INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 0.9 on date 16-04-2018 and time 04:03:51 (Italy) in region 6 km W Gubbio (PG)

A magnitude ML 0.9 earthquake occured in region: 6 km W Gubbio (PG), on

  • 16-04-2018 02:03:51 (UTC)
  • 16-04-2018 04:03:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.37, 12.5 at 9 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
Gubbio PG 7 32216 32216
Pietralunga PG 9 2111 34327
Scheggia e Pascelupo PG 14 1393 35720
Montone PG 14 1680 37400
Cantiano PU 15 2245 39645
Umbertide PG 16 16681 56326
Costacciaro PG 17 1216 57542
Sigillo PG 20 2404 59946

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NE of Perugia (166134 inhabitants)
49 Km NW of Foligno (57155 inhabitants)
51 Km E of Arezzo (99543 inhabitants)
67 Km SW of Fano (60888 inhabitants)
68 Km SW of Pesaro (94582 inhabitants)
77 Km S of Rimini (147750 inhabitants)
86 Km W of Ancona (100861 inhabitants)
87 Km S of Cesena (96758 inhabitants)
91 Km N of Terni (111501 inhabitants)
95 Km E of Siena (53903 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 2018-04-16
02:03:51
43.37 12.5 9 2018-04-16
02:08:46
Sala Sismica INGV-Roma 55678251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-04-16 02:03:51 ± 0.11
Latitude 43.37 ± 0.00
Longitude 12.50 ± 0.01
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 55678251

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 437
Semi-minor axis of confidence ellipse (meter) 417
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 73
Circular confidence region, given by single value of horizontal uncertainty (meter) 440
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
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) 0.33904
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 55678251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-04-16 02:08:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2018-04-16T02:03:58.66 0.6 undecidable manual S 8 0.1628 116 0.64 43
IV.PARC.HHZ. 2018-04-16T02:03:58.65 0.6 undecidable manual P 325 0.3354 50 0.14 47
IV.SNTG.HHZ. 2018-04-16T02:03:58.33 1.0 positive manual P 110 0.339 50 -0.24 23
IV.ATMI.HHZ. 2018-04-16T02:03:58.83 0.3 undecidable manual S -0.15 1.34
IV.ATCC.EHZ. 2018-04-16T02:03:56.18 1.0 undecidable manual P 152 0.2131 110 0.08 24
IV.ATPI.EHZ. 2018-04-16T02:03:56.03 0.6 undecidable manual S 316 0.107 126 -0.12 49
IV.MURB.HHZ. 2018-04-16T02:03:56.41 0.6 undecidable manual S 172 0.1124 125 0.09 50
IV.NARO.HHZ. 2018-04-16T02:03:56.52 0.6 undecidable manual P 13 0.2428 108 -0.21 47
IV.FOSV.EHZ. 2018-04-16T02:03:55.92 1.0 negative manual P 113 0.2023 111 0.03 25
IV.SSFR.HHZ. 2018-04-16T02:03:55.86 0.1 positive manual P 73 0.2113 110 -0.2 95
IV.PIEI.HHZ. 2018-04-16T02:03:55.08 0.1 undecidable manual P 8 0.1628 116 0 100
IV.FRON.EHZ. 2018-04-16T02:03:55.95 0.6 positive manual P 48 0.2149 110 -0.2 48
IV.APEC.HHZ. 2018-04-16T02:03:55.76 0.1 undecidable manual P 342 0.1943 112 0.05 99
IV.ATPI.EHZ. 2018-04-16T02:03:54.02 0.6 positive manual P 316 0.107 126 0.02 50
IV.MURB.HHZ. 2018-04-16T02:03:54.30 0.1 undecidable manual P 172 0.1124 125 0.21 97
IV.ATVO.HHZ. 2018-04-16T02:03:54.84 0.6 undecidable manual S 276 0.0719 138 -0.3 48
IV.ATVO.HHZ. 2018-04-16T02:03:53.29 1.0 undecidable manual P 276 0.0719 138 -0.12 25
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATVO.HHN. ML:0.9 0.00013415 1.42 AML other m 2018-04-16T02:03:54.89
IV.ATVO.HHE. ML:0.8 9.51E-5 0.3 AML other m 2018-04-16T02:03:55.36
IV.ATPI.EHN. ML:0.8 7.315E-5 0.16 AML other m 2018-04-16T02:03:56.40
IV.ATPI.EHE. ML:0.8 7.425E-5 0.3 AML other m 2018-04-16T02:03:56.50
IV.MURB.HHE. ML:1.4 0.0003235 1.68 AML other m 2018-04-16T02:03:57.84
IV.PIEI.HHE. ML:1 9.19E-5 0.24 AML other m 2018-04-16T02:03:58.86
IV.PIEI.HHN. ML:0.7 4.605E-5 1.86 AML other m 2018-04-16T02:03:59.97
IV.MURB.HHN. ML:1.3 0.0002175 1.7 AML other m 2018-04-16T02:03:59.10
IV.APEC.HHE. ML:1 6.43E-5 0.56 AML other m 2018-04-16T02:03:59.90
IV.SSFR.HHN. ML:1.1 8.98E-5 0.84 AML other m 2018-04-16T02:04:00.39
IV.SSFR.HHE. ML:1.3 0.0001325 0.92 AML other m 2018-04-16T02:04:00.53
IV.ATCC.EHN. ML:1.1 7.915E-5 1.64 AML other m 2018-04-16T02:04:00.13
IV.NARO.HHE. ML:0.6 1.85E-5 1.1 AML other m 2018-04-16T02:04:01.23
IV.FOSV.EHE. ML:0.7 3.33E-5 1.66 AML other m 2018-04-16T02:04:01.00
IV.ATCC.EHE. ML:1 6.15E-5 1.3 AML other m 2018-04-16T02:04:01.97
IV.FOSV.EHN. ML:0.9 4.955E-5 0.32 AML other m 2018-04-16T02:04:02.21
IV.APEC.HHN. ML:0.7 3.675E-5 0.42 AML other m 2018-04-16T02:04:02.25
IV.NARO.HHN. ML:0.6 2.04E-5 0.5 AML other m 2018-04-16T02:04:04.67
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