Earthquake (quarry blast) with magnitude of ML 0.9 on date 07-12-2021 and time 08:57:23 (Italy) in region 3 km S Cagli (PU)

A magnitude ML 0.9 (quarry blast) earthquake occured in region: 3 km S Cagli (PU), on

  • 07-12-2021 07:57:23 (UTC)
  • 07-12-2021 08:57:23 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.518, 12.659 at 8 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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 3 8731 8731
Cantiano PU 5 2245 10976
Frontone PU 7 1300 12276
Serra Sant'Abbondio PU 10 1027 13303
Acqualagna PU 11 4393 17696
Scheggia e Pascelupo PG 13 1393 19089
Piobbico PU 14 2029 21118
Pergola PU 15 6333 27451
Fermignano PU 18 8596 36047
Costacciaro PG 18 1216 37263
Sassoferrato AN 19 7285 44548
Gubbio PG 19 32216 76764
Apecchio PU 20 1882 78646
Pietralunga PG 20 2111 80757
Urbania PU 20 7099 87856

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km SW of Fano (60888 inhabitants)
48 Km SW of Pesaro (94582 inhabitants)
51 Km NE of Perugia (166134 inhabitants)
61 Km S of Rimini (147750 inhabitants)
63 Km N of Foligno (57155 inhabitants)
63 Km E of Arezzo (99543 inhabitants)
70 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
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.9 2021-12-07
07:57:23
43.5183 12.6587 8 2021-12-07
08:04:32
Sala Sismica INGV-Roma 98229781
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-07 07:57:23 ± 0.08
Latitude 43.5183 ± 0.0036
Longitude 12.6587 ± 0.0037
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type quarry blast
Origin ID 98229781

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 385
Semi-minor axis of confidence ellipse (meter) 107
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 200
Circular confidence region, given by single value of horizontal uncertainty (meter) 390
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 64
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 26
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) 0.04856
Epicentral distance of station farthest from the epicenter (degree) 0.37322
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 98229781
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-07 08:04:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EL6.EHZ. 2021-12-07T07:57:31.93 0.3 undecidable manual P 120 0.3732 50 -0.22 90
IV.SNTG.HHZ. 2021-12-07T07:57:31.24 0.3 undecidable manual P 142 0.3336 50 -0.23 91
IV.ATLO.HNZ. 2021-12-07T07:57:30.14 0.3 undecidable manual P 222 0.2734 104 -0.04 95
IV.MURB.HHZ. 2021-12-07T07:57:30.22 0.3 undecidable manual P 201 0.2734 104 0.04 96
IV.ATFO.HHZ. 2021-12-07T07:57:30.92 0.3 undecidable manual S 203 0.1646 113 0.13 96
IV.SSFR.HHZ. 2021-12-07T07:57:29.34 0.3 undecidable manual S 132 0.1214 120 0.04 98
IV.TB03.DHZ.01 2021-12-07T07:57:29.35 0.3 undecidable manual P 237 0.2149 108 0.41 89
IV.TB02.DHZ.01 2021-12-07T07:57:29.63 0.3 undecidable manual P 231 0.2338 107 0.29 91
IV.ATVO.HHZ. 2021-12-07T07:57:29.15 0.3 undecidable manual P 233 0.2275 107 -0.07 96
IV.NARO.HHZ. 2021-12-07T07:57:29.07 0.3 undecidable manual S 329 0.1088 123 0.19 96
IV.FOSV.HNZ. 2021-12-07T07:57:29.28 0.3 undecidable manual P 162 0.2356 106 -0.1 95
IV.ARVD.HHZ. 2021-12-07T07:57:28.98 0.3 undecidable manual P 96 0.2059 109 0.23 93
IV.ATFO.HHZ. 2021-12-07T07:57:28.00 0.3 undecidable manual P 203 0.1646 113 0.12 96
IV.ATSC.EHZ. 2021-12-07T07:57:28.43 0.3 undecidable manual S 168 0.0962 126 -0.06 98
IV.ATBU.HNZ. 2021-12-07T07:57:28.50 0.3 undecidable manual S 242 0.0908 127 0.18 96
IV.ATPI.EHZ. 2021-12-07T07:57:28.62 0.3 undecidable manual P 250 0.1979 109 0.04 97
IV.ATPC.HHZ. 2021-12-07T07:57:27.79 0.3 undecidable manual P 256 0.1511 115 0.17 95
IV.FRON.EHZ. 2021-12-07T07:57:27.09 0.3 undecidable manual S 91 0.0486 145 -0.09 99
IV.SSFR.HHZ. 2021-12-07T07:57:27.00 0.3 undecidable manual P 132 0.1214 120 -0.03 99
IV.PIEI.HHZ. 2021-12-07T07:57:27.61 0.3 undecidable manual S 281 0.0917 127 -0.73 82
IV.MPAG.EHZ. 2021-12-07T07:57:27.61 0.3 undecidable manual P 33 0.1331 118 0.36 92
IV.NARO.HHZ. 2021-12-07T07:57:26.74 0.3 undecidable manual P 329 0.1088 123 -0.04 98
IV.ATSC.EHZ. 2021-12-07T07:57:26.33 0.3 undecidable manual P 168 0.0962 126 -0.23 95
IV.ATBU.HNZ. 2021-12-07T07:57:26.43 0.3 undecidable manual P 242 0.0908 127 -0.03 99
IV.PIEI.HHZ. 2021-12-07T07:57:26.11 0.3 undecidable manual P 281 0.0917 127 -0.36 92
IV.FRON.EHZ. 2021-12-07T07:57:25.78 0.3 undecidable manual P 91 0.0486 145 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FRON.EHE. ML:0 0.0002795 1.02 AML other m 2021-12-07T07:57:27.53
IV.PIEI.HHE. ML:0 0.0001525 1.16 AML other m 2021-12-07T07:57:27.25
IV.FRON.EHN. ML:0 0.0003785 1.3 AML other m 2021-12-07T07:57:27.87
IV.PIEI.HHN. ML:0 7.81E-5 0.56 AML other m 2021-12-07T07:57:28.77
IV.SSFR.HHN. ML:1.2 0.000177 0.32 AML other m 2021-12-07T07:57:30.16
IV.SSFR.HNN. ML:1.4 0.000322 0.98 AML other m 2021-12-07T07:57:30.17
IV.SSFR.HHE. ML:1.2 0.000184 0.82 AML other m 2021-12-07T07:57:30.65
IV.SSFR.HNE. ML:1.4 0.0003115 0.46 AML other m 2021-12-07T07:57:31.45
IV.PIEI.HNE. ML:0.8 9.400537E-5 0.0768 AML other m 2021-12-07T07:57:27.00
IV.PIEI.HNN. ML:0.7 6.3102801E-5 0.1088 AML other m 2021-12-07T07:57:27.81
IV.NARO.HHE. ML:0.6 5.73575E-5 0.0576 AML other m 2021-12-07T07:57:29.70
IV.NARO.HHN. ML:0.5 3.8835337E-5 0.0576 AML other m 2021-12-07T07:57:29.63
IV.ATFO.HHE. ML:0.8 4.813758E-5 0.2816 AML other m 2021-12-07T07:57:31.56
IV.ATFO.HHN. ML:0.6 3.658213E-5 0.1152 AML other m 2021-12-07T07:57:31.44
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