A magnitude ML 1.0 earthquake occured in region: 4 km NW Montieri (GR), on
and geographic coordinates (lat, lon) 43.1580, 10.9800 at 10 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 | 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 | 16 | 1571 | 17569 |
Pomarance | PI | 18 | 5897 | 23466 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.0 | 2021-10-27 21:46:46 |
43.1582 | 10.9798 | 10 | 2021-10-27 21:56:29 |
Sala Sismica INGV-Roma | 97028731 |
Field | Value |
---|---|
Time (UTC) | 2021-10-27 21:46:46 ± 0.13 |
Latitude | 43.1582 ± 0.0099 |
Longitude | 10.9798 ± 0.0136 |
Depth (km) | 10 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 97028731 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1353 |
Semi-minor axis of confidence ellipse (meter) | 629 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 134 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1350.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 99 |
Number of associated phases, regardless of their use for origin computation | 9 |
Number of defining phases | 9 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.32 |
Epicentral distance of station closest to the epicenter (degree) | 0.07105 |
Epicentral distance of station farthest from the epicenter (degree) | 0.41369 |
Number of stations at which the event was observed | 6 |
Number of stations from which data was used for origin computation | 6 |
Field | Value |
---|---|
Value | 1.0 |
Uncertainty | 0.0 |
Num. used stations | 2 |
Type of magnitude | ML |
Reference to an origin | 97028731 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-10-27 21:56:29 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.CASP.HNZ. | 2021-10-27T21:47:00.23 | 0.6 | undecidable | manual | S | 193 | 41.8248 | 50 | -0.54 | 43 |
IV.CASP.HNZ. | 2021-10-27T21:46:55.12 | 0.1 | undecidable | manual | P | 193 | 41.8248 | 50 | 0.23 | 93 |
IV.OSSC.HHZ. | 2021-10-27T21:46:55.39 | 0.1 | undecidable | manual | P | 28 | 45.9207 | 50 | -0.12 | 94 |
IV.RIBO.EHZ.01 | 2021-10-27T21:46:52.24 | 0.6 | undecidable | manual | P | 167 | 23.8539 | 112 | 0.24 | 48 |
IV.FROS.CHZ. | 2021-10-27T21:46:52.65 | 0.6 | undecidable | manual | S | 68 | 15.3735 | 122 | -0.51 | 46 |
IV.MAGO.CHN. | 2021-10-27T21:46:52.93 | 0.1 | undecidable | manual | P | 296 | 28.9488 | 50 | 0.02 | 99 |
IV.TRIF.CHZ. | 2021-10-27T21:46:50.76 | 0.6 | undecidable | manual | S | 232 | 7.881 | 141 | -0.43 | 47 |
IV.FROS.CHZ. | 2021-10-27T21:46:50.78 | 0.1 | undecidable | manual | P | 68 | 15.3735 | 122 | 0.29 | 96 |
IV.TRIF.CHZ. | 2021-10-27T21:46:49.51 | 0.1 | negative | manual | P | 232 | 7.881 | 141 | 0.15 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.TRIF.CHN. | ML:1.0 | 0.0001515 | 0.2 | AML | other | m | 2021-10-27T21:46:50.76 |
IV.TRIF.CHE. | ML:1.0 | 0.000167 | 0.46 | AML | other | m | 2021-10-27T21:46:51.76 |