A magnitude ML 1.0 earthquake occured in region: 3 km NE Montieri (GR), on
and geographic coordinates (lat, lon) 43.1610, 11.0320 at 9 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 |
Chiusdino | SI | 5 | 1903 | 3107 |
Radicondoli | SI | 11 | 914 | 4021 |
Castelnuovo di Val di Cecina | PI | 11 | 2231 | 6252 |
Monticiano | SI | 12 | 1571 | 7823 |
Monterotondo Marittimo | GR | 14 | 1371 | 9194 |
Massa Marittima | GR | 17 | 8375 | 17569 |
Roccastrada | GR | 20 | 9199 | 26768 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
ML 1.0 | 2021-09-18 21:52:10 |
43.1608 | 11.0323 | 9 | 2022-03-30 13:04:40 |
Bollettino Sismico Italiano INGV | 101588791 |
Reviewed Rev100 |
ML 0.9 | 2021-09-18 21:52:11 |
43.1563 | 11.0352 | 1 | 2021-09-18 22:02:42 |
Sala Sismica INGV-Roma | 95603271 |
Field | Value |
---|---|
Time (UTC) | 2021-09-18 21:52:10 ± 0.22 |
Latitude | 43.1608 ± 0.0108 |
Longitude | 11.0323 ± 0.0136 |
Depth (km) | 9 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | earthquake |
Origin ID | 101588791 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1372 |
Semi-minor axis of confidence ellipse (meter) | 689 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 327 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1370.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 177 |
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) | 0.33 |
Epicentral distance of station closest to the epicenter (degree) | 0.10252 |
Epicentral distance of station farthest from the epicenter (degree) | 0.38941 |
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 | 0.9 |
Uncertainty | 0.1 |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 95603271 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-09-18 22:02:42 |
Field | Value |
---|---|
Value | 1.0 |
Uncertainty | 0.1 |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 101588791 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2022-03-01 17:06:03 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.CASP.HHZ. | 2021-09-18T21:52:24.48 | 0.3 | undecidable | manual | S | 198 | 43.2234 | 50 | -0.47 | 66 |
IV.RIBO.EHZ.01 | 2021-09-18T21:52:19.11 | 0.3 | undecidable | manual | S | 177 | 23.5542 | 110 | -0.04 | 75 |
IV.CASP.HHZ. | 2021-09-18T21:52:19.19 | 0.3 | undecidable | manual | P | 198 | 43.2234 | 50 | 0.37 | 67 |
IV.RIBO.EHZ.01 | 2021-09-18T21:52:15.79 | 0.3 | undecidable | manual | P | 177 | 23.5542 | 110 | 0.32 | 70 |
IV.FROS.CHZ. | 2021-09-18T21:52:15.13 | 0.3 | undecidable | manual | S | 61 | 11.3775 | 128 | -0.29 | 72 |
IV.TRIF.CHZ. | 2021-09-18T21:52:15.27 | 0.3 | undecidable | manual | S | 244 | 11.6772 | 127 | -0.23 | 73 |
IV.FROS.CHZ. | 2021-09-18T21:52:13.42 | 0.1 | undecidable | manual | P | 61 | 11.3775 | 128 | 0.11 | 100 |
IV.TRIF.CHZ. | 2021-09-18T21:52:13.51 | 0.1 | undecidable | manual | P | 244 | 11.6772 | 127 | 0.15 | 99 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.FROS.CHE. | ML:1.2 | 0.0001855 | 0.64 | AML | other | m | 2021-09-18T21:52:15.20 |
IV.FROS.CHN. | ML:1.0 | 0.0001205 | 0.72 | AML | other | m | 2021-09-18T21:52:15.66 |
IV.TRIF.CHN. | ML:0.9 | 0.00010195 | 1.28 | AML | other | m | 2021-09-18T21:52:16.00 |
IV.TRIF.CHE. | ML:0.9 | 0.00010095 | 1.52 | AML | other | m | 2021-09-18T21:52:16.95 |