A magnitude Md 2.2 earthquake occured in region: 2 km W Velletri (RM), on
and geographic coordinates (lat, lon) 41.6930, 12.7610 at 9 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 |
---|---|---|---|---|
Velletri | RM | 2 | 53303 | 53303 |
Lanuvio | RM | 5 | 13632 | 66935 |
Nemi | RM | 5 | 1943 | 68878 |
Genzano di Roma | RM | 6 | 23970 | 92848 |
Lariano | RM | 7 | 13432 | 106280 |
Ariccia | RM | 8 | 19407 | 125687 |
Rocca di Papa | RM | 9 | 17034 | 142721 |
Albano Laziale | RM | 9 | 41715 | 184436 |
Castel Gandolfo | RM | 11 | 8997 | 193433 |
Rocca Priora | RM | 11 | 11962 | 205395 |
Marino | RM | 12 | 43026 | 248421 |
Cisterna di Latina | LT | 12 | 36868 | 285289 |
Monte Compatri | RM | 13 | 11978 | 297267 |
Grottaferrata | RM | 13 | 20327 | 317594 |
Rocca Massima | LT | 13 | 1136 | 318730 |
Cori | LT | 14 | 11065 | 329795 |
Artena | RM | 14 | 14276 | 344071 |
Monte Porzio Catone | RM | 14 | 8693 | 352764 |
Frascati | RM | 14 | 22087 | 374851 |
Aprilia | LT | 14 | 73446 | 448297 |
San Cesareo | RM | 15 | 15153 | 463450 |
Labico | RM | 15 | 6379 | 469829 |
Colonna | RM | 16 | 4287 | 474116 |
Valmontone | RM | 16 | 15959 | 490075 |
Zagarolo | RM | 17 | 17843 | 507918 |
Ciampino | RM | 18 | 38412 | 546330 |
Palestrina | RM | 20 | 21672 | 568002 |
Cave | RM | 20 | 11287 | 579289 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
Md 2.2 | 1987-05-11 15:12:11 |
41.693 | 12.761 | 9 | 2013-07-15 08:40:51 |
Bollettino Sismico Italiano INGV | 46829 |
Field | Value |
---|---|
Time (UTC) | 1987-05-11 15:12:11 ± 0.522 |
Latitude | 41.6930 ± 0.0249 |
Longitude | 12.7610 ± 0.0187 |
Depth (km) | 9 ± 2 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 46829 |
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) | 3176.9 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 293 |
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) | 0.3 |
Epicentral distance of station closest to the epicenter (degree) | 0.00065 |
Epicentral distance of station farthest from the epicenter (degree) | 0.00623 |
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 | 3 |
Type of magnitude | Md |
Reference to an origin | 46829 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 17:45:58 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.MNS.Z. | 1987-05-11T15:12:35.00 | 10.0 | undecidable | manual | SG | 355 | 0.6882 | -0.37 | 0.3 | |
--.MNS.Z. | 1987-05-11T15:12:25.50 | 10.0 | undecidable | manual | PG | 355 | 0.6882 | 0.42 | 0.7 | |
--.CP9.Z. | 1987-05-11T15:12:20.50 | 10.0 | undecidable | manual | SG | 40 | 0.2109 | 0.4 | 0.5 | |
--.RMP.Z. | 1987-05-11T15:12:16.50 | 10.0 | undecidable | manual | SG | 339 | 0.1221 | -0.32 | 0.7 | |
--.CP9.Z. | 1987-05-11T15:12:16.00 | 10.0 | undecidable | manual | PG | 40 | 0.2109 | -0.27 | 1.8 | |
--.RDP.Z. | 1987-05-11T15:12:16.00 | 10.0 | undecidable | manual | SG | 333 | 0.0666 | 0.73 | 0.1 | |
--.RMP.Z. | 1987-05-11T15:12:14.00 | 10.0 | undecidable | manual | PG | 339 | 0.1221 | -0.37 | 1.4 | |
--.RDP.Z. | 1987-05-11T15:12:13.50 | 10.0 | undecidable | manual | PG | 333 | 0.0666 | 0.03 | 2.4 |