Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.5 on date 04-01-2017 and time 12:34:45 (Italy) in region 4 km E Ussita (MC)

A magnitude ML 0.5 earthquake occured in region: 4 km E Ussita (MC), on

  • 04-01-2017 11:34:45 (UTC)
  • 04-01-2017 12:34:45 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9460, 13.1890 at 11 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 6 281 867
Visso MC 8 1107 1974
Acquacanina MC 10 121 2095
Fiastra MC 10 559 2654
Montemonaco AP 12 604 3258
Montefortino FM 13 1178 4436
Fiordimonte MC 13 202 4638
Sarnano MC 14 3264 7902
Amandola FM 14 3629 11531
Preci PG 14 724 12255
Pievebovigliana MC 16 866 13121
Pieve Torina MC 16 1458 14579
Monte Cavallo MC 16 145 14724
Montegallo AP 17 523 15247
Gualdo MC 18 815 16062
Comunanza AP 19 3166 19228
Norcia PG 19 4957 24185
Cessapalombo MC 19 512 24697
Muccia MC 19 915 25612

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
53 Km NW of Teramo (54892 inhabitants)
62 Km NE of Terni (111501 inhabitants)
67 Km E of Perugia (166134 inhabitants)
68 Km N of L'Aquila (69753 inhabitants)
79 Km SW of Ancona (100861 inhabitants)
92 Km NW of Montesilvano (53738 inhabitants)
99 Km NW of Pescara (121014 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 0.5 2017-01-04
11:34:45		 42.946 13.1887 11 2017-01-04
11:40:48		 Sala Sismica INGV-Roma 38474891
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-01-04 11:34:45 ± 0.09
Latitude 42.9460 ± 0.0036
Longitude 13.1887 ± 0.0049
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 38474891

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 381
Semi-minor axis of confidence ellipse (meter) 332
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 214
Circular confidence region, given by single value of horizontal uncertainty (meter) 380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 139
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.17986
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.0
Num. used stations 1
Type of magnitude ML
Reference to an origin 38474891
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-01-04 11:40:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TRIV.HHZ. 2017-01-04T11:35:09.40 3.0 negative manual Pn -0.01 0
IV.EL6.EHZ. 2017-01-04T11:34:54.59 3.0 undecidable manual Pg 0.48 0
IV.T1245.HHZ. 2017-01-04T11:34:50.24 0.1 undecidable manual S 180 9.879 138 -0.03 100
IV.T1212.EHZ. 2017-01-04T11:34:50.22 3.0 undecidable manual S -0.04 0
IV.MMO1.EHZ. 2017-01-04T11:34:50.75 0.1 undecidable manual S 115 12.3765 131 -0.12 98
IV.FDMO.HHZ. 2017-01-04T11:34:50.95 0.1 undecidable manual S 321 12.9759 130 -0.09 98
IV.MC2.EHZ. 2017-01-04T11:34:49.26 0.3 undecidable manual S 180 3.7962 161 0.11 74
IV.T1219.EHZ. 2017-01-04T11:34:49.61 3.0 negative manual Pn 0.15 0
IV.T1220.EHZ. 2017-01-04T11:34:49.73 0.6 positive manual P 336 19.9689 50 0.04 49
IV.FDMO.HHZ. 2017-01-04T11:34:48.62 0.1 undecidable manual P 321 12.9759 130 0.06 99
IV.T1216.EHZ. 2017-01-04T11:34:48.76 0.1 undecidable manual P 246 15.0738 126 -0.13 97
IV.T1245.HHZ. 2017-01-04T11:34:48.09 0.1 undecidable manual P 180 9.879 138 -0.02 100
IV.MMO1.EHZ. 2017-01-04T11:34:48.48 0.1 undecidable manual P 115 12.3765 131 0.02 100
IV.MC2.EHZ. 2017-01-04T11:34:47.67 0.1 negative manual P 180 3.7962 161 0.2 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T1245.HHE. ML:0.5 0.00003895 1.34 AML other m 2017-01-04T11:34:50.18
IV.T1245.HHN. ML:0.5 0.0000357 0.84 AML other m 2017-01-04T11:34:54.76
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