A magnitude Mw 6.1 earthquake occured in region: Tonga Islands [Sea: Tonga], on
and geographic coordinates (lat, lon) -20.8000, -174.2000 at 2 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 |
Mw 6.1 | 2009-07-30 20:05:34 |
-20.8 | -174.2 | 2 | 2013-01-05 17:53:54 |
CSEM | 938749 |
Field | Value |
---|---|
Time (UTC) | 2009-07-30 20:05:34 |
Latitude | -20.8000 |
Longitude | -174.2000 |
Depth (km) | 2 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> CSEM |
Event type | earthquake |
Origin ID | 938749 |
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 | 33 |
Number of defining phases | 30 |
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 | 33 |
Number of stations from which data was used for origin computation | 30 |
Field | Value |
---|---|
Value | 6.1 |
Uncertainty | |
Num. used stations | |
Type of magnitude | Mw |
Reference to an origin | 938749 |
Agency | INGV |
Autore | CSEM |
Time of creation (UTC) | 2013-01-05 17:53:54 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.T0104.EHZ. | 2009-07-30T20:26:17.57 | 10.0 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.SGO.SHZ. | 2009-07-30T20:26:10.84 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.MRB1.HHZ. | 2009-07-30T20:26:07.95 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.CIGN.HHZ. | 2009-07-30T20:26:05.64 | 3.0 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.FRES.HHZ. | 2009-07-30T20:26:04.04 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.NRCA.SHZ. | 2009-07-30T20:26:02.59 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.CESI.HHZ. | 2009-07-30T20:26:02.45 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.SSY.HHN. | 2009-07-30T20:25:37.44 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.SERS.HHZ. | 2009-07-30T20:25:35.19 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.MMN.HHZ. | 2009-07-30T20:25:33.91 | 10.0 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.CDRU.HHZ. | 2009-07-30T20:25:32.98 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.MNS.HHZ. | 2009-07-30T20:25:32.03 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.PALZ.HHZ. | 2009-07-30T20:25:32.69 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
MN.AQU.HHZ. | 2009-07-30T20:25:32.69 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.PIEI.HHN. | 2009-07-30T20:25:31.56 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.RSM.HHZ. | 2009-07-30T20:25:31.45 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.GUMA.HHZ. | 2009-07-30T20:25:31.54 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.MURB.HHZ. | 2009-07-30T20:25:31.14 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.ZCCA.HHZ. | 2009-07-30T20:25:31.57 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.PARC.HHZ. | 2009-07-30T20:25:31.49 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
MN.PDG.HHN. | 2009-07-30T20:25:30.18 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
HL.KEK.BHZ. | 2009-07-30T20:25:30.61 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
CH.DIX.HHZ. | 2009-07-30T20:25:30.02 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.CSNT.HHZ. | 2009-07-30T20:25:30.26 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.SGG.HHN. | 2009-07-30T20:25:30.75 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
MN.VLC.HHZ. | 2009-07-30T20:25:29.58 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
MN.BLY.HHZ. | 2009-07-30T20:25:28.86 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
CH.FUORN.HHZ. | 2009-07-30T20:25:28.80 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
CH.BERNI.HHZ. | 2009-07-30T20:25:28.31 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
IV.BRMO.HHE. | 2009-07-30T20:25:27.99 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
OE.WTTA.HHZ. | 2009-07-30T20:25:27.17 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
MN.TUE.HHZ. | 2009-07-30T20:25:26.99 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 | ||
CH.DAVOX.HHN. | 2009-07-30T20:25:22.85 | 0.1 | undecidable | manual | PKP | 0 | 0 | 0 |