Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 01-04-2017 and time 10:23:53 (Italy) in region 6 km W Arquata del Tronto (AP)

A magnitude ML 1.3 earthquake occured in region: 6 km W Arquata del Tronto (AP), on

  • 01-04-2017 08:23:53 (UTC)
  • 01-04-2017 10:23:53 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7760, 13.2250 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
Arquata del Tronto AP 6 1178 1178
Accumoli RI 9 667 1845
Norcia PG 11 4957 6802
Montegallo AP 12 523 7325
Castelsantangelo sul Nera MC 15 281 7606
Acquasanta Terme AP 15 2916 10522
Montemonaco AP 16 604 11126
Amatrice RI 17 2657 13783
Cittareale RI 18 482 14265
Cascia PG 18 3217 17482
Preci PG 19 724 18206
Ussita MC 20 444 18650

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km W of Teramo (54892 inhabitants)
47 Km E of Foligno (57155 inhabitants)
49 Km N of L'Aquila (69753 inhabitants)
53 Km E of Terni (111501 inhabitants)
77 Km E of Perugia (166134 inhabitants)
81 Km W of Montesilvano (53738 inhabitants)
88 Km W of Pescara (121014 inhabitants)
91 Km NW of Chieti (51815 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
97 Km S of Ancona (100861 inhabitants)
97 Km NE of Tivoli (56533 inhabitants)
100 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 2017-04-01
08:23:53		 42.7762 13.225 13 2017-04-01
08:32:34		 Sala Sismica INGV-Roma 43233651
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-04-01 08:23:53 ± 0.09
Latitude 42.7762 ± 0.0027
Longitude 13.2250 ± 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 43233651

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 360
Semi-minor axis of confidence ellipse (meter) 63
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 278
Circular confidence region, given by single value of horizontal uncertainty (meter) 360.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 138
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.31746
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:1.3

Field Value
Value 1.3
Uncertainty 0.1
Num. used stations 3
Type of magnitude ML
Reference to an origin 43233651
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-04-01 08:32:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2017-04-01T08:24:05.09 0.1 undecidable manual S 119 35.2425 95 -0.04 95
IV.MOMA.HHZ. 2017-04-01T08:24:03.97 3.0 undecidable manual S -1 0
IV.T1216.EHZ. 2017-04-01T08:24:01.17 0.1 undecidable manual S 307 21.0678 103 -0.19 95
IV.T1220.HNZ. 2017-04-01T08:24:01.63 3.0 negative manual P 0.47 0
IV.TERO.HHZ. 2017-04-01T08:24:00.05 0.6 undecidable manual P 119 35.2425 95 -0.05 48
IV.RM33.EHZ. 2017-04-01T08:23:59.48 3.0 undecidable manual S -0.02 0
IV.T1218.EHZ. 2017-04-01T08:23:59.82 0.1 undecidable manual S 217 14.7741 116 0.03 100
IV.T1217.EHZ. 2017-04-01T08:23:58.55 0.1 undecidable manual P 253 24.9528 99 0.03 98
IV.T1245.HHZ. 2017-04-01T08:23:58.67 0.1 undecidable manual S 341 9.3795 134 0.06 100
IV.T1214.EHZ. 2017-04-01T08:23:57.53 0.1 undecidable manual S 216 2.2977 168 -0.14 100
IV.T1216.EHZ. 2017-04-01T08:23:57.98 1.0 negative manual P 307 21.0678 103 0.05 25
IV.T1218.EHZ. 2017-04-01T08:23:57.12 0.1 undecidable manual P 217 14.7741 116 0.1 98
IV.T1245.HHZ. 2017-04-01T08:23:56.60 0.3 negative manual P 341 9.3795 134 0.26 72
IV.T1214.EHZ. 2017-04-01T08:23:55.85 1.0 undecidable manual P 216 2.2977 168 0.05 25
IV.T1299.EHZ. 2017-04-01T08:23:52.78 3.0 positive manual P -3.12 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHN. ML:1.1 0.0000287 0.06 AML other m 2017-04-01T08:24:04.64
IV.MOMA.HHE. ML:1.2 0.00003295 0.16 AML other m 2017-04-01T08:24:17.79
IV.T1218.EHN. ML:1.4 0.00021550000000000003 0.22 AML other m 2017-04-01T08:24:00.11
IV.T1218.HNE. ML:1.4 0.00019250000000000002 1.28 AML other m 2017-04-01T08:24:00.02
IV.T1218.HNN. ML:1.4 0.00021100000000000003 0.22 AML other m 2017-04-01T08:24:00.11
IV.T1218.EHE. ML:1.2 0.00015 0.26 AML other m 2017-04-01T08:24:00.15
IV.T1245.HHN. ML:1.2 0.00019 0.88 AML other m 2017-04-01T08:23:59.12
IV.T1245.HHE. ML:1.1 0.00013550000000000001 0.54 AML other m 2017-04-01T08:23:59.99
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