A magnitude ML 1.9 earthquake occured in region: 6 km NW Chiusdino (SI), on
and geographic coordinates (lat, lon) 43.1980, 11.0420 at 8 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 | 6 | 1903 | 1903 |
Radicondoli | SI | 7 | 914 | 2817 |
Montieri | GR | 8 | 1204 | 4021 |
Castelnuovo di Val di Cecina | PI | 11 | 2231 | 6252 |
Monticiano | SI | 13 | 1571 | 7823 |
Casole d'Elsa | SI | 16 | 3897 | 11720 |
Monterotondo Marittimo | GR | 16 | 1371 | 13091 |
Pomarance | PI | 18 | 5897 | 18988 |
Sovicille | SI | 18 | 10116 | 29104 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
ML 1.9 | 2021-04-04 10:40:42 |
43.1985 | 11.0415 | 8 | 2021-07-12 16:55:13 |
Bollettino Sismico Italiano INGV | 90574921 |
Reviewed Rev100 |
ML 1.9 | 2021-04-04 10:40:42 |
43.2022 | 11.0425 | 8 | 2021-04-04 10:48:38 |
Sala Sismica INGV-Roma | 88764471 |
Field | Value |
---|---|
Time (UTC) | 2021-04-04 10:40:42 ± 0.13 |
Latitude | 43.1985 ± 0.0072 |
Longitude | 11.0415 ± 0.0111 |
Depth (km) | 8 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | earthquake |
Origin ID | 90574921 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1005 |
Semi-minor axis of confidence ellipse (meter) | 394 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 304 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1000.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 97 |
Number of associated phases, regardless of their use for origin computation | 21 |
Number of defining phases | 18 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.37 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.81748 |
Number of stations at which the event was observed | 15 |
Number of stations from which data was used for origin computation | 12 |
Field | Value |
---|---|
Value | 1.9 |
Uncertainty | 0.3 |
Num. used stations | 11 |
Type of magnitude | ML |
Reference to an origin | 90574921 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2021-05-28 17:03:44 |
Field | Value |
---|---|
Value | 1.9 |
Uncertainty | 0.3 |
Num. used stations | 11 |
Type of magnitude | ML |
Reference to an origin | 88764471 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-04-04 10:48:38 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
OX.SABO.HNZ. | 2021-04-04T10:41:37.72 | 3.0 | undecidable | manual | Pn | 3.89 | 0 | |||
IV.RM33.EHZ. | 2021-04-04T10:41:15.11 | 3.0 | undecidable | manual | Pn | 2.75 | 0 | |||
IV.SBPO.HNZ. | 2021-04-04T10:41:12.49 | 3.0 | positive | manual | Pn | -0.67 | 0 | |||
IV.RUFI.EHE. | 2021-04-04T10:41:06.65 | 0.3 | undecidable | manual | S | 28 | 80.2641 | 50 | -0.14 | 65 |
IV.ARCI.HHZ. | 2021-04-04T10:40:59.00 | 0.3 | undecidable | manual | S | 137 | 52.1034 | 50 | -0.27 | 67 |
GU.MAIM.HHZ. | 2021-04-04T10:40:58.27 | 0.3 | undecidable | manual | P | 331 | 90.7425 | 50 | 0.25 | 62 |
IV.CASP.HHZ. | 2021-04-04T10:40:57.09 | 0.3 | undecidable | manual | S | 198 | 47.4192 | 50 | -0.93 | 54 |
IV.CELB.HHZ. | 2021-04-04T10:40:57.91 | 0.3 | undecidable | manual | P | 234 | 84.0492 | 50 | 0.93 | 50 |
IV.CAFI.HHZ. | 2021-04-04T10:40:56.05 | 0.1 | undecidable | manual | P | 79 | 76.0683 | 50 | 0.29 | 85 |
IV.MPPT.EHN. | 2021-04-04T10:40:56.66 | 0.3 | undecidable | manual | P | 3 | 84.249 | 50 | -0.37 | 61 |
IV.RUFI.EHE. | 2021-04-04T10:40:56.95 | 0.3 | undecidable | manual | P | 28 | 80.2641 | 50 | 0.54 | 59 |
TV.SF04.EHZ. | 2021-04-04T10:40:54.06 | 0.1 | undecidable | manual | P | 129 | 64.3911 | 50 | 0.11 | 90 |
TV.SF14.HHZ. | 2021-04-04T10:40:54.65 | 0.3 | undecidable | manual | P | 136 | 67.6767 | 50 | 0.18 | 66 |
IV.CSNT.HHZ. | 2021-04-04T10:40:54.18 | 0.6 | undecidable | manual | S | 33 | 36.4413 | 50 | -0.91 | 37 |
IV.ARCI.HHZ. | 2021-04-04T10:40:52.46 | 0.3 | undecidable | manual | P | 137 | 52.1034 | 50 | 0.39 | 65 |
IV.CASP.HHZ. | 2021-04-04T10:40:51.55 | 0.1 | undecidable | manual | P | 198 | 47.4192 | 50 | 0.2 | 91 |
IV.CSNT.HHZ. | 2021-04-04T10:40:49.42 | 0.1 | undecidable | manual | P | 33 | 36.4413 | 50 | -0.23 | 92 |
IV.TRIF.CHZ. | 2021-04-04T10:40:47.66 | 0.3 | undecidable | manual | S | 230 | 14.5743 | 119 | -0.36 | 70 |
IV.FROS.CHZ. | 2021-04-04T10:40:46.22 | 0.6 | undecidable | manual | S | 82 | 9.3795 | 131 | -0.31 | 47 |
IV.TRIF.CHZ. | 2021-04-04T10:40:45.56 | 0.1 | undecidable | manual | P | 230 | 14.5743 | 119 | -0.02 | 100 |
IV.FROS.CHZ. | 2021-04-04T10:40:44.82 | 0.1 | undecidable | manual | P | 82 | 9.3795 | 131 | 0.11 | 99 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.FROS.CHE. | ML:2.2 | 0.002575 | 0.24 | AML | other | m | 2021-04-04T10:40:46.32 |
IV.FROS.CHN. | ML:2.2 | 0.002255 | 0.22 | AML | other | m | 2021-04-04T10:40:46.69 |
IV.TRIF.CHN. | ML:2.2 | 0.0018050000000000002 | 1.42 | AML | other | m | 2021-04-04T10:40:47.15 |
IV.TRIF.CHE. | ML:2.2 | 0.0017549999999999998 | 0.66 | AML | other | m | 2021-04-04T10:40:48.42 |
IV.CSNT.HHN. | ML:1.7 | 0.0002085 | 0.22 | AML | other | m | 2021-04-04T10:40:54.27 |
IV.CSNT.HHE. | ML:1.6 | 0.00016749999999999998 | 0.64 | AML | other | m | 2021-04-04T10:40:54.75 |
IV.CASP.HHN. | ML:2.0 | 0.00028599999999999996 | 0.28 | AML | other | m | 2021-04-04T10:40:57.23 |
IV.CASP.HHE. | ML:1.9 | 0.00023126389999999998 | 0.6592 | AML | other | m | 2021-04-04T10:40:57.25 |
IV.ARCI.HHE. | ML:1.6 | 0.0001061 | 0.42 | AML | other | m | 2021-04-04T10:40:59.18 |
IV.ARCI.HNE. | ML:1.8 | 0.00016409965 | 1.1008 | AML | other | m | 2021-04-04T10:40:59.39 |
IV.ARCI.HHN. | ML:1.4 | 0.00006775000000000001 | 0.16 | AML | other | m | 2021-04-04T10:40:59.69 |