A magnitude ML 1.6 earthquake occured in region: 2 km N Borghetto d'Arroscia (IM), on
and geographic coordinates (lat, lon) 44.0720, 7.9840 at 9 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 |
---|---|---|---|---|
Borghetto d'Arroscia | IM | 2 | 456 | 456 |
Aquila d'Arroscia | IM | 2 | 166 | 622 |
Ranzo | IM | 3 | 557 | 1179 |
Vessalico | IM | 3 | 282 | 1461 |
Alto | CN | 4 | 128 | 1589 |
Caprauna | CN | 5 | 104 | 1693 |
Onzo | SV | 6 | 219 | 1912 |
Armo | IM | 6 | 111 | 2023 |
Pieve di Teco | IM | 6 | 1338 | 3361 |
Nasino | SV | 6 | 207 | 3568 |
Casanova Lerrone | SV | 7 | 749 | 4317 |
Cesio | IM | 7 | 283 | 4600 |
Vendone | SV | 7 | 388 | 4988 |
Testico | SV | 8 | 196 | 5184 |
Castelbianco | SV | 9 | 330 | 5514 |
Ortovero | SV | 9 | 1586 | 7100 |
Pornassio | IM | 9 | 685 | 7785 |
Caravonica | IM | 9 | 282 | 8067 |
Stellanello | SV | 10 | 808 | 8875 |
Arnasco | SV | 10 | 645 | 9520 |
Garlenda | SV | 10 | 1254 | 10774 |
Ormea | CN | 10 | 1617 | 12391 |
Rezzo | IM | 11 | 366 | 12757 |
Chiusanico | IM | 11 | 607 | 13364 |
Aurigo | IM | 11 | 347 | 13711 |
Borgomaro | IM | 11 | 865 | 14576 |
Zuccarello | SV | 12 | 309 | 14885 |
Chiusavecchia | IM | 12 | 577 | 15462 |
Lucinasco | IM | 12 | 272 | 15734 |
Cosio d'Arroscia | IM | 12 | 221 | 15955 |
Erli | SV | 12 | 245 | 16200 |
Castelvecchio di Rocca Barbena | SV | 13 | 145 | 16345 |
Villanova d'Albenga | SV | 13 | 2657 | 19002 |
Cisano sul Neva | SV | 13 | 2085 | 21087 |
Montegrosso Pian Latte | IM | 13 | 118 | 21205 |
Mendatica | IM | 14 | 185 | 21390 |
Villa Faraldi | IM | 15 | 444 | 21834 |
Diano Arentino | IM | 15 | 722 | 22556 |
Garessio | CN | 15 | 3244 | 25800 |
Pontedassio | IM | 15 | 2323 | 28123 |
Carpasio | IM | 16 | 168 | 28291 |
Vasia | IM | 16 | 389 | 28680 |
PrelĂ | IM | 17 | 503 | 29183 |
Balestrino | SV | 17 | 595 | 29778 |
Alassio | SV | 17 | 10934 | 40712 |
Diano San Pietro | IM | 17 | 1145 | 41857 |
Diano Castello | IM | 18 | 2214 | 44071 |
Laigueglia | SV | 18 | 1810 | 45881 |
Andora | SV | 18 | 7552 | 53433 |
Bardineto | SV | 18 | 756 | 54189 |
Dolcedo | IM | 18 | 1415 | 55604 |
San Bartolomeo al Mare | IM | 19 | 3129 | 58733 |
Albenga | SV | 19 | 24213 | 82946 |
Briga Alta | CN | 19 | 39 | 82985 |
Molini di Triora | IM | 19 | 617 | 83602 |
Toirano | SV | 19 | 2644 | 86246 |
Montalto Ligure | IM | 19 | 377 | 86623 |
Cervo | IM | 19 | 1187 | 87810 |
Diano Marina | IM | 20 | 5977 | 93787 |
Triora | IM | 20 | 355 | 94142 |
Priola | CN | 20 | 701 | 94843 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
ML 1.6 | 2021-12-11 20:50:55 |
44.0723 | 7.9835 | 9 | 2022-03-30 13:04:39 |
Bollettino Sismico Italiano INGV | 101410931 |
Reviewed Rev100 |
ML 1.8 | 2021-12-11 20:50:55 |
44.0732 | 7.9878 | 9 | 2021-12-11 20:56:20 |
Sala Sismica INGV-Roma | 98404561 |
Field | Value |
---|---|
Time (UTC) | 2021-12-11 20:50:55 ± 0.09 |
Latitude | 44.0723 ± 0.0054 |
Longitude | 7.9835 ± 0.0075 |
