A magnitude Md 2.4 earthquake occured in region: 8 km SE Valtopina (PG), on
and geographic coordinates (lat, lon) 42.9980, 12.8030 at 4 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 |
---|---|---|---|---|
Valtopina | PG | 8 | 1398 | 1398 |
Foligno | PG | 9 | 57155 | 58553 |
Spello | PG | 11 | 8645 | 67198 |
Nocera Umbra | PG | 13 | 5839 | 73037 |
Trevi | PG | 14 | 8469 | 81506 |
Serravalle di Chienti | MC | 15 | 1070 | 82576 |
Sellano | PG | 16 | 1079 | 83655 |
Monte Cavallo | MC | 16 | 145 | 83800 |
Montefalco | PG | 17 | 5679 | 89479 |
Bevagna | PG | 17 | 5081 | 94560 |
Assisi | PG | 17 | 28299 | 122859 |
Cannara | PG | 18 | 4305 | 127164 |
Campello sul Clitunno | PG | 20 | 2442 | 129606 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
Md 2.4 | 1991-07-04 22:08:30 |
42.998 | 12.803 | 4 | 2013-07-15 08:40:51 |
Bollettino Sismico Italiano INGV | 144639 |
Field | Value |
---|---|
Time (UTC) | 1991-07-04 22:08:30 ± 0.114 |
Latitude | 42.9980 ± 0.0062 |
Longitude | 12.8030 ± 0.0080 |
Depth (km) | 4 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 144639 |
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) | 946.4 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 111 |
Number of associated phases, regardless of their use for origin computation | 10 |
Number of defining phases | 10 |
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) | 0.00113 |
Epicentral distance of station farthest from the epicenter (degree) | 0.00550 |
Number of stations at which the event was observed | 5 |
Number of stations from which data was used for origin computation | 5 |
Field | Value |
---|---|
Value | 2.4 |
Uncertainty | |
Num. used stations | 2 |
Type of magnitude | Md |
Reference to an origin | 144639 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 19:15:03 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.MNS.Z. | 1991-07-04T22:08:53.20 | 10.0 | undecidable | manual | SG | 188 | 0.6105 | -0.14 | 0.5 | |
--.ARV.Z. | 1991-07-04T22:08:49.66 | 10.0 | undecidable | manual | SG | 11 | 0.4995 | -0.02 | 0.6 | |
--.MNS.Z. | 1991-07-04T22:08:43.27 | 10.0 | undecidable | manual | PG | 188 | 0.6105 | -0.21 | 0.9 | |
--.RMF.Z. | 1991-07-04T22:08:42.56 | 10.0 | undecidable | manual | SG | 98 | 0.2997 | 0.65 | 0 | |
--.CIO.Z. | 1991-07-04T22:08:42.11 | 10.0 | undecidable | manual | SG | 51 | 0.3108 | -0.45 | 0.1 | |
--.ARV.Z. | 1991-07-04T22:08:41.66 | 10.0 | negative | manual | PG | 11 | 0.4995 | 0.18 | 2.3 | |
--.RMF.Z. | 1991-07-04T22:08:37.15 | 10.0 | undecidable | manual | PG | 98 | 0.2997 | 0.16 | 1.5 | |
--.CIO.Z. | 1991-07-04T22:08:37.11 | 10.0 | negative | manual | PG | 51 | 0.3108 | -0.26 | 2.1 | |
--.ASS.Z. | 1991-07-04T22:08:35.27 | 10.0 | undecidable | manual | SG | 300 | 0.1221 | -0.13 | 0.6 | |
--.ASS.Z. | 1991-07-04T22:08:33.40 | 10.0 | undecidable | manual | PG | 300 | 0.1221 | 0.17 | 1.4 |