Earthquake (quarry blast) with magnitude of ML 1.6 on date 31-07-2020 and time 08:04:00 (UTC) in region 4 km S Serra San Quirico (AN)

A magnitude ML 1.6 (quarry blast) earthquake occured in region: 4 km S Serra San Quirico (AN), on

  • 31-07-2020 08:04:00 (UTC)
  • 31-07-2020 10:04:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.41, 13.01 at 7 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
Serra San Quirico AN 4 2850 2850
Genga AN 6 1797 4647
Poggio San Vicino MC 7 246 4893
Mergo AN 7 1037 5930
Rosora AN 9 1985 7915
Cupramontana AN 10 4756 12671
Cerreto d'Esi AN 10 3817 16488
Apiro MC 10 2280 18768
Castelplanio AN 11 3540 22308
Arcevia AN 11 4612 26920
Maiolati Spontini AN 12 6248 33168
Fabriano AN 12 31480 64648
Sassoferrato AN 12 7285 71933
Poggio San Marcello AN 13 693 72626
Monte Roberto AN 13 3061 75687
Montecarotto AN 14 1987 77674
Castelbellino AN 14 4947 82621
San Paolo di Jesi AN 14 933 83554
Staffolo AN 15 2253 85807
Serra de' Conti AN 15 3746 89553
Matelica MC 17 9981 99534
Cingoli MC 17 10352 109886
Esanatoglia MC 18 2034 111920
Barbara AN 19 1368 113288
Gagliole MC 20 620 113908

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km W of Ancona (100861 inhabitants)
48 Km S of Fano (60888 inhabitants)
56 Km S of Pesaro (94582 inhabitants)
56 Km NE of Foligno (57155 inhabitants)
61 Km NE of Perugia (166134 inhabitants)
81 Km SE of Rimini (147750 inhabitants)
91 Km E of Arezzo (99543 inhabitants)
99 Km NE of Terni (111501 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.6 2020-07-31
08:04:00
43.41 13.01 7 2020-07-31
08:12:44
Sala Sismica INGV-Roma 81503921
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-31 08:04:00 ± 0.1
Latitude 43.41 ± 0.00
Longitude 13.01 ± 0.01
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type quarry blast
Origin ID 81503921

