A magnitude ML 1.0 earthquake occured in region: 4 km SE Massarosa (LU), on
and geographic coordinates (lat, lon) 43.8420, 10.3760 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 |
---|---|---|---|---|
Massarosa | LU | 4 | 22471 | 22471 |
Vecchiano | PI | 7 | 12189 | 34660 |
Lucca | LU | 10 | 89046 | 123706 |
San Giuliano Terme | PI | 10 | 31399 | 155105 |
Viareggio | LU | 11 | 62467 | 217572 |
Camaiore | LU | 12 | 32513 | 250085 |
Pisa | PI | 14 | 89158 | 339243 |
Pescaglia | LU | 14 | 3526 | 342769 |
Capannori | LU | 16 | 46252 | 389021 |
Calci | PI | 17 | 6426 | 395447 |
Pietrasanta | LU | 18 | 24007 | 419454 |
Stazzema | LU | 19 | 3193 | 422647 |
Porcari | LU | 19 | 8845 | 431492 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.0 | 2021-10-25 13:43:38 |
43.8418 | 10.3762 | 10 | 2021-10-25 13:58:32 |
Sala Sismica INGV-Roma | 96981301 |
Field | Value |
---|---|
Time (UTC) | 2021-10-25 13:43:38 ± 0.24 |
Latitude | 43.8418 ± 0.0081 |
Longitude | 10.3762 ± 0.0224 |
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 | 96981301 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1817 |
Semi-minor axis of confidence ellipse (meter) | 881 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 87 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1820.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 196 |
Number of associated phases, regardless of their use for origin computation | 12 |
Number of defining phases | 12 |
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) | 0.10972 |
Epicentral distance of station farthest from the epicenter (degree) | 0.36153 |
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 | 1.0 |
Uncertainty | 0.3 |
Num. used stations | 6 |
Type of magnitude | ML |
Reference to an origin | 96981301 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-10-25 13:58:32 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
GU.SARM.EHZ. | 2021-10-25T13:43:51.05 | 0.6 | undecidable | manual | S | 3 | 38.0286 | 50 | -0.19 | 48 |
GU.EQUI.HHZ. | 2021-10-25T13:43:50.96 | 0.3 | undecidable | manual | S | 334 | 40.1265 | 50 | -0.84 | 58 |
IV.BDI.HNZ. | 2021-10-25T13:43:49.14 | 0.3 | undecidable | manual | S | 35 | 30.1476 | 50 | 0.01 | 76 |
GU.CARD.HHZ. | 2021-10-25T13:43:46.51 | 0.3 | undecidable | manual | S | 22 | 22.1556 | 114 | -0.28 | 72 |
GU.SARM.EHZ. | 2021-10-25T13:43:46.19 | 0.3 | undecidable | manual | P | 3 | 38.0286 | 50 | 0.39 | 69 |
GU.EQUI.HHZ. | 2021-10-25T13:43:46.47 | 0.3 | undecidable | manual | P | 334 | 40.1265 | 50 | 0.34 | 69 |
IV.PII.HHZ. | 2021-10-25T13:43:44.88 | 0.3 | undecidable | manual | S | 138 | 17.871 | 119 | -0.59 | 67 |
IV.BDI.HNZ. | 2021-10-25T13:43:44.73 | 0.1 | undecidable | manual | P | 35 | 30.1476 | 50 | 0.14 | 98 |
GU.CARD.HHZ. | 2021-10-25T13:43:43.35 | 0.1 | undecidable | manual | P | 22 | 22.1556 | 114 | 0.12 | 100 |
GU.MAIM.HHZ. | 2021-10-25T13:43:43.70 | 0.3 | undecidable | manual | S | 49 | 12.1767 | 129 | -0.12 | 76 |
IV.PII.HHZ. | 2021-10-25T13:43:42.63 | 0.1 | undecidable | manual | P | 138 | 17.871 | 119 | 0.16 | 100 |
GU.MAIM.HHZ. | 2021-10-25T13:43:41.91 | 0.1 | undecidable | manual | P | 49 | 12.1767 | 129 | 0.39 | 96 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.PII.HHN. | ML:1.1 | 0.00010515 | 0.84 | AML | other | m | 2021-10-25T13:43:44.49 |
IV.PII.HHE. | ML:1.0 | 0.00009095 | 0.44 | AML | other | m | 2021-10-25T13:43:45.22 |
GU.CARD.HHE. | ML:1.2 | 0.0001125 | 0.16 | AML | other | m | 2021-10-25T13:43:46.96 |
GU.CARD.HHN. | ML:1.1 | 0.00008075 | 0.14 | AML | other | m | 2021-10-25T13:43:47.09 |
GU.MAIM.HHE. | ML:0.4 | 0.000024414770000000003 | 0.1408 | AML | other | m | 2021-10-25T13:43:44.52 |
GU.MAIM.HHN. | ML:0.5 | 0.00003405647 | 0.16 | AML | other | m | 2021-10-25T13:43:43.76 |