A magnitude Md 1.9 earthquake occured in region: 3 km W Velletri (RM), on
and geographic coordinates (lat, lon) 41.6980, 12.7440 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 | 3 | 53303 | 53303 |
Nemi | RM | 4 | 1943 | 55246 |
Lanuvio | RM | 4 | 13632 | 68878 |
Genzano di Roma | RM | 4 | 23970 | 92848 |
Ariccia | RM | 7 | 19407 | 112255 |
Rocca di Papa | RM | 8 | 17034 | 129289 |
Albano Laziale | RM | 8 | 41715 | 171004 |
Lariano | RM | 8 | 13432 | 184436 |
Castel Gandolfo | RM | 10 | 8997 | 193433 |
Marino | RM | 11 | 43026 | 236459 |
Rocca Priora | RM | 11 | 11962 | 248421 |
Grottaferrata | RM | 12 | 20327 | 268748 |
Monte Compatri | RM | 12 | 11978 | 280726 |
Frascati | RM | 13 | 22087 | 302813 |
Monte Porzio Catone | RM | 13 | 8693 | 311506 |
Cisterna di Latina | LT | 14 | 36868 | 348374 |
Aprilia | LT | 14 | 73446 | 421820 |
San Cesareo | RM | 15 | 15153 | 436973 |
Rocca Massima | LT | 15 | 1136 | 438109 |
Artena | RM | 15 | 14276 | 452385 |
Colonna | RM | 15 | 4287 | 456672 |
Labico | RM | 15 | 6379 | 463051 |
Cori | LT | 15 | 11065 | 474116 |
Ciampino | RM | 17 | 38412 | 512528 |
Valmontone | RM | 17 | 15959 | 528487 |
Zagarolo | RM | 17 | 17843 | 546330 |
Ardea | RM | 19 | 49183 | 595513 |
Palestrina | RM | 20 | 21672 | 617185 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
Md 1.9 | 1987-05-19 22:36:31 |
41.698 | 12.744 | 9 | 2013-07-15 08:40:51 |
Bollettino Sismico Italiano INGV | 47379 |
Field | Value |
---|---|
Time (UTC) | 1987-05-19 22:36:31 ± 0.346 |
Latitude | 41.6980 ± 0.0166 |
Longitude | 12.7440 ± 0.0550 |
Depth (km) | 9 ± 3 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 47379 |
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) | 4923.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 297 |
Number of associated phases, regardless of their use for origin computation | 6 |
Number of defining phases | 6 |
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) | 0.00057 |
Epicentral distance of station farthest from the epicenter (degree) | 0.00202 |
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 | 3 |
Type of magnitude | Md |
Reference to an origin | 47379 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 17:46:26 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.CP9.Z. | 1987-05-19T22:36:41.20 | 10.0 | undecidable | manual | SG | 43 | 0.222 | 0.19 | 0.5 | |
--.CP9.Z. | 1987-05-19T22:36:37.00 | 10.0 | undecidable | manual | PG | 43 | 0.222 | -0.1 | 1.4 | |
--.RMP.Z. | 1987-05-19T22:36:37.00 | 10.0 | undecidable | manual | SG | 344 | 0.1221 | -0.31 | 0.6 | |
--.RDP.Z. | 1987-05-19T22:36:36.00 | 10.0 | undecidable | manual | SG | 341 | 0.0666 | 0.18 | 0.6 | |
--.RMP.Z. | 1987-05-19T22:36:35.30 | 10.0 | undecidable | manual | PG | 344 | 0.1221 | 0.33 | 1 | |
--.RDP.Z. | 1987-05-19T22:36:34.00 | 10.0 | undecidable | manual | PG | 341 | 0.0666 | -0.1 | 1.9 |