INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 0.9 on date 20-09-2018 and time 12:56:10 (Italy) in region 7 km S Serra Sant'Abbondio (PU)

A magnitude ML 0.9 earthquake occured in region: 7 km S Serra Sant'Abbondio (PU), on

  • 20-09-2018 10:56:10 (UTC)
  • 20-09-2018 12:56:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.43, 12.76 at 14 km depth.

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

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 Sant'Abbondio PU 7 1027 1027
Sassoferrato AN 8 7285 8312
Scheggia e Pascelupo PG 8 1393 9705
Costacciaro PG 9 1216 10921
Frontone PU 10 1300 12221
Sigillo PG 11 2404 14625
Cantiano PU 12 2245 16870
Genga AN 14 1797 18667
Fossato di Vico PG 15 2840 21507
Fabriano AN 16 31480 52987
Cagli PU 16 8731 61718
Pergola PU 16 6333 68051
Arcevia AN 16 4612 72663
Gubbio PG 17 32216 104879

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km NE of Perugia (166134 inhabitants)
50 Km SW of Fano (60888 inhabitants)
53 Km N of Foligno (57155 inhabitants)
55 Km S of Pesaro (94582 inhabitants)
64 Km W of Ancona (100861 inhabitants)
71 Km E of Arezzo (99543 inhabitants)
72 Km S of Rimini (147750 inhabitants)
89 Km SE of Cesena (96758 inhabitants)
97 Km N 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
Rev 100 ML 0.9 2018-09-20
10:56:10
43.43 12.76 14 2018-09-20
11:07:32
Sala Sismica INGV-Roma 61148561
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-09-20 10:56:10 ± 0.13
Latitude 43.43 ± 0.00
Longitude 12.76 ± 0.01
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 61148561

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 480
Semi-minor axis of confidence ellipse (meter) 84
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 30
Circular confidence region, given by single value of horizontal uncertainty (meter) 480
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 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.01439
Epicentral distance of station farthest from the epicenter (degree) 0.2653
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 61148561
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-09-20 11:07:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EL6.EHZ. 2018-09-20T10:56:21.61 0.6 undecidable manual S 112 0.2653 100 0.43 45
IV.ATPI.EHZ. 2018-09-20T10:56:21.43 0.3 undecidable manual S 274 0.2635 100 0.32 67
IV.MURB.HNZ. 2018-09-20T10:56:20.96 0.6 undecidable manual S 226 0.2419 101 0.47 43
IV.SNTG.HHZ. 2018-09-20T10:56:19.73 0.6 undecidable manual S 144 0.2176 104 -0.07 48
IV.MPAG.HNZ. 2018-09-20T10:56:19.29 0.6 undecidable manual S 359 0.1979 106 0.06 49
IV.ATFO.HHZ. 2018-09-20T10:56:18.14 0.6 undecidable manual S 245 0.1538 114 0.14 48
IV.PIEI.HHZ. 2018-09-20T10:56:18.78 0.6 undecidable manual S 302 0.1961 106 -0.4 45
IV.FOSV.EHZ. 2018-09-20T10:56:17.31 0.6 undecidable manual S 181 0.1367 119 -0.23 48
IV.ARVD.HHZ. 2018-09-20T10:56:17.79 0.6 undecidable manual S 63 0.1448 117 0.02 49
IV.SNTG.HHZ. 2018-09-20T10:56:16.17 0.3 undecidable manual P 144 0.2176 104 0.18 71
IV.EL6.EHZ. 2018-09-20T10:56:16.24 0.1 undecidable manual P 112 0.2653 100 -0.55 84
IV.ATPI.EHZ. 2018-09-20T10:56:16.83 0.6 undecidable manual P 274 0.2635 100 0.08 47
IV.MURB.HNZ. 2018-09-20T10:56:16.12 0.1 undecidable manual P 226 0.2419 101 -0.27 92
IV.FRON.EHZ. 2018-09-20T10:56:16.38 0.6 undecidable manual S 342 0.0908 135 -0.08 49
IV.ARVD.HHZ. 2018-09-20T10:56:15.31 0.3 undecidable manual P 63 0.1448 117 0.49 67
IV.PIEI.HHZ. 2018-09-20T10:56:15.43 0.1 undecidable manual P 302 0.1961 106 -0.2 94
IV.MPAG.HNZ. 2018-09-20T10:56:15.74 0.6 undecidable manual P 359 0.1979 106 0.08 48
IV.SSFR.HHZ. 2018-09-20T10:56:15.48 0.6 undecidable manual S 69 0.0144 172 0.06 50
IV.ATFO.HHZ. 2018-09-20T10:56:15.00 0.1 undecidable manual P 245 0.1538 114 0.04 97
IV.FRON.EHZ. 2018-09-20T10:56:14.08 0.1 positive manual P 342 0.0908 135 0.01 100
IV.FOSV.EHZ. 2018-09-20T10:56:14.58 0.1 positive manual P 181 0.1367 119 -0.11 97
IV.SSFR.HHZ. 2018-09-20T10:56:13.53 0.1 negative manual P 69 0.0144 172 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SSFR.HHN. ML:1.1 0.00015118335 0.1984 AML other m 2018-09-20T10:56:17.30
IV.SSFR.HNN. ML:1.3 0.00028347513 0.0576 AML other m 2018-09-20T10:56:16.68
IV.SSFR.HNE. ML:1.3 0.000245618765 0.0448 AML other m 2018-09-20T10:56:16.69
IV.SSFR.HHE. ML:1.1 0.00017916925 0.1792 AML other m 2018-09-20T10:56:16.40
IV.FRON.EHN. ML:1 0.000105649205 0.064 AML other m 2018-09-20T10:56:17.06
IV.FRON.EHE. ML:1 9.576192E-5 0.1024 AML other m 2018-09-20T10:56:16.53
IV.FOSV.EHN. ML:1 8.5337685E-5 0.1792 AML other m 2018-09-20T10:56:17.40
IV.FOSV.EHE. ML:1 7.895105E-5 0.1152 AML other m 2018-09-20T10:56:17.38
IV.ATFO.HHE. ML:0.6 2.7650985E-5 0.1408 AML other m 2018-09-20T10:56:18.31
IV.ATFO.HHN. ML:0.6 2.7519125E-5 0.16 AML other m 2018-09-20T10:56:19.27
IV.ARVD.HHE. ML:0.3 1.6048655E-5 0.1408 AML other m 2018-09-20T10:56:18.40
IV.ARVD.HHN. ML:0.3 1.27494485E-5 0.1408 AML other m 2018-09-20T10:56:19.08
IV.PIEI.HHE. ML:1 5.9388065E-5 0.0768 AML other m 2018-09-20T10:56:19.18
IV.PIEI.HHN. ML:0.8 3.7181725E-5 0.0576 AML other m 2018-09-20T10:56:19.23
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