A magnitude ML 1.1 earthquake occured in region: 4 km NW Vecchiano (PI), on
and geographic coordinates (lat, lon) 43.8190, 10.3690 at 11 km depth.
The earthquake was located by: Bollettino Sismico Italiano INGV.
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 | 6 | 22471 | 34660 |
San Giuliano Terme | PI | 9 | 31399 | 66059 |
Viareggio | LU | 11 | 62467 | 128526 |
Lucca | LU | 11 | 89046 | 217572 |
Pisa | PI | 12 | 89158 | 306730 |
Camaiore | LU | 14 | 32513 | 339243 |
Calci | PI | 16 | 6426 | 345669 |
Capannori | LU | 17 | 46252 | 391921 |
Pescaglia | LU | 17 | 3526 | 395447 |
Pietrasanta | LU | 19 | 24007 | 419454 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
ML 1.1 | 2021-10-31 04:49:25 |
43.8187 | 10.369 | 11 | 2022-03-30 13:04:38 |
Bollettino Sismico Italiano INGV | 101080351 |
Reviewed Rev100 |
ML 1.0 | 2021-10-31 04:49:25 |
43.8273 | 10.3735 | 10 | 2021-10-31 05:06:31 |
Sala Sismica INGV-Roma | 97104321 |
Field | Value |
---|---|
Time (UTC) | 2021-10-31 04:49:25 ± 0.23 |
Latitude | 43.8187 ± 0.0117 |
Longitude | 10.3690 ± 0.0187 |
Depth (km) | 11 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | earthquake |
Origin ID | 101080351 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1487 |
Semi-minor axis of confidence ellipse (meter) | 1166 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 76 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1490.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 205 |
Number of associated phases, regardless of their use for origin computation | 23 |
Number of defining phases | 13 |
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) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.38041 |
Number of stations at which the event was observed | 17 |
Number of stations from which data was used for origin computation | 7 |
Field | Value |
---|---|
Value | 1.1 |
Uncertainty | 0.2 |
Num. used stations | 6 |
Type of magnitude | ML |
Reference to an origin | 101080351 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2022-02-17 12:03:19 |
Field | Value |
---|---|
Value | 1.0 |
Uncertainty | 0.2 |
Num. used stations | 6 |
Type of magnitude | ML |
Reference to an origin | 97104321 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-10-31 05:06:31 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.MTGR.HHZ. | 2021-10-31T04:51:12.99 | 3.0 | positive | manual | Pg | 19.85 | 0 | |||
IV.CFMN.HHZ. | 2021-10-31T04:51:11.16 | 3.0 | undecidable | manual | Sn | -0.01 | 0 | |||
IV.ESML.HHZ. | 2021-10-31T04:51:04.00 | 3.0 | negative | manual | Pn | -1.47 | 0 | |||
CH.FUORN.HHZ. | 2021-10-31T04:50:49.65 | 3.0 | undecidable | manual | Sg | 7.99 | 0 | |||
GU.BHB.HHZ. | 2021-10-31T04:50:32.01 | 3.0 | undecidable | manual | Sn | 0.03 | 0 | |||
IV.COR1.EHZ. | 2021-10-31T04:50:27.69 | 3.0 | undecidable | manual | Sg | 8.19 | 0 | |||
OT.OT17.EHZ. | 2021-10-31T04:50:26.51 | 3.0 | negative | manual | Pn | -0.54 | 0 | |||
IV.STAL.HHZ. | 2021-10-31T04:50:16.42 | 3.0 | undecidable | manual | Pg | 6.62 | 0 | |||
IV.APEC.HHZ. | 2021-10-31T04:49:49.45 | 3.0 | undecidable | manual | Pn | -0.14 | 0 | |||
IV.RIBO.EHZ.01 | 2021-10-31T04:49:42.05 | 3.0 | negative | manual | P | 0.04 | 0 | |||
GU.POPM.HHZ. | 2021-10-31T04:49:38.94 | 0.6 | undecidable | manual | S | 51 | 39.9267 | 50 | 0.32 | 46 |
GU.EQUI.HHE. | 2021-10-31T04:49:38.62 | 0.3 | undecidable | manual | S | 336 | 42.2244 | 50 | -0.62 | 63 |
IV.BDI.HHE. | 2021-10-31T04:49:36.35 | 0.3 | undecidable | manual | S | 34 | 32.5452 | 50 | -0.32 | 70 |
GU.CARD.HHZ. | 2021-10-31T04:49:34.10 | 0.6 | undecidable | manual | S | 21 | 24.753 | 50 | -0.47 | 46 |
GU.POPM.HHZ. | 2021-10-31T04:49:33.22 | 0.1 | positive | manual | P | 51 | 39.9267 | 50 | 0.15 | 96 |
GU.EQUI.HHE. | 2021-10-31T04:49:33.43 | 0.3 | undecidable | manual | P | 336 | 42.2244 | 50 | 0 | 74 |
GU.SARM.EHE. | 2021-10-31T04:49:33.64 | 0.3 | undecidable | manual | P | 4 | 40.626 | 50 | 0.46 | 67 |
IV.BDI.HHE. | 2021-10-31T04:49:32.10 | 0.1 | undecidable | manual | P | 34 | 32.5452 | 50 | 0.16 | 97 |
GU.MAIM.HHZ. | 2021-10-31T04:49:31.49 | 0.6 | undecidable | manual | S | 43 | 14.3745 | 127 | -0.27 | 49 |
IV.PII.HHZ. | 2021-10-31T04:49:31.75 | 0.3 | undecidable | manual | S | 131 | 16.4724 | 124 | -0.61 | 67 |
GU.CARD.HHZ. | 2021-10-31T04:49:30.90 | 0.1 | positive | manual | P | 21 | 24.753 | 50 | 0.17 | 98 |
GU.MAIM.HHZ. | 2021-10-31T04:49:29.43 | 0.1 | undecidable | manual | P | 43 | 14.3745 | 127 | 0.32 | 97 |
IV.PII.HHZ. | 2021-10-31T04:49:29.60 | 0.1 | undecidable | manual | P | 131 | 16.4724 | 124 | 0.14 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
GU.MAIM.HHN. | ML:0.9 | 0.000078204625 | 0.24 | AML | other | m | 2021-10-31T04:49:31.78 |
GU.MAIM.HHE. | ML:0.9 | 0.00007319263 | 0.16 | AML | other | m | 2021-10-31T04:49:31.86 |
IV.PII.HHN. | ML:1.3 | 0.00017549999999999998 | 0.26 | AML | other | m | 2021-10-31T04:49:32.13 |
IV.PII.HHE. | ML:1.3 | 0.0001705 | 0.28 | AML | other | m | 2021-10-31T04:49:32.28 |
GU.CARD.HHE. | ML:1.0 | 0.00005840669 | 0.1824 | AML | other | m | 2021-10-31T04:49:34.15 |
GU.CARD.HHN. | ML:0.9 | 0.00004743359499999999 | 0.1024 | AML | other | m | 2021-10-31T04:49:34.55 |