A magnitude Md 2.5 earthquake occured in region: 5 km SW Frontone (PU), on
and geographic coordinates (lat, lon) 43.4800, 12.7100 at 29 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 |
---|---|---|---|---|
Frontone | PU | 5 | 1300 | 1300 |
Serra Sant'Abbondio | PU | 5 | 1027 | 2327 |
Cantiano | PU | 7 | 2245 | 4572 |
Scheggia e Pascelupo | PG | 9 | 1393 | 5965 |
Cagli | PU | 9 | 8731 | 14696 |
Sassoferrato | AN | 13 | 7285 | 21981 |
Costacciaro | PG | 13 | 1216 | 23197 |
Pergola | PU | 14 | 6333 | 29530 |
Acqualagna | PU | 16 | 4393 | 33923 |
Sigillo | PG | 17 | 2404 | 36327 |
Gubbio | PG | 18 | 32216 | 68543 |
Arcevia | AN | 19 | 4612 | 73155 |
Genga | AN | 19 | 1797 | 74952 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
Md 2.5
ML-VAX 1.9 |
1987-10-21 14:31:25 |
43.48 | 12.71 | 29 | 2013-07-15 08:40:51 |
Bollettino Sismico Italiano INGV | 57369 |
Field | Value |
---|---|
Time (UTC) | 1987-10-21 14:31:25 ± 0.244 |
Latitude | 43.4800 ± 0.0228 |
Longitude | 12.7100 ± 0.0307 |
Depth (km) | 29 ± 2 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 57369 |
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) | 3545.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 137 |
Number of associated phases, regardless of their use for origin computation | 13 |
Number of defining phases | 13 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.4 |
Epicentral distance of station closest to the epicenter (degree) | 0.00154 |
Epicentral distance of station farthest from the epicenter (degree) | 0.00842 |
Number of stations at which the event was observed | 8 |
Number of stations from which data was used for origin computation | 8 |
Field | Value |
---|---|
Value | 2.5 |
Uncertainty | |
Num. used stations | 4 |
Type of magnitude | Md |
Reference to an origin | 57369 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 17:55:01 |
Field | Value |
---|---|
Value | 1.9 |
Uncertainty | |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 57369 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2015-04-28 13:07:13 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.PGD.Z. | 1987-10-21T14:31:53.14 | 10.0 | undecidable | manual | SN | 299 | 0.8103 | 1.11 | 0.1 | |
--.SS9.Z. | 1987-10-21T14:31:51.86 | 10.0 | undecidable | manual | SN | 305 | 0.7548 | 1.16 | 0.1 | |
--.AM8.Z. | 1987-10-21T14:31:49.45 | 10.0 | undecidable | manual | SN | 83 | 0.6438 | 1.38 | 0 | |
--.CRE.Z. | 1987-10-21T14:31:45.30 | 10.0 | undecidable | manual | SN | 284 | 0.5661 | -0.81 | 0.3 | |
--.ALP.Z. | 1987-10-21T14:31:43.00 | 10.0 | undecidable | manual | PN | 138 | 0.9324 | 0.38 | 0.9 | |
--.ASS.Z. | 1987-10-21T14:31:42.30 | 10.0 | undecidable | manual | SG | 185 | 0.4107 | -0.28 | 0.5 | |
--.PGD.Z. | 1987-10-21T14:31:40.50 | 10.0 | undecidable | manual | PN | 299 | 0.8103 | -0.45 | 0.9 | |
--.SS9.Z. | 1987-10-21T14:31:39.70 | 10.0 | undecidable | manual | PN | 305 | 0.7548 | -0.48 | 0.9 | |
--.CRE.Z. | 1987-10-21T14:31:37.00 | 10.0 | undecidable | manual | PN | 284 | 0.5661 | -0.52 | 1 | |
--.AM8.Z. | 1987-10-21T14:31:37.55 | 10.0 | undecidable | manual | PN | 83 | 0.6438 | -1.11 | 0.2 | |
--.ASS.Z. | 1987-10-21T14:31:35.46 | 10.0 | positive | manual | PG | 185 | 0.4107 | -0.03 | 2.8 | |
--.CM8.Z. | 1987-10-21T14:31:35.21 | 10.0 | positive | manual | PN | 132 | 0.4218 | -0.37 | 2.3 | |
--.ARV.Z. | 1987-10-21T14:31:31.95 | 10.0 | positive | manual | PG | 83 | 0.1665 | 0.01 | 2.9 |