Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 12-03-2021 and time 21:59:48 (UTC) in region 3 km NW Barete (AQ)

A magnitude ML 1.6 earthquake occured in region: 3 km NW Barete (AQ), on

  • 12-03-2021 21:59:48 (UTC)
  • 12-03-2021 22:59:48 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.4740, 13.2610 at 12 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
Barete AQ 3 737 737
Cagnano Amiterno AQ 3 1369 2106
Pizzoli AQ 5 4326 6432
Montereale AQ 6 2581 9013
Capitignano AQ 6 665 9678
Borbona RI 11 617 10295
Scoppito AQ 11 3727 14022
Campotosto AQ 13 542 14564
Posta RI 15 694 15258
Antrodoco RI 16 2588 17846
Micigliano RI 17 127 17973
Amatrice RI 18 2657 20630
L'Aquila AQ 18 69753 90383
Cittareale RI 18 482 90865
Borgo Velino RI 18 972 91837
Crognaleto TE 20 1297 93134

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km NW of L'Aquila (69753 inhabitants)
42 Km SW of Teramo (54892 inhabitants)
51 Km E of Terni (111501 inhabitants)
68 Km NE of Tivoli (56533 inhabitants)
69 Km NE of Guidonia Montecelio (88673 inhabitants)
70 Km SE of Foligno (57155 inhabitants)
73 Km W of Montesilvano (53738 inhabitants)
76 Km W of Chieti (51815 inhabitants)
78 Km W of Pescara (121014 inhabitants)
91 Km NE of Roma (2864731 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
96 Km NE of Velletri (53303 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 1.6 2021-03-12
21:59:48		 42.4745 13.2612 12 2021-07-12
16:55:15		 Bollettino Sismico Italiano INGV 91484051
Reviewed
Rev100 		ML 1.6 2021-03-12
21:59:48		 42.4728 13.2572 12 2021-03-12
22:04:09		 Sala Sismica INGV-Roma 88061941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-12 21:59:48 ± 0.06
Latitude 42.4745 ± 0.0027
Longitude 13.2612 ± 0.0037
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 91484051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 324
Semi-minor axis of confidence ellipse (meter) 137
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 48
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) 101
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.04856
Epicentral distance of station farthest from the epicenter (degree) 0.61873
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 91484051
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-18 08:27:17

