Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 08-12-2019 and time 11:09:35 (Italy) in region 3 km W Accumoli (RI)

A magnitude ML 0.9 earthquake occured in region: 3 km W Accumoli (RI), on

  • 08-12-2019 10:09:35 (UTC)
  • 08-12-2019 11:09:35 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6850, 13.2130 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
Accumoli RI 3 667 667
Cittareale RI 9 482 1149
Amatrice RI 9 2657 3806
Arquata del Tronto AP 12 1178 4984
Norcia PG 16 4957 9941
Cascia PG 17 3217 13158
Montereale AQ 18 2581 15739
Acquasanta Terme AP 19 2916 18655
Campotosto AQ 19 542 19197
Capitignano AQ 20 665 19862

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km NW of L'Aquila (69753 inhabitants)
40 Km W of Teramo (54892 inhabitants)
48 Km E of Terni (111501 inhabitants)
51 Km SE of Foligno (57155 inhabitants)
79 Km W of Montesilvano (53738 inhabitants)
82 Km SE of Perugia (166134 inhabitants)
86 Km W of Pescara (121014 inhabitants)
86 Km NE of Guidonia Montecelio (88673 inhabitants)
87 Km W of Chieti (51815 inhabitants)
87 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 0.9 2019-12-08
10:09:35		 42.685 13.2132 11 2019-12-08
10:19:31		 Sala Sismica INGV-Roma 74435911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-08 10:09:35 ± 0.07
Latitude 42.6850 ± 0.0045
Longitude 13.2132 ± 0.0061
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 74435911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 464
Semi-minor axis of confidence ellipse (meter) 461
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 156
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) 62
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 23
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) 0.46675
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 12
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 74435911
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-08 10:19:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
SI.KOSI.HHZ. 2019-12-08T10:11:13.08 3.0 undecidable manual Sn -5.1 0
IV.ZONE.HHZ. 2019-12-08T10:10:59.23 3.0 undecidable manual Sn -7.43 0
IV.CAGR.HHZ. 2019-12-08T10:10:45.60 3.0 undecidable manual Pg 19.02 0
IV.SPS2.HHZ. 2019-12-08T10:10:37.85 3.0 positive manual Pg 18 0
IV.EUCT.HNZ. 2019-12-08T10:10:35.08 3.0 undecidable manual Pg 18.450001 0
IV.VCRE.HHZ. 2019-12-08T10:10:20.45 3.0 undecidable manual Sn 2.03 0
IV.NARO.HHZ. 2019-12-08T10:10:16.50 3.0 undecidable manual Sg 5.57 0
IV.FIR.HHZ. 2019-12-08T10:10:13.21 3.0 undecidable manual Sn -2.6 0
IV.SFI.EHZ. 2019-12-08T10:09:56.41 3.0 undecidable manual Pg 5.32 0
IV.TERO.HHZ. 2019-12-08T10:09:46.01 0.6 undecidable manual S 102 32.6451 50 -0.36 46
IV.CESX.HHE. 2019-12-08T10:09:45.20 0.1 undecidable manual P 261 51.8037 50 0.61 82
IV.MC2.EHZ. 2019-12-08T10:09:45.05 0.6 undecidable manual S 356 25.1526 50 0.67 42
IV.CAMP.HHZ. 2019-12-08T10:09:44.31 0.6 undecidable manual S 136 23.0547 50 0.5 45
IV.MMO1.HNE. 2019-12-08T10:09:44.29 0.6 undecidable manual S 21 25.5522 50 -0.18 48
IV.GAVE.EHZ. 2019-12-08T10:09:44.31 0.6 undecidable manual S 272 26.0517 50 -0.3 47
IV.NRCA.HHZ. 2019-12-08T10:09:42.30 0.6 undecidable manual S 334 18.3705 50 -0.26 48
IV.RM33.EHZ. 2019-12-08T10:09:42.60 0.6 undecidable manual S 180 19.5693 50 -0.27 48
IV.MC2.EHZ. 2019-12-08T10:09:41.02 0.6 undecidable manual P 356 25.1526 50 0.53 44
IV.LNSS.HHE. 2019-12-08T10:09:41.86 0.6 undecidable manual S 237 16.7721 123 -0.27 48
IV.TERO.HHZ. 2019-12-08T10:09:41.60 0.3 negative manual P 102 32.6451 50 -0.04 73
IV.MTRA.HNE. 2019-12-08T10:09:41.98 0.6 undecidable manual S 62 16.9719 123 -0.19 49
IV.SMA1.EHZ. 2019-12-08T10:09:40.77 0.3 undecidable manual S 121 11.6772 133 0.05 76
IV.GAVE.EHZ. 2019-12-08T10:09:40.49 0.1 undecidable manual P 272 26.0517 50 -0.13 97
IV.MMO1.HNE. 2019-12-08T10:09:40.23 0.1 undecidable manual P 21 25.5522 50 -0.31 94
IV.RM33.EHZ. 2019-12-08T10:09:39.60 0.6 undecidable manual P 180 19.5693 50 -0.02 50
IV.MTRA.HNE. 2019-12-08T10:09:39.11 0.1 undecidable manual P 62 16.9719 123 -0.1 99
IV.CAMP.HHZ. 2019-12-08T10:09:39.97 0.6 undecidable manual P 136 23.0547 50 -0.19 48
IV.T1299.HNE. 2019-12-08T10:09:39.98 0.6 undecidable manual S 135 7.9809 144 0.11 50
IV.LNSS.HHE. 2019-12-08T10:09:39.04 0.1 undecidable manual P 237 16.7721 123 -0.15 98
IV.NRCA.HHZ. 2019-12-08T10:09:39.49 0.1 positive manual P 334 18.3705 50 0.05 100
IV.SMA1.EHZ. 2019-12-08T10:09:38.63 1.0 undecidable manual P 121 11.6772 133 0.25 24
IV.T1299.HNE. 2019-12-08T10:09:38.10 0.1 undecidable manual P 135 7.9809 144 0.22 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:0.9 0.00009329999999999999 0.32 AML other m 2019-12-08T10:09:41.29
IV.SMA1.EHE. ML:0.8 0.0000629 0.86 AML other m 2019-12-08T10:09:42.45
IV.NRCA.HHE. ML:1.2 0.00013550000000000001 0.16 AML other m 2019-12-08T10:09:42.52
IV.NRCA.HHN. ML:0.9 0.0000653 0.42 AML other m 2019-12-08T10:09:42.62
IV.RM33.EHN. ML:0.9 0.0000586 0.24 AML other m 2019-12-08T10:09:42.79
IV.RM33.EHE. ML:0.8 0.000046899999999999995 0.3 AML other m 2019-12-08T10:09:42.76
IV.GAVE.EHE. ML:1.0 0.00005705 0.66 AML other m 2019-12-08T10:09:44.83
IV.GAVE.EHN. ML:1.0 0.00005795 0.14 AML other m 2019-12-08T10:09:44.76
IV.TERO.HHN. ML:0.7 0.00001825 0.7 AML other m 2019-12-08T10:09:46.54
IV.TERO.HHE. ML:0.8 0.0000249 0.5 AML other m 2019-12-08T10:09:47.68
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