A magnitude ML 0.9 earthquake occured in region: Costa Ligure Occidentale (Imperia), on
and geographic coordinates (lat, lon) 44.0190, 7.6340 at 10 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 |
---|---|---|---|---|
Pigna | IM | 10 | 859 | 859 |
Castel Vittorio | IM | 10 | 287 | 1146 |
Triora | IM | 11 | 355 | 1501 |
Molini di Triora | IM | 12 | 617 | 2118 |
Briga Alta | CN | 12 | 39 | 2157 |
Bajardo | IM | 14 | 312 | 2469 |
Rocchetta Nervina | IM | 15 | 298 | 2767 |
Mendatica | IM | 15 | 185 | 2952 |
Isolabona | IM | 15 | 679 | 3631 |
Apricale | IM | 15 | 629 | 4260 |
Montegrosso Pian Latte | IM | 16 | 118 | 4378 |
Cosio d'Arroscia | IM | 17 | 221 | 4599 |
Perinaldo | IM | 17 | 870 | 5469 |
Airole | IM | 17 | 407 | 5876 |
Olivetta San Michele | IM | 18 | 211 | 6087 |
Dolceacqua | IM | 19 | 2074 | 8161 |
Ceriana | IM | 19 | 1250 | 9411 |
Rezzo | IM | 19 | 366 | 9777 |
Montalto Ligure | IM | 20 | 377 | 10154 |
Carpasio | IM | 20 | 168 | 10322 |
Pornassio | IM | 20 | 685 | 11007 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 0.9 | 2021-08-22 01:00:14 |
44.019 | 7.6343 | 10 | 2021-08-22 01:07:26 |
Sala Sismica INGV-Roma | 94479651 |
Field | Value |
---|---|
Time (UTC) | 2021-08-22 01:00:14 ± 0.09 |
Latitude | 44.0190 ± 0.0081 |
Longitude | 7.6343 ± 0.0063 |
Depth (km) | 10 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 94479651 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 808 |
Semi-minor axis of confidence ellipse (meter) | 509 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 177 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 810.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 75 |
Number of associated phases, regardless of their use for origin computation | 17 |
Number of defining phases | 17 |
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) | 0.06745 |
Epicentral distance of station farthest from the epicenter (degree) | 0.47214 |
Number of stations at which the event was observed | 9 |
Number of stations from which data was used for origin computation | 9 |
Field | Value |
---|---|
Value | 0.9 |
Uncertainty | 0.2 |
Num. used stations | 22 |
Type of magnitude | ML |
Reference to an origin | 94479651 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-08-22 01:07:26 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
GU.STV.HHZ. | 2021-08-22T01:00:26.52 | 0.3 | undecidable | manual | S | 316 | 35.0427 | 50 | -0.39 | 67 |
GU.RORO.HHZ. | 2021-08-22T01:00:26.69 | 0.3 | undecidable | manual | S | 73 | 35.9418 | 50 | -0.46 | 66 |
GU.GBOS.HHZ. | 2021-08-22T01:00:25.10 | 0.3 | undecidable | manual | S | 33 | 29.6481 | 50 | -0.36 | 68 |
GU.ENR.HHZ. | 2021-08-22T01:00:24.99 | 0.3 | undecidable | manual | S | 324 | 29.0487 | 50 | -0.3 | 69 |
GU.CANO.HHZ. | 2021-08-22T01:00:24.89 | 0.3 | undecidable | manual | P | 66 | 52.4031 | 50 | 0.46 | 64 |
GU.BURY.HHZ. | 2021-08-22T01:00:24.57 | 0.3 | undecidable | manual | S | 193 | 26.9508 | 109 | -0.08 | 73 |
GU.IMI.HHZ. | 2021-08-22T01:00:23.28 | 0.3 | undecidable | manual | S | 120 | 23.9538 | 112 | -0.38 | 69 |
GU.STV.HHZ. | 2021-08-22T01:00:22.11 | 0.1 | undecidable | manual | P | 316 | 35.0427 | 50 | 0.34 | 91 |
