A magnitude ML 1.1 earthquake occured in region: 6 km S Montieri (GR), on
and geographic coordinates (lat, lon) 43.0740, 11.0080 at 11 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 | 7 | 1204 | 1204 |
Massa Marittima | GR | 10 | 8375 | 9579 |
Chiusdino | SI | 11 | 1903 | 11482 |
Monterotondo Marittimo | GR | 15 | 1371 | 12853 |
Roccastrada | GR | 15 | 9199 | 22052 |
Monticiano | SI | 16 | 1571 | 23623 |
Castelnuovo di Val di Cecina | PI | 17 | 2231 | 25854 |
Gavorrano | GR | 18 | 8580 | 34434 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.1 | 2021-09-18 21:48:49 |
43.0735 | 11.0075 | 11 | 2021-09-18 22:01:18 |
Sala Sismica INGV-Roma | 95603251 |
Field | Value |
---|---|
Time (UTC) | 2021-09-18 21:48:49 ± 0.12 |
Latitude | 43.0735 ± 0.0063 |
Longitude | 11.0075 ± 0.0135 |
Depth (km) | 11 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 95603251 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1135 |
Semi-minor axis of confidence ellipse (meter) | 489 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 275 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1140.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 129 |
Number of associated phases, regardless of their use for origin computation | 10 |
Number of defining phases | 9 |
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) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.44966 |
Number of stations at which the event was observed | 6 |
Number of stations from which data was used for origin computation | 5 |
Field | Value |
---|---|
Value | 1.1 |
Uncertainty | 0.2 |
Num. used stations | 6 |
Type of magnitude | ML |
Reference to an origin | 95603251 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-09-18 22:01:18 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.CSNT.HHZ. | 2021-09-18T21:49:04.88 | 0.3 | undecidable | manual | S | 27 | 49.9167 | 50 | -0.35 | 67 |
IV.CELB.HHZ. | 2021-09-18T21:49:03.85 | 3.0 | negative | manual | P | 0.1 | 0 | |||
IV.CASP.HHZ. | 2021-09-18T21:49:00.60 | 0.1 | undecidable | manual | S | 200 | 33.4443 | 50 | -0.25 | 94 |
IV.CSNT.HHZ. | 2021-09-18T21:48:58.76 | 0.1 | undecidable | manual | P | 27 | 49.9167 | 50 | 0.23 | 91 |
IV.CASP.HHZ. | 2021-09-18T21:48:56.35 | 0.3 | undecidable | manual | P | 200 | 33.4443 | 50 | 0.36 | 69 |
IV.RIBO.EHZ.01 | 2021-09-18T21:48:55.26 | 0.1 | undecidable | manual | S | 167 | 14.1747 | 127 | -0.22 | 98 |
IV.TRIF.CHZ. | 2021-09-18T21:48:54.04 | 0.1 | undecidable | manual | S | 298 | 9.6792 | 138 | -0.27 | 97 |
IV.RIBO.EHZ.01 | 2021-09-18T21:48:53.13 | 0.1 | undecidable | manual | P | 167 | 14.1747 | 127 | 0.24 | 97 |
IV.FROS.CHZ. | 2021-09-18T21:48:53.70 | 0.1 | undecidable | manual | P | 38 | 19.3695 | 119 | -0.06 | 100 |
IV.TRIF.CHZ. | 2021-09-18T21:48:52.55 | 0.1 | undecidable | manual | P | 298 | 9.6792 | 138 | 0.33 | 96 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.TRIF.CHE. | ML:1.4 | 0.00029400000000000004 | 0.22 | AML | other | m | 2021-09-18T21:48:54.19 |
IV.TRIF.CHN. | ML:1.3 | 0.0002385 | 0.24 | AML | other | m | 2021-09-18T21:48:54.19 |
IV.FROS.CHN. | ML:1.0 | 0.00006939999999999999 | 0.12 | AML | other | m | 2021-09-18T21:48:54.51 |
IV.FROS.CHE. | ML:0.8 | 0.000051949999999999996 | 0.32 | AML | other | m | 2021-09-18T21:48:56.17 |
IV.CASP.HHE. | ML:1.2 | 0.00005765 | 0.34 | AML | other | m | 2021-09-18T21:49:00.80 |
IV.CASP.HHN. | ML:1.1 | 0.0000485 | 0.24 | AML | other | m | 2021-09-18T21:49:00.81 |