Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.6 on date 31-08-2017 and time 18:40:57 (Italy) in region 2 km E Castelsantangelo sul Nera (MC)

A magnitude ML 0.6 earthquake occured in region: 2 km E Castelsantangelo sul Nera (MC), on

  • 31-08-2017 16:40:57 (UTC)
  • 31-08-2017 18:40:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8950, 13.1780 at 8 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
Castelsantangelo sul Nera MC 2 281 281
Ussita MC 6 444 725
Visso MC 8 1107 1832
Preci PG 11 724 2556
Bolognola MC 12 142 2698
Montemonaco AP 12 604 3302
Norcia PG 13 4957 8259
Montegallo AP 14 523 8782
Montefortino FM 14 1178 9960
Acquacanina MC 15 121 10081
Fiastra MC 16 559 10640
Arquata del Tronto AP 17 1178 11818
Amandola FM 17 3629 15447
Fiordimonte MC 17 202 15649
Monte Cavallo MC 18 145 15794
Sarnano MC 19 3264 19058
Pieve Torina MC 20 1458 20516

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
50 Km NW of Teramo (54892 inhabitants)
57 Km NE of Terni (111501 inhabitants)
63 Km N of L'Aquila (69753 inhabitants)
68 Km E of Perugia (166134 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
97 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 0.6 2017-08-31
16:40:57		 42.8952 13.1782 8 2017-08-31
16:56:07		 Sala Sismica INGV-Roma 49548341
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-08-31 16:40:57 ± 0.21
Latitude 42.8952 ± 0.0045
Longitude 13.1782 ± 0.0086
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 49548341

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 711
Semi-minor axis of confidence ellipse (meter) 191
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 253
Circular confidence region, given by single value of horizontal uncertainty (meter) 710.0
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 13
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.27160
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 49548341
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-08-31 16:56:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.APEC.HNZ. 2017-08-31T16:41:27.70 3.0 undecidable manual S -0.13 0
IV.T1299.EHZ. 2017-08-31T16:41:08.55 0.3 undecidable manual S 164 30.1476 104 0.33 71
IV.CESI.HHZ. 2017-08-31T16:41:06.97 0.3 undecidable manual S 299 25.3524 107 0.36 71
IV.CSP1.EHZ. 2017-08-31T16:41:05.62 0.1 undecidable manual S 6 21.9669 110 0.13 100
IV.FDMO.HHZ. 2017-08-31T16:41:04.13 0.3 undecidable manual S 335 17.3715 114 0.12 76
IV.T1299.EHZ. 2017-08-31T16:41:03.52 1.0 negative manual P 164 30.1476 104 -0.13 25
IV.CSP1.EHZ. 2017-08-31T16:41:02.06 1.0 positive manual P 6 21.9669 110 -0.02 26
IV.T1216.EHZ. 2017-08-31T16:41:02.51 0.3 undecidable manual S 268 12.9759 121 -0.14 76
IV.CESI.HHZ. 2017-08-31T16:41:02.55 0.6 undecidable manual P 299 25.3524 107 -0.17 49
IV.FDMO.HHZ. 2017-08-31T16:41:01.01 0.3 undecidable manual P 335 17.3715 114 -0.21 74
IV.MC2.EHZ. 2017-08-31T16:41:00.43 0.3 undecidable manual S 26 1.998 165 0.22 76
IV.T1216.EHZ. 2017-08-31T16:41:00.27 1.0 undecidable manual P 268 12.9759 121 -0.17 25
IV.MC2.EHZ. 2017-08-31T16:40:58.55 0.1 undecidable manual P 26 1.998 165 -0.48 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T1216.EHE. ML:1.2 0.00020355035 0.256 AML other m 2017-08-31T16:41:03.02
IV.T1216.EHN. ML:1.0 0.00010447525 0.272 AML other m 2017-08-31T16:41:03.16
IV.FDMO.HHE. ML:0.6 0.00003409541500000001 0.26 AML other m 2017-08-31T16:41:04.73
IV.FDMO.HHN. ML:0.4 0.000027137540000000002 0.12 AML other m 2017-08-31T16:41:05.07
IV.CSP1.EHE. ML:0.4 0.000018662724 0.14 AML other m 2017-08-31T16:41:06.55
IV.CSP1.EHN. ML:0.2 0.000008536794 0.26 AML other m 2017-08-31T16:41:05.76
IV.CESI.HHN. ML:0.7 0.00003245986 0.32 AML other m 2017-08-31T16:41:06.81
IV.CESI.HHE. ML:0.4 0.000014050595 0.14 AML other m 2017-08-31T16:41:07.55
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