A magnitude ML 0.6 earthquake occured in region: Costa Ligure Occidentale (Imperia), on
and geographic coordinates (lat, lon) 44.0230, 7.6380 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 |
---|---|---|---|---|
Pigna | IM | 10 | 859 | 859 |
Triora | IM | 11 | 355 | 1214 |
Castel Vittorio | IM | 11 | 287 | 1501 |
Briga Alta | CN | 11 | 39 | 1540 |
Molini di Triora | IM | 12 | 617 | 2157 |
Bajardo | IM | 15 | 312 | 2469 |
Mendatica | IM | 15 | 185 | 2654 |
Rocchetta Nervina | IM | 15 | 298 | 2952 |
Montegrosso Pian Latte | IM | 15 | 118 | 3070 |
Isolabona | IM | 16 | 679 | 3749 |
Apricale | IM | 16 | 629 | 4378 |
Cosio d'Arroscia | IM | 17 | 221 | 4599 |
Perinaldo | IM | 18 | 870 | 5469 |
Airole | IM | 18 | 407 | 5876 |
Olivetta San Michele | IM | 19 | 211 | 6087 |
Rezzo | IM | 19 | 366 | 6453 |
Ceriana | IM | 19 | 1250 | 7703 |
Dolceacqua | IM | 19 | 2074 | 9777 |
Pornassio | IM | 20 | 685 | 10462 |
Montalto Ligure | IM | 20 | 377 | 10839 |
Carpasio | IM | 20 | 168 | 11007 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 0.6 | 2021-08-22 02:41:23 |
44.0228 | 7.6377 | 9 | 2021-08-22 03:31:59 |
Sala Sismica INGV-Roma | 94483191 |
Field | Value |
---|---|
Time (UTC) | 2021-08-22 02:41:23 ± 0.1 |
Latitude | 44.0228 ± 0.0054 |
Longitude | 7.6377 ± 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 | 94483191 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 537 |
Semi-minor axis of confidence ellipse (meter) | 402 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 86 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 540.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 76 |
Number of associated phases, regardless of their use for origin computation | 16 |
Number of defining phases | 16 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.31 |
Epicentral distance of station closest to the epicenter (degree) | 0.07105 |
Epicentral distance of station farthest from the epicenter (degree) | 0.32106 |
Number of stations at which the event was observed | 8 |
Number of stations from which data was used for origin computation | 8 |
Field | Value |
---|---|
Value | 0.6 |
Uncertainty | 0.3 |
Num. used stations | 18 |
Type of magnitude | ML |
Reference to an origin | 94483191 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-08-22 03:31:59 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
GU.STV.HHZ. | 2021-08-22T02:41:35.68 | 0.3 | undecidable | manual | S | 315 | 34.9428 | 50 | -0.47 | 65 |
GU.RORO.HHZ. | 2021-08-22T02:41:35.86 | 0.3 | undecidable | manual | S | 74 | 35.6421 | 50 | -0.46 | 66 |
GU.GBOS.HHZ. | 2021-08-22T02:41:34.30 | 0.3 | undecidable | manual | S | 33 | 29.1486 | 108 | -0.23 | 70 |
GU.BURY.HHZ. | 2021-08-22T02:41:34.02 | 0.3 | undecidable | manual | S | 194 | 27.4503 | 109 | 0.04 | 73 |
GU.ENR.HHZ. | 2021-08-22T02:41:34.21 | 0.3 | undecidable | manual | S | 323 | 28.8489 | 108 | -0.22 | 70 |
