Istituto Nazionale di Geofisica e Vulcanologia

Earthquake (quarry blast) with magnitude of ML 1.1 on date 17-10-2017 and time 11:59:49 (Italy) in region 3 km S Robilante (CN)

A magnitude ML 1.1 (quarry blast) earthquake occured in region: 3 km S Robilante (CN), on

  • 17-10-2017 09:59:49 (UTC)
  • 17-10-2017 11:59:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.2700, 7.5160 at 0 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Event type: quarry blast.

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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Robilante CN 3 2306 2306
Vernante CN 3 1178 3484
Roaschia CN 5 107 3591
Roccavione CN 6 2761 6352
Borgo San Dalmazzo CN 7 12468 18820
Boves CN 7 9835 28655
Limone Piemonte CN 9 1485 30140
Valdieri CN 10 935 31075
Entracque CN 10 774 31849
Roccasparvera CN 10 741 32590
Peveragno CN 11 5543 38133
Vignolo CN 11 2600 40733
Gaiola CN 11 582 41315
Moiola CN 12 234 41549
Rittana CN 13 109 41658
Cervasca CN 13 5013 46671
Valloriate CN 14 109 46780
Cuneo CN 14 56081 102861
Chiusa di Pesio CN 14 3676 106537
Bernezzo CN 15 4104 110641
Beinette CN 15 3423 114064
Caraglio CN 18 6836 120900
Demonte CN 18 2003 122903
Valgrana CN 19 786 123689
Pianfei CN 19 2202 125891
Roccaforte Mondovì CN 19 2085 127976

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km S of Cuneo (56081 inhabitants)
54 Km NW of Sanremo (54807 inhabitants)
77 Km W of Savona (61345 inhabitants)
83 Km S of Moncalieri (57294 inhabitants)
89 Km SW of Asti (76202 inhabitants)
90 Km S of Torino (890529 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 1.1 2017-10-17
09:59:49		 44.2702 7.5157 1 2018-09-04
09:07:58		 Bollettino Sismico Italiano INGV 52610671
Reviewed
Rev100 		ML 0.9 2017-10-17
09:59:49		 44.247 7.5037 6 2017-10-17
10:26:12		 Sala Sismica INGV-Roma 51064551
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-10-17 09:59:49 ± 0.11
Latitude 44.2702 ± 0.0099
Longitude 7.5157 ± 0.0063
Depth (km) 1 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type quarry blast
Origin ID 52610671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1070
Semi-minor axis of confidence ellipse (meter) 530
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 357
Circular confidence region, given by single value of horizontal uncertainty (meter) 1070.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 119
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
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) 0.08094
Epicentral distance of station farthest from the epicenter (degree) 0.78331
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:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 51064551
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-10-17 10:26:12

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 52610671
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-07-24 09:28:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.PCP.HHN. 2017-10-17T10:00:05.88 0.3 undecidable manual P 69 86.9463 50 0.29 62
IV.QLNO.HHZ. 2017-10-17T10:00:02.22 0.6 undecidable manual P 84 66.1893 50 -0.17 44
GU.CANO.HHZ. 2017-10-17T10:00:00.35 0.6 undecidable manual P 97 57.7977 90 -0.64 40
IV.IMI.HHZ. 2017-10-17T09:59:59.32 0.6 undecidable manual P 143 49.9167 91 -0.11 46
GU.RORO.HHZ. 2017-10-17T09:59:58.64 0.6 undecidable manual P 112 47.1195 91 -0.22 45
GU.PZZ.HHZ. 2017-10-17T09:59:57.77 1.0 undecidable manual P 310 41.1255 91 0.1 24
GU.MGRO.HHZ. 2017-10-17T09:59:56.40 0.6 undecidable manual P 137 34.3434 91 0.1 48
FR.SAOF.HHZ. 2017-10-17T09:59:55.95 0.6 undecidable manual P 175 31.6461 91 0.19 47
GU.GBOS.HHZ. 2017-10-17T09:59:54.92 0.3 undecidable manual P 97 25.9518 91 0.3 70
GU.STV.HHZ. 2017-10-17T09:59:52.34 0.1 undecidable manual P 260 15.2736 92 -0.15 98
GU.ENR.HHZ. 2017-10-17T09:59:51.30 0.1 undecidable manual P 238 8.9799 93 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.STV.HHE. ML:0.7 0.0000546253 0.3008 AML other m 2017-10-17T09:59:56.17
GU.STV.HHN. ML:0.8 0.00007620043499999999 0.3968 AML other m 2017-10-17T09:59:56.95
GU.MGRO.HHN. ML:1.2 0.000063357715 2.624 AML other m 2017-10-17T10:00:04.70
GU.MGRO.HHE. ML:1.0 0.000046256895 1.2544 AML other m 2017-10-17T10:00:06.30
GU.CANO.HHN. ML:1.5 0.00007653683 0.256 AML other m 2017-10-17T10:00:09.00
GU.CANO.HHE. ML:1.4 0.000058902755 1.0176 AML other m 2017-10-17T10:00:11.26
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