A magnitude Md 2.2 earthquake occured in region: 6 km E Arezzo (AR), on
and geographic coordinates (lat, lon) 43.4580, 11.9560 at 7 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 |
---|---|---|---|---|
Arezzo | AR | 6 | 99543 | 99543 |
Anghiari | AR | 12 | 5638 | 105181 |
Monterchi | AR | 13 | 1757 | 106938 |
Castiglion Fiorentino | AR | 13 | 13244 | 120182 |
Citerna | PG | 14 | 3531 | 123713 |
Capolona | AR | 14 | 5438 | 129151 |
Subbiano | AR | 15 | 6331 | 135482 |
Civitella in Val di Chiana | AR | 16 | 9121 | 144603 |
Monte Santa Maria Tiberina | PG | 17 | 1183 | 145786 |
Castiglion Fibocchi | AR | 17 | 2167 | 147953 |
Sansepolcro | AR | 20 | 15884 | 163837 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
Md 2.2 | 1987-07-12 02:40:56 |
43.458 | 11.956 | 7 | 2013-07-15 08:40:51 |
Bollettino Sismico Italiano INGV | 51799 |
Field | Value |
---|---|
Time (UTC) | 1987-07-12 02:40:56 ± 0.626 |
Latitude | 43.4580 ± 0.0301 |
Longitude | 11.9560 ± 0.0476 |
Depth (km) | 7 ± 3 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 51799 |
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) | 5095.3 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 210 |
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) | 0.00138 |
Epicentral distance of station farthest from the epicenter (degree) | 0.00639 |
Number of stations at which the event was observed | 5 |
Number of stations from which data was used for origin computation | 5 |
Field | Value |
---|---|
Value | 2.2 |
Uncertainty | |
Num. used stations | 3 |
Type of magnitude | Md |
Reference to an origin | 51799 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 17:50:09 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.ARV.Z. | 1987-07-12T02:41:21.42 | 10.0 | undecidable | manual | SG | 86 | 0.7104 | -0.71 | 0.4 | |
--.PGD.Z. | 1987-07-12T02:41:13.50 | 10.0 | undecidable | manual | SG | 337 | 0.444 | -0.02 | 0.8 | |
--.ARV.Z. | 1987-07-12T02:41:11.95 | 10.0 | undecidable | manual | PG | 86 | 0.7104 | 0.58 | 1.1 | |
--.ASS.Z. | 1987-07-12T02:41:10.00 | 10.0 | undecidable | manual | PG | 127 | 0.6327 | 0.02 | 1.8 | |
--.PGD.Z. | 1987-07-12T02:41:06.90 | 10.0 | undecidable | manual | PG | 337 | 0.444 | 0.5 | 1.5 | |
--.SS9.Z. | 1987-07-12T02:41:06.20 | 10.0 | undecidable | manual | PG | 350 | 0.4662 | -0.54 | 1.5 | |
--.CRE.Z. | 1987-07-12T02:41:04.57 | 10.0 | undecidable | manual | SG | 358 | 0.1554 | 1.18 | 0.1 | |
--.CRE.Z. | 1987-07-12T02:40:59.66 | 10.0 | undecidable | manual | PG | 358 | 0.1554 | -0.89 | 0.8 |