A magnitude ML 0.9 earthquake occured in region: 1 km NE Santo Stefano di Magra (SP), on
and geographic coordinates (lat, lon) 44.1700, 9.9230 at 9 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 |
---|---|---|---|---|
Santo Stefano di Magra | SP | 1 | 9360 | 9360 |
Bolano | SP | 3 | 7813 | 17173 |
Vezzano Ligure | SP | 4 | 7356 | 24529 |
Podenzana | MS | 4 | 2180 | 26709 |
Follo | SP | 5 | 6337 | 33046 |
Aulla | MS | 6 | 11263 | 44309 |
Arcola | SP | 6 | 10607 | 54916 |
Sarzana | SP | 7 | 21976 | 76892 |
Tresana | MS | 8 | 2044 | 78936 |
Fosdinovo | MS | 9 | 4883 | 83819 |
La Spezia | SP | 10 | 93959 | 177778 |
Lerici | SP | 10 | 10228 | 188006 |
Calice al Cornoviglio | SP | 11 | 1138 | 189144 |
Castelnuovo Magra | SP | 11 | 8415 | 197559 |
Ameglia | SP | 12 | 4365 | 201924 |
Beverino | SP | 13 | 2429 | 204353 |
Riccò del Golfo di Spezia | SP | 13 | 3698 | 208051 |
Ortonovo | SP | 13 | 8277 | 216328 |
Villafranca in Lunigiana | MS | 14 | 4770 | 221098 |
Licciana Nardi | MS | 14 | 4949 | 226047 |
Portovenere | SP | 14 | 3630 | 229677 |
Pignone | SP | 16 | 565 | 230242 |
Rocchetta di Vara | SP | 16 | 703 | 230945 |
Riomaggiore | SP | 17 | 1576 | 232521 |
Mulazzo | MS | 17 | 2424 | 234945 |
Borghetto di Vara | SP | 17 | 938 | 235883 |
Carrara | MS | 17 | 63133 | 299016 |
Bagnone | MS | 17 | 1887 | 300903 |
Brugnato | SP | 17 | 1270 | 302173 |
Fivizzano | MS | 18 | 7925 | 310098 |
Filattiera | MS | 18 | 2309 | 312407 |
Zignago | SP | 19 | 532 | 312939 |
Vernazza | SP | 19 | 848 | 313787 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 0.9 | 2021-04-02 10:16:43 |
44.1698 | 9.9232 | 9 | 2021-04-02 10:28:36 |
Sala Sismica INGV-Roma | 88707231 |
Field | Value |
---|---|
Time (UTC) | 2021-04-02 10:16:43 ± 0.1 |
Latitude | 44.1698 ± 0.0072 |
Longitude | 9.9232 ± 0.0063 |
Depth (km) | 9 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 88707231 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 746 |
Semi-minor axis of confidence ellipse (meter) | 451 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 166 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 750.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 111 |
Number of associated phases, regardless of their use for origin computation | 19 |
Number of defining phases | 14 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.28 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.62773 |
Number of stations at which the event was observed | 12 |
Number of stations from which data was used for origin computation | 7 |
Field | Value |
---|---|
Value | 0.9 |
Uncertainty | 0.3 |
Num. used stations | 10 |
Type of magnitude | ML |
Reference to an origin | 88707231 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-04-02 10:28:36 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IT.RMMM.HGZ. | 2021-04-02T10:18:11.80 | 3.0 | undecidable | manual | Sg | 0.4 | 0 | |||
