Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 29-01-2023 and time 02:24:31 (Italy) in region 4 km NE Bajardo (IM)

A magnitude ML 1.6 earthquake occured in region: 4 km NE Bajardo (IM), on

  • 29-01-2023 01:24:31 (UTC)
  • 29-01-2023 02:24:31 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.9340, 7.7470 at 10 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Bajardo IM 4 312 312
Castel Vittorio IM 6 287 599
Ceriana IM 6 1250 1849
Pigna IM 7 859 2708
Molini di Triora IM 7 617 3325
Triora IM 7 355 3680
Montalto Ligure IM 8 377 4057
Badalucco IM 8 1136 5193
Apricale IM 9 629 5822
Perinaldo IM 9 870 6692
Carpasio IM 10 168 6860
Isolabona IM 10 679 7539
Castellaro IM 12 1256 8795
Rocchetta Nervina IM 13 298 9093
Seborga IM 13 315 9408
Sanremo IM 13 54807 64215
Taggia IM 13 14116 78331
Pietrabruna IM 14 501 78832
Dolceacqua IM 14 2074 80906
Rezzo IM 14 366 81272
Soldano IM 14 977 82249
Pompeiana IM 15 823 83072
Vallebona IM 15 1310 84382
San Biagio della Cima IM 15 1329 85711
Ospedaletti IM 15 3367 89078
Terzorio IM 15 216 89294
Aurigo IM 15 347 89641
Riva Ligure IM 15 2910 92551
Prelà IM 15 503 93054
Montegrosso Pian Latte IM 16 118 93172
Camporosso IM 16 5632 98804
Santo Stefano al Mare IM 16 2197 101001
Borgomaro IM 17 865 101866
Mendatica IM 17 185 102051
Dolcedo IM 17 1415 103466
Briga Alta CN 17 39 103505
Vasia IM 17 389 103894
Airole IM 17 407 104301
Cosio d'Arroscia IM 17 221 104522
Civezza IM 18 609 105131
Cipressa IM 18 1290 106421
Vallecrosia IM 18 6956 113377
Lucinasco IM 18 272 113649
Costarainera IM 18 828 114477
Bordighera IM 18 10469 124946
Pornassio IM 18 685 125631
Caravonica IM 18 282 125913
Pieve di Teco IM 19 1338 127251
Ventimiglia IM 19 24310 151561
Olivetta San Michele IM 19 211 151772
Chiusavecchia IM 19 577 152349
San Lorenzo al Mare IM 20 1297 153646

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km N of Sanremo (54807 inhabitants)
54 Km SE of Cuneo (56081 inhabitants)
72 Km SW of Savona (61345 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.6 2023-01-29
01:24:31		 43.9342 7.7472 10 2024-03-01
17:17:55		 Bollettino Sismico Italiano INGV 114433071
Reviewed
Rev100 		ML 1.6 2023-01-29
01:24:31		 43.9417 7.7302 9 2023-01-29
01:31:13		 Sala Sismica INGV-Roma 113870061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-01-29 01:24:31 ± 0.1
Latitude 43.9342 ± 0.0063
Longitude 7.7472 ± 0.0075
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 114433071

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 739
Semi-minor axis of confidence ellipse (meter) 399
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 145
Circular confidence region, given by single value of horizontal uncertainty (meter) 740.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 170
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.11691
Epicentral distance of station farthest from the epicenter (degree) 0.96497
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 113870061
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-01-29 01:31:13