GU.IMI.HHZ. | 2021-08-22T02:41:32.42 | 0.3 | undecidable | manual | S | 121 | 23.8539 | 111 | -0.4 | 68 |
GU.STV.HHZ. | 2021-08-22T02:41:31.38 | 0.3 | undecidable | manual | P | 315 | 34.9428 | 50 | 0.39 | 67 |
GU.RORO.HHZ. | 2021-08-22T02:41:31.36 | 0.3 | undecidable | manual | P | 74 | 35.6421 | 50 | 0.28 | 68 |
GU.ENR.HHZ. | 2021-08-22T02:41:30.46 | 0.3 | undecidable | manual | P | 323 | 28.8489 | 108 | 0.46 | 66 |
GU.GBOS.HHZ. | 2021-08-22T02:41:30.44 | 0.3 | undecidable | manual | P | 33 | 29.1486 | 108 | 0.39 | 67 |
GU.MGRO.HHZ. | 2021-08-22T02:41:29.67 | 0.3 | undecidable | manual | S | 81 | 13.7751 | 124 | -0.01 | 75 |
GU.IMI.HHZ. | 2021-08-22T02:41:29.20 | 0.3 | undecidable | manual | P | 121 | 23.8539 | 111 | 0.13 | 72 |
GU.BURY.HHZ. | 2021-08-22T02:41:29.96 | 0.3 | undecidable | manual | P | 194 | 27.4503 | 109 | 0.23 | 70 |
GU.MGRO.HHZ. | 2021-08-22T02:41:27.56 | 0.3 | undecidable | manual | P | 81 | 13.7751 | 124 | 0.31 | 70 |
FR.SAOF.HHZ.00 | 2021-08-22T02:41:27.62 | 0.3 | undecidable | manual | S | 239 | 7.881 | 139 | -0.52 | 68 |
FR.SAOF.HHZ.00 | 2021-08-22T02:41:26.41 | 0.1 | undecidable | manual | P | 239 | 7.881 | 139 | 0.04 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
FR.SAOF.HHE.00 | ML:0.7 | 0.00006984591500000001 | 0.1808 | AML | other | m | 2021-08-22T02:41:27.69 |
FR.SAOF.HHN.00 | ML:0.7 | 0.00007545167499999999 | 0.2 | AML | other | m | 2021-08-22T02:41:28.69 |
GU.MGRO.HHN. | ML:0.2 | 0.000017210275000000002 | 0.16 | AML | other | m | 2021-08-22T02:41:29.98 |
GU.MGRO.HHE. | ML:0.3 | 0.000019306595 | 0.2992 | AML | other | m | 2021-08-22T02:41:31.33 |
GU.ENR.HHE. | ML:0.6 | 0.00001754 | 0.16 | AML | other | m | 2021-08-22T02:41:34.49 |
GU.ENR.HHN. | ML:0.6 | 0.000020237101 | 0.16 | AML | other | m | 2021-08-22T02:41:34.49 |
GU.MGRO.HNE. | ML:0.9 | 0.00008243134 | 1.4496 | AML | other | m | 2021-08-22T02:41:29.67 |
GU.MGRO.HNN. | ML:0.8 | 0.00006632735500000001 | 1.72 | AML | other | m | 2021-08-22T02:41:29.55 |
GU.IMI.HHE. | ML:0.6 | 0.000022841455 | 0.2 | AML | other | m | 2021-08-22T02:41:33.62 |
GU.IMI.HHN. | ML:0.6 | 0.0000236528105 | 0.1792 | AML | other | m | 2021-08-22T02:41:33.22 |
GU.BURY.HHE. | ML:0.6 | 0.00001851838 | 0.7392 | AML | other | m | 2021-08-22T02:41:34.72 |
GU.BURY.HHN. | ML:0.4 | 0.000012675865000000001 | 0.2112 | AML | other | m | 2021-08-22T02:41:34.21 |
GU.BURY.HNE. | ML:1.1 | 0.000064252125 | 1.2288 | AML | other | m | 2021-08-22T02:41:35.31 |
GU.BURY.HNN. | ML:0.9 | 0.000038316780000000004 | 1.2512 | AML | other | m | 2021-08-22T02:41:34.77 |
GU.GBOS.HHE. | ML:0.0 | 0.0000067471435 | 0.1008 | AML | other | m | 2021-08-22T02:41:34.58 |
GU.GBOS.HHN. | ML:0.0 | 0.000006491328499999999 | 0.0992 | AML | other | m | 2021-08-22T02:41:34.68 |
GU.STV.HHE. | ML:0.4 | 0.00001182459 | 0.2 | AML | other | m | 2021-08-22T02:41:36.51 |
GU.STV.HHN. | ML:0.4 | 0.0000118666015 | 0.28 | AML | other | m | 2021-08-22T02:41:36.62 |