Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 01-09-2017 and time 17:14:22 (UTC) in region Costa Francese (FRANCIA)

A magnitude ML 1.7 earthquake occured in region: Costa Francese (FRANCIA), on

  • 01-09-2017 17:14:22 (UTC)
  • 01-09-2017 19:14:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.8770, 7.3670 at 8 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
Olivetta San Michele IM 12 211 211
Airole IM 15 407 618
Rocchetta Nervina IM 19 298 916

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km W of Sanremo (54807 inhabitants)
59 Km S of Cuneo (56081 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 2017-09-01
17:14:22		 43.8772 7.3668 8 2018-09-04
09:06:00		 Bollettino Sismico Italiano INGV 53782351
Reviewed
Rev100 		ML 1.5 2017-09-01
17:14:22		 43.8817 7.381 8 2017-09-01
17:22:03		 Sala Sismica INGV-Roma 49590461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-09-01 17:14:22 ± 0.15
Latitude 43.8772 ± 0.0072
Longitude 7.3668 ± 0.0087
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 53782351

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 780
Semi-minor axis of confidence ellipse (meter) 663
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 199
Circular confidence region, given by single value of horizontal uncertainty (meter) 780.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 219
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.96048
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 13
Type of magnitude ML
Reference to an origin 53782351
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-03-02 09:04:40

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 49590461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-09-01 17:22:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PE3.EHZ. 2017-09-01T17:16:21.32 3.0 undecidable manual Sg 10.03 0
IV.MURB.HHZ. 2017-09-01T17:16:12.67 3.0 undecidable manual Sn -0.43 0
IV.MGAB.HHZ. 2017-09-01T17:16:03.96 3.0 undecidable manual Sn -3.87 0
TV.SF04.EHZ. 2017-09-01T17:16:01.39 3.0 undecidable manual Sn 0.78 0
IV.RIBO.EHZ.01 2017-09-01T17:15:51.24 3.0 undecidable manual Sn 1.97 0
IV.T1213.EHZ. 2017-09-01T17:15:42.30 3.0 negative manual Pg 10.86 0
IV.T1218.EHZ. 2017-09-01T17:15:38.45 3.0 undecidable manual Pn 6.9 0
IV.MERA.HNZ. 2017-09-01T17:15:38.38 3.0 undecidable manual Sg 2.41 0
OX.VARN.HHZ. 2017-09-01T17:15:24.35 3.0 undecidable manual Pn -1.59 0
IV.CAPR.HNZ. 2017-09-01T17:15:09.55 3.0 undecidable manual Pg 3.66 0
IV.ZONE.HHZ. 2017-09-01T17:15:06.79 3.0 undecidable manual Pn -1.56 0
GU.BHB.HHZ. 2017-09-01T17:14:54.34 1.0 undecidable manual S 356 106.6155 50 0.24 27
GU.TRAV.HHZ. 2017-09-01T17:14:51.34 3.0 negative manual P -0.84 0
GU.PZZ.HHZ. 2017-09-01T17:14:45.07 0.3 undecidable manual S 344 72.6717 50 0.03 92
GU.RORO.HHZ. 2017-09-01T17:14:42.39 0.6 undecidable manual S 65 61.5939 50 0.31 59
GU.GBOS.HHZ. 2017-09-01T17:14:40.17 0.3 undecidable manual S 43 55.3002 50 -0.23 91
GU.BHB.HHZ. 2017-09-01T17:14:40.97 0.6 undecidable manual P 356 106.6155 50 0.22 55
GU.MGRO.HHZ. 2017-09-01T17:14:36.53 0.3 undecidable manual S 62 39.7269 50 0.28 93
GU.STV.HHZ. 2017-09-01T17:14:36.08 0.3 undecidable manual S 355 41.0256 50 -0.51 88
GU.PZZ.HHZ. 2017-09-01T17:14:35.90 0.3 undecidable manual P 344 72.6717 50 0.38 86
GU.ENR.HHZ. 2017-09-01T17:14:35.71 0.3 undecidable manual S 6 39.0276 50 -0.35 92
GU.RORO.HHZ. 2017-09-01T17:14:33.87 0.6 undecidable manual P 65 61.5939 50 0.05 62
GU.GBOS.HHZ. 2017-09-01T17:14:32.92 0.3 undecidable manual P 43 55.3002 50 0.08 94
GU.ENR.HHZ. 2017-09-01T17:14:30.40 0.3 undecidable manual P 6 39.0276 50 0.06 97
GU.MGRO.HHZ. 2017-09-01T17:14:30.30 0.6 undecidable manual P 62 39.7269 50 -0.15 64
GU.STV.HHZ. 2017-09-01T17:14:30.65 0.3 undecidable manual P 355 41.0256 50 0.01 98
GU.BURY.HHZ. 2017-09-01T17:14:29.09 0.3 undecidable manual S 125 18.4704 114 -0.43 93
FR.SAOF.HHZ.00 2017-09-01T17:14:29.83 0.3 undecidable manual S 51 19.1697 113 0.1 100
GU.BURY.HHZ. 2017-09-01T17:14:26.70 0.3 undecidable manual P 125 18.4704 114 0.14 99
FR.SAOF.HHZ.00 2017-09-01T17:14:26.76 0.6 undecidable manual P 51 19.1697 113 0.08 67
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.BURY.HHN. ML:1.8 0.0005455 0.56 AML other m 2017-09-01T17:14:29.16
GU.BURY.HHE. ML:1.6 0.000354 0.62 AML other m 2017-09-01T17:14:29.19
FR.SAOF.HHE.00 ML:1.6 0.00028849999999999997 0.58 AML other m 2017-09-01T17:14:30.02
FR.SAOF.HHN.00 ML:1.7 0.000368 1.62 AML other m 2017-09-01T17:14:30.94
GU.STV.HHN. ML:1.4 0.00007785000000000001 0.16 AML other m 2017-09-01T17:14:30.79
GU.ENR.HHN. ML:1.7 0.0001795 0.16 AML other m 2017-09-01T17:14:35.82
GU.ENR.HHE. ML:1.9 0.000275 0.3 AML other m 2017-09-01T17:14:35.79
GU.STV.HHE. ML:1.6 0.00013455 0.58 AML other m 2017-09-01T17:14:36.17
GU.GBOS.HHE. ML:1.3 0.000049300725 0.3456 AML other m 2017-09-01T17:14:40.40
GU.GBOS.HHN. ML:1.3 0.000051644615000000005 0.3328 AML other m 2017-09-01T17:14:40.47
GU.PZZ.HHE. ML:1.9 0.00011360000000000001 0.18 AML other m 2017-09-01T17:14:45.15
GU.PZZ.HHN. ML:1.8 0.00009265000000000002 1.08 AML other m 2017-09-01T17:14:45.72
IV.MURB.HHE. ML:3.5 0.00014549999999999999 0.08 AML other m 2017-09-01T17:16:13.67
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