INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.8 on date 11-09-2018 and time 19:43:49 (Italy) in region 2 km E Rocca Pia (AQ)

A magnitude ML 1.8 earthquake occured in region: 2 km E Rocca Pia (AQ), on

  • 11-09-2018 17:43:49 (UTC)
  • 11-09-2018 19:43:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.94, 14 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 2 178 178
Pettorano sul Gizio AQ 5 1376 1554
Pescocostanzo AQ 7 1128 2682
Cansano AQ 8 274 2956
Campo di Giove AQ 9 803 3759
Rivisondoli AQ 9 700 4459
Scanno AQ 11 1847 6306
Introdacqua AQ 12 2126 8432
Roccaraso AQ 12 1627 10059
Palena CH 13 1392 11451
Pacentro AQ 13 1174 12625
Villalago AQ 14 568 13193
Sulmona AQ 14 24557 37750
Lettopalena CH 15 358 38108
Bugnara AQ 15 1125 39233
Taranta Peligna CH 17 376 39609
Gamberale CH 17 320 39929
Anversa degli Abruzzi AQ 18 341 40270
Colledimacine CH 18 202 40472
Ateleta AQ 19 1181 41653
Villetta Barrea AQ 19 653 42306
Castel di Sangro AQ 19 6538 48844
Prezza AQ 19 945 49789
Lama dei Peligni CH 20 1271 51060
Pizzoferrato CH 20 1130 52190
Civitella Alfedena AQ 20 296 52486
Barrea AQ 20 726 53212

Municipalities with at least 50000 inhabitants

An earthquake occurred to
48 Km S of Chieti (51815 inhabitants)
61 Km S of Pescara (121014 inhabitants)
65 Km S of Montesilvano (53738 inhabitants)
68 Km SE of L'Aquila (69753 inhabitants)
84 Km S of Teramo (54892 inhabitants)
100 Km E of Tivoli (56533 inhabitants)
100 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 1.8 2018-09-11
17:43:49
41.94 14 15 2018-09-11
17:48:44
Sala Sismica INGV-Roma 60831471
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-09-11 17:43:49 ± 0.14
Latitude 41.94 ± 0.01
Longitude 14.00 ± 0.01
Depth (km) 15 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 60831471

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 670
Semi-minor axis of confidence ellipse (meter) 366
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 80
Circular confidence region, given by single value of horizontal uncertainty (meter) 670
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 103
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.10342
Epicentral distance of station farthest from the epicenter (degree) 0.42448
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 60831471
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-09-11 17:48:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.T0110.HHZ. 2018-09-11T17:44:02.11 0.3 undecidable manual S 330 0.3363 98 0.4 67
IV.CERA.HHZ. 2018-09-11T17:44:02.11 0.3 undecidable manual S 178 0.3399 98 0.3 69
IV.RNI2.HHZ. 2018-09-11T17:44:00.12 0.6 undecidable manual S 154 0.2599 102 0.65 42
IV.VVLD.HHZ. 2018-09-11T17:44:00.54 0.3 undecidable manual S 257 0.2896 100 0.2 71
IV.POFI.HHZ. 2018-09-11T17:44:00.81 0.3 undecidable manual S 225 0.3085 100 -0.07 73
IV.LRP.EHZ. 2018-09-11T17:43:57.63 0.1 undecidable manual P 227 0.4245 96 -0.29 91
IV.CERA.HHZ. 2018-09-11T17:43:56.25 0.1 positive manual P 178 0.3399 98 -0.23 93
IV.T0110.HHZ. 2018-09-11T17:43:56.51 0.3 positive manual P 330 0.3363 98 0.09 72
IV.POFI.HHZ. 2018-09-11T17:43:55.73 0.1 undecidable manual P 225 0.3085 100 -0.22 94
IV.INTR.HNZ. 2018-09-11T17:43:55.30 0.3 undecidable manual S 316 0.1034 133 0.02 76
IV.RNI2.HHZ. 2018-09-11T17:43:55.24 0.3 positive manual P 154 0.2599 102 0.1 73
IV.VVLD.HHZ. 2018-09-11T17:43:55.53 0.1 undecidable manual P 257 0.2896 100 -0.11 97
IV.LPEL.HHZ. 2018-09-11T17:43:53.40 0.1 undecidable manual P 51 0.1736 113 -0.33 94
IV.INTR.HNZ. 2018-09-11T17:43:52.83 0.1 undecidable manual P 316 0.1034 133 0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.INTR.HNE. ML:2.4 0.00206 0.24 AML other m 2018-09-11T17:43:55.55
IV.INTR.HHE. ML:2.2 0.001475 0.24 AML other m 2018-09-11T17:43:55.67
IV.INTR.HHN. ML:2.4 0.002395 1.04 AML other m 2018-09-11T17:43:55.65
IV.INTR.HNN. ML:2.4 0.00209 1.04 AML other m 2018-09-11T17:43:55.66
IV.LPEL.HHN. ML:2 0.000707 0.2 AML other m 2018-09-11T17:43:57.75
IV.LPEL.HHE. ML:1.9 0.0005835 1.5 AML other m 2018-09-11T17:43:57.92
IV.VVLD.HHN. ML:1.6 0.0001675 0.32 AML other m 2018-09-11T17:44:00.72
IV.VVLD.HHE. ML:1.5 0.0001239 1.32 AML other m 2018-09-11T17:44:01.88
IV.POFI.HHE. ML:1.5 0.0001182 0.98 AML other m 2018-09-11T17:44:02.50
IV.CERA.HHE. ML:1.8 0.0002055 1.12 AML other m 2018-09-11T17:44:02.73
IV.POFI.HHN. ML:1.5 0.000131 1.6 AML other m 2018-09-11T17:44:03.82
IV.CERA.HHN. ML:1.9 0.000304 1.74 AML other m 2018-09-11T17:44:03.90
IV.T0110.HHN. ML:1.9 0.0002825 0.26 AML other m 2018-09-11T17:44:03.94
IV.LRP.EHN. ML:1.4 7.355E-5 1.32 AML other m 2018-09-11T17:44:05.67
IV.RNI2.HHN. ML:1.7 0.0002275 0.78 AML other m 2018-09-11T17:44:05.85
IV.RNI2.HNN. ML:1.6 0.000205 0.8 AML other m 2018-09-11T17:44:05.86
IV.T0110.HHE. ML:1.9 0.000299 0.82 AML other m 2018-09-11T17:44:06.10
IV.LRP.EHE. ML:1.3 6.135E-5 1.3 AML other m 2018-09-11T17:44:06.30
IV.RNI2.HHE. ML:1.8 0.000271 1.24 AML other m 2018-09-11T17:44:07.65
IV.RNI2.HNE. ML:1.7 0.000251 1.22 AML other m 2018-09-11T17:44:07.65
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