A magnitude ML 0.9 earthquake occured in region: 4 km SW Lucca (LU), on
and geographic coordinates (lat, lon) 43.8150, 10.4670 at 11 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 |
---|---|---|---|---|
Lucca | LU | 4 | 89046 | 89046 |
San Giuliano Terme | PI | 6 | 31399 | 120445 |
Vecchiano | PI | 7 | 12189 | 132634 |
Capannori | LU | 10 | 46252 | 178886 |
Calci | PI | 11 | 6426 | 185312 |
Massarosa | LU | 12 | 22471 | 207783 |
Pisa | PI | 12 | 89158 | 296941 |
Porcari | LU | 12 | 8845 | 305786 |
Buti | PI | 14 | 5791 | 311577 |
Vicopisano | PI | 16 | 8559 | 320136 |
Altopascio | LU | 17 | 15481 | 335617 |
Montecarlo | LU | 17 | 4428 | 340045 |
Cascina | PI | 17 | 45257 | 385302 |
Bientina | PI | 17 | 8062 | 393364 |
Pescaglia | LU | 18 | 3526 | 396890 |
Viareggio | LU | 18 | 62467 | 459357 |
Calcinaia | PI | 19 | 12439 | 471796 |
Camaiore | LU | 19 | 32513 | 504309 |
Villa Basilica | LU | 19 | 1633 | 505942 |
Borgo a Mozzano | LU | 19 | 6994 | 512936 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 0.9 | 2021-12-30 04:09:38 |
43.8153 | 10.4673 | 11 | 2021-12-30 04:13:37 |
Sala Sismica INGV-Roma | 99137061 |
Field | Value |
---|---|
Time (UTC) | 2021-12-30 04:09:38 ± 0.26 |
Latitude | 43.8153 ± 0.0054 |
Longitude | 10.4673 ± 0.0399 |
Depth (km) | 11 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 99137061 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 3216 |
Semi-minor axis of confidence ellipse (meter) | 396 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 264 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 3220.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 214 |
Number of associated phases, regardless of their use for origin computation | 7 |
Number of defining phases | 7 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.14 |
Epicentral distance of station closest to the epicenter (degree) | 0.09893 |
Epicentral distance of station farthest from the epicenter (degree) | 0.31027 |
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 | 0.9 |
Uncertainty | 0.0 |
Num. used stations | 2 |
Type of magnitude | ML |
Reference to an origin | 99137061 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-12-30 04:13:37 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.BDI.HHZ. | 2021-12-30T04:09:48.60 | 0.6 | undecidable | manual | S | 20 | 29.2485 | 50 | -0.19 | 47 |
GU.POPM.HHZ. | 2021-12-30T04:09:45.41 | 0.3 | undecidable | manual | P | 42 | 34.4433 | 50 | 0.2 | 69 |
IV.BDI.HHZ. | 2021-12-30T04:09:44.32 | 0.6 | negative | manual | P | 20 | 29.2485 | 50 | -0.1 | 48 |
GU.MAIM.HHZ. | 2021-12-30T04:09:43.78 | 0.6 | undecidable | manual | S | 10 | 10.9779 | 135 | -0.03 | 50 |
IV.PII.HHZ. | 2021-12-30T04:09:43.79 | 0.6 | undecidable | manual | S | 156 | 11.3775 | 134 | -0.1 | 49 |
IV.PII.HHZ. | 2021-12-30T04:09:41.61 | 0.1 | negative | manual | P | 156 | 11.3775 | 134 | 0.01 | 100 |
GU.MAIM.HHZ. | 2021-12-30T04:09:41.61 | 0.3 | negative | manual | P | 10 | 10.9779 | 135 | 0.06 | 74 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.PII.HHN. | ML:0.9 | 0.0000886 | 0.24 | AML | other | m | 2021-12-30T04:09:44.16 |
IV.PII.HHE. | ML:0.9 | 0.00008450000000000001 | 0.26 | AML | other | m | 2021-12-30T04:09:44.17 |