Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 28-03-2020 and time 18:59:17 (UTC) in region 4 km W San Benedetto dei Marsi (AQ)

A magnitude ML 0.8 earthquake occured in region: 4 km W San Benedetto dei Marsi (AQ), on

  • 28-03-2020 18:59:17 (UTC)
  • 28-03-2020 19:59:17 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.0030, 13.5760 at 6 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
San Benedetto dei Marsi AQ 4 3909 3909
Trasacco AQ 6 6246 10155
Cerchio AQ 7 1635 11790
Pescina AQ 8 4133 15923
Ortucchio AQ 8 1860 17783
Collarmele AQ 8 894 18677
Aielli AQ 9 1475 20152
Celano AQ 10 11017 31169
Luco dei Marsi AQ 10 6079 37248
Gioia dei Marsi AQ 11 1989 39237
Lecce nei Marsi AQ 12 1702 40939
Avezzano AQ 13 42515 83454
Ortona dei Marsi AQ 13 542 83996
Collelongo AQ 13 1233 85229
Canistro AQ 15 995 86224
Ovindoli AQ 15 1227 87451
Civita d'Antino AQ 15 979 88430
Civitella Roveto AQ 16 3268 91698
Villavallelonga AQ 16 919 92617
Capistrello AQ 16 5252 97869
Cocullo AQ 17 230 98099
Gagliano Aterno AQ 17 254 98353
Bisegna AQ 18 223 98576
Morino AQ 18 1448 100024
Castel di Ieri AQ 19 303 100327
Goriano Sicoli AQ 19 569 100896
Secinaro AQ 19 359 101255
Anversa degli Abruzzi AQ 19 341 101596
San Vincenzo Valle Roveto AQ 19 2347 103943
Massa d'Albe AQ 19 1476 105419
Castelvecchio Subequo AQ 19 982 106401
Castellafiume AQ 20 1106 107507

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km SE of L'Aquila (69753 inhabitants)
62 Km SW of Chieti (51815 inhabitants)
64 Km E of Tivoli (56533 inhabitants)
70 Km E of Guidonia Montecelio (88673 inhabitants)
74 Km SW of Pescara (121014 inhabitants)
74 Km S of Teramo (54892 inhabitants)
74 Km SW of Montesilvano (53738 inhabitants)
75 Km E of Velletri (53303 inhabitants)
81 Km NE of Latina (125985 inhabitants)
89 Km NE of Aprilia (73446 inhabitants)
91 Km E of Roma (2864731 inhabitants)
96 Km E of Pomezia (62966 inhabitants)
99 Km SE of Terni (111501 inhabitants)
100 Km NE of Anzio (54211 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 0.8 2020-03-28
18:59:17		 42.0027 13.5758 6 2020-03-28
19:46:35		 Sala Sismica INGV-Roma 77653291
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-28 18:59:17 ± 0.08
Latitude 42.0027 ± 0.0027
Longitude 13.5758 ± 0.0048
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77653291

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 317
Semi-minor axis of confidence ellipse (meter) 232
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 100
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) 132
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.13130
Epicentral distance of station farthest from the epicenter (degree) 0.43797
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 77653291
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-28 19:46:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.T0110.HHZ. 2020-03-28T18:59:28.28 0.6 undecidable manual S 33 30.0477 102 0.11 48
IV.VCEL.EHZ. 2020-03-28T18:59:27.09 0.6 undecidable manual P 27 48.618 50 0.05 47
IV.FAGN.HHZ. 2020-03-28T18:59:23.23 0.3 undecidable manual P 1 29.1486 102 -0.26 70
IV.PTQR.HHZ. 2020-03-28T18:59:23.05 0.3 undecidable manual S 278 14.5743 113 0.04 75
IV.VVLD.HHZ. 2020-03-28T18:59:23.21 0.3 undecidable manual S 165 15.2736 112 -0.02 75
IV.T0110.HHZ. 2020-03-28T18:59:23.71 0.1 undecidable manual P 33 30.0477 102 0.05 97
IV.VVLD.HHZ. 2020-03-28T18:59:20.80 0.1 undecidable manual P 165 15.2736 112 -0.01 100
IV.PTQR.HHZ. 2020-03-28T18:59:20.72 0.1 undecidable manual P 278 14.5743 113 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PTQR.HHE. ML:0.7 0.000058100405000000004 0.1792 AML other m 2020-03-28T18:59:25.22
IV.PTQR.HHN. ML:0.6 0.000047791520000000006 0.2048 AML other m 2020-03-28T18:59:25.38
IV.VVLD.HHE. ML:0.7 0.00005730814 0.2176 AML other m 2020-03-28T18:59:23.51
IV.VVLD.HHN. ML:0.9 0.00008064097 0.3456 AML other m 2020-03-28T18:59:23.69
IV.T0110.HHE. ML:0.8 0.00003527873 0.2048 AML other m 2020-03-28T18:59:29.54
IV.T0110.HHN. ML:0.7 0.000026298195 0.1664 AML other m 2020-03-28T18:59:29.68
IV.FAGN.HHE. ML:1.2 0.000077627925 0.3072 AML other m 2020-03-28T18:59:29.59
IV.FAGN.HHN. ML:1.0 0.00005246211000000001 0.2944 AML other m 2020-03-28T18:59:30.64
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