A magnitude Md 2.1 earthquake occured in region: 5 km SE Urbe (SV), on
and geographic coordinates (lat, lon) 44.4580, 8.6410 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 |
---|---|---|---|---|
Urbe | SV | 5 | 700 | 700 |
Arenzano | GE | 7 | 11519 | 12219 |
Cogoleto | GE | 8 | 9172 | 21391 |
Masone | GE | 8 | 3679 | 25070 |
Tiglieto | GE | 8 | 546 | 25616 |
Mele | GE | 9 | 2725 | 28341 |
Campo Ligure | GE | 10 | 2955 | 31296 |
Varazze | SV | 12 | 13251 | 44547 |
Rossiglione | GE | 12 | 2779 | 47326 |
Sassello | SV | 12 | 1777 | 49103 |
Stella | SV | 13 | 3009 | 52112 |
Celle Ligure | SV | 15 | 5237 | 57349 |
Pontinvrea | SV | 16 | 847 | 58196 |
Albisola Superiore | SV | 17 | 10163 | 68359 |
Cassinelle | AL | 18 | 914 | 69273 |
Albissola Marina | SV | 18 | 5487 | 74760 |
Molare | AL | 18 | 2181 | 76941 |
Mioglia | SV | 19 | 526 | 77467 |
Belforte Monferrato | AL | 19 | 515 | 77982 |
Morbello | AL | 19 | 402 | 78384 |
Giusvalla | SV | 20 | 441 | 78825 |
Ovada | AL | 20 | 11477 | 90302 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
Md 2.1 | 1987-09-02 23:44:19 |
44.458 | 8.641 | 10 | 2013-07-15 08:41:04 |
Bollettino Sismico Italiano INGV | 54669 |
Field | Value |
---|---|
Time (UTC) | 1987-09-02 23:44:19 ± 0.262 |
Latitude | 44.4580 ± 0.0377 |
Longitude | 8.6410 ± 0.0197 |
Depth (km) | 10 (operator assigned) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 54669 |
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) | 4468.9 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 157 |
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) | 0.3 |
Epicentral distance of station closest to the epicenter (degree) | 0.00186 |
Epicentral distance of station farthest from the epicenter (degree) | 0.01133 |
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 | 1 |
Type of magnitude | Md |
Reference to an origin | 54669 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 17:52:41 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.STV.Z. | 1987-09-02T23:44:50.90 | 10.0 | undecidable | manual | SG | 258 | 0.9546 | -1.34 | 0 | |
--.ORX.Z. | 1987-09-02T23:44:42.80 | 10.0 | undecidable | manual | PN | 338 | 1.2543 | -0.12 | 1.2 | |
--.STV.Z. | 1987-09-02T23:44:38.60 | 10.0 | undecidable | manual | PG | 258 | 0.9546 | 0.19 | 1.4 | |
--.CKI.Z. | 1987-09-02T23:44:30.00 | 10.0 | undecidable | manual | SG | 261 | 0.2553 | 0.16 | 0.7 | |
--.CKI.Z. | 1987-09-02T23:44:26.00 | 10.0 | undecidable | manual | PG | 261 | 0.2553 | 0.52 | 1 | |
--.GEN.Z. | 1987-09-02T23:44:24.50 | 10.0 | undecidable | manual | PG | 100 | 0.2109 | -0.13 | 1.8 |