INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.6 on date 19-09-2018 and time 23:17:20 (Italy) in region 3 km E Rocca Pia (AQ)

A magnitude ML 1.6 earthquake occured in region: 3 km E Rocca Pia (AQ), on

  • 19-09-2018 21:17:20 (UTC)
  • 19-09-2018 23:17:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.93, 14.01 at 15 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
Rocca Pia AQ 3 178 178
Pettorano sul Gizio AQ 6 1376 1554
Pescocostanzo AQ 7 1128 2682
Rivisondoli AQ 8 700 3382
Cansano AQ 8 274 3656
Campo di Giove AQ 10 803 4459
Scanno AQ 11 1847 6306
Roccaraso AQ 11 1627 7933
Palena CH 12 1392 9325
Introdacqua AQ 13 2126 11451
Pacentro AQ 13 1174 12625
Villalago AQ 14 568 13193
Lettopalena CH 15 358 13551
Sulmona AQ 15 24557 38108
Bugnara AQ 16 1125 39233
Taranta Peligna CH 17 376 39609
Gamberale CH 17 320 39929
Ateleta AQ 18 1181 41110
Colledimacine CH 18 202 41312
Castel di Sangro AQ 18 6538 47850
Anversa degli Abruzzi AQ 18 341 48191
Villetta Barrea AQ 18 653 48844
Pizzoferrato CH 19 1130 49974
Barrea AQ 19 726 50700
Civitella Alfedena AQ 19 296 50996
Lama dei Peligni CH 19 1271 52267

