A magnitude ML 0.7 (quarry blast) earthquake occured in region: 2 km NE Arnasco (SV), on
and geographic coordinates (lat, lon) 44.0920, 8.1200 at 0 km depth.
The earthquake was located by: Bollettino Sismico Italiano INGV.
Event type: quarry blast.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 |
---|---|---|---|---|
Arnasco | SV | 2 | 645 | 645 |
Cisano sul Neva | SV | 2 | 2085 | 2730 |
Zuccarello | SV | 2 | 309 | 3039 |
Vendone | SV | 4 | 388 | 3427 |
Castelbianco | SV | 4 | 330 | 3757 |
Castelvecchio di Rocca Barbena | SV | 4 | 145 | 3902 |
Ortovero | SV | 5 | 1586 | 5488 |
Erli | SV | 5 | 245 | 5733 |
Villanova d'Albenga | SV | 5 | 2657 | 8390 |
Balestrino | SV | 6 | 595 | 8985 |
Onzo | SV | 6 | 219 | 9204 |
Garlenda | SV | 7 | 1254 | 10458 |
Nasino | SV | 8 | 207 | 10665 |
Toirano | SV | 8 | 2644 | 13309 |
Casanova Lerrone | SV | 9 | 749 | 14058 |
Albenga | SV | 9 | 24213 | 38271 |
Ceriale | SV | 9 | 5561 | 43832 |
Aquila d'Arroscia | IM | 9 | 166 | 43998 |
Ranzo | IM | 9 | 557 | 44555 |
Alto | CN | 9 | 128 | 44683 |
Boissano | SV | 9 | 2492 | 47175 |
Borghetto Santo Spirito | SV | 10 | 4948 | 52123 |
Alassio | SV | 10 | 10934 | 63057 |
Bardineto | SV | 11 | 756 | 63813 |
Stellanello | SV | 11 | 808 | 64621 |
Borghetto d'Arroscia | IM | 12 | 456 | 65077 |
Testico | SV | 12 | 196 | 65273 |
Loano | SV | 12 | 11407 | 76680 |
Laigueglia | SV | 13 | 1810 | 78490 |
Caprauna | CN | 13 | 104 | 78594 |
Vessalico | IM | 14 | 282 | 78876 |
Giustenice | SV | 14 | 977 | 79853 |
Garessio | CN | 14 | 3244 | 83097 |
Villa Faraldi | IM | 14 | 444 | 83541 |
Pietra Ligure | SV | 15 | 8992 | 92533 |
Cesio | IM | 15 | 283 | 92816 |
Andora | SV | 15 | 7552 | 100368 |
Tovo San Giacomo | SV | 15 | 2582 | 102950 |
Magliolo | SV | 15 | 974 | 103924 |
Calizzano | SV | 16 | 1475 | 105399 |
Armo | IM | 16 | 111 | 105510 |
Borgio Verezzi | SV | 17 | 2205 | 107715 |
Chiusanico | IM | 17 | 607 | 108322 |
Caravonica | IM | 17 | 282 | 108604 |
Pieve di Teco | IM | 17 | 1338 | 109942 |
Diano Arentino | IM | 17 | 722 | 110664 |
Chiusavecchia | IM | 18 | 577 | 111241 |
Ormea | CN | 18 | 1617 | 112858 |
San Bartolomeo al Mare | IM | 18 | 3129 | 115987 |
Diano San Pietro | IM | 18 | 1145 | 117132 |
Cervo | IM | 18 | 1187 | 118319 |
Lucinasco | IM | 19 | 272 | 118591 |
Pontedassio | IM | 19 | 2323 | 120914 |
Calice Ligure | SV | 19 | 1730 | 122644 |
Priola | CN | 19 | 701 | 123345 |
Rialto | SV | 19 | 564 | 123909 |
Diano Castello | IM | 19 | 2214 | 126123 |
Borgomaro | IM | 19 | 865 | 126988 |
Aurigo | IM | 20 | 347 | 127335 |
Finale Ligure | SV | 20 | 11711 | 139046 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
ML 0.7 | 2021-12-13 10:20:25 |
44.0922 | 8.1203 | 1 | 2022-03-30 13:04:33 |
Bollettino Sismico Italiano INGV | 100404071 |
Reviewed Rev100 |
ML 0.7 | 2021-12-13 10:20:25 |
44.1063 | 8.1113 | 6 | 2021-12-13 10:34:28 |
Sala Sismica INGV-Roma | 98459891 |
Field | Value |
---|---|
Time (UTC) | 2021-12-13 10:20:25 ± 0.19 |
Latitude | 44.0922 ± 0.0117 |
Longitude | 8.1203 ± 0.0150 |
Depth (km) | 1 (operator assigned) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | quarry blast |
Origin ID | 100404071 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1570 |
Semi-minor axis of confidence ellipse (meter) | 800 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 321 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1570.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 186 |
Number of associated phases, regardless of their use for origin computation | 6 |
Number of defining phases | 6 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.29 |
Epicentral distance of station closest to the epicenter (degree) | 0.04317 |
Epicentral distance of station farthest from the epicenter (degree) | 0.28239 |
Number of stations at which the event was observed | 6 |
Number of stations from which data was used for origin computation | 6 |
Field | Value |
---|---|
Value | 0.7 |
Uncertainty | 0.1 |
Num. used stations | 6 |
Type of magnitude | ML |
Reference to an origin | 100404071 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2022-01-31 13:30:01 |
Field | Value |
---|---|
Value | 0.7 |
Uncertainty | 0.1 |
Num. used stations | 6 |
Type of magnitude | ML |
Reference to an origin | 98459891 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-12-13 10:34:28 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.QLNO.HHZ. | 2021-12-13T10:20:31.68 | 0.3 | undecidable | manual | P | 35 | 31.3464 | 91 | -0.29 | 70 |
GU.IMI.HHZ. | 2021-12-13T10:20:31.12 | 0.1 | undecidable | manual | P | 222 | 27.1506 | 91 | 0.01 | 100 |
GU.GBOS.HHZ. | 2021-12-13T10:20:30.99 | 0.1 | undecidable | manual | P | 307 | 27.8499 | 91 | -0.26 | 95 |
GU.MGRO.HHZ. | 2021-12-13T10:20:30.72 | 0.1 | undecidable | manual | P | 258 | 25.4523 | 91 | -0.07 | 99 |
GU.CANO.HHZ. | 2021-12-13T10:20:29.06 | 0.1 | undecidable | manual | P | 36 | 15.7731 | 92 | 0.21 | 98 |
GU.RORO.HHZ. | 2021-12-13T10:20:26.96 | 0.1 | undecidable | manual | P | 298 | 4.7952 | 96 | 0.31 | 98 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
GU.CANO.HHN. | ML:0.8 | 0.00006735293 | 0.32 | AML | other | m | 2021-12-13T10:20:31.44 |
GU.CANO.HHE. | ML:0.8 | 0.00006816862999999999 | 0.32 | AML | other | m | 2021-12-13T10:20:31.57 |
GU.MGRO.HHN. | ML:0.6 | 0.000025093318999999998 | 0.1984 | AML | other | m | 2021-12-13T10:20:35.54 |
GU.MGRO.HHE. | ML:0.5 | 0.00001903369 | 0.1984 | AML | other | m | 2021-12-13T10:20:35.56 |
GU.IMI.HHN. | ML:0.8 | 0.000033779655 | 0.1024 | AML | other | m | 2021-12-13T10:20:35.82 |
GU.IMI.HHE. | ML:0.6 | 0.000027361099999999998 | 0.2176 | AML | other | m | 2021-12-13T10:20:35.71 |