Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 03-08-2017 and time 03:29:52 (Italy) in region 6 km NW Accumoli (RI)

A magnitude ML 1.3 earthquake occured in region: 6 km NW Accumoli (RI), on

  • 03-08-2017 01:29:52 (UTC)
  • 03-08-2017 03:29:52 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7280, 13.1880 at 13 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
Accumoli RI 6 667 667
Arquata del Tronto AP 10 1178 1845
Norcia PG 11 4957 6802
Cittareale RI 12 482 7284
Amatrice RI 14 2657 9941
Cascia PG 14 3217 13158
Montegallo AP 18 523 13681
Acquasanta Terme AP 19 2916 16597
Castelsantangelo sul Nera MC 19 281 16878

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km W of Teramo (54892 inhabitants)
45 Km NW of L'Aquila (69753 inhabitants)
47 Km SE of Foligno (57155 inhabitants)
48 Km E of Terni (111501 inhabitants)
78 Km SE of Perugia (166134 inhabitants)
82 Km W of Montesilvano (53738 inhabitants)
89 Km W of Pescara (121014 inhabitants)
89 Km NE of Guidonia Montecelio (88673 inhabitants)
91 Km W of Chieti (51815 inhabitants)
91 Km NE of Tivoli (56533 inhabitants)
95 Km E of Viterbo (67173 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 1.3 2017-08-03
01:29:52		 42.7283 13.1877 13 2017-08-03
01:41:56		 Sala Sismica INGV-Roma 48630351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-08-03 01:29:52 ± 0.07
Latitude 42.7283 ± 0.0027
Longitude 13.1877 ± 0.0049
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 48630351

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 460
Semi-minor axis of confidence ellipse (meter) 35
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 249
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.35343
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 48630351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-08-03 01:41:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.T1219.EHZ. 2017-08-03T01:30:05.15 0.3 undecidable manual S 338 39.2274 94 -0.33 68
IV.FDMO.HHZ. 2017-08-03T01:30:04.21 0.3 undecidable manual S 347 35.1426 95 -0.18 71
IV.OFFI.HHZ. 2017-08-03T01:30:02.04 3.0 undecidable manual P 0.29 0
IV.RM33.EHZ. 2017-08-03T01:30:01.39 0.3 undecidable manual S 175 24.4533 99 -0.15 73
IV.T1216.EHZ. 2017-08-03T01:30:00.44 0.3 undecidable manual S 323 22.6551 100 -0.63 64
IV.CSP1.EHZ. 2017-08-03T01:30:00.90 3.0 negative manual P 0.23 0
IV.MMO1.EHZ. 2017-08-03T01:30:00.85 0.3 undecidable manual S 31 22.0668 101 -0.08 74
IV.ARRO.EHZ. 2017-08-03T01:30:00.20 3.0 positive manual P 0.05 0
IV.T1219.EHZ. 2017-08-03T01:30:00.54 0.6 undecidable manual P 338 39.2274 94 0.53 44
IV.SMA1.EHZ. 2017-08-03T01:29:59.14 0.3 undecidable manual S 132 16.1727 111 -0.28 72
IV.T1245.HHZ. 2017-08-03T01:29:59.20 0.3 undecidable manual S 0 14.2746 116 0.27 72
IV.FDMO.HHZ. 2017-08-03T01:29:59.46 0.3 undecidable manual P 347 35.1426 95 0.09 73
IV.T1221.EHZ. 2017-08-03T01:29:59.08 0.3 undecidable manual P 298 31.3464 96 0.29 70
IV.TERO.HHZ. 2017-08-03T01:29:58.30 3.0 undecidable manual P -1.61 0
IV.T1299.EHZ. 2017-08-03T01:29:58.51 0.3 undecidable manual S 143 12.9759 120 -0.12 75
IV.T1213.HNZ. 2017-08-03T01:29:57.06 0.3 undecidable manual S 266 5.0949 153 -0.11 77
IV.T1216.EHZ. 2017-08-03T01:29:57.83 0.6 undecidable manual P 323 22.6551 100 0.37 47
IV.MMO1.EHZ. 2017-08-03T01:29:57.35 0.3 undecidable manual P 31 22.0668 101 -0.03 75
IV.RM33.EHZ. 2017-08-03T01:29:57.67 0.3 undecidable manual P 175 24.4533 99 -0.06 74
IV.T1218.EHZ. 2017-08-03T01:29:57.77 0.3 undecidable manual S 222 8.7801 136 0.03 77
IV.MC2.EHZ. 2017-08-03T01:29:57.47 3.0 negative manual P 0.12 0
IV.SMA1.EHZ. 2017-08-03T01:29:56.59 0.1 undecidable manual P 132 16.1727 111 0.09 100
IV.T1245.HHZ. 2017-08-03T01:29:56.36 0.3 undecidable manual P 0 14.2746 116 0.14 75
IV.T1299.EHZ. 2017-08-03T01:29:56.12 0.3 undecidable manual P 143 12.9759 120 0.07 76
IV.NRCA.HNZ. 2017-08-03T01:29:56.15 0.3 undecidable manual P 333 13.0758 120 0.08 76
IV.LNSS.HHZ. 2017-08-03T01:29:56.91 0.3 undecidable manual P 221 18.3705 106 0.09 75
IV.T1218.EHZ. 2017-08-03T01:29:55.64 0.3 undecidable manual P 222 8.7801 136 0.1 76
IV.T1214.EHZ. 2017-08-03T01:29:55.13 0.3 undecidable manual P 26 3.8961 159 0 78
IV.T1213.HNZ. 2017-08-03T01:29:55.29 0.3 undecidable manual P 266 5.0949 153 0.08 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T1218.HNE. ML:1.5 0.0003285 1.04 AML other m 2017-08-03T01:29:57.95
IV.T1218.EHE. ML:1.4 0.00027600000000000004 0.14 AML other m 2017-08-03T01:29:57.88
IV.T1218.HNN. ML:1.6 0.0005420000000000001 1.84 AML other m 2017-08-03T01:29:58.00
IV.T1218.EHN. ML:1.7 0.0005665000000000001 1.86 AML other m 2017-08-03T01:29:58.00
IV.T1245.HHE. ML:1.7 0.000441 1.66 AML other m 2017-08-03T01:29:59.86
IV.T1214.EHN. ML:1.2 0.00021900000000000004 0.24 AML other m 2017-08-03T01:29:59.83
IV.T1214.EHE. ML:1.1 0.000187 0.44 AML other m 2017-08-03T01:29:59.99
IV.T1245.HHN. ML:1.6 0.0003745 0.22 AML other m 2017-08-03T01:30:00.91
IV.T1216.EHE. ML:1.2 0.0001071 0.42 AML other m 2017-08-03T01:30:00.97
IV.T1216.EHN. ML:1.2 0.00009920000000000001 0.14 AML other m 2017-08-03T01:30:01.45
IV.RM33.EHE. ML:0.9 0.000045799999999999995 0.24 AML other m 2017-08-03T01:30:01.50
IV.RM33.EHN. ML:0.8 0.0000401 0.28 AML other m 2017-08-03T01:30:01.57
IV.FDMO.HHN. ML:0.8 0.000025450000000000002 0.08 AML other m 2017-08-03T01:30:05.42
IV.FDMO.HHE. ML:0.9 0.0000289 0.72 AML other m 2017-08-03T01:30:05.91
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