Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.4 on date 02-08-2017 and time 16:42:07 (Italy) in region 4 km E Ussita (MC)

A magnitude ML 0.4 earthquake occured in region: 4 km E Ussita (MC), on

  • 02-08-2017 14:42:07 (UTC)
  • 02-08-2017 16:42:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9570, 13.1830 at 15 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Ussita MC 4 444 444
Bolognola MC 6 142 586
Castelsantangelo sul Nera MC 7 281 867
Visso MC 8 1107 1974
Acquacanina MC 8 121 2095
Fiastra MC 9 559 2654
Fiordimonte MC 12 202 2856
Montefortino FM 13 1178 4034
Sarnano MC 13 3264 7298
Montemonaco AP 13 604 7902
Pievebovigliana MC 14 866 8768
Amandola FM 14 3629 12397
Pieve Torina MC 15 1458 13855
Preci PG 15 724 14579
Monte Cavallo MC 15 145 14724
Montegallo AP 18 523 15247
Gualdo MC 18 815 16062
Muccia MC 18 915 16977
Cessapalombo MC 18 512 17489
Comunanza AP 19 3166 20655
Norcia PG 20 4957 25612

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
54 Km NW of Teramo (54892 inhabitants)
62 Km NE of Terni (111501 inhabitants)
67 Km E of Perugia (166134 inhabitants)
70 Km N of L'Aquila (69753 inhabitants)
78 Km SW of Ancona (100861 inhabitants)
93 Km NW of Montesilvano (53738 inhabitants)
100 Km S of Fano (60888 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 0.4 2017-08-02
14:42:07		 42.9568 13.183 15 2017-08-02
15:09:52		 Sala Sismica INGV-Roma 48610891
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-08-02 14:42:07 ± 0.12
Latitude 42.9568 ± 0.0036
Longitude 13.1830 ± 0.0049
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 48610891

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 429
Semi-minor axis of confidence ellipse (meter) 117
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 232
Circular confidence region, given by single value of horizontal uncertainty (meter) 430.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 87
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.16368
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 48610891
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-08-02 15:09:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FRON.EHZ. 2017-08-02T14:42:18.09 3.0 positive manual Pn 0.39 0
IV.CSP1.EHZ. 2017-08-02T14:42:14.00 0.1 undecidable manual S 7 15.0738 123 -0.06 98
IV.T1219.EHZ. 2017-08-02T14:42:14.86 0.1 undecidable manual S 307 18.1707 116 0.08 97
IV.T1216.EHZ. 2017-08-02T14:42:13.76 0.3 undecidable manual S 241 15.1737 123 -0.33 70
IV.NRCA.HHE. 2017-08-02T14:42:13.88 0.6 undecidable manual S 202 14.7741 124 -0.12 49
IV.FDMO.HHZ. 2017-08-02T14:42:13.22 0.1 undecidable manual S 319 11.7771 132 -0.14 97
IV.MMO1.EHZ. 2017-08-02T14:42:13.46 0.6 undecidable manual S 119 13.2756 128 -0.22 47
IV.T1256.HHZ. 2017-08-02T14:42:12.40 0.1 undecidable manual S 32 6.4935 151 -0.09 99
IV.MC2.EHZ. 2017-08-02T14:42:12.51 0.1 undecidable manual S 174 5.0949 157 0.2 96
IV.CSP1.EHZ. 2017-08-02T14:42:11.22 0.1 undecidable manual P 7 15.0738 123 0.05 99
IV.T1216.EHZ. 2017-08-02T14:42:11.29 0.1 undecidable manual P 241 15.1737 123 0.1 97
IV.SMA1.EHZ. 2017-08-02T14:42:11.50 3.0 undecidable manual P 0
IV.NRCA.HHE. 2017-08-02T14:42:11.14 0.1 undecidable manual P 202 14.7741 124 0.01 99
IV.T1219.EHZ. 2017-08-02T14:42:11.60 0.1 undecidable manual P 307 18.1707 116 0.02 98
IV.MMO1.EHZ. 2017-08-02T14:42:10.84 0.1 undecidable manual P 119 13.2756 128 -0.1 96
IV.T1256.HHZ. 2017-08-02T14:42:10.30 0.1 undecidable manual P 32 6.4935 151 0.04 100
IV.MC2.EHZ. 2017-08-02T14:42:10.42 0.1 undecidable manual P 174 5.0949 157 0.26 96
IV.FDMO.HHZ. 2017-08-02T14:42:10.80 0.1 undecidable manual P 319 11.7771 132 0.04 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T1256.HHN. ML:0.4 0.000029250000000000003 0.22 AML other m 2017-08-02T14:42:12.73
IV.FDMO.HHN. ML:0.6 0.000039764385 0.14 AML other m 2017-08-02T14:42:13.69
IV.CSP1.EHN. ML:-0.2 0.00000448051 1.68 AML other m 2017-08-02T14:42:14.64
IV.T1219.EHN. ML:0.5 0.00002051884 0.096 AML other m 2017-08-02T14:42:15.01
IV.T1219.EHE. ML:0.3 0.00001312628 0.976 AML other m 2017-08-02T14:42:14.72
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download