A magnitude Md 2.5 earthquake occured in region: 1 km NW Siena (SI), on
and geographic coordinates (lat, lon) 43.3290, 11.3250 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 |
---|---|---|---|---|
Siena | SI | 1 | 53903 | 53903 |
Sovicille | SI | 9 | 10116 | 64019 |
Monteriggioni | SI | 11 | 9810 | 73829 |
Monteroni d'Arbia | SI | 13 | 9088 | 82917 |
Castelnuovo Berardenga | SI | 15 | 9097 | 92014 |
Castellina in Chianti | SI | 16 | 2859 | 94873 |
Gaiole in Chianti | SI | 18 | 2758 | 97631 |
Radda in Chianti | SI | 18 | 1613 | 99244 |
Murlo | SI | 19 | 2389 | 101633 |
Colle di Val d'Elsa | SI | 20 | 21620 | 123253 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
Md 2.5 | 1998-11-21 08:27:15 |
43.329 | 11.325 | 9 | 2013-07-15 08:40:51 |
Bollettino Sismico Italiano INGV | 355139 |
Field | Value |
---|---|
Time (UTC) | 1998-11-21 08:27:15 ± 0.416 |
Latitude | 43.3290 ± 0.0199 |
Longitude | 11.3250 ± 0.0124 |
Depth (km) | 9 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 355139 |
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) | 2429.3 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 247 |
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) | 0.2 |
Epicentral distance of station closest to the epicenter (degree) | 0.00130 |
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 | 2.5 |
Uncertainty | |
Num. used stations | 2 |
Type of magnitude | Md |
Reference to an origin | 355139 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 22:32:52 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.PII.Z. | 1998-11-21T08:27:40.00 | 10.0 | undecidable | manual | SG | 304 | 0.6882 | -0.3 | 0.5 | |
--.SFI.Z. | 1998-11-21T08:27:40.00 | 10.0 | undecidable | manual | SG | 33 | 0.6882 | 0.08 | 0.7 | |
--.CRE.Z. | 1998-11-21T08:27:35.00 | 10.0 | undecidable | manual | SG | 57 | 0.5328 | -0.13 | 0.7 | |
--.PII.Z. | 1998-11-21T08:27:30.00 | 10.0 | undecidable | manual | PG | 304 | 0.6882 | 0.08 | 1.7 | |
--.SFI.Z. | 1998-11-21T08:27:30.50 | 10.0 | undecidable | manual | PG | 33 | 0.6882 | 0.81 | 0.3 | |
--.CRE.Z. | 1998-11-21T08:27:26.50 | 10.0 | undecidable | manual | PG | 57 | 0.5328 | -0.43 | 0.9 | |
--.CSNT.Z. | 1998-11-21T08:27:22.00 | 10.0 | undecidable | manual | SG | 350 | 0.1443 | -0.14 | 1.1 | |
--.CSNT.Z. | 1998-11-21T08:27:19.50 | 10.0 | undecidable | manual | PG | 350 | 0.1443 | 0.07 | 2.1 |