A magnitude ML 0.5 earthquake occured in region: 2 km E Chiusdino (SI), on
and geographic coordinates (lat, lon) 43.1530, 11.1100 at 6 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 |
---|---|---|---|---|
Chiusdino | SI | 2 | 1903 | 1903 |
Monticiano | SI | 6 | 1571 | 3474 |
Montieri | GR | 8 | 1204 | 4678 |
Radicondoli | SI | 13 | 914 | 5592 |
Roccastrada | GR | 16 | 9199 | 14791 |
Sovicille | SI | 17 | 10116 | 24907 |
Castelnuovo di Val di Cecina | PI | 18 | 2231 | 27138 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
ML 0.5 | 2020-12-01 18:45:21 |
43.1528 | 11.1105 | 6 | 2021-02-26 14:56:17 |
Bollettino Sismico Italiano INGV | 86656751 |
Reviewed Rev100 |
ML 1.6 | 2020-12-01 18:45:21 |
43.1478 | 11.1142 | 6 | 2020-12-01 18:53:50 |
Sala Sismica INGV-Roma | 85133921 |
Field | Value |
---|---|
Time (UTC) | 2020-12-01 18:45:21 ± 0.14 |
Latitude | 43.1528 ± 0.0072 |
Longitude | 11.1105 ± 0.0086 |
Depth (km) | 6 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | earthquake |
Origin ID | 86656751 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 770 |
Semi-minor axis of confidence ellipse (meter) | 630 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 119 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 770.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 163 |
Number of associated phases, regardless of their use for origin computation | 7 |
Number of defining phases | 7 |
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) | 0.06565 |
Epicentral distance of station farthest from the epicenter (degree) | 0.40380 |
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 | 0.5 |
Uncertainty | 0.0 |
Num. used stations | 1 |
Type of magnitude | ML |
Reference to an origin | 86656751 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2021-01-28 14:37:14 |
Field | Value |
---|---|
Value | 1.6 |
Uncertainty | 0.6 |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 85133921 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2020-12-01 18:53:50 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.CASP.HHZ. | 2020-12-01T18:45:30.11 | 0.3 | undecidable | manual | P | 206 | 44.8218 | 50 | -0.14 | 69 |
IV.RIBO.EHZ.01 | 2020-12-01T18:45:29.31 | 0.6 | undecidable | manual | S | 193 | 23.1546 | 104 | -0.25 | 47 |
IV.TRIF.CHE. | 2020-12-01T18:45:27.53 | 0.3 | undecidable | manual | S | 256 | 17.3715 | 109 | -0.09 | 73 |
IV.RIBO.EHZ.01 | 2020-12-01T18:45:26.34 | 0.3 | undecidable | manual | P | 193 | 23.1546 | 104 | 0.29 | 69 |
IV.TRIF.CHE. | 2020-12-01T18:45:25.03 | 0.1 | undecidable | manual | P | 256 | 17.3715 | 109 | 0.1 | 97 |
IV.FROS.CHZ. | 2020-12-01T18:45:24.42 | 0.3 | undecidable | manual | S | 30 | 7.2927 | 129 | -0.1 | 74 |
IV.FROS.CHZ. | 2020-12-01T18:45:23.18 | 0.1 | undecidable | manual | P | 30 | 7.2927 | 129 | 0.04 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.RIBO.EHE.01 | ML:0.5 | 0.000020383132000000002 | 0.2432 | AML | other | m | 2020-12-01T18:45:29.96 |