A magnitude Md 1.9 earthquake occured in region: 5 km W Valfabbrica (PG), on
and geographic coordinates (lat, lon) 43.1620, 12.5440 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 |
---|---|---|---|---|
Valfabbrica | PG | 5 | 3389 | 3389 |
Bastia Umbra | PG | 11 | 21874 | 25263 |
Assisi | PG | 12 | 28299 | 53562 |
Perugia | PG | 14 | 166134 | 219696 |
Bettona | PG | 17 | 4367 | 224063 |
Torgiano | PG | 18 | 6725 | 230788 |
Cannara | PG | 19 | 4305 | 235093 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
Md 1.9 | 1987-05-21 18:27:44 |
43.162 | 12.544 | 10 | 2013-07-15 08:41:04 |
Bollettino Sismico Italiano INGV | 47499 |
Field | Value |
---|---|
Time (UTC) | 1987-05-21 18:27:44 ± 0.18 |
Latitude | 43.1620 ± 0.0135 |
Longitude | 12.5440 ± 0.0091 |
Depth (km) | 10 (operator assigned) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 47499 |
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) | 1671.3 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 204 |
Number of associated phases, regardless of their use for origin computation | 5 |
Number of defining phases | 5 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.1 |
Epicentral distance of station closest to the epicenter (degree) | 0.00105 |
Epicentral distance of station farthest from the epicenter (degree) | 0.00389 |
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 | 1.9 |
Uncertainty | |
Num. used stations | 1 |
Type of magnitude | Md |
Reference to an origin | 47499 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 17:46:33 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.CM8.Z. | 1987-05-21T18:28:00.96 | 10.0 | undecidable | manual | SG | 85 | 0.4329 | 0.42 | 0 | |
--.CM8.Z. | 1987-05-21T18:27:53.56 | 10.0 | undecidable | manual | PG | 85 | 0.4329 | -0.21 | 0.7 | |
--.ASS.Z. | 1987-05-21T18:27:50.50 | 10.0 | undecidable | manual | SG | 141 | 0.1221 | -0.04 | 0.7 | |
--.PRG.Z. | 1987-05-21T18:27:48.00 | 10.0 | undecidable | manual | PG | 240 | 0.1221 | 0.07 | 1.7 | |
--.ASS.Z. | 1987-05-21T18:27:48.00 | 10.0 | undecidable | manual | PG | 141 | 0.1221 | 0 | 1.9 |