Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 29-08-2020 and time 16:48:08 (Italy) in region 3 km N Accumoli (RI)

A magnitude ML 1.3 earthquake occured in region: 3 km N Accumoli (RI), on

  • 29-08-2020 14:48:08 (UTC)
  • 29-08-2020 16:48:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7260, 13.2460 at 12 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
Arquata del Tronto AP 7 1178 1845
Amatrice RI 11 2657 4502
Cittareale RI 14 482 4984
Acquasanta Terme AP 14 2916 7900
Norcia PG 15 4957 12857
Montegallo AP 15 523 13380
Cascia PG 19 3217 16597

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km W of Teramo (54892 inhabitants)
43 Km N of L'Aquila (69753 inhabitants)
51 Km SE of Foligno (57155 inhabitants)
52 Km E of Terni (111501 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
82 Km SE of Perugia (166134 inhabitants)
84 Km W of Pescara (121014 inhabitants)
86 Km W of Chieti (51815 inhabitants)
91 Km NE of Guidonia Montecelio (88673 inhabitants)
92 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 2020-08-29
14:48:08		 42.7258 13.2463 12 2020-08-29
16:14:56		 Sala Sismica INGV-Roma 82445781
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-29 14:48:08 ± 0.04
Latitude 42.7258 ± 0.0018
Longitude 13.2463 ± 0.0037
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 82445781

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 290
Semi-minor axis of confidence ellipse (meter) 118
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 67
Circular confidence region, given by single value of horizontal uncertainty (meter) 290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 55
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
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) 0.09533
Epicentral distance of station farthest from the epicenter (degree) 0.28239
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 19
Type of magnitude ML
Reference to an origin 82445781
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-29 16:14:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GAVE.EHZ. 2020-08-29T14:48:18.04 0.3 undecidable manual S 263 28.9488 92 -0.23 71
IV.TERO.HHZ. 2020-08-29T14:48:18.87 0.3 undecidable manual S 111 31.3464 91 -0.04 74
IV.RM33.EHZ. 2020-08-29T14:48:17.00 0.3 undecidable manual S 186 24.1536 92 -0.01 75
IV.MC2.EHZ. 2020-08-29T14:48:16.32 0.3 undecidable manual S 347 21.0678 93 0.14 74
IV.CAMP.HHZ. 2020-08-29T14:48:16.98 0.3 undecidable manual S 148 24.9528 92 -0.22 73
IV.LNSS.HHZ. 2020-08-29T14:48:16.33 0.3 undecidable manual S 231 21.6672 93 0 75
IV.MMO1.EHZ. 2020-08-29T14:48:15.99 0.3 undecidable manual S 19 20.3685 93 0.01 76
IV.TERO.HHZ. 2020-08-29T14:48:14.36 0.3 undecidable manual P 111 31.3464 91 0.02 73
IV.NRCA.HNZ. 2020-08-29T14:48:14.45 0.3 undecidable manual S 318 16.0728 98 -0.39 69
IV.GAVE.EHZ. 2020-08-29T14:48:14.01 0.1 undecidable manual P 263 28.9488 92 0.04 99
IV.MTRA.EHZ. 2020-08-29T14:48:13.76 0.3 undecidable manual S 74 12.6762 110 -0.21 73
IV.CAMP.HHZ. 2020-08-29T14:48:13.31 0.1 undecidable manual P 148 24.9528 92 -0.04 100
IV.T1299.HNZ. 2020-08-29T14:48:13.54 0.3 undecidable manual S 164 10.5783 120 0.08 76
IV.SMA1.EHZ. 2020-08-29T14:48:13.84 0.3 undecidable manual S 146 12.876 109 -0.16 74
IV.RM33.EHZ. 2020-08-29T14:48:13.27 0.1 undecidable manual P 186 24.1536 92 0.03 99
IV.MC2.EHZ. 2020-08-29T14:48:12.96 0.1 undecidable manual P 347 21.0678 93 0.2 97
IV.MMO1.EHZ. 2020-08-29T14:48:12.70 0.3 undecidable manual P 19 20.3685 93 0.06 75
IV.LNSS.HHZ. 2020-08-29T14:48:12.87 0.1 undecidable manual P 231 21.6672 93 0.03 100
IV.NRCA.HNZ. 2020-08-29T14:48:11.97 0.3 undecidable manual P 318 16.0728 98 -0.02 75
IV.MTRA.EHZ. 2020-08-29T14:48:11.60 0.6 undecidable manual P 74 12.6762 110 0.12 50
IV.T1299.HNZ. 2020-08-29T14:48:11.47 0.3 undecidable manual P 164 10.5783 120 0.28 73
IV.SMA1.EHZ. 2020-08-29T14:48:11.65 0.1 negative manual P 146 12.876 109 0.14 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:1.5 0.0003553367 0.1792 AML other m 2020-08-29T14:48:14.51
IV.MTRA.EHN. ML:1.6 0.00041628415 0.3008 AML other m 2020-08-29T14:48:13.84
IV.MTRA.HNE. ML:1.5 0.0003247061 0.1536 AML other m 2020-08-29T14:48:14.50
IV.MTRA.HNN. ML:1.6 0.00042988974999999996 0.3008 AML other m 2020-08-29T14:48:13.99
IV.SMA1.EHE. ML:0.9 0.00008143396 0.2368 AML other m 2020-08-29T14:48:16.26
IV.SMA1.EHN. ML:1.1 0.00011463935 0.2752 AML other m 2020-08-29T14:48:15.32
IV.LNSS.HNE. ML:1.3 0.00012746617999999997 0.128 AML other m 2020-08-29T14:48:18.20
IV.LNSS.HNN. ML:1.1 0.00008597342500000001 0.2048 AML other m 2020-08-29T14:48:17.32
IV.LNSS.HHE. ML:1.2 0.000103069225 0.16 AML other m 2020-08-29T14:48:17.39
IV.LNSS.HHN. ML:1.1 0.000082849005 0.1344 AML other m 2020-08-29T14:48:18.38
IV.RM33.HNE. ML:1.5 0.0001796999 0.2496 AML other m 2020-08-29T14:48:17.83
IV.RM33.HNN. ML:1.2 0.00008599920249999999 0.1472 AML other m 2020-08-29T14:48:17.82
IV.RM33.EHE. ML:1.5 0.00016786485 0.2752 AML other m 2020-08-29T14:48:17.71
IV.RM33.EHN. ML:1.2 0.00008638133000000001 0.16 AML other m 2020-08-29T14:48:17.75
IV.GAVE.HNE. ML:1.4 0.00013695825000000002 0.2496 AML other m 2020-08-29T14:48:19.66
IV.GAVE.EHE. ML:1.4 0.00012711845 0.16 AML other m 2020-08-29T14:48:19.54
IV.GAVE.EHN. ML:1.5 0.00015534775 0.16 AML other m 2020-08-29T14:48:18.69
IV.TERO.HHE. ML:1.0 0.00004080632 0.16 AML other m 2020-08-29T14:48:19.46
IV.TERO.HHN. ML:1.1 0.00005578495999999999 0.16 AML other m 2020-08-29T14:48:19.25
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