INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.1 on date 20-04-2017 and time 07:07:41 (Italy) in region 3 km SW Costacciaro (PG)

A magnitude ML 1.1 earthquake occured in region: 3 km SW Costacciaro (PG), on

  • 20-04-2017 05:07:41 (UTC)
  • 20-04-2017 07:07:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.34, 12.7 at 12 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
Costacciaro PG 3 1216 1216
Sigillo PG 3 2404 3620
Fossato di Vico PG 7 2840 6460
Scheggia e Pascelupo PG 8 1393 7853
Gubbio PG 10 32216 40069
Gualdo Tadino PG 14 15208 55277
Cantiano PU 16 2245 57522
Fabriano AN 17 31480 89002
Sassoferrato AN 17 7285 96287
Serra Sant'Abbondio PU 18 1027 97314
Frontone PU 20 1300 98614

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km NE of Perugia (166134 inhabitants)
42 Km N of Foligno (57155 inhabitants)
62 Km SW of Fano (60888 inhabitants)
66 Km S of Pesaro (94582 inhabitants)
68 Km E of Arezzo (99543 inhabitants)
73 Km W of Ancona (100861 inhabitants)
81 Km S of Rimini (147750 inhabitants)
86 Km N of Terni (111501 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 Date and Time (UTC) Latitude Longitude Magnitude Depth (km) Published time (UTC) Author Location ID
Rev 100 2017-04-20
05:07:41
43.34 12.7 ML 1.1 12 2017-04-20
05:22:15
Sala Sismica INGV-Roma 44120281
Best location and best magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-04-20 05:07:41 ± 0.03
Latitude 43.34 ± 0.00
Longitude 12.70 ± 0.00
Depth (km) 12 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 44120281

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 155
Semi-minor axis of confidence ellipse (meter) 99
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 248
Circular confidence region, given by single value of horizontal uncertainty (meter) 160
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 84
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.07
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.35793
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 44120281
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-04-20 05:22:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
CH.MUGIO.HHZ. 2017-04-20T05:09:13.60 3.0 undecidable manual Sn 5.12 0
GU.RNCA.HHZ. 2017-04-20T05:09:08.76 3.0 undecidable manual Sn 5.37 0
IV.LTRZ.HNZ. 2017-04-20T05:09:02.39 3.0 undecidable manual Sn -1.76 0
IV.EUCT.HNZ. 2017-04-20T05:08:59.24 3.0 undecidable manual Sn -2.83 0
IV.PETRA.HHZ. 2017-04-20T05:08:51.60 3.0 undecidable manual Pn 0.71 0
IV.PTRJ.HNZ. 2017-04-20T05:08:48.82 3.0 undecidable manual Sg 12.15 0
IV.QLNO.HHZ. 2017-04-20T05:08:42.64 3.0 negative manual Pg 19.26 0
IV.CET2.HHZ. 2017-04-20T05:08:34.72 3.0 negative manual Pn 5.61 0
CH.FUORN.HHZ. 2017-04-20T05:08:24.46 3.0 undecidable manual Pg 9.94 0
IV.PIGN.HHZ. 2017-04-20T05:08:17.55 3.0 positive manual Pg 12.76 0
IV.ARRO.EHZ. 2017-04-20T05:08:16.92 3.0 undecidable manual Sn -0.76 0
IV.PTRJ.HHZ. 2017-04-20T05:08:12.36 3.0 undecidable manual Pg 9.98 0
IV.COLB.HHZ. 2017-04-20T05:08:10.83 3.0 undecidable manual Pn 0.8 0
IV.LAV9.HNZ. 2017-04-20T05:08:03.57 3.0 positive manual Pn 0.94 0
IV.SAMA.HHZ. 2017-04-20T05:08:01.58 3.0 positive manual Pn -0.32 0
IV.T1219.EHZ. 2017-04-20T05:07:49.14 1.0 undecidable manual P 142 0.3579 93 -0.16 23
IV.ASSB.HHZ. 2017-04-20T05:07:48.05 0.3 negative manual P 186 0.2968 93 -0.2 70
IV.ATVO.HHZ. 2017-04-20T05:07:46.91 1.0 negative manual P 282 0.2194 96 -0.02 25
IV.SNTG.HHZ. 2017-04-20T05:07:46.54 1.0 positive manual P 115 0.1925 98 0.06 25
IV.FRON.EHZ. 2017-04-20T05:07:46.33 1.0 undecidable manual P 5 0.1808 99 0.05 25
IV.MURB.HHZ. 2017-04-20T05:07:45.80 0.6 negative manual P 240 0.1493 105 0.05 50
IV.ATCC.EHZ. 2017-04-20T05:07:45.90 0.1 positive manual P 196 0.1592 103 -0.01 100
IV.ATFO.HHZ. 2017-04-20T05:07:45.07 0.1 negative manual P 287 0.0989 124 0.1 99
IV.SSFR.HHZ. 2017-04-20T05:07:45.11 0.6 negative manual P 31 0.1142 117 -0.09 50
IV.FOSV.EHZ. 2017-04-20T05:07:44.58 0.6 negative manual P 135 0.0612 143 0.09 50
IV.BRSN.EHZ. 2017-04-20T05:07:45.01 3.0 undecidable manual P -1.55 0
MN.TRI.HHZ. 2017-04-20T05:07:40.27 3.0 negative manual P -2.85 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHE. ML:1.9 0.0001105 0.18 AML other m 2017-04-20T05:08:09.34
IV.ARRO.EHN. ML:1.9 0.000111 0.08 AML other m 2017-04-20T05:08:19.52
IV.ATVO.HHN. ML:0.9 5.025E-5 0.42 AML other m 2017-04-20T05:08:11.99
IV.ATVO.HHE. ML:1 5.61E-5 1.38 AML other m 2017-04-20T05:07:51.22
IV.FOSV.EHN. ML:1 0.00011855 0.34 AML other m 2017-04-20T05:07:46.47
IV.FOSV.EHE. ML:1 0.000124 0.34 AML other m 2017-04-20T05:07:46.65
IV.MURB.HHE. ML:1.4 0.0002315 0.3 AML other m 2017-04-20T05:07:49.11
IV.MURB.HHN. ML:1.5 0.000243 0.42 AML other m 2017-04-20T05:07:49.37
IV.PTRJ.HHN. ML:3 0.000166 0.42 AML other m 2017-04-20T05:08:49.63
IV.PTRJ.HHE. ML:3 0.0001565 0.78 AML other m 2017-04-20T05:08:50.50
IV.SAMA.HHN. ML:3 0.000433 0.08 AML other m 2017-04-20T05:08:28.02
IV.SAMA.HHE. ML:3.2 0.0005915 0.06 AML other m 2017-04-20T05:08:29.78
IV.SSFR.HHE. ML:1 0.0001075 0.16 AML other m 2017-04-20T05:07:49.31
IV.SSFR.HHN. ML:1 0.000108 0.34 AML other m 2017-04-20T05:07:48.38
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