GU.RORO.HHZ. | 2021-08-22T01:00:22.09 | 0.3 | undecidable | manual | P | 73 | 35.9418 | 50 | 0.18 | 70 |
GU.ENR.HHZ. | 2021-08-22T01:00:21.14 | 0.3 | undecidable | manual | P | 324 | 29.0487 | 50 | 0.31 | 69 |
GU.GBOS.HHZ. | 2021-08-22T01:00:21.24 | 0.3 | undecidable | manual | P | 33 | 29.6481 | 50 | 0.31 | 69 |
GU.BURY.HHZ. | 2021-08-22T01:00:20.63 | 0.3 | undecidable | manual | P | 193 | 26.9508 | 109 | 0.17 | 71 |
GU.MGRO.HHZ. | 2021-08-22T01:00:20.55 | 0.3 | undecidable | manual | S | 79 | 14.0748 | 124 | -0.09 | 74 |
GU.IMI.HHZ. | 2021-08-22T01:00:19.98 | 0.1 | undecidable | manual | P | 120 | 23.9538 | 112 | 0.09 | 97 |
FR.SAOF.HHZ.00 | 2021-08-22T01:00:18.50 | 0.3 | undecidable | manual | S | 241 | 7.4814 | 142 | -0.42 | 70 |
GU.MGRO.HHZ. | 2021-08-22T01:00:18.39 | 0.1 | undecidable | manual | P | 79 | 14.0748 | 124 | 0.25 | 96 |
FR.SAOF.HHZ.00 | 2021-08-22T01:00:17.25 | 0.1 | undecidable | manual | P | 241 | 7.4814 | 142 | 0.1 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
FR.SAOF.HHE.00 | ML:1.1 | 0.00018586475 | 0.18 | AML | other | m | 2021-08-22T01:00:18.50 |
FR.SAOF.HHN.00 | ML:1.2 | 0.00025097895 | 0.22 | AML | other | m | 2021-08-22T01:00:19.38 |
GU.MGRO.HHN. | ML:0.9 | 0.00008442490999999999 | 0.82 | AML | other | m | 2021-08-22T01:00:21.03 |
GU.MGRO.HHE. | ML:0.6 | 0.0000392517 | 0.5 | AML | other | m | 2021-08-22T01:00:21.41 |
GU.IMI.HHE. | ML:1.0 | 0.00006027219 | 0.16 | AML | other | m | 2021-08-22T01:00:23.73 |
GU.BURY.HHN. | ML:0.7 | 0.00003031847 | 0.1904 | AML | other | m | 2021-08-22T01:00:25.03 |
GU.IMI.HHN. | ML:1.1 | 0.00008314820000000001 | 0.56 | AML | other | m | 2021-08-22T01:00:24.03 |
GU.ENR.HHN. | ML:1.0 | 0.00005484104 | 0.14 | AML | other | m | 2021-08-22T01:00:25.28 |
GU.ENR.HHE. | ML:1.0 | 0.00005070747 | 0.16 | AML | other | m | 2021-08-22T01:00:25.28 |
GU.GBOS.HHE. | ML:0.6 | 0.000021378189999999997 | 0.12 | AML | other | m | 2021-08-22T01:00:25.38 |
GU.GBOS.HHN. | ML:0.6 | 0.000020900000000000003 | 0.1 | AML | other | m | 2021-08-22T01:00:25.48 |
GU.BURY.HHE. | ML:0.9 | 0.000045498445 | 0.3504 | AML | other | m | 2021-08-22T01:00:25.16 |
GU.STV.HHE. | ML:1.0 | 0.000037699999999999995 | 0.22 | AML | other | m | 2021-08-22T01:00:27.30 |
GU.STV.HHN. | ML:0.9 | 0.000035449999999999994 | 0.2 | AML | other | m | 2021-08-22T01:00:27.42 |
GU.MGRO.HNE. | ML:0.7 | 0.00004805574 | 0.32 | AML | other | m | 2021-08-22T01:00:21.83 |
GU.MGRO.HNN. | ML:0.8 | 0.00007089165 | 0.78 | AML | other | m | 2021-08-22T01:00:21.03 |
GU.BURY.HNE. | ML:1.0 | 0.00005532597 | 0.8304 | AML | other | m | 2021-08-22T01:00:25.12 |
GU.BURY.HNN. | ML:1.1 | 0.00007190183 | 0.5 | AML | other | m | 2021-08-22T01:00:25.41 |
GU.RORO.HHE. | ML:2.0 | 0.00042808704999999997 | 2.68 | AML | other | m | 2021-08-22T01:00:26.64 |
GU.RORO.HHN. | ML:0.6 | 0.000015226594999999999 | 0.14 | AML | other | m | 2021-08-22T01:00:27.12 |
GU.CANO.HHE. | ML:1.4 | 0.00005283364 | 0.86 | AML | other | m | 2021-08-22T01:00:31.13 |
GU.CANO.HHN. | ML:1.0 | 0.000022634109999999998 | 0.26 | AML | other | m | 2021-08-22T01:00:33.39 |