A magnitude ML 0.9 earthquake occured in region: 5 km SE Massarosa (LU), on
and geographic coordinates (lat, lon) 43.8310, 10.3740 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 | 5 | 22471 | 22471 |
Vecchiano | PI | 6 | 12189 | 34660 |
San Giuliano Terme | PI | 9 | 31399 | 66059 |
Lucca | LU | 10 | 89046 | 155105 |
Viareggio | LU | 11 | 62467 | 217572 |
Pisa | PI | 13 | 89158 | 306730 |
Camaiore | LU | 13 | 32513 | 339243 |
Pescaglia | LU | 15 | 3526 | 342769 |
Capannori | LU | 16 | 46252 | 389021 |
Calci | PI | 16 | 6426 | 395447 |
Pietrasanta | LU | 19 | 24007 | 419454 |
Stazzema | LU | 20 | 3193 | 422647 |
Porcari | LU | 20 | 8845 | 431492 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 0.9 | 2021-09-15 21:45:10 |
43.8313 | 10.3742 | 10 | 2021-09-15 21:56:42 |
Sala Sismica INGV-Roma | 95480451 |
Field | Value |
---|---|
Time (UTC) | 2021-09-15 21:45:10 ± 0.21 |
Latitude | 43.8313 ± 0.0081 |
Longitude | 10.3742 ± 0.0187 |
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 | 95480451 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1465 |
Semi-minor axis of confidence ellipse (meter) | 788 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 85 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1460.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 175 |
Number of associated phases, regardless of their use for origin computation | 15 |
Number of defining phases | 15 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.34 |
Epicentral distance of station closest to the epicenter (degree) | 0.11781 |
Epicentral distance of station farthest from the epicenter (degree) | 0.59445 |
Number of stations at which the event was observed | 8 |
Number of stations from which data was used for origin computation | 8 |
Field | Value |
---|---|
Value | 0.9 |
Uncertainty | 0.2 |
Num. used stations | 8 |
Type of magnitude | ML |
Reference to an origin | 95480451 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-09-15 21:56:42 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
GU.SARM.EHE. | 2021-09-15T21:45:24.19 | 0.6 | undecidable | manual | S | 3 | 39.1275 | 50 | 0.06 | 50 |
GU.EQUI.HHE. | 2021-09-15T21:45:23.77 | 0.6 | undecidable | manual | S | 335 | 41.1255 | 50 | -0.87 | 39 |
IV.MAGO.CHE. | 2021-09-15T21:45:23.32 | 0.3 | undecidable | manual | P | 160 | 65.9895 | 50 | 0.65 | 61 |
GU.POPM.HHZ. | 2021-09-15T21:45:23.95 | 0.6 | undecidable | manual | S | 52 | 38.628 | 50 | -0.04 | 50 |
IV.BDI.HHZ. | 2021-09-15T21:45:21.80 | 0.6 | undecidable | manual | S | 34 | 31.1466 | 50 | -0.19 | 49 |
GU.CARD.HHZ. | 2021-09-15T21:45:19.27 | 0.6 | undecidable | manual | S | 22 | 23.2545 | 113 | -0.39 | 48 |
GU.POPM.HHZ. | 2021-09-15T21:45:18.43 | 0.3 | undecidable | manual | P | 52 | 38.628 | 50 | -0.04 | 75 |
GU.SARM.EHE. | 2021-09-15T21:45:18.77 | 0.3 | undecidable | manual | P | 3 | 39.1275 | 50 | 0.23 | 72 |
GU.EQUI.HHE. | 2021-09-15T21:45:18.83 | 0.1 | undecidable | manual | P | 335 | 41.1255 | 50 | -0.01 | 100 |
IV.BDI.HHZ. | 2021-09-15T21:45:17.35 | 0.3 | undecidable | manual | P | 34 | 31.1466 | 50 | 0.04 | 76 |
GU.MAIM.HHZ. | 2021-09-15T21:45:16.82 | 0.6 | undecidable | manual | S | 46 | 13.0758 | 127 | 0.26 | 50 |
GU.CARD.HHZ. | 2021-09-15T21:45:16.01 | 0.3 | undecidable | manual | P | 22 | 23.2545 | 113 | 0.04 | 77 |
IV.PII.HHZ. | 2021-09-15T21:45:16.81 | 0.6 | undecidable | manual | S | 135 | 17.1717 | 120 | -0.93 | 39 |
IV.PII.HHZ. | 2021-09-15T21:45:14.59 | 0.3 | undecidable | manual | P | 135 | 17.1717 | 120 | -0.26 | 74 |
GU.MAIM.HHZ. | 2021-09-15T21:45:14.66 | 0.1 | undecidable | manual | P | 46 | 13.0758 | 127 | 0.48 | 95 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
GU.MAIM.HHN. | ML:0.9 | 0.00009052643 | 0.0896 | AML | other | m | 2021-09-15T21:45:17.22 |
GU.MAIM.HHE. | ML:0.9 | 0.00007999999999999999 | 0.18 | AML | other | m | 2021-09-15T21:45:17.10 |
IV.PII.HHN. | ML:1.3 | 0.00015336650000000003 | 0.1792 | AML | other | m | 2021-09-15T21:45:17.14 |
IV.PII.HHE. | ML:1.2 | 0.00014660468500000002 | 0.1024 | AML | other | m | 2021-09-15T21:45:17.29 |
GU.CARD.HHN. | ML:0.9 | 0.00005631253 | 0.1408 | AML | other | m | 2021-09-15T21:45:20.15 |
GU.CARD.HHE. | ML:0.7 | 0.000031735765 | 0.1792 | AML | other | m | 2021-09-15T21:45:19.45 |
GU.POPM.HHE. | ML:0.6 | 0.0000156343615 | 0.2048 | AML | other | m | 2021-09-15T21:45:25.27 |
GU.POPM.HHN. | ML:0.8 | 0.000021240395000000004 | 0.1152 | AML | other | m | 2021-09-15T21:45:24.51 |