Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 08-12-2019 and time 16:31:42 (Italy) in region 4 km N Accumoli (RI)

A magnitude ML 1.2 earthquake occured in region: 4 km N Accumoli (RI), on

  • 08-12-2019 15:31:42 (UTC)
  • 08-12-2019 16:31:42 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7320, 13.2570 at 14 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 4 667 667
Arquata del Tronto AP 6 1178 1845
Amatrice RI 12 2657 4502
Acquasanta Terme AP 13 2916 7418
Montegallo AP 14 523 7941
Cittareale RI 15 482 8423
Norcia PG 15 4957 13380
Montemonaco AP 20 604 13984
Valle Castellana TE 20 977 14961
Cascia PG 20 3217 18178
Castelsantangelo sul Nera MC 20 281 18459

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km W of Teramo (54892 inhabitants)
44 Km N of L'Aquila (69753 inhabitants)
52 Km E of Foligno (57155 inhabitants)
53 Km E of Terni (111501 inhabitants)
77 Km W of Montesilvano (53738 inhabitants)
82 Km SE of Perugia (166134 inhabitants)
84 Km W of Pescara (121014 inhabitants)
86 Km NW of Chieti (51815 inhabitants)
92 Km NE of Guidonia Montecelio (88673 inhabitants)
93 Km NE of Tivoli (56533 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
Bulletin
Rev1000 		ML 1.2 2019-12-08
15:31:42		 42.7323 13.2573 14 2020-02-28
16:42:25		 Bollettino Sismico Italiano INGV 76601381
Reviewed
Rev100 		ML 1.3 2019-12-08
15:31:42		 42.7318 13.2562 13 2019-12-08
15:54:08		 Sala Sismica INGV-Roma 74438971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-08 15:31:42 ± 0.06
Latitude 42.7323 ± 0.0018
Longitude 13.2573 ± 0.0037
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 76601381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 318
Semi-minor axis of confidence ellipse (meter) 57
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) 320.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 83
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.36243
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 74438971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-08 15:54:08

