A magnitude ML 1.1 earthquake occured in region: 4 km E Castelnuovo di Val di Cecina (PI), on
and geographic coordinates (lat, lon) 43.2180, 10.9590 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 |
---|---|---|---|---|
Castelnuovo di Val di Cecina | PI | 4 | 2231 | 2231 |
Radicondoli | SI | 8 | 914 | 3145 |
Montieri | GR | 11 | 1204 | 4349 |
Monterotondo Marittimo | GR | 12 | 1371 | 5720 |
Pomarance | PI | 12 | 5897 | 11617 |
Chiusdino | SI | 13 | 1903 | 13520 |
Casole d'Elsa | SI | 15 | 3897 | 17417 |
Massa Marittima | GR | 19 | 8375 | 25792 |
Monticiano | SI | 20 | 1571 | 27363 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
ML 1.1 | 2021-01-04 00:54:19 |
43.2182 | 10.9587 | 9 | 2021-07-12 16:54:57 |
Bollettino Sismico Italiano INGV | 86851701 |
Reviewed Rev100 |
ML 1.0 | 2021-01-04 00:54:19 |
43.2058 | 10.9602 | 10 | 2021-01-04 01:03:32 |
Sala Sismica INGV-Roma | 86001651 |
Field | Value |
---|---|
Time (UTC) | 2021-01-04 00:54:19 ± 0.17 |
Latitude | 43.2182 ± 0.0099 |
Longitude | 10.9587 ± 0.0148 |
Depth (km) | 9 (operator assigned) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | earthquake |
Origin ID | 86851701 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1500 |
Semi-minor axis of confidence ellipse (meter) | 580 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 313 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1500.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 201 |
Number of associated phases, regardless of their use for origin computation | 6 |
Number of defining phases | 6 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.22 |
Epicentral distance of station closest to the epicenter (degree) | 0.11152 |
Epicentral distance of station farthest from the epicenter (degree) | 0.35074 |
Number of stations at which the event was observed | 3 |
Number of stations from which data was used for origin computation | 3 |
Field | Value |
---|---|
Value | 1.1 |
Uncertainty | 0.0 |
Num. used stations | 2 |
Type of magnitude | ML |
Reference to an origin | 86851701 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2021-02-05 11:52:09 |
Field | Value |
---|---|
Value | 1.0 |
Uncertainty | 0.0 |
Num. used stations | 2 |
Type of magnitude | ML |
Reference to an origin | 86001651 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-01-04 01:03:32 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.CSNT.HHE. | 2021-01-04T00:54:32.71 | 0.6 | undecidable | manual | S | 43 | 38.9277 | 50 | -0.23 | 46 |
IV.CSNT.HHE. | 2021-01-04T00:54:27.36 | 0.3 | undecidable | manual | P | 43 | 38.9277 | 50 | 0.01 | 73 |
IV.FROS.CHZ. | 2021-01-04T00:54:25.91 | 0.6 | undecidable | manual | S | 93 | 15.9729 | 120 | -0.22 | 48 |
IV.TRIF.CHZ. | 2021-01-04T00:54:24.88 | 0.3 | undecidable | manual | S | 202 | 12.3765 | 127 | -0.19 | 74 |
IV.FROS.CHZ. | 2021-01-04T00:54:23.67 | 0.1 | undecidable | manual | P | 93 | 15.9729 | 120 | 0.26 | 96 |
IV.TRIF.CHZ. | 2021-01-04T00:54:22.90 | 0.1 | undecidable | manual | P | 202 | 12.3765 | 127 | 0.1 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.TRIF.CHN. | ML:1.0 | 0.0001285 | 1.5 | AML | other | m | 2021-01-04T00:54:25.24 |
IV.TRIF.CHE. | ML:1.0 | 0.0001265 | 0.58 | AML | other | m | 2021-01-04T00:54:25.46 |