A magnitude Md 2.2 earthquake occured in region: 4 km NE Chiusdino (SI), on
and geographic coordinates (lat, lon) 43.1770, 11.1290 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 |
---|---|---|---|---|
Chiusdino | SI | 4 | 1903 | 1903 |
Monticiano | SI | 6 | 1571 | 3474 |
Montieri | GR | 10 | 1204 | 4678 |
Radicondoli | SI | 12 | 914 | 5592 |
Sovicille | SI | 14 | 10116 | 15708 |
Castelnuovo di Val di Cecina | PI | 18 | 2231 | 17939 |
Roccastrada | GR | 19 | 9199 | 27138 |
Casole d'Elsa | SI | 20 | 3897 | 31035 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
Md 2.2
ML-VAX 2.5 |
1987-09-30 03:58:13 |
43.177 | 11.129 | 10 | 2013-07-15 08:41:04 |
Bollettino Sismico Italiano INGV | 56249 |
Field | Value |
---|---|
Time (UTC) | 1987-09-30 03:58:13 ± 0.375 |
Latitude | 43.1770 ± 0.0194 |
Longitude | 11.1290 ± 0.0739 |
Depth (km) | 10 (operator assigned) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 56249 |
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) | 6369.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 201 |
Number of associated phases, regardless of their use for origin computation | 5 |
Number of defining phases | 5 |
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) | 0.00623 |
Epicentral distance of station farthest from the epicenter (degree) | 0.00866 |
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 | 2.2 |
Uncertainty | |
Num. used stations | 2 |
Type of magnitude | Md |
Reference to an origin | 56249 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 17:54:02 |
Field | Value |
---|---|
Value | 2.5 |
Uncertainty | |
Num. used stations | 1 |
Type of magnitude | ML |
Reference to an origin | 56249 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2015-04-28 13:07:13 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.MAO.Z. | 1987-09-30T03:58:39.78 | 10.0 | undecidable | manual | SG | 178 | 0.7548 | -0.41 | 0.5 | |
--.PII.Z. | 1987-09-30T03:58:38.00 | 10.0 | undecidable | manual | SG | 320 | 0.6882 | -0.24 | 0.6 | |
--.BDI.Z. | 1987-09-30T03:58:32.50 | 10.0 | undecidable | manual | PG | 336 | 0.9657 | -0.38 | 1 | |
--.MAO.Z. | 1987-09-30T03:58:29.21 | 10.0 | undecidable | manual | PG | 178 | 0.7548 | 0.13 | 2 | |
--.PII.Z. | 1987-09-30T03:58:28.50 | 10.0 | undecidable | manual | PG | 320 | 0.6882 | 0.55 | 0.9 |