A magnitude ML 1.1 (controlled explosion) earthquake occured in region: Costa Toscana settentrionale (Massa Carrara, Lucca, Pisa), on
and geographic coordinates (lat, lon) 43.9690, 9.9230 at 0 km depth.
The earthquake was located by: Bollettino Sismico Italiano INGV.
Event type: controlled explosion.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 |
---|---|---|---|---|
Ameglia | SP | 11 | 4365 | 4365 |
Portovenere | SP | 12 | 3630 | 7995 |
Lerici | SP | 12 | 10228 | 18223 |
Ortonovo | SP | 16 | 8277 | 26500 |
Arcola | SP | 16 | 10607 | 37107 |
Sarzana | SP | 16 | 21976 | 59083 |
Castelnuovo Magra | SP | 16 | 8415 | 67498 |
La Spezia | SP | 17 | 93959 | 161457 |
Carrara | MS | 19 | 63133 | 224590 |
Massa | MS | 19 | 69479 | 294069 |
Vezzano Ligure | SP | 20 | 7356 | 301425 |
Forte dei Marmi | LU | 20 | 7510 | 308935 |
Fosdinovo | MS | 20 | 4883 | 313818 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
ML 1.1 | 2023-04-27 07:27:53 |
43.9692 | 9.9228 | 0 | 2024-03-01 17:18:20 |
Bollettino Sismico Italiano INGV | 124928571 |
Reviewed Rev100 |
ML 1.1 | 2023-04-27 07:27:54 |
43.9907 | 9.9402 | 4 | 2023-04-27 07:40:05 |
Sala Sismica INGV-Roma | 116792081 |
Field | Value |
---|---|
Time (UTC) | 2023-04-27 07:27:53 ± 0.51 |
Latitude | 43.9692 ± 0.0297 |
Longitude | 9.9228 ± 0.0237 |
Depth (km) | 0 (operator assigned) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | controlled explosion |
Origin ID | 124928571 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 3620 |
Semi-minor axis of confidence ellipse (meter) | 1340 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 25 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 3620.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 227 |
Number of associated phases, regardless of their use for origin computation | 30 |
Number of defining phases | 7 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.4 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.78061 |
Number of stations at which the event was observed | 29 |
Number of stations from which data was used for origin computation | 7 |
Field | Value |
---|---|
Value | 1.1 |
Uncertainty | 0.2 |
Num. used stations | 8 |
Type of magnitude | ML |
Reference to an origin | 124928571 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2024-01-29 14:35:46 |
Field | Value |
---|---|
Value | 1.1 |
Uncertainty | 0.2 |
Num. used stations | 8 |
Type of magnitude | ML |
Reference to an origin | 116792081 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2023-04-27 07:40:05 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.GATE.HHZ. | 2023-04-27T07:30:12.26 | 3.0 | undecidable | manual | Sg | 17.76 | 0 | |||
IV.VAGA.HHZ. | 2023-04-27T07:30:04.11 | 3.0 | undecidable | manual | Sg | 18.25 | 0 | |||
IV.ENIC.HHZ. | 2023-04-27T07:29:48.29 | 3.0 | undecidable | manual | Pn | 6.61 | 0 | |||
OT.OT15.EHZ. | 2023-04-27T07:29:39.07 | 3.0 | undecidable | manual | Pg | 17.66 | 0 | |||
MN.SENA.HHZ. | 2023-04-27T07:29:38.03 | 3.0 | undecidable | manual | Sg | 7.67 | 0 | |||
