A magnitude Md 2.1 earthquake occured in region: 7 km E Aprilia (LT), on
and geographic coordinates (lat, lon) 41.5930, 12.7370 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 |
---|---|---|---|---|
Aprilia | LT | 7 | 73446 | 73446 |
Cisterna di Latina | LT | 8 | 36868 | 110314 |
Lanuvio | RM | 10 | 13632 | 123946 |
Velletri | RM | 11 | 53303 | 177249 |
Genzano di Roma | RM | 13 | 23970 | 201219 |
Nemi | RM | 14 | 1943 | 203162 |
Ariccia | RM | 15 | 19407 | 222569 |
Cori | LT | 16 | 11065 | 233634 |
Ardea | RM | 16 | 49183 | 282817 |
Nettuno | RM | 16 | 49167 | 331984 |
Albano Laziale | RM | 17 | 41715 | 373699 |
Lariano | RM | 17 | 13432 | 387131 |
Rocca Massima | LT | 18 | 1136 | 388267 |
Anzio | RM | 18 | 54211 | 442478 |
Castel Gandolfo | RM | 19 | 8997 | 451475 |
Rocca di Papa | RM | 19 | 17034 | 468509 |
Latina | LT | 20 | 125985 | 594494 |
Norma | LT | 20 | 3946 | 598440 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
Md 2.1 | 1987-05-04 20:36:05 |
41.593 | 12.737 | 10 | 2013-07-15 08:41:04 |
Bollettino Sismico Italiano INGV | 46359 |
Field | Value |
---|---|
Time (UTC) | 1987-05-04 20:36:05 ± 0.701 |
Latitude | 41.5930 ± 0.0302 |
Longitude | 12.7370 ± 0.0444 |
Depth (km) | 10 (operator assigned) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 46359 |
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) | 4994.9 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 271 |
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) | 0.5 |
Epicentral distance of station closest to the epicenter (degree) | 0.00146 |
Epicentral distance of station farthest from the epicenter (degree) | 0.00729 |
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 | 2.1 |
Uncertainty | |
Num. used stations | 2 |
Type of magnitude | Md |
Reference to an origin | 46359 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 17:45:33 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.SDI.Z. | 1987-05-04T20:36:34.00 | 10.0 | undecidable | manual | SG | 81 | 0.8103 | 0.72 | 0.3 | |
--.MNS.Z. | 1987-05-04T20:36:33.00 | 10.0 | undecidable | manual | SG | 356 | 0.7881 | 0.29 | 0.6 | |
--.SDI.Z. | 1987-05-04T20:36:21.00 | 10.0 | undecidable | manual | PG | 81 | 0.8103 | -0.48 | 1.2 | |
--.MNS.Z. | 1987-05-04T20:36:20.50 | 10.0 | undecidable | manual | PG | 356 | 0.7881 | -0.65 | 0.9 | |
--.RMP.Z. | 1987-05-04T20:36:13.80 | 10.0 | undecidable | manual | SG | 353 | 0.2109 | -0.53 | 0.9 | |
--.RDP.Z. | 1987-05-04T20:36:12.50 | 10.0 | undecidable | manual | SG | 354 | 0.1665 | -0.1 | 1.4 | |
--.RMP.Z. | 1987-05-04T20:36:11.00 | 10.0 | undecidable | manual | PG | 353 | 0.2109 | 0.46 | 1.6 | |
--.RDP.Z. | 1987-05-04T20:36:10.20 | 10.0 | undecidable | manual | PG | 354 | 0.1665 | 0.66 | 1.1 |