Earthquake with magnitude of ML 0.9 on date 27-12-2023 and time 15:53:02 (Italy) in region Confine Italia Francia (FRANCIA)

A magnitude ML 0.9 earthquake occured in region: Confine Italia Francia (FRANCIA), on

  • 27-12-2023 14:53:02 (UTC)
  • 27-12-2023 15:53:02 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.0010, 7.5100 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Olivetta San Michele IM 13 211 211
Rocchetta Nervina IM 14 298 509
Pigna IM 15 859 1368
Airole IM 15 407 1775
Castel Vittorio IM 15 287 2062
Isolabona IM 17 679 2741
Apricale IM 18 629 3370
Dolceacqua IM 19 2074 5444
Perinaldo IM 20 870 6314
Bajardo IM 20 312 6626

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km NW of Sanremo (54807 inhabitants)
44 Km S of Cuneo (56081 inhabitants)
85 Km W 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
Reviewed
Rev100
ML 0.9 2023-12-27
14:53:02
44.0008 7.5095 10 2023-12-27
14:59:37
Sala Sismica INGV-Roma 124302041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-27 14:53:02 ± 0.15
Latitude 44.0008 ± 0.0090
Longitude 7.5095 ± 0.0138
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 124302041

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1270
Semi-minor axis of confidence ellipse (meter) 731
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 230
Circular confidence region, given by single value of horizontal uncertainty (meter) 1270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 161
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
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) 0.03417
Epicentral distance of station farthest from the epicenter (degree) 0.56118
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 124302041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-27 14:59:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.RORO.HHZ. 2023-12-27T14:53:17.21 0.3 undecidable manual S 74 46.1205 50 -0.26 69
GU.GBOS.HHZ. 2023-12-27T14:53:14.86 0.3 undecidable manual S 44 37.5291 50 -0.31 69
GU.IMI.HHZ. 2023-12-27T14:53:13.34 0.6 undecidable manual S 108 32.2455 50 -0.42 46
GU.CANO.HHZ. 2023-12-27T14:53:13.95 0.3 undecidable manual P 68 62.2932 50 0.35 66
GU.STV.HHZ. 2023-12-27T14:53:12.99 0.3 undecidable manual S 332 30.747 50 -0.39 69
GU.BURY.HHZ. 2023-12-27T14:53:11.18 0.6 undecidable manual S 171 24.5532 112 -0.35 47
GU.RORO.HHZ. 2023-12-27T14:53:11.49 0.1 undecidable manual P 74 46.1205 50 0.39 90
GU.GBOS.HHZ. 2023-12-27T14:53:10.18 0.3 positive manual P 44 37.5291 50 0.41 68
GU.STV.HHZ. 2023-12-27T14:53:09.17 1.0 undecidable manual P 332 30.747 50 0.44 23
GU.IMI.HHZ. 2023-12-27T14:53:09.08 0.6 negative manual P 108 32.2455 50 0.12 49
GU.BURY.HHZ. 2023-12-27T14:53:08.03 1.0 positive manual P 171 24.5532 112 0.36 23
GU.ENR.HHE. 2023-12-27T14:53:07.95 0.1 undecidable manual P 344 26.3514 110 -0.07 99
FR.SAOF.HHE.00 2023-12-27T14:53:05.66 0.3 undecidable manual S 115 3.7962 158 -0.34 73
FR.SAOF.HHE.00 2023-12-27T14:53:04.70 0.1 undecidable manual P 115 3.7962 158 0.22 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.IMI.HHN. ML:1.5 0.00013000000000000002 0.76 AML other m 2023-12-27T14:53:13.47
GU.IMI.HHE. ML:1.3 0.00008985 0.3 AML other m 2023-12-27T14:53:13.71
GU.BURY.HHE. ML:0.9 0.00004722188 0.2048 AML other m 2023-12-27T14:53:11.80
GU.BURY.HHN. ML:0.7 0.000029739265 0.2432 AML other m 2023-12-27T14:53:11.15
GU.BURY.HNE. ML:0.9 0.000047294349999999996 0.7488 AML other m 2023-12-27T14:53:22.41
GU.BURY.HNN. ML:1.0 0.000059625415 0.256 AML other m 2023-12-27T14:53:11.79
GU.STV.HHE. ML:0.9 0.000035908675 0.0768 AML other m 2023-12-27T14:53:13.04
GU.STV.HHN. ML:0.6 0.00002216408 0.1152 AML other m 2023-12-27T14:53:13.07
GU.GBOS.HHE. ML:0.6 0.000016894924999999998 0.1216 AML other m 2023-12-27T14:53:14.79
GU.GBOS.HHN. ML:0.6 0.000015314380000000002 0.16 AML other m 2023-12-27T14:53:15.06
GU.RORO.HHE. ML:0.8 0.000020811425 0.1216 AML other m 2023-12-27T14:53:17.50
GU.RORO.HHN. ML:0.9 0.000024935125000000003 0.1024 AML other m 2023-12-27T14:53:17.60
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