Dreger, Douglas S.; et el. (1994) Modeling
of Energy Amplification Recorded within Greater Los Angeles Using
Irregular Structure ; Bulletin of the Seismological Society of
America; Vol. 84; No. 1; 47-61
Zhao, Lian-She and Helmberger, Donald V. (1994) Source
Estimation from Broadband Regional Seismograms ; Bulletin of the
Seismological Society of America; Vol. 84; No. 1; 91-104
Jones, L. E.; Hough, S. E.; et el. (1993) Rupture
process of the June 28, 1992 Big Bear Earthquake ; Geophysical
Research Letters; Vol. 20; No. 18; 1907-1910; 10.1029/93GL02046
Woods, Bradley B.; Kedar, Sharon; et el. (1993) M_L:M_0
as a regional seismic discriminant ; Bulletin of the Seismological
Society of America; Vol. 83; No. 4; 1167-1183
Wald, David J.; Kanamori, Hiroo; et el. (1993) Source
study of the 1906 San Francisco earthquake ; Bulletin of the
Seismological Society of America; Vol. 83; No. 4; 981-1019
Helmberger, Donald V.; Dreger, Douglas S.; et el. (1993) Impact
of Broadband Seismology on the Understanding of Strong Motions ;
Bulletin of the Seismological Society of America; Vol. 83; No. 3;
830-850
Garnero, E. J.; Helmberger, D. V.; et el. (1993) Preliminary
observations from the use of US-Soviet Joint Seismic Program data to
model upper mantle triplications beneath Asia ; Geophysical Journal
International; Vol. 113; No. 1; 252-259; 10.1111/j.1365-246X.1993.tb02544.x
Helmberger, D. V.; Somerville, P. G.; et el. (1992) The
Location and Source Parameters of the Lompoc, California, Earthquake of
4 November 1927 ; Bulletin of the Seismological Society of America;
Vol. 82; No. 4; 1678-1709
Wald, David J.; Hartzell, Stephen H.; et el. (1992) Reply
to Arthur Frankel’s “Comment on ‘Rupture process of the 1987
Superstition Hills earthquake from the inversion of strong-motion
data’” ; Bulletin of the Seismological Society of America; Vol. 82;
No. 3; 1519-1533
Bent, Allison L. and Helmberger, Donald V. (1991) A
re-examination of historic earthquakes in the San Jacinto fault zone,
California ; Bulletin of the Seismological Society of America; Vol.
81; No. 6; 2289-2309
Burdick, L. J.; Garnero, E. J.; et el. (1991) Time
Domain Regional Discriminants
Wald, David J.; Helmberger, Donald V.; et el. (1991) Rupture
model of the 1989 Loma Prieta earthquake from the inversion of
strong-motion and broadband teleseismic data ; Bulletin of the
Seismological Society of America; Vol. 81; No. 5; 1540-1572
Dreger, Douglas S. and Helmberger, Donald V. (1991) Complex
faulting deduced from broadband modeling of the 28 February 1990 Upland
earthquake (M_L = 5.2) ; Bulletin of the Seismological Society of
America; Vol. 81; No. 4; 1129-1144
Zhao, Lian-She; Helmberger, Donald V.; et el. (1991) Shear-velocity
structure of the crust and upper mantle beneath the Tibetan Plateau and
southeastern China ; Geophysical Journal International; Vol. 105;
No. 3; 713-730; 10.1111/j.1365-246X.1991.tb00807.x
Bent, Allison L. and Helmberger, Donald V. (1991) Seismic
characteristics of earthquakes along the offshore extension of the
western transverse ranges, California ; Bulletin of the Seismological
Society of America; Vol. 81; No. 2; 399-422
Hauksson, Egill; Jones, Lucile; et el. (1991) Southern
California Seismographic Network; report to the U.S. Geological Survey,
August 21, 1990 ; 10.3133/ofr9138
Dreger, Douglas S. and Helmberger, Donald V. (1990) Broadband
modeling of local earthquakes ; Bulletin of the Seismological Society
of America; Vol. 80; No. 5; 1162-1179
Wald, David J.; Helmberger, Donald V.; et el. (1990) Rupture
process of the 1987 Superstition Hills earthquake from the inversion of
strong-motion data ; Bulletin of the Seismological Society of
America; Vol. 80; No. 5; 1079-1098
Somerville, Paul G.; McLaren, James P.; et el. (1990) The
25 November 1988 Saguenay, Quebec, Earthquake: Source Parameters and the
Attenuation of Strong Ground Motion ; Bulletin of the Seismological
Society of America; Vol. 80; No. 5; 1118-1143
Bent, Allison L.; Helmberger, Donald V.; et el. (1989) Waveform
modeling of the November 1987 Superstition Hills earthquake ;
Bulletin of the Seismological Society of America; Vol. 79; No. 2;
500-514
Stead, Richard J. and Helmberger, Donald
Numerical-analytical
interfacing in two dimensions with applications to modeling NTS
seismograms ; Pure and Applied Geophysics; Vol. 128; No. 1-2;
157-193; 10.1007/BF01772596
Vidale, John E. and Helmberger, Donald V. (1988) Elastic
finite-difference modeling of the 1971 San Fernando, California
earthquake ; Bulletin of the Seismological Society of America; Vol.
