A magnitude Md 2.1 earthquake occured in region: 4 km NW Trevi (PG), on
and geographic coordinates (lat, lon) 42.9050, 12.7190 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 |
---|---|---|---|---|
Trevi | PG | 4 | 8469 | 8469 |
Montefalco | PG | 6 | 5679 | 14148 |
Foligno | PG | 6 | 57155 | 71303 |
Bevagna | PG | 10 | 5081 | 76384 |
Castel Ritaldi | PG | 10 | 3278 | 79662 |
Campello sul Clitunno | PG | 11 | 2442 | 82104 |
Spello | PG | 11 | 8645 | 90749 |
Gualdo Cattaneo | PG | 13 | 6155 | 96904 |
Giano dell'Umbria | PG | 14 | 3846 | 100750 |
Cannara | PG | 15 | 4305 | 105055 |
Sellano | PG | 17 | 1079 | 106134 |
Valtopina | PG | 18 | 1398 | 107532 |
Cerreto di Spoleto | PG | 19 | 1075 | 108607 |
Spoleto | PG | 19 | 38218 | 146825 |
Vallo di Nera | PG | 19 | 364 | 147189 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
Md 2.1 | 1987-05-22 09:31:40 |
42.905 | 12.719 | 10 | 2013-07-15 08:41:04 |
Bollettino Sismico Italiano INGV | 47529 |
Field | Value |
---|---|
Time (UTC) | 1987-05-22 09:31:40 ± 0.235 |
Latitude | 42.9050 ± 0.0115 |
Longitude | 12.7190 ± 0.0139 |
Depth (km) | 10 (operator assigned) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 47529 |
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) | 1706.4 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 241 |
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) | 0.00146 |
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 | 2.1 |
Uncertainty | |
Num. used stations | 1 |
Type of magnitude | Md |
Reference to an origin | 47529 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 17:46:34 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.ALP.Z. | 1987-05-22T09:32:03.33 | 10.0 | undecidable | manual | SG | 100 | 0.6327 | 0.27 | 0.3 | |
--.CM8.Z. | 1987-05-22T09:31:56.41 | 10.0 | undecidable | manual | SG | 46 | 0.4218 | 0.07 | 0.9 | |
--.ALP.Z. | 1987-05-22T09:31:53.63 | 10.0 | undecidable | manual | PG | 100 | 0.6327 | -0.02 | 1.6 | |
--.CM8.Z. | 1987-05-22T09:31:49.17 | 10.0 | undecidable | manual | PG | 46 | 0.4218 | -0.59 | 0.4 | |
--.ASS.Z. | 1987-05-22T09:31:48.00 | 10.0 | undecidable | manual | SG | 342 | 0.1665 | 0.01 | 0.8 | |
--.ASS.Z. | 1987-05-22T09:31:45.00 | 10.0 | undecidable | manual | PG | 342 | 0.1665 | 0.05 | 2 |