A magnitude Md 2.5 earthquake occured in region: 4 km SE Norcia (PG), on
and geographic coordinates (lat, lon) 42.7720, 13.1310 at 10 km depth.
The earthquake was located by: Bollettino Sismico Italiano INGV.
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.
Municipality | Region | Distance (km) | Inhabitants | Cumulative Inhabitants |
---|---|---|---|---|
Norcia | PG | 4 | 4957 | 4957 |
Cascia | PG | 11 | 3217 | 8174 |
Accumoli | RI | 13 | 667 | 8841 |
Arquata del Tronto | AP | 14 | 1178 | 10019 |
Castelsantangelo sul Nera | MC | 14 | 281 | 10300 |
Preci | PG | 14 | 724 | 11024 |
Cittareale | RI | 17 | 482 | 11506 |
Poggiodomo | PG | 17 | 117 | 11623 |
Visso | MC | 18 | 1107 | 12730 |
Cerreto di Spoleto | PG | 18 | 1075 | 13805 |
Montegallo | AP | 18 | 523 | 14328 |
Ussita | MC | 19 | 444 | 14772 |
Monteleone di Spoleto | PG | 20 | 599 | 15371 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
Md 2.5 | 1991-05-22 14:31:27 |
42.772 | 13.131 | 10 | 2013-07-15 08:41:04 |
Bollettino Sismico Italiano INGV | 141739 |
Field | Value |
---|---|
Time (UTC) | 1991-05-22 14:31:27 ± 0.642 |
Latitude | 42.7720 ± 0.0166 |
Longitude | 13.1310 ± 0.0590 |
Depth (km) | 10 (operator assigned) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 141739 |
Field | Value |
---|---|
Preferred uncertainty description | horizontal uncertainty |
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) | 5155.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 231 |
Number of associated phases, regardless of their use for origin computation | 8 |
Number of defining phases | 8 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.5 |
Epicentral distance of station closest to the epicenter (degree) | 0.00405 |
Epicentral distance of station farthest from the epicenter (degree) | 0.01085 |
Number of stations at which the event was observed | 4 |
Number of stations from which data was used for origin computation | 4 |
Field | Value |
---|---|
Value | 2.5 |
Uncertainty | |
Num. used stations | 3 |
Type of magnitude | Md |
Reference to an origin | 141739 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 19:12:19 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.CRE.Z. | 1991-05-22T14:32:07.00 | 10.0 | undecidable | manual | SN | 314 | 1.1988 | 0.64 | 0.5 | |
--.ARV.Z. | 1991-05-22T14:31:52.00 | 10.0 | undecidable | manual | SG | 349 | 0.7326 | -0.82 | 0.4 | |
--.CRE.Z. | 1991-05-22T14:31:51.50 | 10.0 | undecidable | manual | PN | 314 | 1.1988 | 1.71 | 0.2 | |
--.MNS.Z. | 1991-05-22T14:31:45.00 | 10.0 | undecidable | manual | SG | 220 | 0.4995 | -0.43 | 0.7 | |
--.ASS.Z. | 1991-05-22T14:31:43.50 | 10.0 | undecidable | manual | SG | 309 | 0.444 | -0.19 | 0.8 | |
--.ARV.Z. | 1991-05-22T14:31:41.50 | 10.0 | undecidable | manual | PG | 349 | 0.7326 | -0.48 | 1.6 | |
--.MNS.Z. | 1991-05-22T14:31:37.50 | 10.0 | undecidable | manual | PG | 220 | 0.4995 | -0.21 | 1.9 | |
--.ASS.Z. | 1991-05-22T14:31:36.50 | 10.0 | undecidable | manual | PG | 309 | 0.444 | -0.21 | 1.9 |