78; No. 1; 122-141
Helmberger, Donald V. and Vidale, John E. (1988) Modeling
strong motions produced by earthquakes with two-dimensional numerical
codes ; Bulletin of the Seismological Society of America; Vol. 78;
No. 1; 109-121
Somerville, P. G.; McLaren, J. P.; et el. (1987) Comparison
of source scaling relations of eastern and western North American
earthquakes ; Bulletin of the Seismological Society of America; Vol.
77; No. 2; 322-346
Burger, R. W.; Somerville, P. G.; et el. (1987) The
effect of crustal structure on strong ground motion attenuation
relations in eastern North America ; Bulletin of the Seismological
Society of America; Vol. 77; No. 2; 420-439
Wallace, T. C.; Helmberger, D. V.; et el. (1986) Reply
to comments by A. Douglas, J. B. Young, and N. S. Lyman and a note on
the revised moments for Pahute Mesa tectonic release ; Bulletin of
the Seismological Society of America; Vol. 76; No. 1; 313-318
Vidale, John; Helmberger, Donald V.; et el. (1985) Finite-difference
seismograms for SH waves ; Bulletin of the Seismological Society of
America; Vol. 75; No. 6; 1765-1782
Liu, Hsui-Lin and Helmberger, Donald V. (1985) The
23:19 aftershock of the 15 October 1979 Imperial Valley earthquake: More
evidence for an asperity ; Bulletin of the Seismological Society of
America; Vol. 75; No. 3; 689-708
Scott, Patricia and Helmberger, Donald V. (1985) Applications
of the transmitted Kirchhoff-Holmholtz method to transmitted body waves
and possible structural effects at NTS ; Bulletin of the
Seismological Society of America; Vol. 75; No. 1; 131-156
Wallace, Terry C.; Helmberger, Donald V.; et el. (1985) Evidence
of tectonic release from underground nuclear explosions in long-period S
waves ; Bulletin of the Seismological Society of America; Vol. 75;
No. 1; 157-174
Burdick, L. J.; Barker, J. S.; et el. (1985) Linear
Elastic Waveform Modeling in the Inelastic Region of Underground Nuclear
Explosions
Lay, Thorne; Helmberger, Don V.; et el. (1984) Source
models and yield-scaling relations for underground nuclear explosions at
Amchitka Island ; Bulletin of the Seismological Society of America;
Vol. 74; No. 3; 843-862
Lay, Thorne; Wallace, Terry C.; et el. (1984) The
effects of tectonic release on short-period P waves from NTS
explosions ; Bulletin of the Seismological Society of America; Vol.
74; No. 3; 819-842
Lay, Thorne and Helmberger, Donald V. (1983) Body-wave
amplitude and travel-time correlations across North America ;
Bulletin of the Seismological Society of America; Vol. 73; No. 4;
1063-1076
Liu, Hsui-Lin and Helmberger, Donald V. (1983) The
near-source ground motion of the 6 August 1979 Coyote Lake, California,
earthquake ; Bulletin of the Seismological Society of America; Vol.
73; No. 1; 201-218
Hadley, David M.; Helmberger, Donald V.; et el. (1982) Peak
acceleration scaling studies ; Bulletin of the Seismological Society
of America; Vol. 72; No. 3; 959-979
Ebel, John E. and Helmberger, Donald V. (1982) P-wave
complexity and fault asperities: The Borrego Mountain, California,
earthquake of 1968 ; Bulletin of the Seismological Society of
America; Vol. 72; No. 2; 413-437
Hartzell, Stephen and Helmberger, Donald V. (1982) Strong-motion
modeling of the Imperial Valley earthquake of 1979 ; Bulletin of the
Seismological Society of America; Vol. 72; No. 2; 571-596
Wallace, Terry C.; Helmberger, Don V.; et el. (1981) A
broadband study of the 13 August 1978 Santa Barbara earthquake ;
Bulletin of the Seismological Society of America; Vol. 71; No. 6;
1701-1718
Helmberger, Donald V. and Hadley, David M. (1981) Seismic
source functions and attenuation from local and teleseismic observations
of the NTS events Jorum and Handley ; Bulletin of the Seismological
Society of America; Vol. 71; No. 1; 51-67
Helmberger, D. V. and Engen, G. R. (1980) Modeling
the long-period body waves from shallow earthquakes at regional
ranges ; Bulletin of the Seismological Society of America; Vol. 70;
No. 5; 1699-1714
Hadley, David M. and Helmberger, Donald V. (1980) Simulation
of strong ground motions ; Bulletin of the Seismological Society of
America; Vol. 70; No. 2; 617-630
Heaton, Thomas H. and Helmberger, Donald V. (1979) Generalized
ray models of the San Fernando Earthquake ; Bulletin of the
Seismological Society of America; Vol. 69; No. 5; 1311-1341
Burdick, L. J. and Helmberger, D. V. (1979) Time
functions appropriate for nuclear explosions ; Bulletin of the
Seismological Society of America; Vol. 69; No. 4; 957-973
Helmberger, D. V. and Burdick, L. J. (1979) Synthetic
Seismograms ; Annual Review of Earth and Planetary Sciences; Vol. 7;
417-442; 10.1146/annurev.ea.07.050179.002221
Hong, Tai-Lin and Helmberger, Donald V. (1978) Glorified
optics and wave propagation in nonplanar structure ; Bulletin of the
Seismological Society of America; Vol. 68; No. 5; 1313-1330
Mellman, George R. and Helmberger, Donald V. (1978) A
modified first-motion approximation for the synthesis of body-wave
seismograms ; Geophysical Journal International; Vol. 54; No. 1;
129-140; 10.1111/j.1365-246X.1978.tb06760.x
Helmberger, D. V. and Engen, G. (1978) Fine
structure of an oceanic crustal section near the East Pacific Rise ;
Bulletin of the Seismological Society of America; Vol. 68; No. 2;
369-382
Harkrider, D. G. and Helmberger, D. V. (1978) A
note on nonequivalent quadrupole source cylindrical shear potentials
which give equal displacements ; Bulletin of the Seismological
Society of America; Vol. 68; No. 1; 125-132
Heaton, Thomas H. and Helmberger, Donald V. (1978) Predictability
of strong ground motion in the Imperial Valley: Modeling the M4.9,
November 4, 1976 Brawley earthquake ; Bulletin of the Seismological
Society of America; Vol. 68; No. 1; 31-48
Helmberger, Donald V. and Jennings, Paul C. (1978) Strong
ground motion : N.S.F. Seminar-Workshop Proceedings
Heaton, Thomas H. and Helmberger, Donald V. (1978) Synthesis
of San Fernando strong-motion records
Hong, Tai-Lin and Helmberger, Donald V. (1977) Generalized
ray theory for dipping structure ; Bulletin of the Seismological
Society of America; Vol. 67; No. 4; 995-1008
Heaton, Thomas H. and Helmberger, Donald V. (1977) A
study of the strong ground motion of the Borrego Mountain, California,
earthquake ; Bulletin of the Seismological Society of America; Vol.
67; No. 2; 315-330
Helmberger, Donald V. and Johnson, Lane R. (1977) Source
parameters of moderate size earthquakes and the importance of receiver
crustal structure in interpreting observations of local earthquakes ;
Bulletin of the Seismological Society of America; Vol. 67; No. 2;
301-313
King, David and Helmberger, Donald V. (1975) Time
functions appropriate for some aftershocks of the Point Mugu, California
earthquake of February 21, 1973 ; Bulletin of the Seismological
Society of America; Vol. 65; No. 1; 127-132
Langston, Charles A. and Helmberger, Donald
Interpretation
of body and Rayleigh waves from NTS to Tucson ; Bulletin of the
Seismological Society of America; Vol. 64; No. 6; 1919-1929
Mellman, George R. and Helmberger, Donald V. (1974) High-frequency
attenuation by a thin high-velocity layer ; Bulletin of the
Seismological Society of America; Vol. 64; No. 5; 1383-1388
Burdick, L. J. and Helmberger, D. V. (1974) Time
functions appropriate for deep earthquakes ; Bulletin of the
Seismological Society of America; Vol. 64; No. 5; 1419-1427
Helmberger, Donald V. (1974) Generalized
ray theory for shear dislocations ; Bulletin of the Seismological
Society of America; Vol. 64; No. 1; 45-64
Helmberger, Donald V. (1973) Numerical
seismograms of long-period body waves from seventeen to forty
degrees ; Bulletin of the Seismological Society of America; Vol. 63;
No. 2; 633-646
Allen, Clarence R. and Helmberger, Donald V. (1973) Search
for temporal changes in seismic velocities using large explosions in
southern California
Helmberger, D. V. and Harkrider, D. G. (1972) Seismic
Source Descriptions of Underground Explosions and a Depth
Discriminate ; Geophysical Journal International; Vol. 31; No. 1-3;
45-66; 10.1111/j.1365-246X.1972.tb02358.x
Helmberger, Donald V. (1972) Long-period
body-wave propagation from 4° to 13° ; Bulletin of the Seismological
Society of America; Vol. 62; No. 1; 325-341
Abrams, M.; Allen, C.; et el. (1971) Preliminary
seismological and geological studies of the San Fernando, California,
earthquake of February 9 1971 ; Bulletin of the Seismological Society
of America; Vol. 61; No. 2; 491-495