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 88061941
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-12 22:04:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2021-03-12T22:00:10.17 0.6 undecidable manual S 356 68.6757 91 0.42 42
IV.FDMO.HHZ. 2021-03-12T22:00:08.64 0.3 undecidable manual S 347 63.8916 91 0.15 67
IV.MF5.EHZ. 2021-03-12T22:00:07.73 0.6 undecidable manual S 16 59.1963 91 0.5 42
IV.MMO1.EHZ. 2021-03-12T22:00:04.32 0.3 undecidable manual S 6 47.4192 92 0.23 68
IV.NRCA.HHZ. 2021-03-12T22:00:02.45 0.3 undecidable manual S 343 41.625 92 -0.08 70
IV.GAVE.EHZ. 2021-03-12T22:00:01.66 0.6 undecidable manual S 309 38.5281 92 -0.05 47
IV.MTRA.EHZ. 2021-03-12T22:00:00.02 0.3 undecidable manual S 19 33.2445 93 -0.27 68
IV.FDMO.HHZ. 2021-03-12T22:00:00.19 0.3 undecidable manual P 347 63.8916 91 -0.05 68
IV.CSP1.EHZ. 2021-03-12T22:00:00.93 0.3 undecidable manual P 356 68.6757 91 -0.04 67
IV.MF5.EHZ. 2021-03-12T21:59:59.86 0.3 undecidable manual P 16 59.1963 91 0.35 64
IV.FIAM.HHZ. 2021-03-12T21:59:58.29 0.3 undecidable manual S 207 25.752 94 -0.02 72
IV.MMO1.EHZ. 2021-03-12T21:59:57.62 0.1 undecidable manual P 6 47.4192 92 -0.08 93
IV.LNSS.HHZ. 2021-03-12T21:59:57.51 0.3 undecidable manual S 308 22.9548 96 -0.07 72
IV.GIGS.HHZ. 2021-03-12T21:59:57.81 0.6 undecidable manual S 95 25.6521 95 -0.46 45
IV.T1299.HNN. 2021-03-12T21:59:56.19 0.3 undecidable manual S 6 17.7711 101 -0.02 73
IV.SMA1.EHZ. 2021-03-12T21:59:56.55 0.3 undecidable manual S 19 18.3705 100 0.2 72
IV.GAVE.EHZ. 2021-03-12T21:59:56.23 0.3 undecidable manual P 309 38.5281 92 -0.09 70
MN.AQU.HHE. 2021-03-12T21:59:56.14 0.3 undecidable manual S 139 17.7711 101 -0.07 74
IV.NRCA.HHZ. 2021-03-12T21:59:56.66 0.1 undecidable manual P 343 41.625 92 -0.14 92
IV.MTRA.EHZ. 2021-03-12T21:59:55.28 0.1 undecidable manual P 19 33.2445 93 -0.23 92
IV.CAMP.HHE. 2021-03-12T21:59:55.16 0.3 undecidable manual S 61 13.875 111 -0.04 74
IV.FIAM.HHZ. 2021-03-12T21:59:54.25 0.3 undecidable manual P 207 25.752 94 -0.11 73
IV.GIGS.HHZ. 2021-03-12T21:59:54.09 0.3 undecidable manual P 95 25.6521 95 -0.25 71
MN.AQU.HHE. 2021-03-12T21:59:53.46 0.3 undecidable manual P 139 17.7711 101 0.31 69
IV.RM33.EHZ. 2021-03-12T21:59:53.36 0.3 undecidable manual S 315 5.3946 149 -0.11 74
IV.T1299.HNN. 2021-03-12T21:59:53.19 0.3 undecidable manual P 6 17.7711 101 0.04 74
IV.SMA1.EHZ. 2021-03-12T21:59:53.41 0.1 positive manual P 19 18.3705 100 0.18 96
IV.LNSS.HHZ. 2021-03-12T21:59:53.94 0.1 negative manual P 308 22.9548 96 0 98
IV.CAMP.HHE. 2021-03-12T21:59:52.59 0.3 undecidable manual P 61 13.875 111 0.03 74
IV.RM33.EHZ. 2021-03-12T21:59:51.64 0.1 negative manual P 315 5.3946 149 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.HNE. ML:1.6 0.0006462099 0.1024 AML other m 2021-03-12T21:59:54.00
IV.RM33.EHE. ML:1.7 0.00064986495 0.128 AML other m 2021-03-12T21:59:54.02
IV.RM33.HNN. ML:1.4 0.00037771165000000003 0.128 AML other m 2021-03-12T21:59:53.68
IV.RM33.EHN. ML:1.4 0.000379504 0.1152 AML other m 2021-03-12T21:59:53.70
IV.FIAM.HHE. ML:0.7 0.000025522455 0.2816 AML other m 2021-03-12T21:59:58.37
IV.LNSS.HHN. ML:1.6 0.00022479565000000002 0.192 AML other m 2021-03-12T21:59:58.32
IV.FIAM.HHN. ML:0.8 0.000034250000000000006 0.18 AML other m 2021-03-12T21:59:58.75
IV.LNSS.HHE. ML:1.5 0.00019157560000000002 0.1792 AML other m 2021-03-12T21:59:59.26
IV.MTRA.EHN. ML:1.8 0.00024258685 0.2048 AML other m 2021-03-12T22:00:00.17
IV.MTRA.EHE. ML:1.7 0.00021948065 0.2432 AML other m 2021-03-12T22:00:00.40
IV.NRCA.HHN. ML:1.8 0.0002 0.12 AML other m 2021-03-12T22:00:03.33
IV.GAVE.EHE. ML:1.2 0.00005904167 0.2176 AML other m 2021-03-12T22:00:05.88
IV.NRCA.HHE. ML:2.0 0.000364 0.16 AML other m 2021-03-12T22:00:03.50
IV.GAVE.EHN. ML:1.3 0.0000697 1.18 AML other m 2021-03-12T22:00:04.70
IV.LNSS.HNE. ML:1.5 0.00019291819999999997 0.1664 AML other m 2021-03-12T21:59:59.34
IV.LNSS.HNN. ML:1.6 0.0002212611 0.192 AML other m 2021-03-12T21:59:58.23
IV.FIAM.HNE. ML:2.4 0.0013242535000000002 0.9984 AML other m 2021-03-12T21:59:58.76
IV.MTRA.HNN. ML:1.8 0.00024502584999999997 0.192 AML other m 2021-03-12T22:00:00.15
IV.MTRA.HNE. ML:1.7 0.0002143388 0.2432 AML other m 2021-03-12T22:00:00.40
IV.NRCA.HNE. ML:2.0 0.0003510993 0.128 AML other m 2021-03-12T22:00:02.82
IV.FDMO.HHE. ML:1.3 0.00003801835 0.1408 AML other m 2021-03-12T22:00:10.68
IV.FDMO.HHN. ML:1.4 0.00004430068 0.1792 AML other m 2021-03-12T22:00:11.30
IV.CSP1.EHE. ML:1.8 0.0000933377715 0.256 AML other m 2021-03-12T22:00:13.08
IV.CSP1.EHN. ML:1.8 0.000107332865 0.2432 AML other m 2021-03-12T22:00:13.04
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