Depth (km) | 9 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | earthquake |
Origin ID | 101410931 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 671 |
Semi-minor axis of confidence ellipse (meter) | 434 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 133 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 670.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 146 |
Number of associated phases, regardless of their use for origin computation | 22 |
Number of defining phases | 22 |
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) | 0.07195 |
Epicentral distance of station farthest from the epicenter (degree) | 0.92001 |
Number of stations at which the event was observed | 12 |
Number of stations from which data was used for origin computation | 12 |
Field | Value |
---|---|
Value | 1.8 |
Uncertainty | 0.3 |
Num. used stations | 18 |
Type of magnitude | ML |
Reference to an origin | 98404561 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-12-11 20:56:20 |
Field | Value |
---|---|
Value | 1.6 |
Uncertainty | 0.3 |
Num. used stations | 23 |
Type of magnitude | ML |
Reference to an origin | 101410931 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2022-02-24 14:28:18 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
GU.BHB.HHZ. | 2021-12-11T20:51:25.35 | 0.3 | undecidable | manual | S | 326 | 102.12 | 50 | -0.33 | 61 |
GU.STV.HHZ. | 2021-12-11T20:51:13.18 | 0.3 | undecidable | manual | S | 290 | 55.6998 | 50 | -0.12 | 69 |
GU.BHB.HHZ. | 2021-12-11T20:51:13.49 | 0.3 | undecidable | manual | P | 326 | 102.12 | 50 | 0.52 | 58 |
GU.ENR.HHZ. | 2021-12-11T20:51:11.36 | 0.3 | undecidable | manual | S | 291 | 48.2184 | 50 | 0.05 | 71 |
GU.BURY.HHE. | 2021-12-11T20:51:10.45 | 0.6 | undecidable | manual | S | 227 | 46.8198 | 50 | -0.48 | 44 |
GU.PCP.HHZ. | 2021-12-11T20:51:08.05 | 0.3 | undecidable | manual | P | 40 | 68.5758 | 50 | 0.25 | 66 |
FR.SAOF.HHZ. | 2021-12-11T20:51:07.27 | 0.3 | undecidable | manual | S | 255 | 35.6421 | 50 | -0.67 | 62 |
GU.STV.HHZ. | 2021-12-11T20:51:06.04 | 0.1 | undecidable | manual | P | 290 | 55.6998 | 50 | 0.22 | 91 |
GU.BURY.HHE. | 2021-12-11T20:51:04.70 | 0.1 | undecidable | manual | P | 227 | 46.8198 | 50 | 0.25 | 92 |
GU.ENR.HHZ. | 2021-12-11T20:51:04.68 | 0.3 | undecidable | manual | P | 291 | 48.2184 | 50 | 0.01 | 72 |
GU.CANO.HHZ. | 2021-12-11T20:51:04.17 | 0.6 | undecidable | manual | S | 53 | 25.1526 | 111 | -0.75 | 41 |
GU.GBOS.HHZ. | 2021-12-11T20:51:03.46 | 0.6 | undecidable | manual | S | 329 | 21.9669 | 113 | -0.44 | 46 |
IV.QLNO.HHZ. | 2021-12-11T20:51:03.43 | 0.1 | undecidable | manual | P | 46 | 40.1265 | 50 | 0.01 | 97 |
GU.IMI.HHZ. | 2021-12-11T20:51:02.54 | 0.6 | undecidable | manual | S | 202 | 19.3695 | 116 | -0.53 | 45 |
FR.SAOF.HHZ. | 2021-12-11T20:51:02.83 | 0.1 | undecidable | manual | P | 255 | 35.6421 | 50 | 0.1 | 96 |
