A magnitude ML 1.2 earthquake occured in region: Montieri (GR), on
and geographic coordinates (lat, lon) 43.1330, 11.0130 at 9 km depth.
The earthquake was located by: Sala Sismica INGV-Roma.
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 | 0 | 1204 | 1204 |
Chiusdino | SI | 7 | 1903 | 3107 |
Castelnuovo di Val di Cecina | PI | 12 | 2231 | 5338 |
Monterotondo Marittimo | GR | 13 | 1371 | 6709 |
Monticiano | SI | 14 | 1571 | 8280 |
Massa Marittima | GR | 14 | 8375 | 16655 |
Radicondoli | SI | 15 | 914 | 17569 |
Roccastrada | GR | 19 | 9199 | 26768 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.2 | 2021-12-20 17:01:31 |
43.1333 | 11.0128 | 9 | 2021-12-20 17:06:03 |
Sala Sismica INGV-Roma | 98760201 |
Field | Value |
---|---|
Time (UTC) | 2021-12-20 17:01:31 ± 0.22 |
Latitude | 43.1333 ± 0.0117 |
Longitude | 11.0128 ± 0.0148 |
Depth (km) | 9 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 98760201 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1375 |
Semi-minor axis of confidence ellipse (meter) | 862 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 324 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1380.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 157 |
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) | 0.39 |
Epicentral distance of station closest to the epicenter (degree) | 0.08274 |
Epicentral distance of station farthest from the epicenter (degree) | 0.35883 |
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 | 1.2 |
Uncertainty | 0.2 |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 98760201 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-12-20 17:06:03 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.CASP.HHZ. | 2021-12-20T17:01:44.46 | 0.3 | undecidable | manual | S | 198 | 39.8268 | 50 | -0.6 | 64 |
IV.RIBO.EHZ.01 | 2021-12-20T17:01:39.23 | 0.3 | undecidable | manual | S | 172 | 20.6682 | 113 | -0.07 | 75 |
IV.CASP.HHZ. | 2021-12-20T17:01:39.68 | 0.1 | undecidable | manual | P | 198 | 39.8268 | 50 | 0.35 | 91 |
IV.FROS.CHZ. | 2021-12-20T17:01:37.01 | 0.3 | undecidable | manual | S | 54 | 14.3745 | 122 | -0.35 | 72 |
IV.RIBO.EHZ.01 | 2021-12-20T17:01:36.23 | 0.1 | undecidable | manual | P | 172 | 20.6682 | 113 | 0.23 | 97 |
IV.FROS.CHZ. | 2021-12-20T17:01:35.01 | 0.1 | positive | manual | P | 54 | 14.3745 | 122 | 0.13 | 100 |
IV.TRIF.CHZ. | 2021-12-20T17:01:35.61 | 0.3 | undecidable | manual | S | 257 | 9.1797 | 134 | -0.32 | 73 |
IV.TRIF.CHZ. | 2021-12-20T17:01:34.30 | 0.1 | negative | manual | P | 257 | 9.1797 | 134 | 0.25 | 98 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.TRIF.CHE. | ML:1.3 | 0.0003035 | 1.88 | AML | other | m | 2021-12-20T17:01:36.04 |
IV.TRIF.CHN. | ML:1.3 | 0.000266 | 0.08 | AML | other | m | 2021-12-20T17:01:36.02 |
IV.FROS.CHN. | ML:1.1 | 0.000131 | 0.16 | AML | other | m | 2021-12-20T17:01:37.27 |
IV.FROS.CHE. | ML:0.9 | 0.0000918 | 0.52 | AML | other | m | 2021-12-20T17:01:37.83 |