Earthquake (quarry blast) with magnitude of ML 1.2 on date 28-08-2019 and time 12:00:52 (Italy) in region 1 km W Robilante (CN)

A magnitude ML 1.2 (quarry blast) earthquake occured in region: 1 km W Robilante (CN), on

  • 28-08-2019 10:00:52 (UTC)
  • 28-08-2019 12:00:52 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.29, 7.5 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 3 2761 5067
Borgo San Dalmazzo CN 4 12468 17535
Roaschia CN 4 107 17642
Vernante CN 6 1178 18820
Boves CN 6 9835 28655
Roccasparvera CN 7 741 29396
Vignolo CN 8 2600 31996
Valdieri CN 8 935 32931
Gaiola CN 9 582 33513
Moiola CN 9 234 33747
Entracque CN 10 774 34521
Peveragno CN 10 5543 40064
Rittana CN 10 109 40173
Cervasca CN 11 5013 45186
Valloriate CN 11 109 45295
Limone Piemonte CN 12 1485 46780
Bernezzo CN 12 4104 50884
Cuneo CN 12 56081 106965
Beinette CN 14 3423 110388
Chiusa di Pesio CN 15 3676 114064
Caraglio CN 15 6836 120900
Valgrana CN 16 786 121686
Demonte CN 16 2003 123689
Pianfei CN 19 2202 125891
Monterosso Grana CN 19 505 126396
Montemale di Cuneo CN 19 241 126637
Margarita CN 19 1441 128078
Roccaforte Mondovì CN 20 2085 130163

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km SW of Cuneo (56081 inhabitants)
57 Km NW of Sanremo (54807 inhabitants)
78 Km W of Savona (61345 inhabitants)
80 Km S of Moncalieri (57294 inhabitants)
88 Km SW of Asti (76202 inhabitants)
88 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
Rev 1000 ML 1.2 2019-08-28
10:00:52
44.29 7.5 1 2019-11-13
14:31:08
Bollettino Sismico Italiano INGV 73708481
Rev 100 ML 1.2 2019-08-28
10:00:53
44.26 7.51 4 2019-08-28
10:05:49
Sala Sismica INGV-Roma 71877061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-28 10:00:52 ± 0.15
Latitude 44.29 ± 0.01
Longitude 7.50 ± 0.01
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 73708481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1210
Semi-minor axis of confidence ellipse (meter) 950
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) 1210
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 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.08813
Epicentral distance of station farthest from the epicenter (degree) 0.78511
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 73708481
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-11-07 14:48:37

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 71877061
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-28 10:05:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.PCP.HHZ. 2019-08-28T10:01:09.95 0.3 undecidable manual P 71 0.7851 50 0.9 52
IV.QLNO.HHZ. 2019-08-28T10:01:05.76 0.6 undecidable manual P 87 0.6043 50 -0.19 45
GU.BHB.HHN. 2019-08-28T10:01:04.90 0.1 undecidable manual P 343 0.5675 50 -0.43 87
GU.RORO.HHE. 2019-08-28T10:01:02.38 0.3 undecidable manual P 114 0.4434 91 -0.31 68
IV.IMI.HHN. 2019-08-28T10:01:02.95 0.3 undecidable manual P 144 0.4748 91 -0.44 66
GU.PZZ.HHE. 2019-08-28T10:01:00.61 0.3 undecidable manual P 308 0.3489 91 0.02 74
FR.SAOF.HHZ.00 2019-08-28T10:00:59.61 0.3 undecidable manual P 173 0.3094 91 -0.1 74
GU.GBOS.HHZ. 2019-08-28T10:00:58.61 0.1 undecidable manual P 102 0.2473 91 0.26 96
GU.STV.HHZ. 2019-08-28T10:00:56.00 0.6 undecidable manual P 249 0.134 92 0.17 50
GU.ENR.HHZ. 2019-08-28T10:00:55.01 0.1 positive manual P 221 0.0881 93 0.21 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.GBOS.HHE. ML:1.1 7.905E-5 0.3 AML other m 2019-08-28T10:00:59.03
GU.STV.HHN. ML:0.8 8.685E-5 0.88 AML other m 2019-08-28T10:00:59.51
GU.STV.HHE. ML:1 0.000123 1.58 AML other m 2019-08-28T10:01:02.81
GU.GBOS.HHN. ML:1.6 0.0002235 0.56 AML other m 2019-08-28T10:01:04.28
FR.SAOF.HHE.00 ML:1.1 5.36E-5 0.54 AML other m 2019-08-28T10:01:05.72
FR.SAOF.HHN.00 ML:1.1 5.5E-5 1.04 AML other m 2019-08-28T10:01:07.65
IV.QLNO.HHN. ML:1.3 3.345E-5 0.76 AML other m 2019-08-28T10:01:15.53
IV.QLNO.HHE. ML:1.3 3.495E-5 1.16 AML other m 2019-08-28T10:01:21.41
GU.PCP.HHE. ML:1.4 2.905E-5 0.32 AML other m 2019-08-28T10:01:23.35
GU.PCP.HHN. ML:1.3 2.72E-5 1 AML other m 2019-08-28T10:01:29.47
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