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 Km S of Chieti (51815 inhabitants)
62 Km S of Pescara (121014 inhabitants)
66 Km S of Montesilvano (53738 inhabitants)
69 Km SE of L'Aquila (69753 inhabitants)
85 Km SE of Teramo (54892 inhabitants)
99 Km N of Caserta (76326 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 1.6 2018-09-19
21:17:20
41.93 14.01 15 2018-09-19
21:28:52
Sala Sismica INGV-Roma 61122321
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-09-19 21:17:20 ± 0.07
Latitude 41.93 ± 0.00
Longitude 14.01 ± 0.00
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 61122321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 460
Semi-minor axis of confidence ellipse (meter) 40
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 122
Circular confidence region, given by single value of horizontal uncertainty (meter) 460
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 114
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 18
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
Epicentral distance of station farthest from the epicenter (degree) 0.75273
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.4
Num. used stations 16
Type of magnitude ML
Reference to an origin 61122321
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-09-19 21:28:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.IVPL.HHZ. 2018-09-19T21:18:58.28 3.0 undecidable manual Sn -2.78 0
IV.CAVE.HHZ. 2018-09-19T21:18:39.98 3.0 undecidable manual Sn -0.45 0
IV.CAPR.HNZ. 2018-09-19T21:18:31.16 3.0 undecidable manual Pg 13.72 0
IV.VARE.HHZ. 2018-09-19T21:18:29.62 3.0 undecidable manual Pn 1.95 0
MN.BLY.HHZ. 2018-09-19T21:18:03.21 3.0 positive manual Pn -1.07 0
IV.MURB.HHZ. 2018-09-19T21:18:00.84 3.0 undecidable manual Sg 6.94 0
IV.CAVE.HHZ. 2018-09-19T21:18:00.03 3.0 positive manual Pn -2.62 0
IV.APEC.HHZ. 2018-09-19T21:18:00.43 3.0 undecidable manual Sn 0.25 0
IV.VIVA.HHZ. 2018-09-19T21:17:48.30 3.0 undecidable manual Sg 1.26 0
IV.PE3.EHZ. 2018-09-19T21:17:40.66 3.0 undecidable manual Pn -0.3 0
IV.CERT.HHZ. 2018-09-19T21:17:37.84 3.0 undecidable manual P 0
IV.TERO.HHZ. 2018-09-19T21:17:35.05 0.6 undecidable manual P 337 0.7527 93 -0.25 43
IV.T0110.HHZ. 2018-09-19T21:17:34.19 0.6 undecidable manual S 330 0.3444 99 0.47 44
IV.GIUL.HHE. 2018-09-19T21:17:33.62 1.0 undecidable manual P 237 0.6754 93 -0.36 21
IV.VVLD.HHZ. 2018-09-19T21:17:32.19 0.3 undecidable manual S 258 0.2941 101 -0.06 73
IV.RNI2.HHZ. 2018-09-19T21:17:32.24 3.0 undecidable manual S 0
IV.POFI.HHZ. 2018-09-19T21:17:32.72 0.3 undecidable manual S 226 0.3085 100 0.05 72
IV.GIGS.HHZ. 2018-09-19T21:17:32.67 1.0 undecidable manual P 328 0.6133 94 -0.24 22
IV.VAGA.HNN. 2018-09-19T21:17:31.85 0.6 undecidable manual P 162 0.5423 95 0.14 45
IV.VCEL.EHZ. 2018-09-19T21:17:30.63 0.6 undecidable manual P 345 0.4793 95 0.01 47
IV.MCI.EHE. 2018-09-19T21:17:30.93 0.6 undecidable manual P 198 0.4641 96 0.56 42
IV.LRP.EHZ. 2018-09-19T21:17:29.68 0.3 undecidable manual P 228 0.4245 96 -0.02 72
IV.CERA.HHZ. 2018-09-19T21:17:28.02 0.3 undecidable manual P 179 0.3336 99 -0.14 72
IV.T0110.HHZ. 2018-09-19T21:17:28.24 0.3 undecidable manual P 330 0.3444 99 -0.09 72
IV.LPEL.HHZ. 2018-09-19T21:17:28.96 0.3 undecidable manual S 48 0.1727 114 0.16 73
IV.VVLD.HHZ. 2018-09-19T21:17:27.41 0.3 undecidable manual P 258 0.2941 101 -0.08 73
IV.INTR.HHZ. 2018-09-19T21:17:27.28 0.3 undecidable manual S 316 0.1115 131 0.01 76
IV.POFI.HHZ. 2018-09-19T21:17:27.60 0.3 undecidable manual P 226 0.3085 100 -0.13 72
IV.LPEL.HHZ. 2018-09-19T21:17:25.26 0.1 undecidable manual P 48 0.1727 114 -0.24 96
IV.RNI2.HHZ. 2018-09-19T21:17:25.79 3.0 undecidable manual P 0
IV.INTR.HHZ. 2018-09-19T21:17:24.69 0.1 undecidable manual P 316 0.1115 131 0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.INTR.HNE. ML:2.2 0.00159 0.24 AML other m 2018-09-19T21:17:27.42
IV.INTR.HHE. ML:2.1 0.001135 0.24 AML other m 2018-09-19T21:17:27.42
IV.INTR.HHN. ML:2.3 0.0017 0.24 AML other m 2018-09-19T21:17:27.52
IV.INTR.HNN. ML:2.2 0.00157 0.24 AML other m 2018-09-19T21:17:27.53
IV.LPEL.HHN. ML:2 0.0006015 0.5 AML other m 2018-09-19T21:17:29.59
IV.LPEL.HHE. ML:2 0.000665 1.14 AML other m 2018-09-19T21:17:29.18
IV.VVLD.HHE. ML:1.3 7.775E-5 0.4 AML other m 2018-09-19T21:17:32.48
IV.VVLD.HHN. ML:1.3 8.235E-5 0.48 AML other m 2018-09-19T21:17:32.81
IV.POFI.HHE. ML:1.2 7.11E-5 0.66 AML other m 2018-09-19T21:17:34.33
IV.POFI.HHN. ML:1.2 6.31E-5 1.5 AML other m 2018-09-19T21:17:34.84
IV.T0110.HHN. ML:1.8 0.0001965 1.02 AML other m 2018-09-19T21:17:35.98
IV.CERA.HHE. ML:1.4 9.71E-5 0.92 AML other m 2018-09-19T21:17:36.99
IV.LRP.EHE. ML:1.3 5.26E-5 1.04 AML other m 2018-09-19T21:17:36.56
IV.T0110.HHE. ML:1.7 0.0001825 0.5 AML other m 2018-09-19T21:17:37.11
IV.CERA.HHN. ML:1.4 9.525E-5 1.58 AML other m 2018-09-19T21:17:38.00
IV.LRP.EHN. ML:1.3 5.325E-5 0.26 AML other m 2018-09-19T21:17:39.02
MN.BLY.HHE. ML:3 5.395E-5 0.18 AML other m 2018-09-19T21:18:04.79
MN.BLY.HHN. ML:2.9 4.52E-5 0.36 AML other m 2018-09-19T21:18:04.72
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