Seismo-Watch

Special Earthquake Report No: 99-005

Regional Location:

Preliminary Magnitude:

Moment Magnitude:

Greenwich Mean Date:
Greenwich Mean Time:
Latitude:
Longitude:
Focal Depth (km):
Analysis Quality (A-D):

Santa Cruz / Vanuatu Islands, Melanesia

7.3 Ms (NEIC)

7.3 Mw (NEIC)

99/02/06
21:47:59
12.96S
166.67E
76 km
B

Seismo-Watch,
Your Source for
Earthquake Information

EARTHQUAKE EPICENTER
Click On Image

TRACK GLOBAL AND REGIONAL SEISMIC ACTIVITY WITH SEISMO-WATCH EARTHQUAKE REPORTS
GLOBAL

OTHER SEISMO-WATCH EARTHQUAKE REPORTS
WESTERN GREAT BASIN
 
SOUTHERN CALIFORNIA
 
NORTHERN CALIFORNIA
Notations:
A powerful earthquake registering a preliminary magnitude of Ms 7.3 (NEIC), Mw 7.3 (NEIC) occurred at 21:47:59 UTC, February 06 (10:47 a.m. Local Time, February 7), in the Santa Cruz / Vanuatu Islands region, Melanesia. The depth was placed at 76 km beneath the surface and the NEIC focal mechanism suggested thrust motion along a moderate dipping, north-south trenting fault plane, with a slight dip-slip component. It was centered in the passage between Utupua Island, Santa Cruz Islands and Torres Islands, Vanuatu Islands (see map).
 
There have been no reports of damage at this time. Local tsunami warnings were issued for all the islands in the immediate region, however, no wave were reported. Local officials have reported no damage (see AP news report).
 
The quake triggered near the northern termination of the Northern New Hebridges trench, a prominent east-facing subduction zone where the Australian plate is being forced under the Fiji microplate. A huge M7.9 earthquake struck this same area on March 21, 1997, but it triggered closer to the surface. Twenty-six temblors registering M7.5 or stronger have rocked the Northern Herbridges subduction zone since 1900; five of these have measured as large as M7.9 and one registered M8.1 in 1934. Here is a list of these events. For a complete listing of M7's in this region since 1900 click here.

1900  7 29  659  0.0000  -10.0000  165.0000    0.0000   7.60  ABE
1910 11  9  602  0.0000  -16.0000  166.0000   70.0000   7.50  ABE
1910 12 10  926 42.0000  -11.0000  162.5000   50.0000   7.50  ABE
1913 10 14  808 48.0000  -19.5000  169.0000  230.0000   7.60  ABE
1920  9 20 1439  0.0000  -20.0000  168.0000    0.0000   7.90  ABE
1931 10  3 1913 13.0000  -10.5000  161.7500    0.0000   7.90  ABE
1931 10 10   19 53.0000  -10.0000  161.0000    0.0000   7.80  ABE
1934  7 18 1940 15.0000  -11.7500  166.5000    0.0000   8.10  ABE
1950 12  2 1951 49.0000  -18.2500  167.5000   60.0000   7.60  ABE
1963  9 15   46 48.0000  -10.4000  165.6000    0.0000   7.50  ABE
1966  6 15   59 46.0000  -10.4000  160.9000   34.0000   7.70  ABE
1966 12 31 1823  9.0000  -11.9000  166.4000   60.0000   7.90  ABE
1970  8 11 1022 20.0000  -14.1230  166.6500   33.0000   7.50  PDE
1973 12 28 1341 45.8000  -14.4640  166.6010   26.0000   7.80  PDE
1977  4 21  424  9.0000  -10.0000  160.8000   31.0000   7.60  ABE
1980  7 17 1942 23.0000  -12.5000  165.9000   33.0000   7.70  ABE
1982  8  5 2032 52.9500  -12.5970  165.9310   30.0000   7.50  PDE
1984  2  7 2133 21.4900  -10.0120  160.4690   18.0000   7.70  PDE
1985 11 28  349 54.1500  -13.9870  166.1850   33.0000   7.60  PDE
1985 12 21  113 22.4100  -13.9660  166.5160   43.0000   7.60  PDE
1980  7 17 1942 23.0000  -12.5000  165.9000   33.0000   7.70  ABE
1982  8  5 2032 52.9500  -12.5970  165.9310   30.0000   7.50  PDE
1984  2  7 2133 21.4900  -10.0120  160.4690   18.0000   7.70  PDE
1985 11 28  349 54.1500  -13.9870  166.1850   33.0000   7.60  PDE
1985 12 21  113 22.4100  -13.9660  166.5160   43.0000   7.60  PDE
1997 04 21 1202 26.4000  -12.584   166.676E   33.0000   7.90  WHDF

Did you feel this tremor? .
 
A similar copy of this earthquake report was sent to subscribers of the Seismo-Watch Earthquake Fax Alert Bulletins within hours of the event.

Feel free to browse other Seismo-Watch Significant Earthquake Reports.

Stay informed, Stay Safe. Subscribe to Seismo-Watch Global and Regional Earthquake Reports. Six global and regional earthquake reports to choose from, including two FREE Brief Regional Reports. Stay informed with FREE e-mail updates to the Seismo-Watch Online Earthquake Reports.

Don't forget our FREE Brief Central California Earthquake Report! Covering all the earthquake activity for the Central California region, including the ever active creeping segments of the San Andreas and Calaveras faults.
 
Updated weekly. Subscribe to our FREE Update e-mail messages NOW.
Subtract 8 hours from Greenwich Mean Time to obtain PST or 5 hours for EDT
Location Quality: A (good), B (fair), C (poor), D (bad)
Magnitude: Ml (local or Richter magnitude), Lg (mblg), Md (duration), Mb (body wave), Ms (surface wave), Mw (moment)

Standard Sources Include:
U.S. Geological Survey, National Earthquake Information Center, Golden, CO (NEIC)
Harvard Geophysical Observatory, Harvard University, Cambridge, MA (HRV)
U.S. Geological Survey, Northern California Seismic Network (NCSN)
University of California, Berkeley, Seismological Laboratory (UCBSL)
California Institute of Technology, Pasadena, California (Caltech)
various wire reports and/or personal communications

All data are preliminary and subject to change.
Copyright © 1999 Advanced Geologic Exploration, Inc.
Voice: 775-852-0992 / Fax: 775-852-3226
e-mail:
Web Site: https://seismo-watch.com
Re-transmission prohibited. All rights reserved.
NEWS MEDIA: Please site Seismo-Watch as your source


Seismo-Watch, Inc.
P.O. Box 18012 , Reno, NV 89511-8012
Toll Free 24 hour Message Line 1-800-852-2960
Office: 775-852-0992 / Fax: 775-852-3226
e-mail: