A magnitude mb 4.9 earthquake occured in region: Tonga Islands [Sea: Tonga], on
and geographic coordinates (lat, lon) -15.1000, -173.5000 at 10 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 4.9 | 2009-09-30 15:20:16 |
-15.1 | -173.5 | 10 | 2013-01-05 18:33:42 |
CSEM | 970999 |
Field | Value |
---|---|
Time (UTC) | 2009-09-30 15:20:16 |
Latitude | -15.1000 |
Longitude | -173.5000 |
Depth (km) | 10 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> CSEM |
Event type | earthquake |
Origin ID | 970999 |
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 | 11 |
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 | 11 |
Field | Value |
---|---|
Value | 4.9 |
Uncertainty | |
Num. used stations | |
Type of magnitude | mb |
Reference to an origin | 970999 |
Agency | INGV |
Autore | CSEM |
Time of creation (UTC) | 2013-01-05 18:33:42 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.SDI.SHZ. | 2009-09-30T15:40:11.94 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.SMA1.EHZ. | 2009-09-30T15:40:11.10 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.SNTG.SHZ. | 2009-09-30T15:40:10.61 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.CING.HHZ. | 2009-09-30T15:40:10.17 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.GRFL.SHZ. | 2009-09-30T15:40:10.65 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.PARC.HHZ. | 2009-09-30T15:40:10.12 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.VMG.SHZ. | 2009-09-30T15:40:09.36 | 0.3 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.SFI.EHZ. | 2009-09-30T15:40:09.93 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.ERBM.EHZ. | 2009-09-30T15:40:09.30 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.PIEI.HHZ. | 2009-09-30T15:40:09.86 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.ORO.SHZ. | 2009-09-30T15:40:06.00 | 10.0 | undecidable | manual | PKP | 0 | 0 | 0 | ||
MN.BLY.HHZ. | 2009-09-30T15:40:05.15 | 10.0 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.BRMO.HHZ. | 2009-09-30T15:40:03.60 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.RSM.HHZ. | 2009-09-30T15:40:01.40 | 10.0 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.NRCA.SHZ. | 2009-09-30T15:39:44.81 | 10.0 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.SBPO.HHZ. | 2009-09-30T15:39:43.50 | 10.0 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.ORI.HHZ. | 2009-09-30T15:39:36.49 | 10.0 | undecidable | manual | PKP | 0 | 0 | 0 |