IV.CESX.HHZ. | 2021-04-02T10:18:02.94 | 3.0 | undecidable | manual | Sg | 2.29 | 0 | |||
IV.ZEN8.EHZ. | 2021-04-02T10:17:35.04 | 3.0 | undecidable | manual | S | 1.71 | 0 | |||
IV.ZONE.HHZ. | 2021-04-02T10:17:32.24 | 3.0 | undecidable | manual | S | -1.46 | 0 | |||
IV.RIBO.EHZ.01 | 2021-04-02T10:17:31.39 | 3.0 | undecidable | manual | S | -4.98 | 0 | |||
GU.GORR.HHE. | 2021-04-02T10:17:05.55 | 0.6 | undecidable | manual | S | 314 | 69.6747 | 50 | 0.25 | 45 |
IV.BDI.HHZ. | 2021-04-02T10:17:01.32 | 0.6 | undecidable | manual | S | 102 | 54.8007 | 50 | -0.03 | 48 |
GU.CARD.HHZ. | 2021-04-02T10:16:58.86 | 0.6 | undecidable | manual | S | 110 | 47.3193 | 50 | -0.48 | 44 |
GU.GORR.HHE. | 2021-04-02T10:16:56.50 | 0.3 | undecidable | manual | P | 314 | 69.6747 | 50 | 0.27 | 67 |
IV.MSSA.HHZ. | 2021-04-02T10:16:55.96 | 0.3 | undecidable | manual | S | 297 | 36.1416 | 50 | -0.39 | 69 |
IV.BDI.HHZ. | 2021-04-02T10:16:54.37 | 0.6 | negative | manual | P | 102 | 54.8007 | 50 | 0.42 | 44 |
GU.CARD.HHZ. | 2021-04-02T10:16:53.04 | 0.1 | undecidable | manual | P | 110 | 47.3193 | 50 | 0.25 | 93 |
IV.MSSA.HHZ. | 2021-04-02T10:16:50.85 | 0.1 | undecidable | manual | P | 297 | 36.1416 | 50 | -0.21 | 96 |
GU.EQUI.HHZ. | 2021-04-02T10:16:50.58 | 0.1 | undecidable | manual | S | 91 | 18.2706 | 117 | -0.37 | 95 |
GU.FIVI.HNZ. | 2021-04-02T10:16:50.90 | 0.3 | undecidable | manual | S | 65 | 17.9709 | 117 | 0.05 | 77 |
IV.PLMA.HHZ. | 2021-04-02T10:16:49.60 | 0.1 | undecidable | manual | S | 203 | 14.4744 | 123 | -0.18 | 100 |
GU.EQUI.HHZ. | 2021-04-02T10:16:48.29 | 0.1 | undecidable | manual | P | 91 | 18.2706 | 117 | 0.34 | 96 |
IV.PLMA.HHZ. | 2021-04-02T10:16:47.55 | 0.1 | undecidable | manual | P | 203 | 14.4744 | 123 | 0.28 | 98 |
GU.FIVI.HNZ. | 2021-04-02T10:16:47.74 | 0.3 | undecidable | manual | P | 65 | 17.9709 | 117 | -0.15 | 75 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
GU.EQUI.HHE. | ML:0.8 | 0.000049721525 | 0.1152 | AML | other | m | 2021-04-02T10:16:50.73 |
GU.EQUI.HHN. | ML:0.4 | 0.0000223 | 1.7 | AML | other | m | 2021-04-02T10:16:50.87 |
GU.CARD.HHN. | ML:1.2 | 0.000039750000000000004 | 0.28 | AML | other | m | 2021-04-02T10:16:59.57 |
GU.CARD.HHE. | ML:1.2 | 0.0000468 | 0.14 | AML | other | m | 2021-04-02T10:16:59.78 |
IV.PLMA.HHE. | ML:0.6 | 0.00004269519 | 0.1408 | AML | other | m | 2021-04-02T10:16:49.67 |
IV.PLMA.HHN. | ML:0.8 | 0.00006764076499999999 | 0.0768 | AML | other | m | 2021-04-02T10:16:49.77 |
IV.BDI.HHE. | ML:0.6 | 0.000010718419499999999 | 0.16 | AML | other | m | 2021-04-02T10:17:01.99 |
IV.BDI.HHN. | ML:0.6 | 0.000010551186 | 0.2176 | AML | other | m | 2021-04-02T10:17:02.68 |
IV.BDI.HNE. | ML:1.1 | 0.000030492250000000003 | 0.352 | AML | other | m | 2021-04-02T10:17:01.55 |
IV.BDI.HNN. | ML:1.2 | 0.000039072365 | 0.7232 | AML | other | m | 2021-04-02T10:17:02.25 |