A magnitude Md 2.2 earthquake occured in region: 8 km E Volterra (PI), on
and geographic coordinates (lat, lon) 43.4290, 10.9510 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 |
---|---|---|---|---|
Volterra | PI | 8 | 10519 | 10519 |
San Gimignano | SI | 9 | 7820 | 18339 |
Casole d'Elsa | SI | 12 | 3897 | 22236 |
Gambassi Terme | FI | 12 | 4870 | 27106 |
Colle di Val d'Elsa | SI | 14 | 21620 | 48726 |
Montaione | FI | 14 | 3700 | 52426 |
Certaldo | FI | 15 | 16121 | 68547 |
Pomarance | PI | 16 | 5897 | 74444 |
Poggibonsi | SI | 16 | 29196 | 103640 |
Montecatini Val di Cecina | PI | 17 | 1749 | 105389 |
Lajatico | PI | 19 | 1336 | 106725 |
Castelfiorentino | FI | 20 | 17504 | 124229 |
Radicondoli | SI | 20 | 914 | 125143 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
Md 2.2 | 1993-03-21 00:20:40 |
43.429 | 10.951 | 10 | 2013-07-15 08:41:04 |
Bollettino Sismico Italiano INGV | 182019 |
Field | Value |
---|---|
Time (UTC) | 1993-03-21 00:20:40 ± 0.473 |
Latitude | 43.4290 ± 0.0315 |
Longitude | 10.9510 ± 0.0216 |
Depth (km) | 10 (operator assigned) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 182019 |
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) | 3909.1 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 238 |
Number of associated phases, regardless of their use for origin computation | 7 |
Number of defining phases | 7 |
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) | 0.00380 |
Epicentral distance of station farthest from the epicenter (degree) | 0.00672 |
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 | 2.2 |
Uncertainty | |
Num. used stations | 2 |
Type of magnitude | Md |
Reference to an origin | 182019 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 19:50:49 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.CRE.Z. | 1993-03-21T00:21:06.00 | 10.0 | undecidable | manual | SG | 74 | 0.7437 | -0.8 | 0 | |
--.BDI.Z. | 1993-03-21T00:21:04.73 | 10.0 | undecidable | manual | SG | 337 | 0.6771 | 0.08 | 0.6 | |
--.PII.Z. | 1993-03-21T00:20:56.45 | 10.0 | undecidable | manual | SG | 313 | 0.4218 | 0.07 | 0.6 | |
--.CRE.Z. | 1993-03-21T00:20:56.20 | 10.0 | negative | manual | PG | 74 | 0.7437 | 0.19 | 2.4 | |
--.PGD.Z. | 1993-03-21T00:20:55.20 | 10.0 | undecidable | manual | PG | 50 | 0.7104 | 0.03 | 1.5 | |
--.BDI.Z. | 1993-03-21T00:20:54.81 | 10.0 | undecidable | manual | PG | 337 | 0.6771 | 0.23 | 1.2 | |
--.PII.Z. | 1993-03-21T00:20:49.42 | 10.0 | undecidable | manual | PG | 313 | 0.4218 | -0.39 | 0.7 |