Earthquake with magnitude of ML 1.2 on date 23-01-2017 and time 17:20:47 (Italy) in region 4 km NW Campotosto (AQ)

A magnitude ML 1.2 earthquake occured in region: 4 km NW Campotosto (AQ), on

  • 23-01-2017 16:20:47 (UTC)
  • 23-01-2017 17:20:47 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.58, 13.32 at 11 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
Campotosto AQ 4 542 542
Capitignano AQ 7 665 1207
Amatrice RI 7 2657 3864
Montereale AQ 9 2581 6445
Crognaleto TE 13 1297 7742
Cittareale RI 14 482 8224
Barete AQ 14 737 8961
Accumoli RI 15 667 9628
Cagnano Amiterno AQ 15 1369 10997
Cortino TE 16 656 11653
Pizzoli AQ 16 4326 15979
Borbona RI 17 617 16596
Fano Adriano TE 18 296 16892
Posta RI 20 694 17586
Pietracamela TE 20 271 17857

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km N of L'Aquila (69753 inhabitants)
32 Km W of Teramo (54892 inhabitants)
56 Km E of Terni (111501 inhabitants)
66 Km SE of Foligno (57155 inhabitants)
68 Km W of Montesilvano (53738 inhabitants)
74 Km W of Chieti (51815 inhabitants)
74 Km W of Pescara (121014 inhabitants)
81 Km NE of Tivoli (56533 inhabitants)
81 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km SE of Perugia (166134 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 1.2 2017-01-23
16:20:47
42.58 13.33 11 2017-01-23
16:27:15
Sala Sismica INGV-Roma 39654251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-01-23 16:20:47 ± 0.04
Latitude 42.58 ± 0.00
Longitude 13.33 ± 0.00
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 39654251

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 430
Semi-minor axis of confidence ellipse (meter) 290
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) 430
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 107
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.09
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.2698
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0
Num. used stations 2
Type of magnitude ML
Reference to an origin 39654251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-01-23 16:27:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.LNSS.HHZ. 2017-01-23T16:20:56.60 0.6 undecidable manual S 277 0.2113 50 0.05 48
IV.RM33.EHZ. 2017-01-23T16:20:53.23 0.6 undecidable manual S 230 0.107 133 -0.2 48
IV.T1212.EHZ. 2017-01-23T16:20:53.81 0.3 undecidable manual P 310 0.2698 50 -0.05 72
IV.LNSS.HHZ. 2017-01-23T16:20:52.93 0.3 undecidable manual P 277 0.2113 50 0.07 72
IV.T1218.EHZ. 2017-01-23T16:20:52.24 0.1 undecidable manual P 301 0.1799 50 -0.09 97
IV.GIGS.HHZ. 2017-01-23T16:20:52.95 1.0 undecidable manual P 124 0.2203 50 -0.07 24
IV.TERO.HHZ. 2017-01-23T16:20:52.83 0.1 undecidable manual P 78 0.2095 50 -0.01 98
IV.RM33.EHZ. 2017-01-23T16:20:51.18 0.1 positive manual P 230 0.107 133 0.12 97
IV.T1247.HHZ. 2017-01-23T16:20:51.85 3.0 negative manual P 0.19 0
IV.T1299.EHZ. 2017-01-23T16:20:50.48 0.1 undecidable manual P 331 0.0648 147 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHE. ML:1.2 0.000197 1.04 AML other m 2017-01-23T16:20:53.55
IV.RM33.EHN. ML:1.2 0.000188 0.84 AML other m 2017-01-23T16:20:53.73
IV.T1299.EHE. ML:1.2 0.0002305 0.2 AML other m 2017-01-23T16:20:52.28
IV.T1299.EHN. ML:1.3 0.0002485 0.24 AML other m 2017-01-23T16:20:52.22
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