| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
LAMONT GEOLOGICAL OBSERVATORY (COLUMBIA UNIVERSITY),, PALISADES, N. Y.
Abstract
A SHORT-PERIOD phase, 0.5 sec. period or less, traveling through the ocean with the velocity of sound in water has been identified on a large number of seismograms of earthquakes occurring at sea. This arrival was identified on the Benioff short-period seismograms of the Weston, Fordham, and Ottawa stations for a series of Dominican Republic shocks, and on the Benioff short-period seismograms of the Pasadena network of stations and the Mount Hamilton and Mineral stations for a series of major Japanese and Aleutian shocks.
The existence of this phase had been noted previously by Linehan, who was at a loss to provide an explanation for them. The mechanism of propagation of the T phase is discussed and several practical applications are described.
Footnotes
* Manuscript received for publication May 23, 1949.
The research reported in this document has been made possible through support and sponsorship extended by the Geophysical Research Directorate of the Cambridge Field Station, AMC, U. S. Air Force, under Contract W-28-099 ac-396. It is published for technical information only and does not represent recommendations or conclusions of the sponsoring agency.
This article has been cited by other articles:
|
|
 |
|
  Improving Epicentral and Magnitude Estimation of Earthquakes from T Phases by Considering the Excitation Function Bulletin of the Seismological Society of America, October 1, 2003; 93(5): 2106 - 2122.
|
|
|
|
 |
|
 J. S. Floyd, M. Tolstoy, J. C. Mutter, and C. H. Scholz Seismotectonics of Mid-Ocean Ridge Propagation in Hess Deep Science, November 29, 2002; 298(5599): 1765 - 1768. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
Constraining Continental Margin Seismicity by Extending On-Shore Seismograph Stations to Critical Off-Shore Sites Bulletin of the Seismological Society of America, April 1, 2000; 90(2): 414 - 424.
|
|
|
|
|
|
D. B. Harris, G. D'Spain, and A. Goldner Regional observation of a nuclear test from a vertical hydrophone array Bulletin of the Seismological Society of America, August 1, 1994; 84(4): 1148 - 1153. [Abstract] [PDF]
|
|
|
|
|
|
D. A. WALKER, C. S. MCCREERY, and Y. HIYOSHI T-phase spectra, seismic moments, and tsunamigenesis Bulletin of the Seismological Society of America, June 1, 1992; 82(3): 1275 - 1305. [Abstract] [PDF]
|
|
|
|
|
|
J. TALANDIER and E. A. OKAL Human perception of T waves: The June 22, 1977 Tonga earthquake felt on Tahiti Bulletin of the Seismological Society of America, October 1, 1979; 69(5): 1475 - 1486. [Abstract] [PDF]
|
|
|
|
|
|
J. NORTHROP T phases from 80 Alaskan earthquakes, March 28-31, 1964 Bulletin of the Seismological Society of America, February 1, 1965; 55(1): 59 - 63. [Abstract] [PDF]
|
|
|
|
|
|
A. R. MILNE Comparison of spectra of an earthquake T-phase with similar signals from nuclear explosions Bulletin of the Seismological Society of America, October 1, 1959; 49(4): 317 - 329. [Abstract] [PDF]
|
|
|
|
|
|
D. H. SHURBET and M. EWING T phases at Bermuda and transformation of elastic waves Bulletin of the Seismological Society of America, July 1, 1957; 47(3): 251 - 262. [Abstract] [PDF]
|
|
|
|
|
|
D. H. SHURBET Bermuda T phases with large continental paths Bulletin of the Seismological Society of America, January 1, 1955; 45(1): 23 - 35. [Abstract] [PDF]
|
|
|
|
|
|
I. TOLSTOY Dispersive properties of a fluid layer overlying a semi-infinite elastic solid Bulletin of the Seismological Society of America, July 1, 1954; 44(3): 493 - 512. [Abstract] [PDF]
|
|
|
|
|
|
M. EWING, F. PRESS, and J. L. WORZEL Further study of the T phase Bulletin of the Seismological Society of America, January 1, 1952; 42(1): 37 - 51. [Abstract] [PDF]
|
|
|
|
|
|
M. A. BIOT The interaction of Rayleigh and Stoneley waves in the ocean bottom Bulletin of the Seismological Society of America, January 1, 1952; 42(1): 81 - 93. [Abstract] [PDF]
|
|
|
|
|
|
L. D. LEET Discussion of "Proposed use of the T phase in tsunami warning systems" Bulletin of the Seismological Society of America, April 1, 1951; 41(2): 165 - 167. [Abstract] [PDF]
|
|
|
|
|
|
F. PRESS, M. EWING, and I. TOLSTOY The Airy phase of shallow-focus submarine earthquakes Bulletin of the Seismological Society of America, April 1, 1950; 40(2): 111 - 148. [Abstract] [PDF]
|
|
|
|
|
|
M. EWING, I. TOLSTOY, and F. PRESS Proposed use of the T phase in tsunami warning systems Bulletin of the Seismological Society of America, January 1, 1950; 40(1): 53 - 58. [Abstract] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
