A magnitude Md 2.0 earthquake occured in region: 3 km E Vallo di Nera (PG), on
and geographic coordinates (lat, lon) 42.7800, 12.8950 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 |
---|---|---|---|---|
Vallo di Nera | PG | 3 | 364 | 364 |
Cerreto di Spoleto | PG | 5 | 1075 | 1439 |
Sant'Anatolia di Narco | PG | 7 | 564 | 2003 |
Poggiodomo | PG | 8 | 117 | 2120 |
Scheggino | PG | 9 | 461 | 2581 |
Campello sul Clitunno | PG | 11 | 2442 | 5023 |
Cascia | PG | 12 | 3217 | 8240 |
Sellano | PG | 13 | 1079 | 9319 |
Spoleto | PG | 14 | 38218 | 47537 |
Monteleone di Spoleto | PG | 15 | 599 | 48136 |
Preci | PG | 16 | 724 | 48860 |
Trevi | PG | 16 | 8469 | 57329 |
Norcia | PG | 16 | 4957 | 62286 |
Castel Ritaldi | PG | 19 | 3278 | 65564 |
Ferentillo | TR | 20 | 1913 | 67477 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
Md 2.0 | 1991-07-31 10:31:40 |
42.78 | 12.895 | 10 | 2013-07-15 08:41:04 |
Bollettino Sismico Italiano INGV | 146589 |
Field | Value |
---|---|
Time (UTC) | 1991-07-31 10:31:40 ± 0.258 |
Latitude | 42.7800 ± 0.0118 |
Longitude | 12.8950 ± 0.0397 |
Depth (km) | 10 (operator assigned) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 146589 |
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) | 3496.3 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 178 |
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) | 0.6 |
Epicentral distance of station closest to the epicenter (degree) | 0.00300 |
Epicentral distance of station farthest from the epicenter (degree) | 0.00648 |
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 | 2.0 |
Uncertainty | |
Num. used stations | 3 |
Type of magnitude | Md |
Reference to an origin | 146589 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 19:16:49 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.ARV.Z. | 1991-07-31T10:32:05.50 | 10.0 | undecidable | manual | SG | 2 | 0.7215 | -0.43 | 0.6 | |
--.CIO.Z. | 1991-07-31T10:31:56.72 | 10.0 | undecidable | manual | SG | 23 | 0.444 | -0.64 | 0.6 | |
--.MNS.Z. | 1991-07-31T10:31:55.74 | 10.0 | undecidable | manual | SG | 201 | 0.4218 | -0.73 | 0.5 | |
--.ARV.Z. | 1991-07-31T10:31:54.78 | 10.0 | undecidable | manual | PG | 2 | 0.7215 | -0.57 | 1.2 | |
--.ASS.Z. | 1991-07-31T10:31:53.11 | 10.0 | undecidable | manual | SG | 327 | 0.333 | -0.43 | 0.6 | |
--.CIO.Z. | 1991-07-31T10:31:51.11 | 10.0 | undecidable | manual | PG | 23 | 0.444 | 0.7 | 1.3 | |
--.ASS.Z. | 1991-07-31T10:31:49.11 | 10.0 | undecidable | manual | PG | 327 | 0.333 | 0.91 | 1 | |
--.MNS.Z. | 1991-07-31T10:31:49.95 | 10.0 | undecidable | manual | PG | 201 | 0.4218 | 0.05 | 2.4 |