INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 2.1 on date 11-01-2018 and time 21:30:34 (Italy) in region 2 km W L'Aquila (AQ)

A magnitude ML 2.1 earthquake occured in region: 2 km W L'Aquila (AQ), on

  • 11-01-2018 20:30:34 (UTC)
  • 11-01-2018 21:30:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.36, 13.38 at 19 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
L'Aquila AQ 2 69753 69753
Lucoli AQ 8 1011 70764
Tornimparte AQ 10 3187 73951
Scoppito AQ 10 3727 77678
Pizzoli AQ 11 4326 82004
Ocre AQ 11 1167 83171
Fossa AQ 11 721 83892
Barete AQ 13 737 84629
Poggio Picenze AQ 14 1136 85765
Sant'Eusanio Forconese AQ 14 394 86159
Rocca di Cambio AQ 16 533 86692
Villa Sant'Angelo AQ 16 424 87116
San Demetrio ne' Vestini AQ 17 1854 88970
Cagnano Amiterno AQ 17 1369 90339
Barisciano AQ 18 1828 92167
Capitignano AQ 19 665 92832
Fagnano Alto AQ 20 418 93250

Municipalities with at least 50000 inhabitants

An earthquake occurred to
2 Km W of L'Aquila (69753 inhabitants)
43 Km SW of Teramo (54892 inhabitants)
64 Km E of Terni (111501 inhabitants)
65 Km NE of Tivoli (56533 inhabitants)
65 Km W of Chieti (51815 inhabitants)
66 Km W of Montesilvano (53738 inhabitants)
67 Km NE of Guidonia Montecelio (88673 inhabitants)
70 Km W of Pescara (121014 inhabitants)
87 Km SE of Foligno (57155 inhabitants)
90 Km NE of Velletri (53303 inhabitants)
90 Km NE of Roma (2864731 inhabitants)
Recent and historical Seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the last three days (72 hours)

Earthquakes of the last three days (72 hours)

This map reports the earthquake epicenters located in the past 72 hours (3 days) from the time this page has been generated. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the last 90 days

Earthquakes of the last 90 days

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1985

Earthquakes since 1985

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Significant earthquakes since 1000 AD until 2006

Significant earthquakes since 1000 AD until 2006

This map shows the epicenters of the historical earthquakes catalogue CPT11 (Catalogo Parametrico dei Terremoti Italiani, 2011 version) with estimated magnitude ≥ 5.0 since 1000 AD until 2006. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
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 2.1 2018-01-11
20:30:34
42.36 13.38 19 2018-01-11
20:42:26
Sala Sismica INGV-Roma 53146951
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-01-11 20:30:34 ± 0.11
Latitude 42.36 ± 0.00
Longitude 13.38 ± 0.01
Depth (km) 19 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 53146951

