Earthquake (quarry blast) with magnitude of ML 1.0 on date 22-08-2018 and time 09:59:57 (UTC) in region 1 km SW Robilante (CN)

A magnitude ML 1.0 (quarry blast) earthquake occured in region: 1 km SW Robilante (CN), on

  • 22-08-2018 09:59:57 (UTC)
  • 22-08-2018 11:59:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.287, 7.502 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.

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 1 2306 2306
Roccavione CN 4 2761 5067
Roaschia CN 4 107 5174
Borgo San Dalmazzo CN 5 12468 17642
Vernante CN 5 1178 18820
Boves CN 6 9835 28655
Roccasparvera CN 8 741 29396
Valdieri CN 8 935 30331
Vignolo CN 9 2600 32931
Gaiola CN 9 582 33513
Entracque CN 10 774 34287
Moiola CN 10 234 34521
Peveragno CN 11 5543 40064
Rittana CN 11 109 40173
Cervasca CN 11 5013 45186
Limone Piemonte CN 11 1485 46671
Valloriate CN 12 109 46780
Bernezzo CN 13 4104 50884
Cuneo CN 13 56081 106965
Beinette CN 15 3423 110388
Chiusa di Pesio CN 15 3676 114064
Caraglio CN 16 6836 120900
Demonte CN 17 2003 122903
Valgrana CN 17 786 123689
Pianfei CN 19 2202 125891
Monterosso Grana CN 20 505 126396
Margarita CN 20 1441 127837
Montemale di Cuneo CN 20 241 128078
Roccaforte Mondovì CN 20 2085 130163

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km SW of Cuneo (56081 inhabitants)
56 Km NW of Sanremo (54807 inhabitants)
78 Km W of Savona (61345 inhabitants)
81 Km S of Moncalieri (57294 inhabitants)
88 Km SW of Asti (76202 inhabitants)
89 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 1.0 2018-08-22
09:59:57
44.2868 7.5017 1 2019-04-24
14:51:17
Bollettino Sismico Italiano INGV 67159561
Reviewed
Rev100
ML 1.1 2018-08-22
09:59:57
44.2657 7.4883 8 2018-08-22
12:42:58
Sala Sismica INGV-Roma 60070051
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-08-22 09:59:57 ± 0.19
Latitude 44.2868 ± 0.0144
Longitude 7.5017 ± 0.0151
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 67159561

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1570
Semi-minor axis of confidence ellipse (meter) 1200
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 13
Circular confidence region, given by single value of horizontal uncertainty (meter) 1570
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.44
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.78691
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 67159561
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-04-01 13:24:02

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 60070051
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-08-22 12:42:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.LTRZ.EHZ. 2018-08-22T10:02:15.16 3.0 undecidable manual Pg 21.82 0
IV.ARVD.HHZ. 2018-08-22T10:02:08.79 3.0 undecidable manual Sg 18.76 0
SI.KOSI.HHZ. 2018-08-22T10:01:57.77 3.0 undecidable manual Sg 19.23 0
OB.GAVE.EHZ. 2018-08-22T10:01:52.62 3.0 undecidable manual Sn -2.6 0
IV.MTMR.EHZ. 2018-08-22T10:01:39.98 3.0 positive manual Pn 5.12 0
IV.RIBO.EHZ.01 2018-08-22T10:01:24.36 3.0 undecidable manual Sn 1.92 0
NI.PALA.HHZ. 2018-08-22T10:01:13.47 3.0 negative manual Pn 7.76 0
IV.ZONE.HHZ. 2018-08-22T10:01:10.51 3.0 undecidable manual Sn -0.61 0
IV.VIVA.HHZ. 2018-08-22T10:01:10.21 3.0 negative manual Pn 0.97 0
IV.PIEI.HHZ. 2018-08-22T10:01:03.19 3.0 undecidable manual Pg 6.08 0
IV.COR1.EHZ. 2018-08-22T10:01:02.65 3.0 undecidable manual Pn 1.25 0
OX.CIMO.HHZ. 2018-08-22T10:01:02.57 3.0 positive manual Pn 0.5 0
SI.KOSI.HHZ. 2018-08-22T10:01:02.73 3.0 positive manual Pg 7.99 0
IV.CMPO.HNZ. 2018-08-22T10:00:51.44 3.0 positive manual Pn 2.56 0
IV.NDIM.HHZ. 2018-08-22T10:00:44.71 3.0 positive manual Pg 3.91 0
GU.RNCA.HHZ. 2018-08-22T10:00:17.97 3.0 undecidable manual P -2.69 0
GU.PCP.HHZ. 2018-08-22T10:00:14.13 0.1 undecidable manual P 71 0.7869 50 0.8 73
GU.BHB.HHZ. 2018-08-22T10:00:09.05 0.3 undecidable manual P 343 0.5738 50 -0.63 62
IV.IMI.HHZ. 2018-08-22T10:00:07.06 0.3 undecidable manual P 143 0.4694 91 -0.48 67
GU.RORO.HHZ. 2018-08-22T10:00:06.61 0.3 undecidable manual P 113 0.4407 91 -0.28 70
GU.PZZ.HHZ. 2018-08-22T10:00:04.69 0.3 undecidable manual P 309 0.3525 91 -0.24 72
FR.SAOF.HHZ.00 2018-08-22T10:00:03.52 0.3 undecidable manual P 173 0.3031 91 -0.31 71
GU.GBOS.HHZ. 2018-08-22T10:00:02.83 0.3 undecidable manual P 100 0.2464 91 0.26 73
GU.STV.HHZ. 2018-08-22T10:00:00.38 0.3 undecidable manual P 252 0.1322 92 0.34 73
GU.ENR.HHZ. 2018-08-22T09:59:59.24 0.1 undecidable manual P 224 0.0836 93 0.28 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.ENR.HHE. ML:0 0.00030938235 0.32 AML other m 2018-08-22T10:00:01.65
GU.ENR.HHN. ML:0 0.0003202999 1.616 AML other m 2018-08-22T10:00:02.02
GU.STV.HHN. ML:0.7 6.670087E-5 0.3008 AML other m 2018-08-22T10:00:03.64
GU.STV.HHE. ML:1 0.0001094566 0.6016 AML other m 2018-08-22T10:00:06.39
GU.GBOS.HHN. ML:1 6.4777485E-5 0.48 AML other m 2018-08-22T10:00:07.59
GU.GBOS.HHE. ML:0.9 4.726381E-5 1.7376 AML other m 2018-08-22T10:00:07.96
GU.PZZ.HHN. ML:0.8 2.7428685E-5 0.4992 AML other m 2018-08-22T10:00:13.50
GU.PZZ.HHE. ML:1.1 4.56928E-5 0.2816 AML other m 2018-08-22T10:00:13.64
GU.PCP.HHE. ML:1.1 1.4024945E-5 1.6992 AML other m 2018-08-22T10:00:28.06
GU.PCP.HHN. ML:1.3 2.4625745E-5 0.5248 AML other m 2018-08-22T10:00:32.27
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