A magnitude ML 1.0 (controlled explosion) earthquake occured in region: Costa Toscana settentrionale (Massa Carrara, Lucca, Pisa), on
and geographic coordinates (lat, lon) 43.9580, 9.9160 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 | 13 | 4365 | 4365 |
Portovenere | SP | 13 | 3630 | 7995 |
Lerici | SP | 13 | 10228 | 18223 |
Ortonovo | SP | 18 | 8277 | 26500 |
Arcola | SP | 18 | 10607 | 37107 |
Castelnuovo Magra | SP | 18 | 8415 | 45522 |
Sarzana | SP | 18 | 21976 | 67498 |
La Spezia | SP | 18 | 93959 | 161457 |
Carrara | MS | 20 | 63133 | 224590 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
ML 1.0 | 2019-04-20 08:37:00 |
43.9582 | 9.916 | 0 | 2019-08-22 08:25:11 |
Bollettino Sismico Italiano INGV | 70882971 |
Reviewed Rev100 |
ML 1.1 | 2019-04-20 08:37:01 |
44.0282 | 9.8975 | 10 | 2019-04-20 08:47:46 |
Sala Sismica INGV-Roma | 67776711 |
Field | Value |
---|---|
Time (UTC) | 2019-04-20 08:37:00 ± 0.33 |
Latitude | 43.9582 ± 0.0207 |
Longitude | 9.9160 ± 0.0187 |
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 | 70882971 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 2500 |
Semi-minor axis of confidence ellipse (meter) | 1110 |
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) | 2500.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 204 |
Number of associated phases, regardless of their use for origin computation | 9 |
Number of defining phases | 8 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.38 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.78691 |
Number of stations at which the event was observed | 9 |
Number of stations from which data was used for origin computation | 8 |
Field | Value |
---|---|
Value | 1.0 |
Uncertainty | 0.3 |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 70882971 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2019-07-26 00:57:11 |
Field | Value |
---|---|
Value | 1.1 |
Uncertainty | 0.2 |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 67776711 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2019-04-20 08:47:46 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.NDIM.HNZ. | 2019-04-20T08:37:41.70 | 3.0 | undecidable | manual | S | 0.06 | 0 | |||
GU.GORR.HHZ. | 2019-04-20T08:37:16.48 | 0.3 | undecidable | manual | P | 326 | 87.3459 | 50 | -0.3 | 66 |
IV.MTCR.EHZ. | 2019-04-20T08:37:16.68 | 0.3 | undecidable | manual | P | 85 | 87.0462 | 50 | -0.05 | 69 |
IV.PII.HHZ. | 2019-04-20T08:37:11.81 | 0.3 | undecidable | manual | P | 118 | 55.3002 | 90 | 0.24 | 71 |
IV.MSSA.HHZ. | 2019-04-20T08:37:10.25 | 0.1 | undecidable | manual | P | 322 | 50.8158 | 90 | -0.42 | 92 |
GU.SARM.EHZ. | 2019-04-20T08:37:09.50 | 0.1 | undecidable | manual | P | 57 | 46.0206 | 90 | -0.21 | 97 |
MN.VLC.HHZ. | 2019-04-20T08:37:09.08 | 0.1 | undecidable | manual | P | 59 | 43.623 | 90 | -0.15 | 98 |
GU.EQUI.HHZ. | 2019-04-20T08:37:06.65 | 0.1 | undecidable | manual | P | 39 | 29.8479 | 90 | 0.19 | 100 |
IV.PLMA.HHZ. | 2019-04-20T08:37:03.44 | 0.1 | undecidable | manual | P | 334 | 11.2776 | 91 | 0.68 | 90 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.PLMA.HHN. | ML:1.2 | 0.0002769961 | 0.1216 | AML | other | m | 2019-04-20T08:37:05.63 |
IV.PLMA.HHE. | ML:1.2 | 0.0002629802 | 0.1152 | AML | other | m | 2019-04-20T08:37:06.43 |
MN.VLC.HHE. | ML:0.8 | 0.000021782332 | 0.1024 | AML | other | m | 2019-04-20T08:37:13.14 |
MN.VLC.HHN. | ML:0.7 | 0.00001710755 | 0.0832 | AML | other | m | 2019-04-20T08:37:13.40 |