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 620
Semi-minor axis of confidence ellipse (meter) 240
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 54
Circular confidence region, given by single value of horizontal uncertainty (meter) 620
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 138
Number of associated phases, regardless of their use for origin computation 48
Number of defining phases 40
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.99285
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 25
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 52
Type of magnitude ML
Reference to an origin 53146951
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-01-11 20:42:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2018-01-11T20:31:01.40 3.0 undecidable manual S 350 0.7455 97 1.99 0
IV.CESI.HHZ. 2018-01-11T20:31:01.70 3.0 undecidable manual S 332 0.7347 97 2.59 0
IV.GUMA.HHZ. 2018-01-11T20:31:00.00 3.0 undecidable manual S 357 0.706 97 1.75 0
IV.T1221.EHZ. 2018-01-11T20:30:58.22 3.0 undecidable manual S 322 0.6376 98 1.98 0
IV.MF5.EHZ. 2018-01-11T20:30:57.30 3.0 undecidable manual S 5 0.6331 98 1.19 0
IV.LPEL.HHZ. 2018-01-11T20:30:57.67 0.3 undecidable manual S 117 0.6709 98 0.44 62
IV.MMO1.EHZ. 2018-01-11T20:30:53.58 0.6 undecidable manual S 356 0.5432 100 0.09 46
IV.EL6.EHZ. 2018-01-11T20:30:53.75 0.6 negative manual P 348 0.9929 95 0.56 38
IV.INTR.HHZ. 2018-01-11T20:30:53.16 0.6 undecidable manual S 131 0.5207 100 0.34 44
IV.NRCA.HHZ. 2018-01-11T20:30:52.92 0.6 undecidable manual S 338 0.5144 101 0.28 45
IV.FDMO.HHZ. 2018-01-11T20:30:51.82 3.0 undecidable manual S 343 0.7123 97 -6.61 0
IV.CESI.HHZ. 2018-01-11T20:30:49.04 1.0 undecidable manual P 332 0.7347 97 0.22 22
IV.GUMA.HHZ. 2018-01-11T20:30:48.61 0.6 negative manual P 357 0.706 97 0.29 43
IV.MTRA.EHZ. 2018-01-11T20:30:48.94 0.6 undecidable manual S 2 0.3993 105 -0.38 44
IV.CSP1.EHZ. 2018-01-11T20:30:48.67 0.1 undecidable manual P 350 0.7455 97 -0.31 84
IV.FDMO.HHZ. 2018-01-11T20:30:48.00 1.0 negative manual P 343 0.7123 97 -0.42 21
IV.VCEL.EHZ. 2018-01-11T20:30:48.30 0.6 undecidable manual S 84 0.3426 108 0.59 42
IV.T1221.EHZ. 2018-01-11T20:30:47.56 1.0 positive manual P 322 0.6376 98 0.41 21
IV.T0110.HHZ. 2018-01-11T20:30:47.21 0.6 undecidable manual S 113 0.3202 109 0.14 47
IV.LPEL.HHZ. 2018-01-11T20:30:47.98 1.0 negative manual P 117 0.6709 98 0.25 22
IV.PTQR.HHZ. 2018-01-11T20:30:47.13 0.6 undecidable manual S 177 0.3354 108 -0.37 46
IV.OFFI.HHZ. 2018-01-11T20:30:47.50 0.6 undecidable manual P 21 0.6196 98 0.64 39
IV.SMA1.EHZ. 2018-01-11T20:30:46.10 0.6 undecidable manual S 353 0.2752 113 0.28 47
IV.TERO.HHZ. 2018-01-11T20:30:46.50 0.6 undecidable manual S 32 0.313 110 -0.37 46
IV.T1299.EHZ. 2018-01-11T20:30:46.40 0.6 undecidable manual S 346 0.286 112 0.28 47
IV.MF5.EHZ. 2018-01-11T20:30:46.95 1.0 undecidable manual P 5 0.6331 98 -0.13 22