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 76601381
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-02-17 15:12:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.RRL.HHZ. 2019-12-08T15:33:50.49 3.0 undecidable manual Sg 20.450001 0
IV.TDS.HHZ. 2019-12-08T15:33:45.25 3.0 undecidable manual Sg 24.610001 0
IV.ZONE.HHZ. 2019-12-08T15:33:06.49 3.0 undecidable manual Sg 14.44 0
ST.PANI.EHZ. 2019-12-08T15:32:59.32 3.0 undecidable manual Sg 12.89 0
IV.MTGR.HHZ. 2019-12-08T15:32:55.17 3.0 undecidable manual Pg 11.3 0
IV.GALF.HHZ. 2019-12-08T15:32:51.89 3.0 negative manual Pn 4.08 0
IV.TDS.HHZ. 2019-12-08T15:32:50.01 3.0 undecidable manual Pg 20.139999 0
IV.PCN.EHZ. 2019-12-08T15:32:40.43 3.0 undecidable manual Sn -5.23 0
CR.STON.BHZ. 2019-12-08T15:32:37.88 3.0 undecidable manual Pg 21.5 0
IV.ZCCA.HHZ. 2019-12-08T15:32:19.79 3.0 undecidable manual Sn 0.28 0
IT.FIE.HGZ. 2019-12-08T15:32:09.84 3.0 undecidable manual Sg 0.17 0
IV.BRSN.EHZ. 2019-12-08T15:32:05.21 3.0 undecidable manual Sn -0.51 0
IV.CSP1.EHZ. 2019-12-08T15:31:56.01 0.3 undecidable manual S 354 40.1265 95 0.22 69
IV.GIGS.HHZ. 2019-12-08T15:31:55.88 0.6 undecidable manual S 140 40.2264 95 0.04 48
IV.FDMO.HHZ. 2019-12-08T15:31:54.85 0.3 undecidable manual S 338 36.4413 96 0.02 72
IV.TERO.HHZ. 2019-12-08T15:31:53.31 0.3 undecidable manual S 113 30.747 98 -0.01 74
IV.LNSS.HHZ. 2019-12-08T15:31:51.33 0.3 undecidable manual S 231 22.755 104 0.1 74
IV.RM33.EHZ. 2019-12-08T15:31:51.75 0.3 undecidable manual S 188 25.0527 102 -0.06 74
IV.CAMP.HHZ. 2019-12-08T15:31:51.71 0.6 undecidable manual S 150 25.0527 102 -0.11 49
IV.CSP1.EHZ. 2019-12-08T15:31:50.06 1.0 undecidable manual P 354 40.1265 95 -0.16 24
IV.MMO1.EHZ. 2019-12-08T15:31:50.24 0.6 undecidable manual S 17 19.3695 108 -0.11 49
IV.GIGS.HHZ. 2019-12-08T15:31:50.13 0.1 undecidable manual P 140 40.2264 95 -0.12 95
IV.MC2.EHZ. 2019-12-08T15:31:50.92 0.6 undecidable manual S 344 20.6682 106 0.25 48
IV.FDMO.HHZ. 2019-12-08T15:31:49.44 0.3 undecidable manual P 338 36.4413 96 -0.22 70
IV.NRCA.HHZ. 2019-12-08T15:31:49.18 0.3 undecidable manual S 314 16.1727 115 -0.38 70
IV.SMA1.EHZ. 2019-12-08T15:31:48.61 0.3 undecidable manual S 151 12.9759 124 -0.2 73
IV.T1299.HNZ. 2019-12-08T15:31:48.64 0.6 undecidable manual S 169 11.0778 130 0.24 49
IV.RM33.EHZ. 2019-12-08T15:31:48.00 0.1 undecidable manual P 188 25.0527 102 0.08 98
IV.MTRA.EHZ. 2019-12-08T15:31:48.50 0.3 undecidable manual S 77 11.6772 128 -0.02 76
IV.TERO.HHZ. 2019-12-08T15:31:48.67 0.3 undecidable manual P 113 30.747 98 -0.12 72
IV.MC2.EHZ. 2019-12-08T15:31:47.32 0.3 undecidable manual P 344 20.6682 106 0.06 74
IV.CAMP.HHZ. 2019-12-08T15:31:47.89 0.1 undecidable manual P 150 25.0527 102 -0.03 99
IV.LNSS.HHZ. 2019-12-08T15:31:47.55 0.3 undecidable manual P 231 22.755 104 -0.03 74
IV.MMO1.EHZ. 2019-12-08T15:31:47.12 0.1 undecidable manual P 17 19.3695 108 0.05 99
IV.MTRA.EHZ. 2019-12-08T15:31:46.11 0.1 undecidable manual P 77 11.6772 128 0.09 100
IV.SMA1.EHZ. 2019-12-08T15:31:46.23 0.3 undecidable manual P 151 12.9759 124 0.05 76
IV.NRCA.HHZ. 2019-12-08T15:31:46.50 0.1 undecidable manual P 314 16.1727 115 -0.12 99
IV.T1299.HNZ. 2019-12-08T15:31:46.31 0.3 undecidable manual P 169 11.0778 130 0.36 71
IV.CPGN.EHZ. 2019-12-08T15:31:41.61 3.0 undecidable manual P -1.27 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:1.2 0.000147356 0.1536 AML other m 2019-12-08T15:31:48.63
IV.MTRA.HNE. ML:1.2 0.00014345295 0.1408 AML other m 2019-12-08T15:31:48.63
IV.MTRA.HNN. ML:1.2 0.000160595955 0.1408 AML other m 2019-12-08T15:31:48.66
IV.MTRA.EHN. ML:1.3 0.00017528485 0.1408 AML other m 2019-12-08T15:31:48.66
IV.SMA1.EHN. ML:1.2 0.00015499414999999998 1.7568 AML other m 2019-12-08T15:31:49.95
IV.SMA1.EHE. ML:1.3 0.00016751705 0.1152 AML other m 2019-12-08T15:31:49.14
IV.NRCA.HNN. ML:1.6 0.00029071040000000004 0.0896 AML other m 2019-12-08T15:31:49.29
IV.NRCA.HHN. ML:1.6 0.00031077335 0.1024 AML other m 2019-12-08T15:31:49.34
IV.NRCA.HHE. ML:1.6 0.0003541671 0.064 AML other m 2019-12-08T15:31:49.29
IV.NRCA.HNE. ML:1.6 0.00034540795 0.0768 AML other m 2019-12-08T15:31:49.32
IV.RM33.HNE. ML:1.3 0.0001185563 1.1424 AML other m 2019-12-08T15:31:51.91
IV.LNSS.HHN. ML:1.2 0.00009613811 0.2304 AML other m 2019-12-08T15:31:51.51
IV.LNSS.HHE. ML:1.2 0.00008692030000000001 0.0896 AML other m 2019-12-08T15:31:51.70
IV.RM33.EHN. ML:1.1 0.00006346599999999999 0.2816 AML other m 2019-12-08T15:31:52.01
IV.RM33.EHE. ML:1.1 0.000066034475 0.1408 AML other m 2019-12-08T15:31:52.42
IV.TERO.HHE. ML:1.0 0.000041333524999999995 0.1408 AML other m 2019-12-08T15:31:54.43
IV.FDMO.HHE. ML:0.9 0.000028915820000000003 1.8592 AML other m 2019-12-08T15:31:55.96
IV.FDMO.HHN. ML:1.1 0.000047511855000000005 1.8464 AML other m 2019-12-08T15:31:55.03
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