A magnitude ML 1.0 earthquake occured in region: Costa Ligure Occidentale (Imperia), on
and geographic coordinates (lat, lon) 43.7670, 7.6900 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 |
---|---|---|---|---|
Bordighera | IM | 2 | 10469 | 10469 |
Ospedaletti | IM | 5 | 3367 | 13836 |
Vallecrosia | IM | 5 | 6956 | 20792 |
Vallebona | IM | 6 | 1310 | 22102 |
San Biagio della Cima | IM | 7 | 1329 | 23431 |
Seborga | IM | 7 | 315 | 23746 |
Ventimiglia | IM | 7 | 24310 | 48056 |
Soldano | IM | 7 | 977 | 49033 |
Camporosso | IM | 7 | 5632 | 54665 |
Sanremo | IM | 10 | 54807 | 109472 |
Dolceacqua | IM | 11 | 2074 | 111546 |
Perinaldo | IM | 11 | 870 | 112416 |
Apricale | IM | 13 | 629 | 113045 |
Isolabona | IM | 13 | 679 | 113724 |
Ceriana | IM | 15 | 1250 | 114974 |
Bajardo | IM | 16 | 312 | 115286 |
Rocchetta Nervina | IM | 16 | 298 | 115584 |
Taggia | IM | 16 | 14116 | 129700 |
Airole | IM | 16 | 407 | 130107 |
Riva Ligure | IM | 17 | 2910 | 133017 |
Castellaro | IM | 18 | 1256 | 134273 |
Castel Vittorio | IM | 18 | 287 | 134560 |
Santo Stefano al Mare | IM | 19 | 2197 | 136757 |
Pompeiana | IM | 19 | 823 | 137580 |
Pigna | IM | 19 | 859 | 138439 |
Olivetta San Michele | IM | 19 | 211 | 138650 |
Terzorio | IM | 19 | 216 | 138866 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.0 | 2023-04-20 14:50:00 |
43.7667 | 7.6903 | 9 | 2023-04-20 15:02:59 |
Sala Sismica INGV-Roma | 116553251 |
Field | Value |
---|---|
Time (UTC) | 2023-04-20 14:50:00 ± 0.17 |
Latitude | 43.7667 ± 0.0090 |
Longitude | 7.6903 ± 0.0062 |
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 | 116553251 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1001 |
Semi-minor axis of confidence ellipse (meter) | 447 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 168 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1000.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 234 |
Number of associated phases, regardless of their use for origin computation | 22 |
Number of defining phases | 15 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.22 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.54499 |
Number of stations at which the event was observed | 15 |
Number of stations from which data was used for origin computation | 8 |
Field | Value |
---|---|
Value | 1.0 |
Uncertainty | 0.2 |
Num. used stations | 9 |
Type of magnitude | ML |
Reference to an origin | 116553251 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2023-04-20 15:02:59 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.MSRU.HHZ. | 2023-04-20T14:51:56.35 | 3.0 | positive | manual | Pn | -3.28 | 0 | |||
IV.IMOL.HNZ. | 2023-04-20T14:51:37.57 | 3.0 | undecidable | manual | Sg | 7.8 | 0 | |||
IV.GIUL.HHZ. | 2023-04-20T14:51:19.83 | 3.0 | negative | manual | Pg | 6.81 | 0 | |||