IV.ARRO.EHZ. 2018-01-11T20:30:46.36 3.0 undecidable manual P 1.55 0
IV.INTR.HHZ. 2018-01-11T20:30:45.24 0.3 negative manual P 131 0.5207 100 0.06 70
IV.MMO1.EHZ. 2018-01-11T20:30:45.28 0.1 undecidable manual P 356 0.5432 100 -0.28 88
IV.RM33.EHZ. 2018-01-11T20:30:44.33 0.6 undecidable manual S 321 0.1943 124 0.62 44
IV.NRCA.HHZ. 2018-01-11T20:30:44.83 0.1 undecidable manual P 338 0.5144 101 -0.25 89
IV.CERT.HHZ. 2018-01-11T20:30:44.80 3.0 positive manual P 0.09 0
IV.CAMP.HHZ. 2018-01-11T20:30:43.59 0.6 undecidable manual S 7 0.1799 126 0.23 48
IV.T1214.EHZ. 2018-01-11T20:30:43.47 0.1 undecidable manual P 343 0.4209 104 -0.05 95
IV.GIGS.HHZ. 2018-01-11T20:30:42.96 0.6 undecidable manual S 56 0.1718 128 -0.22 48
IV.VCEL.EHZ. 2018-01-11T20:30:42.22 0.3 negative manual P 84 0.3426 108 -0.01 73
IV.FAGN.HHZ. 2018-01-11T20:30:42.97 0.6 undecidable manual S 121 0.1772 127 -0.32 48
IV.MTRA.EHZ. 2018-01-11T20:30:42.65 0.6 positive manual P 2 0.3993 105 -0.51 43
IV.LNSS.HHZ. 2018-01-11T20:30:42.77 0.1 undecidable manual P 315 0.3498 107 0.43 90
IV.PTQR.HHZ. 2018-01-11T20:30:41.80 0.6 positive manual P 177 0.3354 108 -0.31 46
IV.SMA1.EHZ. 2018-01-11T20:30:41.02 0.3 positive manual P 353 0.2752 113 -0.12 72
IV.TERO.HHZ. 2018-01-11T20:30:41.48 0.1 positive manual P 32 0.313 110 -0.26 93
IV.T1299.EHZ. 2018-01-11T20:30:41.32 0.1 positive manual P 346 0.286 112 0.01 99
IV.T0110.HHZ. 2018-01-11T20:30:41.64 0.6 positive manual P 113 0.3202 109 -0.22 47
IV.CAMP.HHZ. 2018-01-11T20:30:39.74 0.6 positive manual P 7 0.1799 126 0.02 50
IV.RM33.EHZ. 2018-01-11T20:30:39.91 0.1 undecidable manual P 321 0.1943 124 -0.01 100
IV.GIGS.HHZ. 2018-01-11T20:30:39.46 0.1 positive manual P 56 0.1718 128 -0.15 98
IV.FAGN.HHZ. 2018-01-11T20:30:39.51 0.1 negative manual P 121 0.1772 127 -0.17 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GIGS.HHE. ML:2 0.000599 0.22 AML other m 2018-01-11T20:30:43.20
IV.GIGS.HHN. ML:1.9 0.0004585 0.22 AML other m 2018-01-11T20:30:43.61
IV.CAMP.HHN. ML:2.2 0.001015 0.64 AML other m 2018-01-11T20:30:44.13
IV.FAGN.HHN. ML:2.6 0.00243 0.5 AML other m 2018-01-11T20:30:44.73
IV.CAMP.HHE. ML:2.1 0.0007775 1.46 AML other m 2018-01-11T20:30:44.01
IV.RM33.EHN. ML:2.4 0.001215 1.46 AML other m 2018-01-11T20:30:44.89
IV.RM33.EHE. ML:2.3 0.001095 1.2 AML other m 2018-01-11T20:30:45.76
IV.FAGN.HHE. ML:2.6 0.002395 1.74 AML other m 2018-01-11T20:30:45.95
IV.T1299.EHE. ML:2 0.000404 0.32 AML other m 2018-01-11T20:30:47.82
IV.PTQR.HHN. ML:1.6 0.000126 0.26 AML other m 2018-01-11T20:30:47.77
IV.TERO.HHN. ML:2 0.000406 0.44 AML other m 2018-01-11T20:30:48.69
IV.PTQR.HHE. ML:1.7 0.000168 0.86 AML other m 2018-01-11T20:30:48.44
IV.TERO.HHE. ML:2 0.000381 0.44 AML other m 2018-01-11T20:30:49.24
IV.T1299.HNN. ML:1.9 0.0003445 0.32 AML other m 2018-01-11T20:30:49.78
IV.T1299.EHN. ML:2 0.0003505 0.32 AML other m 2018-01-11T20:30:49.78
