A magnitude ML 0.4 earthquake occured in region: 4 km NE Vecchiano (PI), on
and geographic coordinates (lat, lon) 43.8210, 10.4060 at 10 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 |
---|---|---|---|---|
Vecchiano | PI | 5 | 12189 | 12189 |
San Giuliano Terme | PI | 7 | 31399 | 43588 |
Massarosa | LU | 7 | 22471 | 66059 |
Lucca | LU | 8 | 89046 | 155105 |
Pisa | PI | 12 | 89158 | 244263 |
Viareggio | LU | 14 | 62467 | 306730 |
Calci | PI | 14 | 6426 | 313156 |
Capannori | LU | 14 | 46252 | 359408 |
Camaiore | LU | 16 | 32513 | 391921 |
Pescaglia | LU | 16 | 3526 | 395447 |
Porcari | LU | 17 | 8845 | 404292 |
Buti | PI | 18 | 5791 | 410083 |
Vicopisano | PI | 20 | 8559 | 418642 |
Cascina | PI | 20 | 45257 | 463899 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 0.4 | 2021-10-29 20:49:52 |
43.8208 | 10.4057 | 10 | 2021-10-29 21:01:24 |
Sala Sismica INGV-Roma | 97074141 |
Field | Value |
---|---|
Time (UTC) | 2021-10-29 20:49:52 ± 0.4 |
Latitude | 43.8208 ± 0.0072 |
Longitude | 10.4057 ± 0.0349 |
Depth (km) | 10 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 97074141 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 2833 |
Semi-minor axis of confidence ellipse (meter) | 371 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 262 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 2830.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 236 |
Number of associated phases, regardless of their use for origin computation | 8 |
Number of defining phases | 8 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.29 |
Epicentral distance of station closest to the epicenter (degree) | 0.11152 |
Epicentral distance of station farthest from the epicenter (degree) | 0.33815 |
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 | 0.4 |
Uncertainty | 0.2 |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 97074141 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-10-29 21:01:24 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
GU.POPM.HHZ. | 2021-10-29T20:50:05.00 | 0.6 | undecidable | manual | S | 48 | 37.5291 | 50 | 0.1 | 48 |
GU.CARD.HHZ. | 2021-10-29T20:50:00.49 | 0.6 | undecidable | manual | S | 15 | 23.5542 | 112 | -0.5 | 45 |
GU.POPM.HHZ. | 2021-10-29T20:49:59.43 | 0.1 | undecidable | manual | P | 48 | 37.5291 | 50 | -0.08 | 97 |
IV.PII.HHZ. | 2021-10-29T20:49:57.95 | 0.3 | undecidable | manual | S | 139 | 14.5743 | 124 | -0.27 | 73 |
GU.CARD.HHZ. | 2021-10-29T20:49:57.10 | 0.1 | undecidable | manual | P | 15 | 23.5542 | 112 | -0.15 | 98 |
GU.MAIM.HHZ. | 2021-10-29T20:49:57.73 | 0.3 | undecidable | manual | S | 34 | 12.3765 | 128 | 0.13 | 75 |
GU.MAIM.HHZ. | 2021-10-29T20:49:55.67 | 0.1 | undecidable | manual | P | 34 | 12.3765 | 128 | 0.38 | 95 |
IV.PII.HHZ. | 2021-10-29T20:49:55.77 | 0.1 | undecidable | manual | P | 139 | 14.5743 | 124 | 0.12 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
GU.MAIM.HHN. | ML:0.2 | 0.00001765 | 0.4 | AML | other | m | 2021-10-29T20:49:58.00 |
GU.MAIM.HHE. | ML:0.1 | 0.000015734999999999998 | 0.16 | AML | other | m | 2021-10-29T20:49:58.16 |
IV.PII.HHN. | ML:0.5 | 0.000031188499999999995 | 0.44 | AML | other | m | 2021-10-29T20:49:58.29 |
IV.PII.HHE. | ML:0.6 | 0.000039399999999999995 | 0.3 | AML | other | m | 2021-10-29T20:49:58.44 |