A magnitude Md 2.5 earthquake occured in region: 4 km NW Montieri (GR), on
and geographic coordinates (lat, lon) 43.1560, 10.9770 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 |
---|---|---|---|---|
Montieri | GR | 4 | 1204 | 1204 |
Castelnuovo di Val di Cecina | PI | 8 | 2231 | 3435 |
Chiusdino | SI | 9 | 1903 | 5338 |
Monterotondo Marittimo | GR | 10 | 1371 | 6709 |
Radicondoli | SI | 13 | 914 | 7623 |
Massa Marittima | GR | 14 | 8375 | 15998 |
Monticiano | SI | 17 | 1571 | 17569 |
Pomarance | PI | 18 | 5897 | 23466 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
Md 2.5
ML-VAX 2.1 |
1991-08-27 03:20:00 |
43.156 | 10.977 | 10 | 2013-07-15 08:40:51 |
Bollettino Sismico Italiano INGV | 148189 |
Field | Value |
---|---|
Time (UTC) | 1991-08-27 03:20:00 ± 0.71 |
Latitude | 43.1560 ± 0.0105 |
Longitude | 10.9770 ± 0.0245 |
Depth (km) | 10 ± 6 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 148189 |
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) | 2305.3 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 159 |
Number of associated phases, regardless of their use for origin computation | 14 |
Number of defining phases | 14 |
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) | 0.00583 |
Epicentral distance of station farthest from the epicenter (degree) | 0.00947 |
Number of stations at which the event was observed | 7 |
Number of stations from which data was used for origin computation | 7 |
Field | Value |
---|---|
Value | 2.5 |
Uncertainty | |
Num. used stations | 5 |
Type of magnitude | Md |
Reference to an origin | 148189 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 19:18:18 |
Field | Value |
---|---|
Value | 2.1 |
Uncertainty | |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 148189 |
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 |
---|---|---|---|---|---|---|---|---|---|---|
--.MME.Z. | 1991-08-27T03:20:36.71 | 10.0 | undecidable | manual | SN | 348 | 1.0545 | 0.93 | 0.1 | |
--.SFI.Z. | 1991-08-27T03:20:32.68 | 10.0 | undecidable | manual | SG | 39 | 0.9657 | -0.82 | 0.1 | |
--.PGD.Z. | 1991-08-27T03:20:31.28 | 10.0 | undecidable | manual | SG | 36 | 0.888 | 0.34 | 0.5 | |
--.BDI.Z. | 1991-08-27T03:20:31.16 | 10.0 | undecidable | manual | SG | 342 | 0.9435 | -1.31 | 0 | |
--.CRE.Z. | 1991-08-27T03:20:28.93 | 10.0 | undecidable | manual | SG | 56 | 0.8436 | -0.31 | 0.5 | |
--.MAO.Z. | 1991-08-27T03:20:25.84 | 10.0 | undecidable | manual | SG | 169 | 0.7437 | -0.32 | 0.5 | |
--.PII.Z. | 1991-08-27T03:20:22.10 | 10.0 | undecidable | manual | SG | 329 | 0.6438 | -1.05 | 0 | |
--.MME.Z. | 1991-08-27T03:20:21.21 | 10.0 | undecidable | manual | PN | 348 | 1.0545 | 0.49 | 0.8 | |
--.SFI.Z. | 1991-08-27T03:20:19.34 | 10.0 | undecidable | manual | PG | 39 | 0.9657 | -0.07 | 1.5 | |
--.PGD.Z. | 1991-08-27T03:20:18.30 | 10.0 | undecidable | manual | PG | 36 | 0.888 | 0.1 | 1.5 | |
--.BDI.Z. | 1991-08-27T03:20:18.95 | 10.0 | undecidable | manual | PG | 342 | 0.9435 | 0.13 | 1.4 | |
--.CRE.Z. | 1991-08-27T03:20:17.90 | 10.0 | positive | manual | PG | 56 | 0.8436 | 0.14 | 3 | |
--.MAO.Z. | 1991-08-27T03:20:15.50 | 10.0 | positive | manual | PG | 169 | 0.7437 | -0.12 | 3 | |
--.PII.Z. | 1991-08-27T03:20:13.75 | 10.0 | undecidable | manual | PG | 329 | 0.6438 | 0.37 | 1.1 |