Earthquake with magnitude of ML 1.8 on date 16-05-2020 and time 17:09:51 (Italy) in region Confine Italia Francia (FRANCIA)

A magnitude ML 1.8 earthquake occured in region: Confine Italia Francia (FRANCIA), on

  • 16-05-2020 15:09:51 (UTC)
  • 16-05-2020 17:09:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.9630, 7.3400 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.

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 17 211 211
Airole IM 20 407 618

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km W of Sanremo (54807 inhabitants)
51 Km SW of Cuneo (56081 inhabitants)
99 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
Bulletin
Rev1000
ML 1.8 2020-05-16
15:09:51
43.9632 7.3397 10 2020-11-19
12:36:59
Bollettino Sismico Italiano INGV 82684351
Reviewed
Rev100
ML 1.8 2020-05-16
15:09:51
43.9595 7.3455 10 2020-05-16
15:18:56
Sala Sismica INGV-Roma 79202321
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-16 15:09:51 ± 0.25
Latitude 43.9632 ± 0.0090
Longitude 7.3397 ± 0.0150
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 82684351

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1378
Semi-minor axis of confidence ellipse (meter) 405
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 54
Circular confidence region, given by single value of horizontal uncertainty (meter) 1380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 174
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.15468
Epicentral distance of station farthest from the epicenter (degree) 1.41283
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 82684351
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-09-06 17:49:44

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 79202321
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-16 15:18:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
RD.ORIF.BHE. 2020-05-16T15:10:17.65 0.3 undecidable manual P 313 156.8208 50 0.82 46
GU.PCP.HHZ. 2020-05-16T15:10:11.12 0.3 undecidable manual P 56 115.2957 50 0.69 54
GU.PZZ.HHZ. 2020-05-16T15:10:10.19 0.6 undecidable manual S 344 62.8926 50 -0.37 44
GU.RORO.HHZ. 2020-05-16T15:10:10.06 0.6 undecidable manual S 74 60.1953 50 0.2 46
GU.BHB.HHZ. 2020-05-16T15:10:07.12 0.3 undecidable manual P 356 96.9252 50 -0.48 61
GU.GBOS.HHZ. 2020-05-16T15:10:07.18 0.6 undecidable manual S 52 50.4162 50 -0.06 48
IV.QLNO.HHZ. 2020-05-16T15:10:07.13 0.1 undecidable manual P 63 89.5437 50 0.67 76
IV.IMI.HHZ. 2020-05-16T15:10:05.62 0.6 undecidable manual S 97 44.622 50 -0.06 49
GU.RORO.HHZ. 2020-05-16T15:10:02.32 0.1 undecidable manual P 74 60.1953 50 0.37 89
GU.PZZ.HHZ. 2020-05-16T15:10:02.59 0.1 undecidable manual P 344 62.8926 50 0.24 91
GU.STV.HHZ. 2020-05-16T15:10:01.36 0.3 undecidable manual S 358 31.3464 50 -0.79 61
GU.ENR.HHZ. 2020-05-16T15:10:01.38 0.6 undecidable manual S 12 29.9478 50 -0.39 47
GU.GBOS.HHZ. 2020-05-16T15:10:00.77 0.1 positive manual P 52 50.4162 50 0.34 91
GU.BURY.HHZ. 2020-05-16T15:10:00.37 0.3 undecidable manual S 139 26.5512 50 -0.49 69
IV.IMI.HHZ. 2020-05-16T15:09:59.54 0.1 undecidable manual P 97 44.622 50 0 98
GU.ENR.HHZ. 2020-05-16T15:09:57.33 0.1 negative manual P 12 29.9478 50 0.05 100
FR.SAOF.HHZ.00 2020-05-16T15:09:57.72 0.6 undecidable manual S 81 17.1717 121 -0.36 48
GU.STV.HHZ. 2020-05-16T15:09:57.38 0.1 undecidable manual P 358 31.3464 50 -0.11 99
GU.BURY.HHZ. 2020-05-16T15:09:56.49 0.1 undecidable manual P 139 26.5512 50 -0.26 96
FR.SAOF.HHZ.00 2020-05-16T15:09:54.91 0.1 positive manual P 81 17.1717 121 -0.23 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
FR.SAOF.HHN.00 ML:1.4 0.00020050000000000002 0.66 AML other m 2020-05-16T15:09:59.65
FR.SAOF.HHE.00 ML:1.5 0.00027049999999999996 0.8 AML other m 2020-05-16T15:09:59.88
GU.STV.HHE. ML:2.0 0.000433 0.08 AML other m 2020-05-16T15:10:01.55
GU.ENR.HHE. ML:2.0 0.00049 0.24 AML other m 2020-05-16T15:10:01.52
GU.STV.HHN. ML:2.0 0.00041000000000000005 0.2 AML other m 2020-05-16T15:10:01.53
GU.ENR.HHN. ML:2.0 0.000486 0.24 AML other m 2020-05-16T15:10:01.96
IV.IMI.HHN. ML:1.9 0.0002615 1.2 AML other m 2020-05-16T15:10:07.80
IV.IMI.HHE. ML:1.6 0.0001139 0.34 AML other m 2020-05-16T15:10:07.27
GU.GBOS.HHE. ML:1.7 0.000123 0.48 AML other m 2020-05-16T15:10:07.60
GU.GBOS.HHN. ML:1.8 0.00016549999999999998 0.2 AML other m 2020-05-16T15:10:07.62
GU.PZZ.HHN. ML:2.0 0.000174 0.5 AML other m 2020-05-16T15:10:10.50
GU.PZZ.HHE. ML:2.0 0.00017549999999999998 1.44 AML other m 2020-05-16T15:10:11.92
GU.BHB.HHN. ML:1.6 0.00004375 0.34 AML other m 2020-05-16T15:10:21.37
GU.BHB.HHE. ML:1.7 0.0000521 0.56 AML other m 2020-05-16T15:10:21.56
IV.QLNO.HHN. ML:1.6 0.0000519 1.06 AML other m 2020-05-16T15:10:22.70
IV.QLNO.HHE. ML:1.8 0.00006890000000000001 1.42 AML other m 2020-05-16T15:10:24.95
GU.PCP.HHN. ML:1.8 0.0000543 0.78 AML other m 2020-05-16T15:10:28.13
GU.PCP.HHE. ML:1.8 0.0000461 0.86 AML other m 2020-05-16T15:10:28.44
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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