ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of ML 1.8 on date 25-03-2019 and time 13:09:29 (Italy) in region 4 km W Cerchio (AQ)

A magnitude ML 1.8 earthquake occured in region: 4 km W Cerchio (AQ), on

  • 25-03-2019 12:09:29 (UTC)
  • 25-03-2019 13:09:29 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.05, 13.56 at 10 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Cerchio AQ 4 1635 1635
Aielli AQ 4 1475 3110
Celano AQ 4 11017 14127
Collarmele AQ 5 894 15021
San Benedetto dei Marsi AQ 7 3909 18930
Pescina AQ 8 4133 23063
Ovindoli AQ 10 1227 24290
Trasacco AQ 10 6246 30536
Avezzano AQ 12 42515 73051
Luco dei Marsi AQ 12 6079 79130
Ortucchio AQ 13 1860 80990
Gagliano Aterno AQ 14 254 81244
Ortona dei Marsi AQ 15 542 81786
Secinaro AQ 15 359 82145
Gioia dei Marsi AQ 15 1989 84134
Massa d'Albe AQ 16 1476 85610
Castel di Ieri AQ 16 303 85913
Castelvecchio Subequo AQ 17 982 86895
Lecce nei Marsi AQ 17 1702 88597
Capistrello AQ 17 5252 93849
Magliano de' Marsi AQ 17 3690 97539
Canistro AQ 17 995 98534
Cocullo AQ 18 230 98764
Goriano Sicoli AQ 18 569 99333
Rocca di Mezzo AQ 18 1526 100859
Molina Aterno AQ 18 386 101245
Collelongo AQ 18 1233 102478
Tione degli Abruzzi AQ 18 310 102788
Scurcola Marsicana AQ 18 2824 105612
Civitella Roveto AQ 19 3268 108880
Acciano AQ 19 327 109207
Civita d'Antino AQ 20 979 110186

