Earthquake (quarry blast) with magnitude of ML 0.3 on date 31-08-2020 and time 08:38:37 (Italy) in region 4 km S Cagli (PU)

A magnitude ML 0.3 (quarry blast) earthquake occured in region: 4 km S Cagli (PU), on

  • 31-08-2020 06:38:37 (UTC)
  • 31-08-2020 08:38:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.51, 12.66 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
Cagli PU 4 8731 8731
Cantiano PU 5 2245 10976
Frontone PU 7 1300 12276
Serra Sant'Abbondio PU 10 1027 13303
Acqualagna PU 12 4393 17696
Scheggia e Pascelupo PG 12 1393 19089
Piobbico PU 15 2029 21118
Pergola PU 16 6333 27451
Costacciaro PG 18 1216 28667
Fermignano PU 18 8596 37263
Sassoferrato AN 18 7285 44548
Gubbio PG 19 32216 76764
Pietralunga PG 19 2111 78875
Apecchio PU 20 1882 80757

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km SW of Fano (60888 inhabitants)
49 Km SW of Pesaro (94582 inhabitants)
50 Km NE of Perugia (166134 inhabitants)
62 Km S of Rimini (147750 inhabitants)
62 Km N of Foligno (57155 inhabitants)
63 Km E of Arezzo (99543 inhabitants)
71 Km W of Ancona (100861 inhabitants)
77 Km SE of Cesena (96758 inhabitants)
93 Km SE of Forlì (117913 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 0.3 2020-08-31
06:38:37
43.51 12.66 1 2020-11-19
12:37:07
Bollettino Sismico Italiano INGV 84740621
Reviewed
Rev100
ML 0.4 2020-08-31
06:38:36
43.51 12.68 8 2020-08-31
08:03:04
Sala Sismica INGV-Roma 82489511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-31 06:38:37 ± 0.12
Latitude 43.51 ± 0.01
Longitude 12.66 ± 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 84740621

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 850
Semi-minor axis of confidence ellipse (meter) 740
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 349
Circular confidence region, given by single value of horizontal uncertainty (meter) 850
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.2671
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 82489511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-31 08:03:04

ML:0.3

Field Value
Value 0.3
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 84740621
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-11-15 02:56:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
XK.SELL.HHZ. 2020-08-31T06:40:40.77 3.0 undecidable manual Sg 7.07 0
GU.CIRO.HHZ. 2020-08-31T06:40:39.37 3.0 undecidable manual Sn 0.95 0
IV.IST3.HHZ. 2020-08-31T06:40:31.83 3.0 undecidable manual Sg 4.48 0
IV.SERS.HHZ. 2020-08-31T06:40:28.31 3.0 undecidable manual Sn -4.86 0
MN.TIP.HHZ. 2020-08-31T06:40:27.74 3.0 undecidable manual Sn -3.1 0
IV.MILN.HNZ. 2020-08-31T06:40:22.36 3.0 undecidable manual Sg 9.66 0
IV.SPS2.HHZ. 2020-08-31T06:40:20.71 3.0 undecidable manual Sn -3.75 0
SL.KOGS.BHZ. 2020-08-31T06:40:13.62 3.0 undecidable manual Sn 0.12 0
IV.ISPIC.HNZ. 2020-08-31T06:40:10.03 3.0 undecidable manual Pg 10.37 0
IV.CAGR.HHZ. 2020-08-31T06:40:02.61 3.0 undecidable manual Pg 15.02 0
AC.VLO.HHZ. 2020-08-31T06:39:54.05 3.0 negative manual Pg 10.5 0
IV.MNTV.HNZ. 2020-08-31T06:39:50.77 3.0 undecidable manual Sg 3.63 0
IV.CMPR.HHZ. 2020-08-31T06:39:45.91 3.0 undecidable manual Sn -7.3 0
IV.FIU.EHZ. 2020-08-31T06:39:31.11 3.0 undecidable manual Sg 1.38 0
IV.RIBO.EHZ.01 2020-08-31T06:39:23.27 3.0 undecidable manual Sg 1.8 0
IV.MCRV.HHZ. 2020-08-31T06:39:05.00 3.0 undecidable manual Pn -2.99 0
IV.MTMR.HNZ. 2020-08-31T06:39:00.45 3.0 undecidable manual Pn -5.08 0
IT.MCLF.HNZ. 2020-08-31T06:38:50.45 3.0 undecidable manual P -2.86 0
IV.RCAV.EHZ. 2020-08-31T06:38:45.94 3.0 undecidable manual Pn -3.77 0
IV.MURB.HNZ. 2020-08-31T06:38:43.44 0.3 undecidable manual P 201 0.2671 91 0.45 67
IV.FOSV.EHN. 2020-08-31T06:38:41.46 0.3 undecidable manual P 161 0.2311 91 -0.71 61
IV.ATFO.HHZ. 2020-08-31T06:38:41.04 0.3 undecidable manual P 203 0.1592 92 0.47 68
IV.ATPI.EHZ. 2020-08-31T06:38:41.07 0.3 undecidable manual P 251 0.1943 91 -0.3 70
IV.MPAG.HNE. 2020-08-31T06:38:40.20 0.3 undecidable manual P 33 0.1376 92 0.09 74
IV.ATPC.HNE. 2020-08-31T06:38:40.34 0.1 undecidable manual P 258 0.1484 92 0 100
IV.ATBU.HNE. 2020-08-31T06:38:39.06 0.1 undecidable manual P 245 0.0872 93 0.09 99
IV.SSFR.HNZ. 2020-08-31T06:38:39.58 0.1 undecidable manual P 130 0.1187 92 -0.11 98
IV.NARO.HHZ. 2020-08-31T06:38:39.33 0.3 undecidable manual P 331 0.1124 92 -0.21 72
IV.FRON.EHZ. 2020-08-31T06:38:38.43 0.1 undecidable manual P 84 0.0504 95 0.26 96
IV.ATSC.EHZ. 2020-08-31T06:38:38.96 0.1 undecidable manual P 166 0.0917 93 -0.12 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FRON.EHN. ML:0 0.0003390401 0.1408 AML other m 2020-08-31T06:38:40.49
IV.FRON.EHE. ML:0 0.00012850456 0.16 AML other m 2020-08-31T06:38:40.64
IV.NARO.HHE. ML:0.3 2.9519754E-5 0.08 AML other m 2020-08-31T06:38:42.64
IV.NARO.HHN. ML:0.2 2.29277335E-5 0.0608 AML other m 2020-08-31T06:38:45.84
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