A magnitude ML 1.6 earthquake occured in region: 4 km SE Radicofani (SI), on
and geographic coordinates (lat, lon) 42.8650, 11.7820 at 21 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 |
---|---|---|---|---|
Radicofani | SI | 4 | 1097 | 1097 |
Piancastagnaio | SI | 8 | 4230 | 5327 |
San Casciano dei Bagni | SI | 8 | 1632 | 6959 |
Abbadia San Salvatore | SI | 9 | 6444 | 13403 |
Castell'Azzara | GR | 12 | 1476 | 14879 |
Proceno | VT | 13 | 557 | 15436 |
Cetona | SI | 15 | 2755 | 18191 |
Acquapendente | VT | 15 | 5506 | 23697 |
Sarteano | SI | 16 | 4717 | 28414 |
Santa Fiora | GR | 16 | 2622 | 31036 |
Allerona | TR | 17 | 1794 | 32830 |
Fabro | TR | 19 | 2876 | 35706 |
Onano | VT | 19 | 995 | 36701 |
Seggiano | GR | 20 | 961 | 37662 |
Arcidosso | GR | 20 | 4285 | 41947 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
Md 1.9
ML 1.6 |
2009-04-23 07:45:27 |
42.865 | 11.782 | 21 | 2014-10-21 12:27:13 |
Bollettino Sismico Italiano INGV | 830059 |
Field | Value |
---|---|
Time (UTC) | 2009-04-23 07:45:27 ± 0.09 |
Latitude | 42.8650 ± 0.0090 |
Longitude | 11.7820 ± 0.0160 |
Depth (km) | 21 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-SISPICK |
Event type | earthquake |
Origin ID | 830059 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1802 |
Semi-minor axis of confidence ellipse (meter) | 253 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 126 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1640.1 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 263 |
Number of associated phases, regardless of their use for origin computation | 7 |
Number of defining phases | 5 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.05 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.25181 |
Number of stations at which the event was observed | 5 |
Number of stations from which data was used for origin computation | 3 |
Field | Value |
---|---|
Value | 1.6 |
Uncertainty | 0.3 |
Num. used stations | |
Type of magnitude | ML |
Reference to an origin | 830059 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-05 15:44:16 |
Field | Value |
---|---|
Value | 1.9 |
Uncertainty | 0.1 |
Num. used stations | |
Type of magnitude | Md |
Reference to an origin | 830059 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-05 15:44:16 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.MGAB.HHE. | 2009-04-23T07:45:37.95 | 0.6 | undecidable | manual | Sg | 79 | 27.3504 | 0.031 | 49 | |
IV.SACS.HHZ. | 2009-04-23T07:45:34.64 | 0.3 | undecidable | manual | Sg | 100 | 10.4784 | -0.019 | 75 | |
IV.MGAB.HHE. | 2009-04-23T07:45:33.45 | 0.1 | undecidable | manual | Pg | 79 | 27.3504 | -0.026 | 97 | |
IV.LATE.HHZ. | 2009-04-23T07:45:33.56 | 0.3 | undecidable | manual | Pg | 176 | 27.9498 | 0 | 73 | |
IV.SACS.HHZ. | 2009-04-23T07:45:31.62 | 0.1 | undecidable | manual | Pg | 100 | 10.4784 | 0.026 | 100 | |
IV.FIU.EHZ. | 2009-04-23T07:45:24.15 | 10.0 | undecidable | manual | Pg | 0 | 0 | 0 | ||
IV.FAVR.SHZ. | 2009-04-23T07:45:12.88 | 10.0 | undecidable | manual | Pg | 0 | 0 | 0 |