Earthquake with magnitude of ML 1.7 on date 07-04-2020 and time 10:16:49 (UTC) in region Costa Ligure Occidentale (Imperia)

A magnitude ML 1.7 earthquake occured in region: Costa Ligure Occidentale (Imperia), on

  • 07-04-2020 10:16:49 (UTC)
  • 07-04-2020 12:16:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.04, 7.65 at 6 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
Briga Alta CN 10 39 39
Triora IM 11 355 394
Molini di Triora IM 12 617 1011
Pigna IM 12 859 1870
Castel Vittorio IM 12 287 2157
Mendatica IM 14 185 2342
Montegrosso Pian Latte IM 14 118 2460
Cosio d'Arroscia IM 15 221 2681
Bajardo IM 16 312 2993
Rocchetta Nervina IM 17 298 3291
Apricale IM 18 629 3920
Isolabona IM 18 679 4599
Rezzo IM 18 366 4965
Pornassio IM 18 685 5650
Limone Piemonte CN 19 1485 7135
Perinaldo IM 19 870 8005
Carpasio IM 20 168 8173
Airole IM 20 407 8580

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NW of Sanremo (54807 inhabitants)
40 Km S of Cuneo (56081 inhabitants)
73 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 1.7 2020-04-07
10:16:49
44.04 7.65 6 2020-07-18
21:08:36
Bollettino Sismico Italiano INGV 79040561
Reviewed
Rev100
ML 1.7 2020-04-07
10:16:50
44.03 7.66 1 2020-04-07
10:33:06
Sala Sismica INGV-Roma 77978741
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-07 10:16:49 ± 0.06
Latitude 44.04 ± 0.00
Longitude 7.65 ± 0.01
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 79040561

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 341
Semi-minor axis of confidence ellipse (meter) 274
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 18
Circular confidence region, given by single value of horizontal uncertainty (meter) 340
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 80
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
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) 0.08544
Epicentral distance of station farthest from the epicenter (degree) 1.07289
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 25
Type of magnitude ML
Reference to an origin 79040561
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-05-11 08:28:37