GU.MGRO.HHZ. | 2021-12-11T20:51:01.56 | 0.6 | undecidable | manual | S | 257 | 14.3745 | 123 | 0 | 51 |
GU.CANO.HHZ. | 2021-12-11T20:51:00.98 | 0.1 | positive | manual | P | 53 | 25.1526 | 111 | -0.01 | 100 |
GU.IMI.HHZ. | 2021-12-11T20:51:00.04 | 0.1 | positive | manual | P | 202 | 19.3695 | 116 | 0.13 | 99 |
GU.GBOS.HHZ. | 2021-12-11T20:51:00.58 | 0.1 | negative | manual | P | 329 | 21.9669 | 113 | 0.19 | 97 |
GU.MGRO.HHZ. | 2021-12-11T20:50:59.36 | 0.1 | positive | manual | P | 257 | 14.3745 | 123 | 0.32 | 96 |
GU.RORO.HHZ. | 2021-12-11T20:50:59.47 | 0.6 | undecidable | manual | S | 56 | 7.9809 | 140 | -0.42 | 47 |
GU.RORO.HHZ. | 2021-12-11T20:50:58.27 | 0.1 | negative | manual | P | 56 | 7.9809 | 140 | 0.2 | 99 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
GU.RORO.HHN. | ML:2.0 | 0.001676514 | 0.0768 | AML | other | m | 2021-12-11T20:50:59.64 |
GU.RORO.HHE. | ML:2.4 | 0.00366 | 0.14 | AML | other | m | 2021-12-11T20:50:59.74 |
GU.MGRO.HNN. | ML:1.9 | 0.0007511279 | 0.0896 | AML | other | m | 2021-12-11T20:51:02.34 |
GU.MGRO.HHN. | ML:1.9 | 0.00082622065 | 0.1024 | AML | other | m | 2021-12-11T20:51:02.39 |
GU.IMI.HHE. | ML:2.0 | 0.0007556720999999999 | 0.1152 | AML | other | m | 2021-12-11T20:51:02.76 |
GU.MGRO.HNE. | ML:1.9 | 0.0008608063500000001 | 0.1792 | AML | other | m | 2021-12-11T20:51:02.67 |
GU.MGRO.HHE. | ML:2.0 | 0.000903363 | 0.1792 | AML | other | m | 2021-12-11T20:51:02.67 |
GU.IMI.HHN. | ML:1.9 | 0.00067916565 | 0.1408 | AML | other | m | 2021-12-11T20:51:03.17 |
GU.GBOS.HHE. | ML:1.2 | 0.000101955875 | 0.1536 | AML | other | m | 2021-12-11T20:51:03.71 |
GU.GBOS.HHN. | ML:1.1 | 0.000092056305 | 0.1152 | AML | other | m | 2021-12-11T20:51:04.13 |
GU.CANO.HHN. | ML:1.7 | 0.0003084608 | 0.2176 | AML | other | m | 2021-12-11T20:51:04.35 |
GU.CANO.HHE. | ML:1.7 | 0.0003133637 | 0.1024 | AML | other | m | 2021-12-11T20:51:04.32 |
FR.SAOF.HHN.00 | ML:1.4 | 0.00009415711000000001 | 0.064 | AML | other | m | 2021-12-11T20:51:08.41 |
FR.SAOF.HHE.00 | ML:1.3 | 0.00008665383 | 0.064 | AML | other | m | 2021-12-11T20:51:07.68 |
GU.BHB.HNN. | ML:2.0 | 0.00008709407 | 5.9904 | AML | other | m | 2021-12-11T20:51:31.61 |
GU.ENR.HHN. | ML:1.5 | 0.00008937559 | 0.1024 | AML | other | m | 2021-12-11T20:51:11.71 |
GU.ENR.HHE. | ML:1.4 | 0.00007340916 | 0.0512 | AML | other | m | 2021-12-11T20:51:13.25 |
GU.STV.HHN. | ML:1.0 | 0.000023442745 | 0.1408 | AML | other | m | 2021-12-11T20:51:14.69 |
GU.STV.HHE. | ML:1.2 | 0.000034837446 | 0.64 | AML | other | m | 2021-12-11T20:51:14.05 |
GU.PCP.HHN. | ML:1.2 | 0.000029360820000000003 | 0.2304 | AML | other | m | 2021-12-11T20:51:21.15 |
GU.PCP.HHE. | ML:1.2 | 0.000031172115 | 0.1408 | AML | other | m | 2021-12-11T20:51:19.78 |
GU.BHB.HHE. | ML:1.4 | 0.000024249357500000002 | 0.1792 | AML | other | m | 2021-12-11T20:51:26.57 |
GU.BHB.HHN. | ML:1.4 | 0.000023702704999999996 | 0.2944 | AML | other | m | 2021-12-11T20:51:25.84 |