IV.RNI2.HHZ. | 2023-04-27T07:29:36.88 | 3.0 | undecidable | manual | Sn | -3.54 | 0 | |||
IV.MGR.HHZ. | 2023-04-27T07:29:33.83 | 3.0 | undecidable | manual | Pg | 15.63 | 0 | |||
IV.RCAV.EHZ. | 2023-04-27T07:29:32.28 | 3.0 | undecidable | manual | Sg | 11.25 | 0 | |||
CR.STON.BHZ. | 2023-04-27T07:29:28.82 | 3.0 | positive | manual | Pn | 8.45 | 0 | |||
IV.ERC.EHZ. | 2023-04-27T07:29:27.98 | 3.0 | undecidable | manual | Pn | 2.6 | 0 | |||
IV.CAFE.HHZ. | 2023-04-27T07:29:24.32 | 3.0 | negative | manual | Pg | 16.559999 | 0 | |||
IV.SNAL.HHZ. | 2023-04-27T07:29:22.89 | 3.0 | negative | manual | Pg | 14.49 | 0 | |||
IV.MCRV.HHZ. | 2023-04-27T07:29:20.95 | 3.0 | undecidable | manual | Pg | 11.65 | 0 | |||
IX.SCL3.EHZ.02 | 2023-04-27T07:29:18.07 | 3.0 | positive | manual | Pn | 5.23 | 0 | |||
IV.MRLC.HHZ. | 2023-04-27T07:29:17.26 | 3.0 | undecidable | manual | Pn | 5.13 | 0 | |||
IV.GATE.HHZ. | 2023-04-27T07:29:11.56 | 3.0 | positive | manual | Pg | 10.43 | 0 | |||
IV.MMO1.EHZ. | 2023-04-27T07:29:10.73 | 3.0 | undecidable | manual | Sn | -2.24 | 0 | |||
IV.PTRJ.HHZ. | 2023-04-27T07:29:10.67 | 3.0 | undecidable | manual | Pg | 11.55 | 0 | |||
IV.ARVD.HHZ. | 2023-04-27T07:29:05.81 | 3.0 | undecidable | manual | Sg | 3.63 | 0 | |||
IV.MAGA.HHZ. | 2023-04-27T07:28:53.34 | 3.0 | undecidable | manual | Sg | -1.28 | 0 | |||
IV.FAGN.HHZ. | 2023-04-27T07:28:43.56 | 3.0 | positive | manual | Pn | -0.53 | 0 | |||
IV.SSFR.HHZ. | 2023-04-27T07:28:35.65 | 3.0 | negative | manual | Pg | 5.3 | 0 | |||
IV.RIBO.EHZ.01 | 2023-04-27T07:28:35.16 | 3.0 | undecidable | manual | S | -2.48 | 0 | |||
GU.GORR.HHZ. | 2023-04-27T07:28:09.75 | 0.3 | undecidable | manual | P | 325 | 86.6466 | 50 | -0.42 | 65 |
GU.GRAM.HHZ. | 2023-04-27T07:28:05.15 | 0.3 | undecidable | manual | P | 11 | 58.8966 | 90 | -0.64 | 64 |
IV.BDI.HHZ. | 2023-04-27T07:28:04.70 | 0.3 | undecidable | manual | P | 79 | 54.7008 | 90 | -0.24 | 72 |
GU.MAIM.HHZ. | 2023-04-27T07:28:03.28 | 0.3 | undecidable | manual | P | 98 | 45.8208 | 90 | 0.11 | 75 |
MN.VLC.HHZ. | 2023-04-27T07:28:02.54 | 0.3 | undecidable | manual | P | 60 | 42.5241 | 90 | 0.03 | 76 |
GU.EQUI.HHZ. | 2023-04-27T07:28:00.06 | 0.1 | undecidable | manual | P | 40 | 28.5492 | 90 | 0.36 | 97 |
IV.PLMA.HHZ. | 2023-04-27T07:27:56.48 | 0.1 | positive | manual | P | 328 | 10.4784 | 91 | 0.39 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.PLMA.HHE. | ML:1.1 | 0.000234 | 1.56 | AML | other | m | 2023-04-27T07:27:58.20 |
IV.PLMA.HHN. | ML:1.2 | 0.00026767284999999996 | 0.576 | AML | other | m | 2023-04-27T07:27:59.31 |
GU.EQUI.HHE. | ML:1.0 | 0.0000525 | 0.34 | AML | other | m | 2023-04-27T07:28:04.64 |
GU.EQUI.HHN. | ML:0.8 | 0.000035279875 | 0.384 | AML | other | m | 2023-04-27T07:28:09.50 |
IV.BDI.HHE. | ML:1.0 | 0.0000253 | 0.32 | AML | other | m | 2023-04-27T07:28:15.62 |
GU.GRAM.HHE. | ML:1.4 | 0.00005305 | 0.66 | AML | other | m | 2023-04-27T07:28:16.40 |
IV.BDI.HHN. | ML:0.9 | 0.00001920926 | 0.1792 | AML | other | m | 2023-04-27T07:28:17.35 |
GU.GRAM.HHN. | ML:1.4 | 0.000053099999999999996 | 0.26 | AML | other | m | 2023-04-27T07:28:17.37 |