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km SE of L'Aquila (69753 inhabitants)
60 Km SW of Chieti (51815 inhabitants)
64 Km E of Tivoli (56533 inhabitants)
69 Km S of Teramo (54892 inhabitants)
69 Km E of Guidonia Montecelio (88673 inhabitants)
71 Km SW of Montesilvano (53738 inhabitants)
71 Km SW of Pescara (121014 inhabitants)
77 Km NE of Velletri (53303 inhabitants)
85 Km NE of Latina (125985 inhabitants)
91 Km E of Roma (2864731 inhabitants)
91 Km NE of Aprilia (73446 inhabitants)
94 Km SE of Terni (111501 inhabitants)
98 Km E of Pomezia (62966 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.8 2019-03-25
12:09:29
42.05 13.56 10 2019-03-25
12:19:07
Sala Sismica INGV-Roma 66904481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-03-25 12:09:29 ± 0.04
Latitude 42.05 ± 0.00
Longitude 13.56 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 66904481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 309
Semi-minor axis of confidence ellipse (meter) 288
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 352
Circular confidence region, given by single value of horizontal uncertainty (meter) 310
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.57287
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 66904481
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-03-25 12:19:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MCRV.HHZ. 2019-03-25T12:10:21.84 3.0 undecidable manual Sn 0.1 0
IV.RIBO.EHZ.01 2019-03-25T12:10:04.50 3.0 undecidable manual Pn 1.43 0
IV.MTMR.EHZ. 2019-03-25T12:09:55.32 3.0 undecidable manual P -0.81 0
IV.GIUL.HHZ. 2019-03-25T12:09:40.07 3.0 negative manual P -0.16 0
IV.TERO.HHZ. 2019-03-25T12:09:40.63 1.0 positive manual P 3 0.5729 50 0.16 22
IV.RM33.EHE. 2019-03-25T12:09:39.37 0.6 undecidable manual P 331 0.5261 50 -0.3 44
IV.INTR.HHZ. 2019-03-25T12:09:39.17 0.3 undecidable manual S 99 0.2554 50 -0.22 71
IV.CERT.HHZ. 2019-03-25T12:09:38.20 0.1 undecidable manual P 257 0.4443 50 -0.06 94
IV.FAGN.HHZ. 2019-03-25T12:09:37.96 0.6 undecidable manual S 4 0.2158 112 -0.12 49
IV.GIGS.HHZ. 2019-03-25T12:09:37.73 0.1 undecidable manual P 1 0.4029 50 0.17 93
IV.FIAM.HHZ. 2019-03-25T12:09:37.31 0.3 undecidable manual P 303 0.3966 50 -0.14 70
IV.VVLD.HHZ. 2019-03-25T12:09:36.81 0.6 undecidable manual S 166 0.1853 116 -0.2 48
IV.GUAR.HHZ. 2019-03-25T12:09:36.05 0.1 undecidable manual P 216 0.3166 50 -0.03 97
IT.OPI.HGZ. 2019-03-25T12:09:36.70 0.1 undecidable manual P 144 0.3372 50 0.26 92
IV.INTR.HHZ. 2019-03-25T12:09:35.03 0.1 undecidable manual P 99 0.2554 50 -0.01 99
IT.SULP.HGZ. 2019-03-25T12:09:35.39 0.1 undecidable manual P 82 0.2716 50 0.08 97
IV.FAGN.HHZ. 2019-03-25T12:09:34.29 0.1 undecidable manual P 4 0.2158 112 0.01 100
IV.PTQR.HHZ. 2019-03-25T12:09:34.90 0.3 undecidable manual S 257 0.125 125 -0.08 75
IV.VVLD.HHZ. 2019-03-25T12:09:33.64 0.1 undecidable manual P 166 0.1853 116 -0.02 100
IV.PTQR.HHZ. 2019-03-25T12:09:32.69 0.1 undecidable manual P 257 0.125 125 0.2 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PTQR.HHN. ML:1.8 0.0006225 0.62 AML other m 2019-03-25T12:09:35.93
IV.PTQR.HHE. ML:1.7 0.0005455 1.34 AML other m 2019-03-25T12:09:36.15
IV.VVLD.HHE. ML:1.8 0.000503 0.42 AML other m 2019-03-25T12:09:37.29
IV.VVLD.HHN. ML:1.8 0.000487 0.38 AML other m 2019-03-25T12:09:37.38
IV.FAGN.HHN. ML:2 0.000624 0.24 AML other m 2019-03-25T12:09:39.33
IV.INTR.HHE. ML:1.6 0.000183 1.12 AML other m 2019-03-25T12:09:40.81
IV.INTR.HHN. ML:1.9 0.00038 1.24 AML other m 2019-03-25T12:09:40.87
IV.FAGN.HHE. ML:2.1 0.000881 0.28 AML other m 2019-03-25T12:09:41.52
IV.GUAR.HHN. ML:2.1 0.000498 1.7 AML other m 2019-03-25T12:09:42.96
IV.GUAR.HHE. ML:1.7 0.000198 0.98 AML other m 2019-03-25T12:09:42.62
IV.GIGS.HHN. ML:1 2.95E-5 1.06 AML other m 2019-03-25T12:09:46.67
IV.GIGS.HHE. ML:1 2.825E-5 0.68 AML other m 2019-03-25T12:09:47.30
IV.GIUL.HHN. ML:1.6 9.205E-5 0.18 AML other m 2019-03-25T12:09:49.20
IV.GIUL.HHE. ML:1.7 0.0001096 0.22 AML other m 2019-03-25T12:09:49.15
IV.FIAM.HHN. ML:1.1 3.765E-5 0.46 AML other m 2019-03-25T12:09:49.58
IV.TERO.HHE. ML:1.3 3.96E-5 0.28 AML other m 2019-03-25T12:09:49.99
IV.FIAM.HHE. ML:0.9 2.42E-5 1.42 AML other m 2019-03-25T12:09:50.76
IV.TERO.HHN. ML:1.3 3.99E-5 1.58 AML other m 2019-03-25T12:09:51.06
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download