A magnitude ML 1.4 earthquake occured in region: 4 km NE Castelnuovo di Val di Cecina (PI), on
and geographic coordinates (lat, lon) 43.2340, 10.9360 at 6 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 |
---|---|---|---|---|
Castelnuovo di Val di Cecina | PI | 4 | 2231 | 2231 |
Pomarance | PI | 9 | 5897 | 8128 |
Radicondoli | SI | 9 | 914 | 9042 |
Monterotondo Marittimo | GR | 12 | 1371 | 10413 |
Montieri | GR | 13 | 1204 | 11617 |
Casole d'Elsa | SI | 15 | 3897 | 15514 |
Chiusdino | SI | 15 | 1903 | 17417 |
Monteverdi Marittimo | PI | 19 | 758 | 18175 |
Volterra | PI | 20 | 10519 | 28694 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.4 | 2021-05-25 00:19:15 |
43.234 | 10.936 | 6 | 2021-05-25 00:33:49 |
Sala Sismica INGV-Roma | 90467381 |
Field | Value |
---|---|
Time (UTC) | 2021-05-25 00:19:15 ± 0.18 |
Latitude | 43.2340 ± 0.0090 |
Longitude | 10.9360 ± 0.0086 |
Depth (km) | 6 ± 2 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 90467381 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 958 |
Semi-minor axis of confidence ellipse (meter) | 137 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 4 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 960.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 126 |
Number of associated phases, regardless of their use for origin computation | 9 |
Number of defining phases | 9 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.36 |
Epicentral distance of station closest to the epicenter (degree) | 0.12141 |
Epicentral distance of station farthest from the epicenter (degree) | 0.44606 |
Number of stations at which the event was observed | 6 |
Number of stations from which data was used for origin computation | 6 |
Field | Value |
---|---|
Value | 1.4 |
Uncertainty | 0.0 |
Num. used stations | 2 |
Type of magnitude | ML |
Reference to an origin | 90467381 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-05-25 00:33:49 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.CASP.HHZ. | 2021-05-25T00:19:25.33 | 0.3 | undecidable | manual | P | 187 | 49.5171 | 50 | -0.2 | 70 |
IV.MAGO.CHZ. | 2021-05-25T00:19:23.67 | 0.1 | undecidable | manual | S | 281 | 22.8549 | 104 | -0.35 | 95 |
IV.CSNT.HHZ. | 2021-05-25T00:19:23.44 | 0.3 | undecidable | manual | P | 47 | 39.0276 | 99 | -0.28 | 70 |
IV.RIBO.EHZ.01 | 2021-05-25T00:19:22.52 | 0.1 | undecidable | manual | P | 164 | 32.8449 | 100 | 0.02 | 100 |
IV.FROS.CHZ. | 2021-05-25T00:19:22.24 | 0.1 | undecidable | manual | S | 99 | 17.9709 | 108 | -0.15 | 100 |
IV.MAGO.CHZ. | 2021-05-25T00:19:21.03 | 0.1 | undecidable | manual | P | 281 | 22.8549 | 104 | 0.48 | 92 |
IV.TRIF.CHZ. | 2021-05-25T00:19:20.68 | 0.1 | undecidable | manual | S | 192 | 13.4754 | 114 | -0.25 | 99 |
IV.TRIF.CHZ. | 2021-05-25T00:19:19.13 | 0.1 | undecidable | manual | P | 192 | 13.4754 | 114 | 0.36 | 96 |
IV.FROS.CHZ. | 2021-05-25T00:19:19.86 | 0.1 | undecidable | manual | P | 99 | 17.9709 | 108 | 0.25 | 98 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.TRIF.CHN. | ML:1.4 | 0.000312 | 0.1 | AML | other | m | 2021-05-25T00:19:21.48 |
IV.TRIF.CHE. | ML:1.4 | 0.000279 | 0.72 | AML | other | m | 2021-05-25T00:19:21.74 |