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 114433071
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-08-10 14:06:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.BHB.HHZ. 2023-01-29T01:24:49.86 0.3 undecidable manual P 339 107.115 50 0.25 61
GU.PCP.HHZ. 2023-01-29T01:24:47.86 0.6 undecidable manual P 43 92.5407 50 0.49 40
GU.CANO.HHZ. 2023-01-29T01:24:47.22 0.6 undecidable manual S 52 49.4172 50 -0.22 46
GU.STV.HHZ. 2023-01-29T01:24:46.83 0.3 undecidable manual S 316 48.1185 50 -0.25 68
GU.PZZ.HHZ. 2023-01-29T01:24:46.01 0.3 undecidable manual P 322 80.9523 50 0.43 62
IV.QLNO.HHZ. 2023-01-29T01:24:43.44 0.3 undecidable manual P 48 64.3911 50 0.41 64
GU.GBOS.HHZ. 2023-01-29T01:24:43.40 0.3 undecidable manual S 12 34.9428 50 -0.15 71
GU.RORO.HHZ. 2023-01-29T01:24:42.27 0.3 undecidable manual S 52 32.2455 50 -0.58 64
GU.CANO.HHZ. 2023-01-29T01:24:40.51 0.3 undecidable manual P 52 49.4172 50 -0.22 69
GU.BURY.HHZ. 2023-01-29T01:24:40.01 0.3 undecidable manual S 222 22.6551 114 -0.17 73
GU.STV.HHZ. 2023-01-29T01:24:40.83 0.6 negative manual P 316 48.1185 50 0.31 45
GU.RORO.HHZ. 2023-01-29T01:24:38.09 0.3 undecidable manual P 52 32.2455 50 0.01 74
GU.GBOS.HHZ. 2023-01-29T01:24:38.61 0.3 undecidable manual P 12 34.9428 50 0.12 72
FR.SAOF.HHZ.00 2023-01-29T01:24:38.01 0.3 undecidable manual S 290 16.5723 121 -0.28 72
GU.MGRO.HHZ. 2023-01-29T01:24:37.19 0.3 undecidable manual S 22 12.9759 128 -0.08 75
GU.BURY.HHZ. 2023-01-29T01:24:36.53 0.1 undecidable manual P 222 22.6551 114 -0.01 100
FR.SAOF.HHZ.00 2023-01-29T01:24:35.45 0.3 undecidable manual P 290 16.5723 121 0 76
GU.MGRO.HHZ. 2023-01-29T01:24:35.04 0.1 positive manual P 22 12.9759 128 0.18 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.MGRO.HNN. ML:1.8 0.000747 0.12 AML other m 2023-01-29T01:24:37.25
GU.MGRO.HHE. ML:1.8 0.000775 0.14 AML other m 2023-01-29T01:24:37.24
GU.MGRO.HHN. ML:1.9 0.00084 0.1 AML other m 2023-01-29T01:24:37.42
GU.MGRO.HNE. ML:1.8 0.000786 0.12 AML other m 2023-01-29T01:24:37.43
GU.BURY.HHN. ML:1.6 0.00025 0.74 AML other m 2023-01-29T01:24:40.57
GU.BURY.HNN. ML:1.6 0.0002855 0.5 AML other m 2023-01-29T01:24:40.51
GU.BURY.HHE. ML:1.7 0.0003015 0.48 AML other m 2023-01-29T01:24:40.27
GU.BURY.HNE. ML:1.5 0.0002195 1.06 AML other m 2023-01-29T01:24:40.32
GU.RORO.HHE. ML:1.8 0.0002875 0.14 AML other m 2023-01-29T01:24:42.93
GU.RORO.HHN. ML:1.8 0.0002595 0.12 AML other m 2023-01-29T01:24:42.86
GU.GBOS.HHE. ML:1.4 0.00009759999999999999 0.32 AML other m 2023-01-29T01:24:43.49
GU.GBOS.HHN. ML:1.0 0.00004625 0.74 AML other m 2023-01-29T01:24:45.90
GU.STV.HHN. ML:1.3 0.0000539 0.2 AML other m 2023-01-29T01:24:47.68
GU.STV.HHE. ML:1.3 0.00005675 1.24 AML other m 2023-01-29T01:24:49.71
IV.QLNO.HHE. ML:1.5 0.00006165 0.36 AML other m 2023-01-29T01:24:52.70
IV.QLNO.HHN. ML:1.6 0.00007314999999999999 0.54 AML other m 2023-01-29T01:24:52.60
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download