Earthquake with magnitude of ML 1.1 on date 22-01-2017 and time 16:57:01 (Italy) in region 6 km E Cittareale (RI)

A magnitude ML 1.1 earthquake occured in region: 6 km E Cittareale (RI), on

  • 22-01-2017 15:57:01 (UTC)
  • 22-01-2017 16:57:01 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6, 13.23 at 8 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
Cittareale RI 6 482 482
Amatrice RI 6 2657 3139
Montereale AQ 9 2581 5720
Accumoli RI 11 667 6387
Capitignano AQ 11 665 7052
Borbona RI 13 617 7669
Campotosto AQ 13 542 8211
Posta RI 14 694 8905
Cagnano Amiterno AQ 16 1369 10274
Barete AQ 17 737 11011
Pizzoli AQ 19 4326 15337
Arquata del Tronto AP 20 1178 16515

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NW of L'Aquila (69753 inhabitants)
40 Km W of Teramo (54892 inhabitants)
48 Km E of Terni (111501 inhabitants)
58 Km SE of Foligno (57155 inhabitants)
76 Km W of Montesilvano (53738 inhabitants)
78 Km NE of Guidonia Montecelio (88673 inhabitants)
79 Km NE of Tivoli (56533 inhabitants)
82 Km W of Chieti (51815 inhabitants)
82 Km W of Pescara (121014 inhabitants)
89 Km SE of Perugia (166134 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
100 Km NE of Roma (2864731 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 1.1 2017-01-22
15:57:01
42.6 13.23 8 2017-01-22
16:03:34
Sala Sismica INGV-Roma 39587681
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-01-22 15:57:01 ± 0.11
Latitude 42.60 ± 0.00
Longitude 13.23 ± 0.01
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 39587681

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 567
Semi-minor axis of confidence ellipse (meter) 315
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 90
Circular confidence region, given by single value of horizontal uncertainty (meter) 570
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 134
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.33005
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 3
Type of magnitude ML
Reference to an origin 39587681
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-01-22 16:03:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
AC.VLO.HHZ. 2017-01-22T15:58:22.66 3.0 negative manual Pg 17.879999 0
GU.RNCA.HHZ. 2017-01-22T15:57:47.42 3.0 undecidable manual Pn -7.5 0
IV.SPS2.HHZ. 2017-01-22T15:57:45.17 3.0 positive manual Pn -5.8 0
TV.SF04.EHZ. 2017-01-22T15:57:42.54 3.0 undecidable manual Sg -0.07 0
MN.CUC.HHZ. 2017-01-22T15:57:41.97 3.0 undecidable manual Pn 2.12 0
IV.PIGN.HHZ. 2017-01-22T15:57:34.58 3.0 undecidable manual Sn -1.44 0
IV.IMOL.HNZ. 2017-01-22T15:57:34.10 3.0 positive manual Pg 1.85 0
GU.GSCL.HHZ. 2017-01-22T15:57:33.95 3.0 undecidable manual Pn -6.44 0
IV.SENI.EHZ. 2017-01-22T15:57:32.80 3.0 undecidable manual Sg -1.78 0
IV.MA9.HHZ. 2017-01-22T15:57:31.96 3.0 undecidable manual Sg 1.4 0
IV.PE3.EHZ. 2017-01-22T15:57:30.88 3.0 undecidable manual Sn -9.84 0
IV.ARVD.HHZ. 2017-01-22T15:57:23.33 3.0 undecidable manual Sn -8.88 0
IV.T1216.EHZ. 2017-01-22T15:57:09.06 0.1 undecidable manual P 332 0.3265 50 0.14 94
IV.T1215.EHZ. 2017-01-22T15:57:08.29 1.0 negative manual P 307 0.3301 50 -0.7 20
IV.TERO.HHZ. 2017-01-22T15:57:06.90 3.0 undecidable manual Pg 7.31 0
IV.T1218.EHZ. 2017-01-22T15:57:06.51 0.1 undecidable manual S 310 0.1061 125 -0.06 100
IV.T1217.EHZ. 2017-01-22T15:57:06.83 1.0 undecidable manual P 297 0.2437 107 -0.4 23
IV.RM33.EHZ. 2017-01-22T15:57:06.24 0.1 undecidable manual S 186 0.0935 129 0.07 100
IV.T1202.EHZ. 2017-01-22T15:57:06.61 0.1 undecidable manual S 359 0.1016 126 0.2 97
IV.RM33.EHZ. 2017-01-22T15:57:04.29 0.3 positive manual P 186 0.0935 129 0.07 75
IV.T1202.EHZ. 2017-01-22T15:57:04.46 0.3 negative manual P 359 0.1016 126 0.1 74
IV.T1299.EHZ. 2017-01-22T15:57:04.91 0.1 undecidable manual S 52 0.0522 145 -0.15 99
IV.T1218.EHZ. 2017-01-22T15:57:04.46 0.6 negative manual P 310 0.1061 125 0.01 50
IV.T1299.EHZ. 2017-01-22T15:57:03.48 0.1 undecidable manual P 52 0.0522 145 -0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHN. ML:0.7 6.9379555E-5 0.1024 AML other m 2017-01-22T15:57:06.70
TV.SF04.EHN. ML:2.8 0.0003705 0.06 AML other m 2017-01-22T15:57:48.67
TV.SF04.EHE. ML:2.4 0.000184 0.52 AML other m 2017-01-22T15:57:43.58
IV.SPS2.HHE. ML:2.9 2.88E-5 0.74 AML other m 2017-01-22T15:57:57.66
IV.SPS2.HHN. ML:2.9 3.07E-5 0.48 AML other m 2017-01-22T15:57:58.59
IV.T1202.EHN. ML:1.3 0.00026881695 1.0624 AML other m 2017-01-22T15:57:07.50
IV.T1299.EHN. ML:1 0.0001945 0.14 AML other m 2017-01-22T15:57:05.03
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