IV.SMA1.EHN. ML:2.2 0.000701 1.58 AML other m 2018-01-11T20:30:49.17
IV.T0110.HHN. ML:2.3 0.0006825 1.36 AML other m 2018-01-11T20:30:50.26
IV.T0110.HHE. ML:2.2 0.0006115 0.5 AML other m 2018-01-11T20:30:50.51
IV.T1299.HNE. ML:2 0.000354 0.4 AML other m 2018-01-11T20:30:50.77
IV.SMA1.EHE. ML:2.2 0.000612 0.36 AML other m 2018-01-11T20:30:50.80
IV.MTRA.EHE. ML:2.1 0.000336 0.98 AML other m 2018-01-11T20:30:51.71
IV.LNSS.HHE. ML:2.1 0.000438 0.44 AML other m 2018-01-11T20:30:51.97
IV.VCEL.EHN. ML:2.5 0.0009905 0.34 AML other m 2018-01-11T20:30:51.80
IV.VCEL.EHE. ML:2.6 0.00139 0.8 AML other m 2018-01-11T20:30:52.18
IV.MTRA.HNE. ML:2.1 0.000342 0.32 AML other m 2018-01-11T20:30:52.67
IV.LNSS.HHN. ML:2 0.000322 0.7 AML other m 2018-01-11T20:30:52.41
IV.MTRA.HNN. ML:2.1 0.0003665 1.7 AML other m 2018-01-11T20:30:53.86
IV.MTRA.EHN. ML:2.1 0.000333 1.42 AML other m 2018-01-11T20:30:53.86
IV.T1214.HNE. ML:1.8 0.000176 0.92 AML other m 2018-01-11T20:30:54.81
IV.NRCA.HHN. ML:2.1 0.0002595 0.16 AML other m 2018-01-11T20:30:54.66
IV.INTR.HHE. ML:1.8 0.0001153 0.22 AML other m 2018-01-11T20:30:55.65
IV.NRCA.HHE. ML:2.2 0.0003095 0.42 AML other m 2018-01-11T20:30:56.50
IV.T1214.HNN. ML:1.9 0.0002025 0.34 AML other m 2018-01-11T20:30:56.93
IV.CERT.HHN. ML:1.8 0.000151 0.64 AML other m 2018-01-11T20:30:56.84
IV.CERT.HHE. ML:2 0.0002255 0.3 AML other m 2018-01-11T20:30:57.76
IV.INTR.HHN. ML:2.1 0.000252 1.34 AML other m 2018-01-11T20:30:59.77
IV.LPEL.HHN. ML:2.1 0.000169 0.24 AML other m 2018-01-11T20:31:00.18
IV.LPEL.HHE. ML:2.1 0.0001745 0.3 AML other m 2018-01-11T20:31:00.37
IV.MF5.EHN. ML:1.9 0.0001417 1.58 AML other m 2018-01-11T20:31:00.18
IV.OFFI.HHN. ML:2.4 0.000373 0.48 AML other m 2018-01-11T20:31:01.33
IV.MF5.EHE. ML:1.9 0.0001335 0.48 AML other m 2018-01-11T20:31:01.68
IV.FDMO.HHN. ML:1.9 0.0001115 0.96 AML other m 2018-01-11T20:31:02.42
IV.CESI.HHN. ML:2.1 0.000164 1.02 AML other m 2018-01-11T20:31:02.33
IV.OFFI.HHE. ML:2.3 0.000319 0.42 AML other m 2018-01-11T20:31:02.65
IV.CSP1.EHE. ML:1.7 6.24E-5 1.58 AML other m 2018-01-11T20:31:03.81
IV.GUMA.HHE. ML:2.4 0.000356 0.44 AML other m 2018-01-11T20:31:04.59
IV.CESI.HHE. ML:1.8 9.065E-5 1.52 AML other m 2018-01-11T20:31:05.11
IV.GUMA.HHN. ML:2.3 0.000255 0.42 AML other m 2018-01-11T20:31:06.23
IV.FDMO.HHE. ML:2 0.000127 0.24 AML other m 2018-01-11T20:31:06.63
IV.CSP1.EHN. ML:1.4 3.505E-5 0.48 AML other m 2018-01-11T20:31:08.15
IV.EL6.EHE. ML:2.1 9.39E-5 0.7 AML other m 2018-01-11T20:31:17.19
IV.EL6.EHN. ML:2.3 0.0001685 0.66 AML other m 2018-01-11T20:31:17.26
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Focal Mechanisms

Focal Mechanisms

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://cnt.rm.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol scales with the calculated moment magnitude, Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in full SEED format Download