Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 23-07-2016 and time 22:04:47 (Italy) in region 1 km W Pizzoli (AQ)

A magnitude ML 1.6 earthquake occured in region: 1 km W Pizzoli (AQ), on

  • 23-07-2016 20:04:47 (UTC)
  • 23-07-2016 22:04:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.4350, 13.2840 at 11 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Pizzoli AQ 1 4326 4326
Barete AQ 2 737 5063
Cagnano Amiterno AQ 6 1369 6432
Scoppito AQ 7 3727 10159
Capitignano AQ 10 665 10824
Montereale AQ 11 2581 13405
L'Aquila AQ 13 69753 83158
Borbona RI 15 617 83775
Campotosto AQ 16 542 84317
Tornimparte AQ 16 3187 87504
Lucoli AQ 17 1011 88515
Antrodoco RI 17 2588 91103
Posta RI 18 694 91797
Borgo Velino RI 19 972 92769
Micigliano RI 19 127 92896

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km NW of L'Aquila (69753 inhabitants)
43 Km SW of Teramo (54892 inhabitants)
54 Km E of Terni (111501 inhabitants)
66 Km NE of Tivoli (56533 inhabitants)
67 Km NE of Guidonia Montecelio (88673 inhabitants)
72 Km W of Montesilvano (53738 inhabitants)
73 Km W of Chieti (51815 inhabitants)
75 Km SE of Foligno (57155 inhabitants)
77 Km W of Pescara (121014 inhabitants)
89 Km NE of Roma (2864731 inhabitants)
93 Km NE of Velletri (53303 inhabitants)
97 Km E of Viterbo (67173 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.6 2016-07-23
20:04:47		 42.4347 13.2835 11 2016-11-08
11:51:04		 Bollettino Sismico Italiano INGV 28409681
Reviewed
Rev100 		ML 1.7 2016-07-23
20:04:48		 42.4477 13.2832 12 2016-07-23
20:13:19		 Sala Sismica INGV-Roma 26538741
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-07-23 20:04:47 ± 0.06
Latitude 42.4347 ± 0.0054
Longitude 13.2835 ± 0.0024
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 28409681

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 580
Semi-minor axis of confidence ellipse (meter) 160
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 358
Circular confidence region, given by single value of horizontal uncertainty (meter) 580.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 75
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.08993
Epicentral distance of station farthest from the epicenter (degree) 0.90382
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 20
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 28409681
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2016-09-06 10:08:39

