A magnitude ML 1.2 earthquake occured in region: 4 km NW Vecchiano (PI), on
and geographic coordinates (lat, lon) 43.8120, 10.3680 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 |
---|---|---|---|---|
Vecchiano | PI | 4 | 12189 | 12189 |
Massarosa | LU | 7 | 22471 | 34660 |
San Giuliano Terme | PI | 8 | 31399 | 66059 |
Pisa | PI | 11 | 89158 | 155217 |
Viareggio | LU | 11 | 62467 | 217684 |
Lucca | LU | 11 | 89046 | 306730 |
Camaiore | LU | 15 | 32513 | 339243 |
Calci | PI | 15 | 6426 | 345669 |
Capannori | LU | 17 | 46252 | 391921 |
Pescaglia | LU | 18 | 3526 | 395447 |
Pietrasanta | LU | 20 | 24007 | 419454 |
Buti | PI | 20 | 5791 | 425245 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.2 | 2021-08-28 01:18:12 |
43.8122 | 10.3685 | 11 | 2021-08-28 01:25:37 |
Sala Sismica INGV-Roma | 94727791 |
Field | Value |
---|---|
Time (UTC) | 2021-08-28 01:18:12 ± 0.21 |
Latitude | 43.8122 ± 0.0090 |
Longitude | 10.3685 ± 0.0137 |
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 | 94727791 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1201 |
Semi-minor axis of confidence ellipse (meter) | 728 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 232 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1200.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 207 |
Number of associated phases, regardless of their use for origin computation | 13 |
Number of defining phases | 13 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.23 |
Epicentral distance of station closest to the epicenter (degree) | 0.13400 |
Epicentral distance of station farthest from the epicenter (degree) | 0.44067 |
Number of stations at which the event was observed | 7 |
Number of stations from which data was used for origin computation | 7 |
Field | Value |
---|---|
Value | 1.2 |
Uncertainty | 0.2 |
Num. used stations | 6 |
Type of magnitude | ML |
Reference to an origin | 94727791 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-08-28 01:25:37 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.CRMI.HHZ. | 2021-08-28T01:18:27.47 | 0.6 | undecidable | manual | S | 92 | 48.9177 | 50 | -0.24 | 49 |
GU.POPM.HHZ. | 2021-08-28T01:18:25.45 | 0.6 | undecidable | manual | S | 50 | 40.3263 | 50 | 0.03 | 51 |
GU.EQUI.HHZ. | 2021-08-28T01:18:25.46 | 0.6 | undecidable | manual | S | 336 | 42.8238 | 50 | -0.62 | 44 |
IV.BDI.HHZ. | 2021-08-28T01:18:23.38 | 0.6 | undecidable | manual | S | 33 | 33.2445 | 50 | -0.13 | 51 |
IV.CRMI.HHZ. | 2021-08-28T01:18:21.75 | 1.0 | negative | manual | P | 92 | 48.9177 | 50 | 0.64 | 22 |
GU.EQUI.HHZ. | 2021-08-28T01:18:20.37 | 0.6 | undecidable | manual | P | 336 | 42.8238 | 50 | 0.2 | 50 |
GU.POPM.HHZ. | 2021-08-28T01:18:19.96 | 0.1 | positive | manual | P | 50 | 40.3263 | 50 | 0.17 | 100 |
IV.PII.HHZ. | 2021-08-28T01:18:18.33 | 0.6 | undecidable | manual | S | 129 | 16.0728 | 124 | -0.45 | 49 |
GU.MAIM.HHZ. | 2021-08-28T01:18:18.37 | 0.6 | undecidable | manual | S | 41 | 14.874 | 126 | -0.09 | 53 |
IV.BDI.HHZ. | 2021-08-28T01:18:18.87 | 0.6 | undecidable | manual | P | 33 | 33.2445 | 50 | 0.19 | 50 |
GU.CARD.HHZ. | 2021-08-28T01:18:17.57 | 1.0 | undecidable | manual | P | 21 | 25.3524 | 50 | 0.09 | 26 |
IV.PII.HHZ. | 2021-08-28T01:18:16.13 | 0.6 | negative | manual | P | 129 | 16.0728 | 124 | 0.17 | 52 |
GU.MAIM.HHZ. | 2021-08-28T01:18:16.17 | 1.0 | undecidable | manual | P | 41 | 14.874 | 126 | 0.4 | 25 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
GU.MAIM.HHN. | ML:1.1 | 0.00012375 | 0.52 | AML | other | m | 2021-08-28T01:18:18.76 |
GU.MAIM.HHE. | ML:1.0 | 0.00008704999999999999 | 0.68 | AML | other | m | 2021-08-28T01:18:18.64 |
IV.PII.HHN. | ML:1.3 | 0.000191 | 0.26 | AML | other | m | 2021-08-28T01:18:18.69 |
IV.PII.HHE. | ML:1.4 | 0.000208 | 0.08 | AML | other | m | 2021-08-28T01:18:18.83 |
GU.CARD.HHE. | ML:1.1 | 0.00006365 | 0.58 | AML | other | m | 2021-08-28T01:18:20.97 |
GU.CARD.HHN. | ML:1.2 | 0.00008235000000000001 | 1.3 | AML | other | m | 2021-08-28T01:18:21.06 |