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 77978741
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-07 10:33:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.BHB.HHZ. 2020-04-07T10:17:18.00 0.6 undecidable manual S 341 0.8418 50 -0.5 40
GU.RRL.HHZ. 2020-04-07T10:17:10.57 0.6 undecidable manual P 326 1.0729 50 0.22 40
IV.MONC.HHZ. 2020-04-07T10:17:10.30 1.0 undecidable manual P 11 1.054 50 0.26 20
GU.RNCA.HHE. 2020-04-07T10:17:09.91 1.0 undecidable manual P 65 1.0297 50 0.3 20
GU.BHB.HHZ. 2020-04-07T10:17:06.40 0.3 undecidable manual P 341 0.8418 50 -0.01 66
GU.CANO.HHZ. 2020-04-07T10:17:06.74 0.6 undecidable manual S 68 0.456 50 -0.32 45
GU.PCP.HHZ. 2020-04-07T10:17:06.76 1.0 undecidable manual P 52 0.8166 50 0.8 18
IV.QLNO.HHZ. 2020-04-07T10:17:02.05 0.3 undecidable manual P 60 0.5774 50 0.18 67
GU.PZZ.HHZ. 2020-04-07T10:17:02.40 0.6 undecidable manual P 321 0.6025 50 0.08 46
GU.STV.HHZ. 2020-04-07T10:17:01.54 0.3 undecidable manual S 312 0.3094 99 -0.45 67
GU.RORO.HHZ. 2020-04-07T10:17:01.71 0.3 undecidable manual S 76 0.3103 99 -0.3 69
GU.BURY.HNZ. 2020-04-07T10:17:00.00 0.6 undecidable manual S 194 0.2635 101 -0.24 47
GU.CANO.HHZ. 2020-04-07T10:16:59.68 0.6 undecidable manual P 68 0.456 50 -0.13 46
GU.GBOS.HHZ. 2020-04-07T10:16:59.60 0.6 undecidable manual S 34 0.2464 102 0.01 50
GU.ENR.HHZ. 2020-04-07T10:16:59.33 0.3 undecidable manual S 319 0.2491 102 -0.35 69
IV.IMI.HHZ. 2020-04-07T10:16:58.20 0.6 undecidable manual S 126 0.2185 103 -0.34 47
GU.RORO.HHZ. 2020-04-07T10:16:57.03 0.3 undecidable manual P 76 0.3103 99 0.14 72
GU.STV.HHZ. 2020-04-07T10:16:56.99 0.3 undecidable manual P 312 0.3094 99 0.11 72
GU.GBOS.HHZ. 2020-04-07T10:16:55.84 0.3 undecidable manual P 34 0.2464 102 0.35 69
GU.ENR.HHZ. 2020-04-07T10:16:55.94 0.1 positive manual P 319 0.2491 102 0.4 92
GU.BURY.HNZ. 2020-04-07T10:16:55.84 0.3 undecidable manual P 194 0.2635 101 -0.03 74
IV.IMI.HHZ. 2020-04-07T10:16:54.89 0.1 undecidable manual P 126 0.2185 103 0 100
FR.SAOF.HHZ.00 2020-04-07T10:16:53.65 0.6 undecidable manual S 232 0.0854 121 -0.08 50
FR.SAOF.HHZ.00 2020-04-07T10:16:52.33 0.1 undecidable manual P 232 0.0854 121 0.22 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
TV.SF04.EHE. ML:0 0.000797 1.46 AML other m 2020-04-07T10:18:31.13
TV.SF04.EHN. ML:0 0.0006105 1.94 AML other m 2020-04-07T10:18:33.02
FR.SAOF.HHE.00 ML:1.8 0.0011020175 0.3008 AML other m 2020-04-07T10:16:54.61
FR.SAOF.HHN.00 ML:2 0.001686378 0.5056 AML other m 2020-04-07T10:16:56.48
IV.IMI.HHE. ML:1.7 0.0003184851 0.3008 AML other m 2020-04-07T10:16:59.39
IV.IMI.HHN. ML:2.2 0.00102599115 0.4032 AML other m 2020-04-07T10:16:59.49
GU.GBOS.HHN. ML:1.4 0.00014251795 0.384 AML other m 2020-04-07T10:17:00.66
GU.GBOS.HHE. ML:1.3 0.00010710939 0.1408 AML other m 2020-04-07T10:17:00.03
GU.ENR.HHE. ML:1.7 0.0002560981 0.1984 AML other m 2020-04-07T10:16:59.82
GU.ENR.HHN. ML:1.7 0.0002634807 0.1984 AML other m 2020-04-07T10:16:59.82
GU.STV.HHE. ML:1.8 0.00027790605 0.16 AML other m 2020-04-07T10:17:01.60
GU.STV.HHN. ML:1.6 0.000160801 0.2368 AML other m 2020-04-07T10:17:01.99
GU.RORO.HHN. ML:1.5 0.0001236333 0.1408 AML other m 2020-04-07T10:17:02.09
GU.RORO.HHE. ML:1.5 0.00013781055 0.3008 AML other m 2020-04-07T10:17:01.75
GU.CANO.HHE. ML:1.8 0.00018303075 0.4416 AML other m 2020-04-07T10:17:10.63
GU.CANO.HHN. ML:1.8 0.0001571895 0.3648 AML other m 2020-04-07T10:17:09.38
IV.QLNO.HHE. ML:1.6 8.1231435E-5 0.32 AML other m 2020-04-07T10:17:16.41
IV.QLNO.HHN. ML:1.5 5.375269E-5 0.3392 AML other m 2020-04-07T10:17:15.41
GU.PZZ.HHN. ML:1.9 0.00015102205 0.3584 AML other m 2020-04-07T10:17:12.04
GU.PZZ.HHE. ML:1.8 0.00010745665 0.1984 AML other m 2020-04-07T10:17:16.64
GU.BHB.HHN. ML:1.9 8.319314E-5 0.16 AML other m 2020-04-07T10:17:19.50
GU.BHB.HHE. ML:1.8 6.6866315E-5 0.1408 AML other m 2020-04-07T10:17:18.36
GU.PCP.HHE. ML:1.7 6.1455095E-5 0.6016 AML other m 2020-04-07T10:17:24.85
GU.PCP.HHN. ML:1.5 3.278417E-5 0.5184 AML other m 2020-04-07T10:17:29.85
IV.MONC.HHE. ML:2.2 0.00011756275 0.3584 AML other m 2020-04-07T10:17:33.13
IV.MONC.HHN. ML:2.1 9.1704575E-5 0.3776 AML other m 2020-04-07T10:17:34.38
GU.RRL.HHN. ML:1.4 1.983166E-5 0.384 AML other m 2020-04-07T10:17:27.67
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download