A magnitude Md 2.2 earthquake occured in region: 2 km S Arquata del Tronto (AP), on
and geographic coordinates (lat, lon) 42.7580, 13.2990 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 |
---|---|---|---|---|
Arquata del Tronto | AP | 2 | 1178 | 1178 |
Accumoli | RI | 8 | 667 | 1845 |
Acquasanta Terme | AP | 9 | 2916 | 4761 |
Montegallo | AP | 10 | 523 | 5284 |
Amatrice | RI | 14 | 2657 | 7941 |
Montemonaco | AP | 16 | 604 | 8545 |
Valle Castellana | TE | 17 | 977 | 9522 |
Norcia | PG | 17 | 4957 | 14479 |
Roccafluvione | AP | 19 | 2010 | 16489 |
Cittareale | RI | 19 | 482 | 16971 |
Castelsantangelo sul Nera | MC | 19 | 281 | 17252 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
Md 2.2 | 1987-04-22 20:30:36 |
42.758 | 13.299 | 10 | 2013-07-15 08:41:04 |
Bollettino Sismico Italiano INGV | 45419 |
Field | Value |
---|---|
Time (UTC) | 1987-04-22 20:30:36 ± 0.603 |
Latitude | 42.7580 ± 0.0273 |
Longitude | 13.2990 ± 0.0301 |
Depth (km) | 10 (operator assigned) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 45419 |
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) | 3902.1 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 287 |
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) | 0.4 |
Epicentral distance of station closest to the epicenter (degree) | 0.00405 |
Epicentral distance of station farthest from the epicenter (degree) | 0.00737 |
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 | 2.2 |
Uncertainty | |
Num. used stations | 2 |
Type of magnitude | Md |
Reference to an origin | 45419 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 17:44:44 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.AM8.Z. | 1987-04-22T20:31:05.59 | 10.0 | undecidable | manual | SG | 15 | 0.8214 | 0.92 | 0.2 | |
--.ARV.Z. | 1987-04-22T20:31:03.40 | 10.0 | undecidable | manual | SG | 340 | 0.777 | -0.11 | 0.8 | |
--.ASS.Z. | 1987-04-22T20:30:57.00 | 10.0 | undecidable | manual | SG | 302 | 0.555 | 0.62 | 0.4 | |
--.AM8.Z. | 1987-04-22T20:30:53.50 | 10.0 | undecidable | manual | PG | 15 | 0.8214 | 0.32 | 1.7 | |
--.CM8.Z. | 1987-04-22T20:30:52.52 | 10.0 | undecidable | manual | SG | 345 | 0.444 | -0.28 | 0.8 | |
--.ARV.Z. | 1987-04-22T20:30:51.50 | 10.0 | undecidable | manual | PG | 340 | 0.777 | -0.55 | 1.2 | |
--.ASS.Z. | 1987-04-22T20:30:48.30 | 10.0 | undecidable | manual | PG | 302 | 0.555 | 0.35 | 1.8 | |
--.CM8.Z. | 1987-04-22T20:30:45.26 | 10.0 | undecidable | manual | PG | 345 | 0.444 | -0.62 | 1.1 |