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 9
Type of magnitude ML
Reference to an origin 26538741
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-07-23 20:13:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2016-07-23T20:05:05.02 0.6 undecidable manual P 352 100.3218 90 0.23 41
IV.NRCA.HHZ. 2016-07-23T20:05:02.63 0.6 undecidable manual S 343 46.3203 90 -0.11 48
IV.LPEL.HHZ. 2016-07-23T20:05:02.25 0.6 undecidable manual P 120 85.5477 90 -0.26 43
IV.ASSB.HHZ. 2016-07-23T20:05:02.31 0.3 undecidable manual P 323 84.4488 90 -0.04 67
IV.ARRO.EHZ. 2016-07-23T20:05:02.53 0.6 undecidable manual S 291 45.3213 90 0.08 47
IV.CSP1.EHZ. 2016-07-23T20:05:00.43 0.1 undecidable manual P 355 73.1712 90 -0.19 90
IV.FDMO.HHZ. 2016-07-23T20:04:59.65 0.1 undecidable manual P 347 68.6757 90 -0.26 89
IV.INTR.HHZ. 2016-07-23T20:04:59.91 0.6 undecidable manual P 132 69.375 90 -0.1 45
IV.TERO.HHZ. 2016-07-23T20:04:58.89 0.3 undecidable manual S 51 33.5442 90 -0.42 69
IV.CERT.HHZ. 2016-07-23T20:04:58.52 0.3 undecidable manual P 205 59.2962 90 0.05 70
IV.PTQR.HHE. 2016-07-23T20:04:57.03 0.6 undecidable manual P 168 46.8198 90 0.49 44
IV.LNSS.HHZ. 2016-07-23T20:04:57.65 0.6 undecidable manual S 313 27.2505 90 0 49
IV.SMA1.EHZ. 2016-07-23T20:04:56.45 0.3 undecidable manual S 11 22.1556 90 0.17 72
IV.GIGS.HHZ. 2016-07-23T20:04:56.48 0.3 undecidable manual S 85 23.754 90 -0.24 72
IV.ARRO.EHZ. 2016-07-23T20:04:56.12 0.1 undecidable manual P 291 45.3213 90 -0.19 94
IV.T0110.HHZ. 2016-07-23T20:04:56.74 0.1 undecidable manual P 119 46.4202 90 0.26 92
IV.FIAM.HHZ. 2016-07-23T20:04:56.64 0.6 undecidable manual S 216 22.9548 90 0.14 49
IV.NRCA.HHZ. 2016-07-23T20:04:56.23 0.1 undecidable manual P 343 46.3203 90 -0.25 93
IV.VCEL.EHZ. 2016-07-23T20:04:56.68 0.1 undecidable manual P 95 45.8208 90 0.28 91
IV.FAGN.HHZ. 2016-07-23T20:04:55.14 0.3 undecidable manual P 127 30.9468 90 1.04 54
IV.TERO.HHZ. 2016-07-23T20:04:54.12 0.1 undecidable manual P 51 33.5442 90 -0.38 93
IV.CAMP.HHZ. 2016-07-23T20:04:54.27 0.3 undecidable manual S 42 15.1737 90 -0.16 75
IV.LNSS.HHZ. 2016-07-23T20:04:53.47 0.1 undecidable manual P 313 27.2505 90 -0.07 100
IV.RM33.EHZ. 2016-07-23T20:04:53.19 0.3 undecidable manual S 326 9.9789 120 0.09 75
IV.SMA1.EHZ. 2016-07-23T20:04:52.74 0.1 undecidable manual P 11 22.1556 90 0 100
IV.GIGS.HHZ. 2016-07-23T20:04:52.84 0.3 undecidable manual P 85 23.754 90 -0.15 74
IV.FIAM.HHZ. 2016-07-23T20:04:52.97 0.1 undecidable manual P 216 22.9548 90 0.1 99
IV.CAMP.HHZ. 2016-07-23T20:04:51.76 0.1 undecidable manual P 42 15.1737 90 0.08 100
IV.RM33.EHZ. 2016-07-23T20:04:51.13 0.1 undecidable manual P 326 9.9789 120 0.23 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHN. ML:1.5 0.00008824999999999999 0.18 AML other m 2016-07-23T20:05:03.49
IV.ARRO.EHE. ML:1.3 0.000058055000000000006 1.58 AML other m 2016-07-23T20:05:04.38
IV.CAMP.HHE. ML:1.6 0.00036449999999999997 0.34 AML other m 2016-07-23T20:04:54.53
IV.CAMP.HHN. ML:1.8 0.000598 0.38 AML other m 2016-07-23T20:04:54.54
IV.CERT.HHN. ML:1.3 0.0000401 1.04 AML other m 2016-07-23T20:05:09.01
IV.CERT.HHE. ML:1.4 0.000051750000000000004 0.54 AML other m 2016-07-23T20:05:11.10
IV.FAGN.HHE. ML:1.9 0.000382 0.52 AML other m 2016-07-23T20:05:04.26
IV.FAGN.HHN. ML:1.8 0.00026749999999999994 0.48 AML other m 2016-07-23T20:05:06.36
IV.FDMO.HHN. ML:1.3 0.000037000000000000005 0.22 AML other m 2016-07-23T20:05:10.00
IV.FDMO.HHE. ML:1.4 0.0000419 1.36 AML other m 2016-07-23T20:05:11.67
IV.FIAM.HHN. ML:1.4 0.000161 1.06 AML other m 2016-07-23T20:04:58.10
IV.FIAM.HHE. ML:1.4 0.0001555 0.32 AML other m 2016-07-23T20:04:59.96
IV.GIGS.HHN. ML:1.3 0.0001255 0.58 AML other m 2016-07-23T20:04:57.27
IV.GIGS.HHE. ML:1.2 0.0000925 1.1 AML other m 2016-07-23T20:04:57.89
IV.INTR.HHE. ML:1.2 0.000028400000000000003 0.34 AML other m 2016-07-23T20:05:14.20
IV.INTR.HHN. ML:1.4 0.0000425 0.64 AML other m 2016-07-23T20:05:20.07
IV.LNSS.HHN. ML:1.6 0.00020800000000000001 1.1 AML other m 2016-07-23T20:05:00.68
IV.LNSS.HHE. ML:1.6 0.00023349999999999998 0.16 AML other m 2016-07-23T20:05:00.34
IV.LPEL.HHN. ML:1.4 0.000029250000000000003 0.32 AML other m 2016-07-23T20:05:18.89
IV.LPEL.HHE. ML:1.4 0.000037250000000000004 0.24 AML other m 2016-07-23T20:05:16.33
IV.NRCA.HHN. ML:2.0 0.00028100000000000005 0.1 AML other m 2016-07-23T20:05:04.91
IV.NRCA.HHE. ML:2.1 0.000325 1.16 AML other m 2016-07-23T20:05:03.79
IV.RM33.HNE. ML:1.8 0.000757 0.24 AML other m 2016-07-23T20:04:53.44
IV.RM33.EHE. ML:1.8 0.000741 0.26 AML other m 2016-07-23T20:04:53.57
IV.RM33.HNN. ML:1.9 0.000975 0.26 AML other m 2016-07-23T20:04:53.34
IV.RM33.EHN. ML:1.9 0.0009535 0.24 AML other m 2016-07-23T20:04:53.34
IV.SMA1.EHN. ML:2.6 0.002325 0.38 AML other m 2016-07-23T20:04:56.87
IV.SMA1.EHE. ML:2.6 0.00242 0.26 AML other m 2016-07-23T20:04:56.77
IV.T0110.HHN. ML:1.7 0.000154 0.26 AML other m 2016-07-23T20:05:06.03
IV.T0110.HHE. ML:1.8 0.00016599999999999997 1.2 AML other m 2016-07-23T20:05:08.59
IV.TERO.HHN. ML:1.7 0.0001875 0.14 AML other m 2016-07-23T20:04:59.94
IV.TERO.HHE. ML:1.6 0.0001725 0.78 AML other m 2016-07-23T20:04:59.63
IV.VCEL.EHE. ML:1.6 0.000131 0.56 AML other m 2016-07-23T20:05:06.51
IV.VCEL.EHN. ML:1.7 0.00015845 1.58 AML other m 2016-07-23T20:05:05.05
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download