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 508
Semi-minor axis of confidence ellipse (meter) 317
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 43
Circular confidence region, given by single value of horizontal uncertainty (meter) 510
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 155
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 35
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) 0.72395
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 19
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 81503921
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-31 08:12:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CAMP.HHZ. 2020-07-31T08:04:30.44 3.0 undecidable manual S -2.45 0
IV.MC2.EHZ. 2020-07-31T08:04:19.90 1.0 undecidable manual S 165 0.5171 50 0.67 20
IV.ASSB.HHZ. 2020-07-31T08:04:17.19 0.1 undecidable manual S 215 0.4479 50 0 94
IV.ATVO.HHZ. 2020-07-31T08:04:17.16 0.1 undecidable manual S 266 0.438 50 0.27 90
IV.FDMO.HHZ. 2020-07-31T08:04:15.01 0.1 undecidable manual S 171 0.3795 50 -0.14 92
IV.MURB.HHZ. 2020-07-31T08:04:15.96 0.1 undecidable manual S 247 0.3813 50 0.74 80
IV.GAVE.EHZ. 2020-07-31T08:04:14.51 0.6 negative manual P 187 0.724 50 -0.39 41
IV.CSP1.EHZ. 2020-07-31T08:04:14.91 0.1 undecidable manual S 156 0.3498 50 0.62 83
IV.ATCC.EHZ. 2020-07-31T08:04:14.47 0.1 undecidable manual S 230 0.3507 50 0.17 93
IV.ATFO.HHZ. 2020-07-31T08:04:13.74 0.1 undecidable manual S 262 0.3202 102 0.53 86
IV.MPAG.HNE. 2020-07-31T08:04:12.34 0.1 undecidable manual S 320 0.2824 103 0.56 87
IV.MF5.EHZ. 2020-07-31T08:04:12.16 0.6 undecidable manual P 142 0.536 50 0.47 42
IV.MC2.EHZ. 2020-07-31T08:04:11.06 1.0 positive manual P 165 0.5171 50 -0.3 22
IV.ATSC.EHN. 2020-07-31T08:04:10.08 0.1 undecidable manual S 273 0.2338 106 0.11 96
IV.ATVO.HHZ. 2020-07-31T08:04:09.81 0.3 negative manual P 266 0.438 50 -0.2 68
IV.ASSB.HHZ. 2020-07-31T08:04:09.65 0.1 negative manual P 215 0.4479 50 -0.53 83
IV.ATCC.EHZ. 2020-07-31T08:04:08.09 0.3 positive manual P 230 0.3507 50 -0.43 66
IV.FOSV.EHZ. 2020-07-31T08:04:08.82 0.1 undecidable manual S 237 0.214 107 -0.42 91
IV.FDMO.HHZ. 2020-07-31T08:04:08.35 0.6 negative manual P 171 0.3795 50 -0.66 40
IV.MURB.HHZ. 2020-07-31T08:04:08.78 0.1 negative manual P 247 0.3813 50 -0.27 90
IV.SSFR.HHZ. 2020-07-31T08:04:07.51 0.1 undecidable manual S 279 0.1655 112 0.03 99
IV.ATFO.HHZ. 2020-07-31T08:04:07.75 0.6 positive manual P 262 0.3202 102 -0.14 47
IV.SNTG.HHZ. 2020-07-31T08:04:07.52 0.1 undecidable manual S 197 0.1637 112 0.1 97
IV.CSP1.EHZ. 2020-07-31T08:04:07.95 1.0 positive manual P 156 0.3498 50 -0.56 21
IV.MPAG.HNE. 2020-07-31T08:04:06.87 0.1 undecidable manual P 320 0.2824 103 -0.19 93
IV.FRON.EHE. 2020-07-31T08:04:05.67 0.3 undecidable manual P 297 0.2311 106 -0.28 70
IV.ARVD.HHZ. 2020-07-31T08:04:05.39 0.1 undecidable manual S 331 0.0989 124 0.2 97
IV.EL6.EHZ. 2020-07-31T08:04:05.98 0.1 undecidable manual S 140 0.107 122 0.55 87
IV.FOSV.EHZ. 2020-07-31T08:04:05.26 0.1 undecidable manual P 237 0.214 107 -0.34 93
IV.ATSC.EHN. 2020-07-31T08:04:05.82 0.1 undecidable manual P 273 0.2338 106 -0.2 95
IV.SNTG.HHZ. 2020-07-31T08:04:04.47 0.1 undecidable manual P 197 0.1637 112 -0.07 99
IV.SSFR.HHZ. 2020-07-31T08:04:04.59 0.1 negative manual P 279 0.1655 112 0.01 99
IV.MMUR.HNZ. 2020-07-31T08:04:03.10 0.1 undecidable manual S 345 0.0315 155 -0.31 97
IV.ARVD.HHZ. 2020-07-31T08:04:03.31 0.1 undecidable manual P 331 0.0989 124 0.06 100
IV.EL6.EHZ. 2020-07-31T08:04:03.37 0.3 positive manual P 140 0.107 122 -0.03 76
IV.MMUR.HNZ. 2020-07-31T08:04:02.12 0.6 positive manual P 345 0.0315 155 -0.11 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EL6.EHE. ML:1.8 0.0008375 1.64 AML other m 2020-07-31T08:04:07.96
IV.EL6.EHN. ML:1.9 0.0009735 0.38 AML other m 2020-07-31T08:04:07.99
IV.SNTG.HHN. ML:1.6 0.0003855 0.48 AML other m 2020-07-31T08:04:08.25
IV.SNTG.HNE. ML:1.5 0.000267 0.44 AML other m 2020-07-31T08:04:08.24
IV.SNTG.HHE. ML:1.4 0.0002265 0.44 AML other m 2020-07-31T08:04:08.25
IV.SSFR.HNN. ML:1.8 0.000502 0.26 AML other m 2020-07-31T08:04:09.82
IV.SNTG.HNN. ML:1.7 0.0004335 0.7 AML other m 2020-07-31T08:04:10.54
IV.SSFR.HHN. ML:1.7 0.0004485 1.74 AML other m 2020-07-31T08:04:10.95
IV.SSFR.HNE. ML:1.7 0.0004165 1.76 AML other m 2020-07-31T08:04:11.08
IV.SSFR.HHE. ML:1.7 0.0003895 1.74 AML other m 2020-07-31T08:04:11.09
IV.ATCC.EHN. ML:1.8 0.0002475 0.18 AML other m 2020-07-31T08:04:14.76
IV.ATCC.EHE. ML:1.9 0.000289 1.8 AML other m 2020-07-31T08:04:15.93
IV.ATFO.HHE. ML:1.6 0.000148 0.36 AML other m 2020-07-31T08:04:15.94
IV.FDMO.HHE. ML:1.6 0.0001385 0.16 AML other m 2020-07-31T08:04:15.91
IV.MURB.HHE. ML:2.2 0.0005375 0.24 AML other m 2020-07-31T08:04:16.54
IV.FDMO.HHN. ML:1.5 0.0001085 0.82 AML other m 2020-07-31T08:04:16.75
IV.MURB.HHN. ML:2 0.0003505 0.24 AML other m 2020-07-31T08:04:17.24
IV.ATFO.HHN. ML:1.3 7.625E-5 0.4 AML other m 2020-07-31T08:04:17.44
IV.ASSB.HHE. ML:1.5 7.77E-5 0.3 AML other m 2020-07-31T08:04:19.32
IV.ATVO.HHE. ML:1.3 5.315E-5 1 AML other m 2020-07-31T08:04:19.13
IV.ASSB.HHN. ML:1.4 7.64E-5 0.26 AML other m 2020-07-31T08:04:22.20
IV.ATVO.HHN. ML:1.2 3.95E-5 1.72 AML other m 2020-07-31T08:04:23.92
IV.GAVE.EHE. ML:1.7 7.27E-5 0.22 AML other m 2020-07-31T08:04:27.67
IV.GAVE.EHN. ML:1.6 5.5E-5 0.26 AML other m 2020-07-31T08:04:30.21
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