A magnitude mb 5.6 earthquake occured in region: Tonga [Sea], on
and geographic coordinates (lat, lon) -21.7400, -176.9900 at 230 km depth.
The earthquake was located by: CSEM.
Search earthquakes: Any within 30 km radius
The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.
No Italian municipalities within 20 km distance.
No Italian municipalities within 100 km from the epicenter with at least 50000 inhabitants.
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
mb 5.6 | 2011-08-12 03:15:10 |
-21.74 | -176.99 | 230 | 2013-01-06 01:05:30 |
CSEM | 1270869 |
Field | Value |
---|---|
Time (UTC) | 2011-08-12 03:15:10 |
Latitude | -21.7400 |
Longitude | -176.9900 |
Depth (km) | 230 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> CSEM |
Event type | earthquake |
Origin ID | 1270869 |
Field | Value |
---|---|
Preferred uncertainty description | |
Semi-major axis of confidence ellipse (meter) | |
Semi-minor axis of confidence ellipse (meter) | |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | |
Circular confidence region, given by single value of horizontal uncertainty (meter) | |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | |
Number of associated phases, regardless of their use for origin computation | 17 |
Number of defining phases | 12 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.00000 |
Number of stations at which the event was observed | 17 |
Number of stations from which data was used for origin computation | 12 |
Field | Value |
---|---|
Value | 5.6 |
Uncertainty | |
Num. used stations | |
Type of magnitude | mb |
Reference to an origin | 1270869 |
Agency | INGV |
Autore | CSEM |
Time of creation (UTC) | 2013-01-06 01:05:30 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.FVI.HHN. | 2011-08-12T03:34:44.22 | 10.0 | undecidable | manual | PKP | 0 | 0 | 0 | ||
CH.BERNI.HHE. | 2011-08-12T03:34:41.65 | 10.0 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.TRIF.HHZ. | 2011-08-12T03:34:38.35 | 0.3 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.ATPC.HHZ. | 2011-08-12T03:34:38.14 | 0.3 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.SFI.EHZ. | 2011-08-12T03:34:37.99 | 0.3 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.FRON.EHZ. | 2011-08-12T03:34:37.41 | 0.3 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.SASS.HHZ. | 2011-08-12T03:34:37.94 | 0.3 | undecidable | manual | PKP | 0 | 0 | 0 | ||
GU.SATI.HHZ. | 2011-08-12T03:34:37.25 | 0.3 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.MPAG.EHZ. | 2011-08-12T03:34:37.89 | 0.3 | undecidable | manual | PKP | 0 | 0 | 0 | ||
NI.POLC.HHZ. | 2011-08-12T03:34:35.08 | 10.0 | undecidable | manual | PKP | 0 | 0 | 0 | ||
CH.FUSIO.HHZ. | 2011-08-12T03:34:35.51 | 0.3 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.STAL.HHN. | 2011-08-12T03:34:34.10 | 0.3 | undecidable | manual | PKP | 0 | 0 | 0 | ||
CH.DAVOX.HHZ. | 2011-08-12T03:34:34.09 | 10.0 | undecidable | manual | PKP | 0 | 0 | 0 | ||
NI.SABO.HHZ. | 2011-08-12T03:34:34.23 | 0.3 | undecidable | manual | PKP | 0 | 0 | 0 | ||
NI.ACOM.HHE. | 2011-08-12T03:34:33.33 | 0.3 | undecidable | manual | PKP | 0 | 0 | 0 | ||
CH.FUORN.HHZ. | 2011-08-12T03:34:32.01 | 0.3 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.BRMO.HHZ. | 2011-08-12T03:34:27.62 | 10.0 | undecidable | manual | PKP | 0 | 0 | 0 |