The location and source parameters of the Lompoc, California, earthquake of 4 November 1927

D. V. Helmberger; P. G. Somerville; Edward Garnero

The location and source parameters of the Lompoc, California, earthquake of 4 November 1927

D. V. Helmberger, P. G. Somerville, Edward Garnero

Research output: Chapter in Book/Report/Conference proceeding › Chapter

Abstract

The relocation, magnitudes, and the style of faulting of the Lompoc earthquake are reported from a sparse assortment of teleseismic and regional seismograms. Recordings of modern events have been used for comparison with the 1927 records. The results indicate a north-northwesterly striking reverse event located about 40km west of Point Conception, a body-wave moment of 1×10²⁶dyne-cm, a trapezoidal time history of (2,2,2) sec. and a source depth of 10km. The weak beginning of the Pnl wavetrain at Berkeley indicates some source complexity, which is characteristic of many large events. The fault parameters are strike =N20°W, dip =66°NE, and rake =95°. The body waves of the Loma Prieta event (M_s =7.1) appear distinctly larger than those of the Lompoc event. -from Authors

Original language	English (US)
Title of host publication	Bulletin - Seismological Society of America
Pages	1678-1709
Number of pages	32
Volume	82
Edition	4
State	Published - 1992
Externally published	Yes

ASJC Scopus subject areas

General Earth and Planetary Sciences
General Environmental Science

Cite this

@inbook{52c538e4538e46408da320f60357113f,

title = "The location and source parameters of the Lompoc, California, earthquake of 4 November 1927",

abstract = "The relocation, magnitudes, and the style of faulting of the Lompoc earthquake are reported from a sparse assortment of teleseismic and regional seismograms. Recordings of modern events have been used for comparison with the 1927 records. The results indicate a north-northwesterly striking reverse event located about 40km west of Point Conception, a body-wave moment of 1×1026dyne-cm, a trapezoidal time history of (2,2,2) sec. and a source depth of 10km. The weak beginning of the Pnl wavetrain at Berkeley indicates some source complexity, which is characteristic of many large events. The fault parameters are strike =N20°W, dip =66°NE, and rake =95°. The body waves of the Loma Prieta event (Ms =7.1) appear distinctly larger than those of the Lompoc event. -from Authors",

author = "Helmberger, {D. V.} and Somerville, {P. G.} and Edward Garnero",

year = "1992",

language = "English (US)",

volume = "82",

pages = "1678--1709",

booktitle = "Bulletin - Seismological Society of America",

edition = "4",

}

TY - CHAP

T1 - The location and source parameters of the Lompoc, California, earthquake of 4 November 1927

AU - Helmberger, D. V.

AU - Somerville, P. G.

AU - Garnero, Edward

PY - 1992

Y1 - 1992

N2 - The relocation, magnitudes, and the style of faulting of the Lompoc earthquake are reported from a sparse assortment of teleseismic and regional seismograms. Recordings of modern events have been used for comparison with the 1927 records. The results indicate a north-northwesterly striking reverse event located about 40km west of Point Conception, a body-wave moment of 1×1026dyne-cm, a trapezoidal time history of (2,2,2) sec. and a source depth of 10km. The weak beginning of the Pnl wavetrain at Berkeley indicates some source complexity, which is characteristic of many large events. The fault parameters are strike =N20°W, dip =66°NE, and rake =95°. The body waves of the Loma Prieta event (Ms =7.1) appear distinctly larger than those of the Lompoc event. -from Authors

AB - The relocation, magnitudes, and the style of faulting of the Lompoc earthquake are reported from a sparse assortment of teleseismic and regional seismograms. Recordings of modern events have been used for comparison with the 1927 records. The results indicate a north-northwesterly striking reverse event located about 40km west of Point Conception, a body-wave moment of 1×1026dyne-cm, a trapezoidal time history of (2,2,2) sec. and a source depth of 10km. The weak beginning of the Pnl wavetrain at Berkeley indicates some source complexity, which is characteristic of many large events. The fault parameters are strike =N20°W, dip =66°NE, and rake =95°. The body waves of the Loma Prieta event (Ms =7.1) appear distinctly larger than those of the Lompoc event. -from Authors

UR - http://www.scopus.com/inward/record.url?scp=0027099427&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0027099427&partnerID=8YFLogxK

M3 - Chapter

AN - SCOPUS:0027099427

VL - 82

SP - 1678

EP - 1709

BT - Bulletin - Seismological Society of America

ER -

The location and source parameters of the Lompoc, California, earthquake of 4 November 1927

Abstract

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this