A magnitude ML 0.5 earthquake occured in region: 2 km W Piancastagnaio (SI), on
and geographic coordinates (lat, lon) 42.8560, 11.6720 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 |
---|---|---|---|---|
Piancastagnaio | SI | 2 | 4230 | 4230 |
Abbadia San Salvatore | SI | 3 | 6444 | 10674 |
Santa Fiora | GR | 7 | 2622 | 13296 |
Radicofani | SI | 9 | 1097 | 14393 |
Castell'Azzara | GR | 9 | 1476 | 15869 |
Arcidosso | GR | 11 | 4285 | 20154 |
Castel del Piano | GR | 12 | 4690 | 24844 |
Seggiano | GR | 12 | 961 | 25805 |
Roccalbegna | GR | 15 | 1044 | 26849 |
San Casciano dei Bagni | SI | 17 | 1632 | 28481 |
Proceno | VT | 17 | 557 | 29038 |
Castiglione d'Orcia | SI | 17 | 2346 | 31384 |
Semproniano | GR | 17 | 1059 | 32443 |
Sorano | GR | 20 | 3428 | 35871 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 0.5 | 2020-12-15 19:48:56 |
42.8557 | 11.6715 | 9 | 2020-12-15 20:29:51 |
Sala Sismica INGV-Roma | 85452121 |
Field | Value |
---|---|
Time (UTC) | 2020-12-15 19:48:56 ± 0.14 |
Latitude | 42.8557 ± 0.0126 |
Longitude | 11.6715 ± 0.0110 |
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 | 85452121 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1406 |
Semi-minor axis of confidence ellipse (meter) | 841 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 194 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1410.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 77 |
Number of associated phases, regardless of their use for origin computation | 15 |
Number of defining phases | 15 |
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) | 0.02158 |
Epicentral distance of station farthest from the epicenter (degree) | 0.51981 |
Number of stations at which the event was observed | 9 |
Number of stations from which data was used for origin computation | 9 |
Field | Value |
---|---|
Value | 0.5 |
Uncertainty | 0.3 |
Num. used stations | 8 |
Type of magnitude | ML |
Reference to an origin | 85452121 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2020-12-15 20:29:51 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.MGAB.HHZ. | 2020-12-15T19:49:07.71 | 0.6 | undecidable | manual | S | 80 | 36.3414 | 50 | -1 | 35 |
IV.CAFI.HHE. | 2020-12-15T19:49:06.68 | 0.6 | undecidable | manual | P | 24 | 57.6978 | 50 | 0.03 | 45 |
IV.FROS.CHE. | 2020-12-15T19:49:06.69 | 0.6 | undecidable | manual | P | 313 | 57.2982 | 50 | 0.09 | 45 |
IV.MGAB.HHZ. | 2020-12-15T19:49:03.02 | 0.6 | undecidable | manual | P | 80 | 36.3414 | 50 | -0.34 | 44 |
IV.ARCI.HHZ. | 2020-12-15T19:49:01.95 | 0.3 | undecidable | manual | S | 269 | 15.9729 | 119 | -0.43 | 68 |
TV.SF14.HHZ. | 2020-12-15T19:49:01.09 | 0.3 | undecidable | manual | S | 203 | 12.0768 | 126 | -0.16 | 72 |
IV.ARCI.HHZ. | 2020-12-15T19:49:00.03 | 0.1 | undecidable | manual | P | 269 | 15.9729 | 119 | 0.32 | 92 |
IV.SACS.HHZ. | 2020-12-15T19:49:00.80 | 0.1 | undecidable | manual | P | 92 | 19.3695 | 115 | 0.47 | 89 |
IV.MCIV.CHZ. | 2020-12-15T19:49:00.17 | 0.3 | undecidable | manual | S | 177 | 8.5803 | 136 | -0.16 | 73 |
TV.SF03.EHZ. | 2020-12-15T19:48:59.57 | 0.3 | undecidable | manual | S | 169 | 5.994 | 146 | -0.19 | 72 |
TV.SF14.HHZ. | 2020-12-15T19:48:59.34 | 0.1 | undecidable | manual | P | 203 | 12.0768 | 126 | 0.29 | 94 |
IV.MCIV.CHZ. | 2020-12-15T19:48:58.80 | 0.1 | undecidable | manual | P | 177 | 8.5803 | 136 | 0.27 | 94 |
TV.SF04.EHZ. | 2020-12-15T19:48:58.73 | 0.3 | undecidable | manual | S | 202 | 2.3976 | 165 | -0.51 | 68 |
TV.SF03.EHZ. | 2020-12-15T19:48:58.37 | 0.1 | undecidable | manual | P | 169 | 5.994 | 146 | 0.17 | 97 |
TV.SF04.EHZ. | 2020-12-15T19:48:57.94 | 0.1 | undecidable | manual | P | 202 | 2.3976 | 165 | 0.04 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.MCIV.CHN. | ML:1.2 | 0.00021600785 | 0.192 | AML | other | m | 2020-12-15T19:49:00.67 |
TV.SF04.EHN. | ML:0.0 | 0.003569895 | 0.128 | AML | other | m | 2020-12-15T19:48:59.09 |
IV.MCIV.CHE. | ML:1.2 | 0.000300776 | 0.2432 | AML | other | m | 2020-12-15T19:49:00.35 |
IV.ARCI.HHE. | ML:0.6 | 0.00004104836 | 0.1408 | AML | other | m | 2020-12-15T19:49:02.51 |
IV.ARCI.HHN. | ML:0.4 | 0.000024146345 | 0.192 | AML | other | m | 2020-12-15T19:49:03.32 |
IV.SACS.HHE. | ML:0.3 | 0.000016440709999999997 | 0.2048 | AML | other | m | 2020-12-15T19:49:04.31 |
IV.SACS.HHN. | ML:0.3 | 0.000017425813500000002 | 0.2688 | AML | other | m | 2020-12-15T19:49:04.48 |
IV.MGAB.HHE. | ML:0.4 | 0.000009495539 | 0.128 | AML | other | m | 2020-12-15T19:49:10.08 |
IV.MGAB.HHN. | ML:0.4 | 0.0000120109675 | 0.2048 | AML | other | m | 2020-12-15T19:49:09.60 |