IV.RIBO.EHZ.01 | 2023-04-20T14:51:18.58 | 3.0 | undecidable | manual | Sg | -0.85 | 0 | |||
IV.CSP1.EHZ. | 2023-04-20T14:51:10.79 | 3.0 | undecidable | manual | Pg | 5.48 | 0 | |||
IV.SSFR.HHZ. | 2023-04-20T14:51:03.50 | 3.0 | undecidable | manual | Pn | 3.08 | 0 | |||
IV.GUMA.HHZ. | 2023-04-20T14:51:03.49 | 3.0 | positive | manual | Pn | -3.19 | 0 | |||
GU.STV.HHZ. | 2023-04-20T14:50:19.49 | 0.3 | undecidable | manual | S | 331 | 60.495 | 50 | 0.02 | 70 |
GU.GBOS.HHZ. | 2023-04-20T14:50:17.79 | 0.3 | undecidable | manual | S | 13 | 54.0015 | 50 | 0.05 | 70 |
GU.RORO.HHZ. | 2023-04-20T14:50:15.79 | 0.3 | undecidable | manual | S | 38 | 48.7179 | 50 | -0.54 | 64 |
GU.MGRO.HHZ. | 2023-04-20T14:50:11.83 | 0.1 | undecidable | manual | S | 17 | 32.0457 | 50 | -0.04 | 98 |
GU.STV.HHZ. | 2023-04-20T14:50:11.60 | 0.3 | undecidable | manual | P | 331 | 60.495 | 50 | 0.2 | 67 |
GU.GBOS.HHZ. | 2023-04-20T14:50:11.15 | 0.6 | undecidable | manual | P | 13 | 54.0015 | 50 | 0.75 | 39 |
GU.ENR.HHZ. | 2023-04-20T14:50:10.51 | 0.6 | undecidable | manual | P | 337 | 55.6998 | 50 | -0.15 | 46 |
FR.SAOF.HHZ.00 | 2023-04-20T14:50:10.24 | 0.3 | undecidable | manual | S | 336 | 26.6511 | 108 | 0.1 | 73 |
GU.RORO.HHZ. | 2023-04-20T14:50:09.67 | 0.3 | undecidable | manual | P | 38 | 48.7179 | 50 | 0.08 | 71 |
GU.IMI.HHZ. | 2023-04-20T14:50:08.87 | 0.1 | undecidable | manual | S | 45 | 22.755 | 111 | 0.01 | 100 |
GU.MGRO.HHZ. | 2023-04-20T14:50:07.08 | 0.3 | undecidable | manual | P | 17 | 32.0457 | 50 | 0.07 | 73 |
GU.IMI.HHZ. | 2023-04-20T14:50:05.42 | 0.3 | undecidable | manual | P | 45 | 22.755 | 111 | 0.15 | 73 |
GU.BURY.HHZ. | 2023-04-20T14:50:05.19 | 0.3 | undecidable | manual | S | 279 | 10.7781 | 129 | -0.05 | 76 |
FR.SAOF.HHZ.00 | 2023-04-20T14:50:05.76 | 0.3 | undecidable | manual | P | 336 | 26.6511 | 108 | -0.25 | 71 |
GU.BURY.HHZ. | 2023-04-20T14:50:03.08 | 0.1 | undecidable | manual | P | 279 | 10.7781 | 129 | -0.11 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
GU.IMI.HHE. | ML:1.4 | 0.000187 | 1.72 | AML | other | m | 2023-04-20T14:50:09.05 |
GU.IMI.HHN. | ML:1.2 | 0.00009272098 | 0.0832 | AML | other | m | 2023-04-20T14:50:09.67 |
FR.SAOF.HHE.00 | ML:0.8 | 0.00003744193 | 0.0576 | AML | other | m | 2023-04-20T14:50:10.92 |
FR.SAOF.HHN.00 | ML:0.7 | 0.000029691759999999996 | 0.0384 | AML | other | m | 2023-04-20T14:50:10.81 |
GU.BURY.HHE. | ML:1.1 | 0.00017345044999999998 | 0.0576 | AML | other | m | 2023-04-20T14:50:05.46 |
GU.BURY.HHN. | ML:1.3 | 0.0002570186 | 0.0576 | AML | other | m | 2023-04-20T14:50:05.33 |
GU.MGRO.HHE. | ML:1.0 | 0.000043700860000000004 | 0.2432 | AML | other | m | 2023-04-20T14:50:12.31 |
GU.RORO.HHE. | ML:1.0 | 0.00002566695 | 1.2032 | AML | other | m | 2023-04-20T14:50:16.47 |
GU.RORO.HHN. | ML:0.9 | 0.000018532315 | 0.1216 | AML | other | m | 2023-04-20T14:50:19.06 |