A magnitude Md 2.3 earthquake occured in region: 2 km SW Preci (PG), on
and geographic coordinates (lat, lon) 42.8660, 13.0210 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 |
---|---|---|---|---|
Preci | PG | 2 | 724 | 724 |
Sellano | PG | 8 | 1079 | 1803 |
Visso | MC | 9 | 1107 | 2910 |
Cerreto di Spoleto | PG | 10 | 1075 | 3985 |
Norcia | PG | 10 | 4957 | 8942 |
Castelsantangelo sul Nera | MC | 11 | 281 | 9223 |
Ussita | MC | 13 | 444 | 9667 |
Monte Cavallo | MC | 14 | 145 | 9812 |
Cascia | PG | 16 | 3217 | 13029 |
Vallo di Nera | PG | 17 | 364 | 13393 |
Poggiodomo | PG | 18 | 117 | 13510 |
Fiordimonte | MC | 20 | 202 | 13712 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
Md 2.3 | 1985-08-31 11:28:29 |
42.866 | 13.021 | 10 | 2013-07-15 08:41:04 |
Bollettino Sismico Italiano INGV | 12549 |
Field | Value |
---|---|
Time (UTC) | 1985-08-31 11:28:29 ± 0.357 |
Latitude | 42.8660 ± 0.0171 |
Longitude | 13.0210 ± 0.0199 |
Depth (km) | 10 (operator assigned) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 12549 |
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) | 2494.8 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 291 |
Number of associated phases, regardless of their use for origin computation | 6 |
Number of defining phases | 6 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.2 |
Epicentral distance of station closest to the epicenter (degree) | 0.00300 |
Epicentral distance of station farthest from the epicenter (degree) | 0.00567 |
Number of stations at which the event was observed | 3 |
Number of stations from which data was used for origin computation | 3 |
Field | Value |
---|---|
Value | 2.3 |
Uncertainty | |
Num. used stations | 2 |
Type of magnitude | Md |
Reference to an origin | 12549 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 17:15:47 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.AR1.Z. | 1985-08-31T11:28:51.50 | 10.0 | undecidable | manual | SG | 354 | 0.6327 | -0.2 | 0.5 | |
--.AR1.Z. | 1985-08-31T11:28:42.00 | 10.0 | undecidable | manual | PG? | 354 | 0.6327 | -0.28 | 0.2 | |
--.AS1.Z. | 1985-08-31T11:28:42.50 | 10.0 | undecidable | manual | SG | 305 | 0.333 | 0.46 | 0.1 | |
--.CM2.Z. | 1985-08-31T11:28:42.20 | 10.0 | undecidable | manual | SG | 14 | 0.333 | 0.02 | 1.1 | |
--.AS1.Z. | 1985-08-31T11:28:36.50 | 10.0 | undecidable | manual | PG | 305 | 0.333 | -0.2 | 1.1 | |
--.CM2.Z. | 1985-08-31T11:28:36.90 | 10.0 | undecidable | manual | PG | 14 | 0.333 | 0.12 | 3 |