Earthquake (quarry blast) with magnitude of ML 0.9 on date 31-07-2020 and time 10:17:10 (UTC) in region 1 km W Poggio San Marcello (AN)

A magnitude ML 0.9 (quarry blast) earthquake occured in region: 1 km W Poggio San Marcello (AN), on

  • 31-07-2020 10:17:10 (UTC)
  • 31-07-2020 12:17:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.51, 13.07 at 11 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
Poggio San Marcello AN 1 693 693
Castelplanio AN 2 3540 4233
Montecarotto AN 2 1987 6220
Rosora AN 3 1985 8205
Serra de' Conti AN 5 3746 11951
Mergo AN 5 1037 12988
Maiolati Spontini AN 5 6248 19236
Monte Roberto AN 6 3061 22297
Castelbellino AN 7 4947 27244
Cupramontana AN 8 4756 32000
Serra San Quirico AN 8 2850 34850
Barbara AN 9 1368 36218
San Paolo di Jesi AN 10 933 37151
Ostra Vetere AN 11 3311 40462
Arcevia AN 11 4612 45074
Belvedere Ostrense AN 11 2234 47308
Staffolo AN 13 2253 49561
San Marcello AN 13 2057 51618
Castelleone di Suasa AN 13 1676 53294
Ostra AN 14 6875 60169
Apiro MC 14 2280 62449
Jesi AN 14 40399 102848
Genga AN 14 1797 104645
San Lorenzo in Campo PU 15 3414 108059
Poggio San Vicino MC 15 246 108305
Morro d'Alba AN 15 1903 110208
Corinaldo AN 16 4998 115206
Monsano AN 16 3405 118611
Trecastelli AN 18 7625 126236
Sassoferrato AN 19 7285 133521
Cingoli MC 19 10352 143873
Monte San Vito AN 19 6848 150721
Fratte Rosa PU 19 966 151687
Santa Maria Nuova AN 19 4179 155866
Pergola PU 20 6333 162199

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km S of Fano (60888 inhabitants)
38 Km W of Ancona (100861 inhabitants)
46 Km S of Pesaro (94582 inhabitants)
68 Km NE of Foligno (57155 inhabitants)
71 Km NE of Perugia (166134 inhabitants)
74 Km SE of Rimini (147750 inhabitants)
96 Km E of Arezzo (99543 inhabitants)
96 Km SE of Cesena (96758 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 0.9 2020-07-31
10:17:10
43.51 13.07 11 2020-07-31
10:22:26
Sala Sismica INGV-Roma 81505021
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-31 10:17:10 ± 0.28
Latitude 43.51 ± 0.01
Longitude 13.07 ± 0.02
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type quarry blast
Origin ID 81505021

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1664
Semi-minor axis of confidence ellipse (meter) 575
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 52
Circular confidence region, given by single value of horizontal uncertainty (meter) 1660
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 247
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.39031
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 6
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 81505021
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-31 10:22:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PE3.EHZ. 2020-07-31T10:17:27.98 3.0 undecidable manual S -0.35 0
IV.CRTC.HHZ. 2020-07-31T10:17:25.90 3.0 undecidable manual S 0.78 0
IV.PIEI.HHZ. 2020-07-31T10:17:24.31 0.6 undecidable manual S 274 0.3903 50 -0.15 46
IV.NARO.HHZ. 2020-07-31T10:17:23.65 1.0 undecidable manual S 286 0.3696 50 -0.21 23
IV.SNTG.HHZ. 2020-07-31T10:17:20.97 0.3 undecidable manual S 201 0.2725 50 -0.01 73
IV.FDMO.HHZ. 2020-07-31T10:17:20.17 3.0 positive manual P -0.87 0
IV.SSFR.HHZ. 2020-07-31T10:17:19.68 0.3 undecidable manual S 251 0.223 50 0.18 71
IV.PIEI.HHZ. 2020-07-31T10:17:19.24 1.0 negative manual P 274 0.3903 50 0.74 19
IV.EL6.EHZ. 2020-07-31T10:17:18.37 0.6 undecidable manual S 173 0.1826 118 0.08 49
IV.NARO.HHZ. 2020-07-31T10:17:18.64 1.0 undecidable manual P 286 0.3696 50 0.49 22
IV.SNTG.HHZ. 2020-07-31T10:17:16.29 0.6 undecidable manual P 201 0.2725 50 -0.2 47
IV.ARVD.HHZ. 2020-07-31T10:17:15.56 0.6 undecidable manual S 263 0.0953 135 -0.01 50
IV.EL6.EHZ. 2020-07-31T10:17:15.00 1.0 undecidable manual P 173 0.1826 118 0.06 25
IV.SSFR.HHZ. 2020-07-31T10:17:15.29 0.6 undecidable manual P 251 0.223 50 -0.35 46
IV.ARVD.HHZ. 2020-07-31T10:17:13.33 0.1 negative manual P 263 0.0953 135 -0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SSFR.HHE. ML:1.2 0.0001008 0.16 AML other m 2020-07-31T10:17:20.88
IV.SSFR.HHN. ML:1.2 0.0001009 1.32 AML other m 2020-07-31T10:17:21.11
IV.SNTG.HHN. ML:0.9 3.86E-5 1.82 AML other m 2020-07-31T10:17:21.07
IV.SNTG.HHE. ML:0.8 2.895E-5 0.52 AML other m 2020-07-31T10:17:22.35
IV.CRTC.HHN. ML:1.1 5.585E-5 0.54 AML other m 2020-07-31T10:17:26.66
IV.NARO.HHE. ML:0.5 1.245E-5 1.2 AML other m 2020-07-31T10:17:27.95
IV.PIEI.HHN. ML:0.7 1.435E-5 1.56 AML other m 2020-07-31T10:17:28.79
IV.PIEI.HHE. ML:0.9 2.29E-5 1.02 AML other m 2020-07-31T10:17:28.28
IV.FDMO.HHE. ML:0.6 1.068E-5 0.14 AML other m 2020-07-31T10:17:30.81
IV.FDMO.HHN. ML:0.8 1.415E-5 0.32 AML other m 2020-07-31T10:17:30.78
IV.NARO.HHN. ML:0.5 1.055E-5 0.44 AML other m 2020-07-31T10:17:31.93
IV.CRTC.HHE. ML:1.2 6.435E-5 0.34 AML other m 2020-07-31T10:17:36.93
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