Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 05-09-2016 and time 00:45:28 (Italy) in region 7 km E Norcia (PG)

A magnitude ML 2.1 earthquake occured in region: 7 km E Norcia (PG), on

  • 04-09-2016 22:45:28 (UTC)
  • 05-09-2016 00:45:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7670, 13.1770 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
Norcia PG 7 4957 4957
Arquata del Tronto AP 10 1178 6135
Accumoli RI 10 667 6802
Cascia PG 14 3217 10019
Castelsantangelo sul Nera MC 14 281 10300
Montegallo AP 15 523 10823
Cittareale RI 17 482 11305
Preci PG 17 724 12029
Amatrice RI 18 2657 14686
Acquasanta Terme AP 19 2916 17602
Montemonaco AP 19 604 18206
Visso MC 20 1107 19313
Ussita MC 20 444 19757

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km E of Foligno (57155 inhabitants)
45 Km W of Teramo (54892 inhabitants)
49 Km E of Terni (111501 inhabitants)
50 Km NW of L'Aquila (69753 inhabitants)
75 Km SE of Perugia (166134 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
91 Km W of Pescara (121014 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
93 Km NW of Chieti (51815 inhabitants)
95 Km NE of Tivoli (56533 inhabitants)
96 Km E of Viterbo (67173 inhabitants)
99 Km S of Ancona (100861 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 2.1 2016-09-04
22:45:28		 42.767 13.1767 15 2016-09-04
22:56:15		 Sala Sismica INGV-Roma 28290371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-09-04 22:45:28 ± 0.08
Latitude 42.7670 ± 0.0036
Longitude 13.1767 ± 0.0061
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 28290371

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 423
Semi-minor axis of confidence ellipse (meter) 253
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) 420.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.35523
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 14
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 3
Type of magnitude ML
Reference to an origin 28290371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-09-04 22:56:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2016-09-04T22:45:41.04 0.1 undecidable manual S 115 38.3283 99 0.04 95
IV.ARRO.EHZ. 2016-09-04T22:45:41.17 0.1 undecidable manual S 238 39.4272 99 -0.13 92
IV.CSP1.EHZ. 2016-09-04T22:45:40.50 0.1 undecidable manual S 4 36.1416 100 0.08 94
IV.RM33.EHZ. 2016-09-04T22:45:38.51 0.1 undecidable manual S 174 28.749 104 0 96
IV.ASSB.HHZ. 2016-09-04T22:45:38.99 3.0 undecidable manual S -0.13 0
IV.OFFI.HHZ. 2016-09-04T22:45:37.99 3.0 undecidable manual S 0.07 0
IV.T1215.EHZ. 2016-09-04T22:45:37.61 0.1 undecidable manual S 279 25.3524 107 -0.02 97
IV.GIGS.HHZ. 2016-09-04T22:45:37.99 3.0 undecidable manual S -1.65 0
IV.T1243.HHZ. 2016-09-04T22:45:36.80 0.1 undecidable manual S 109 23.4543 110 -0.35 90
IV.LNSS.HHZ. 2016-09-04T22:45:36.65 0.1 undecidable manual S 211 21.3675 113 0.03 98
IV.ARRO.EHZ. 2016-09-04T22:45:36.17 0.6 undecidable manual P 238 39.4272 99 0.4 44
IV.T1299.EHZ. 2016-09-04T22:45:35.71 0.1 undecidable manual S 150 17.0718 120 0.12 97
IV.MC2.EHZ. 2016-09-04T22:45:35.62 0.1 undecidable manual S 4 16.0728 123 0.25 94
IV.TERO.HHZ. 2016-09-04T22:45:35.06 1.0 undecidable manual P 115 38.3283 99 -0.54 21
IV.T1244.EHZ. 2016-09-04T22:45:34.28 0.1 undecidable manual S 96 9.879 140 0.16 97
IV.CSP1.EHZ. 2016-09-04T22:45:34.65 0.3 undecidable manual P 4 36.1416 100 -0.61 62
IV.T1204.EHZ. 2016-09-04T22:45:34.99 0.1 undecidable manual S 131 15.2736 124 -0.19 95
IV.T1202.EHZ. 2016-09-04T22:45:33.88 0.1 undecidable manual S 151 8.0808 146 0.06 99
IV.T1243.HHZ. 2016-09-04T22:45:33.38 0.1 undecidable manual P 109 23.4543 110 0.01 97
IV.RM33.EHZ. 2016-09-04T22:45:33.40 0.6 undecidable manual P 174 28.749 104 -0.76 39
IV.T1242.HHZ. 2016-09-04T22:45:33.41 0.1 undecidable manual S 18 7.2927 149 -0.31 95
IV.T1215.EHZ. 2016-09-04T22:45:33.99 0.1 undecidable manual P 279 25.3524 107 0.34 91
IV.NRCA.HHZ. 2016-09-04T22:45:33.35 0.1 undecidable manual S 326 8.9799 143 -0.61 88
IV.MC2.EHZ. 2016-09-04T22:45:32.54 0.1 undecidable manual P 4 16.0728 123 0.19 95
IV.LNSS.HHZ. 2016-09-04T22:45:32.77 0.1 undecidable manual P 211 21.3675 113 -0.29 92
IV.T1204.EHZ. 2016-09-04T22:45:32.51 0.1 undecidable manual P 131 15.2736 124 0.27 94
IV.T1299.EHZ. 2016-09-04T22:45:32.74 0.1 undecidable manual P 150 17.0718 120 0.27 94
IV.T1242.HHZ. 2016-09-04T22:45:31.57 0.1 undecidable manual P 18 7.2927 149 0.18 97
IV.NRCA.HHZ. 2016-09-04T22:45:31.54 0.1 undecidable manual P 326 8.9799 143 0 100
IV.T1244.EHZ. 2016-09-04T22:45:31.65 0.1 undecidable manual P 96 9.879 140 0.02 100
IV.T1202.EHZ. 2016-09-04T22:45:31.73 0.1 undecidable manual P 151 8.0808 146 0.27 95
IV.SMA1.EHZ. 2016-09-04T22:45:27.22 3.0 positive manual P -0.07 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T1202.EHE. ML:2.2 0.0017250000000000002 0.82 AML other m 2016-09-04T22:45:34.04
IV.T1202.EHN. ML:2.3 0.00196 0.82 AML other m 2016-09-04T22:45:34.04
IV.T1242.HHE. ML:2.2 0.001665 0.34 AML other m 2016-09-04T22:45:33.52
IV.T1242.HHN. ML:2.3 0.002225 0.16 AML other m 2016-09-04T22:45:33.94
IV.T1244.EHN. ML:1.7 0.000507 0.14 AML other m 2016-09-04T22:45:34.31
IV.T1244.EHE. ML:1.8 0.000639 0.16 AML other m 2016-09-04T22:45:34.44
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
Waveforms Seismic signals in miniseed + resp format Download