Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 25-08-2016 and time 13:28:42 (Italy) in region 5 km NW Arquata del Tronto (AP)

A magnitude ML 2.3 earthquake occured in region: 5 km NW Arquata del Tronto (AP), on

  • 25-08-2016 11:28:42 (UTC)
  • 25-08-2016 13:28:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8030, 13.2600 at 15 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
Arquata del Tronto AP 5 1178 1178
Montegallo AP 8 523 1701
Accumoli RI 12 667 2368
Montemonaco AP 12 604 2972
Acquasanta Terme AP 13 2916 5888
Castelsantangelo sul Nera MC 13 281 6169
Norcia PG 14 4957 11126
Montefortino FM 17 1178 12304
Ussita MC 19 444 12748
Roccafluvione AP 19 2010 14758
Amatrice RI 19 2657 17415
Palmiano AP 20 196 17611
Visso MC 20 1107 18718
Preci PG 20 724 19442

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km W of Teramo (54892 inhabitants)
48 Km E of Foligno (57155 inhabitants)
51 Km N of L'Aquila (69753 inhabitants)
57 Km E of Terni (111501 inhabitants)
79 Km E of Perugia (166134 inhabitants)
80 Km W of Montesilvano (53738 inhabitants)
87 Km W of Pescara (121014 inhabitants)
90 Km NW of Chieti (51815 inhabitants)
93 Km S of Ancona (100861 inhabitants)
99 Km NE of Guidonia Montecelio (88673 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 2.3 2016-08-25
11:28:42		 42.8032 13.26 15 2019-02-12
13:57:28		 Bollettino Sismico Italiano INGV 38989481
Reviewed
Rev100 		ML 2.2 2016-08-25
11:28:42		 42.8022 13.2648 11 2016-08-25
11:45:26		 Sala Sismica INGV-Roma 27180901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-08-25 11:28:42 ± 0.05
Latitude 42.8032 ± 0.0018
Longitude 13.2600 ± 0.0037
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 38989481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 298
Semi-minor axis of confidence ellipse (meter) 62
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 251
Circular confidence region, given by single value of horizontal uncertainty (meter) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 58
Number of associated phases, regardless of their use for origin computation 67
Number of defining phases 60
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.90292
Number of stations at which the event was observed 41
Number of stations from which data was used for origin computation 34
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 27180901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-08-25 11:45:26

ML:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 38989481
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-01-13 09:26:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PTRJ.HHZ. 2016-08-25T11:29:36.99 3.0 undecidable manual Sg 2.85 0
IV.LPEL.HHZ. 2016-08-25T11:29:17.99 3.0 undecidable manual S 0.39 0
IV.LATB.EHZ. 2016-08-25T11:29:03.66 3.0 positive manual P -1.75 0
IV.FIAM.HHZ. 2016-08-25T11:29:01.23 0.3 undecidable manual S 191 60.495 95 0.4 63
IV.MGAB.HHZ. 2016-08-25T11:29:00.50 3.0 positive manual P 2.01 0
IV.EL6.EHZ. 2016-08-25T11:29:00.88 0.3 undecidable manual S 348 59.7957 95 0.25 66
IV.VVLD.HHZ. 2016-08-25T11:28:59.74 3.0 undecidable manual P -0.92 0
IV.PIEI.HHZ. 2016-08-25T11:28:59.32 0.3 undecidable manual P 324 100.2219 93 0.27 60
IV.SEF1.HNN. 2016-08-25T11:28:57.26 0.1 undecidable manual S 326 45.8208 97 0.34 88
IV.ARVD.HHZ. 2016-08-25T11:28:56.04 0.6 undecidable manual P 342 81.252 94 -0.1 44
IV.MDAR.HNN. 2016-08-25T11:28:56.82 0.6 undecidable manual S 348 44.2224 98 0.3 45
IV.GIGS.HHZ. 2016-08-25T11:28:56.70 0.3 undecidable manual S 147 46.4202 97 -0.4 66
IV.CESI.HHZ. 2016-08-25T11:28:54.33 0.3 undecidable manual S 308 36.5412 100 -0.16 70
IV.T0110.HHZ. 2016-08-25T11:28:54.94 0.6 undecidable manual P 146 76.368 94 -0.44 41
IV.T1215.EHZ. 2016-08-25T11:28:53.30 0.3 undecidable manual S 270 31.8459 102 0.04 72
IV.TERO.HNZ. 2016-08-25T11:28:53.63 0.3 undecidable manual S 125 34.4433 101 -0.3 69
IV.ATCC.EHZ. 2016-08-25T11:28:53.86 0.3 undecidable manual P 310 65.7897 95 0.1 67
IV.CSP1.EHZ. 2016-08-25T11:28:53.35 0.3 undecidable manual S 352 32.3454 102 -0.03 73
IV.CAMP.HHE. 2016-08-25T11:28:53.16 0.6 undecidable manual S 158 32.0457 102 -0.15 47
IV.RM33.EHZ. 2016-08-25T11:28:53.67 0.3 undecidable manual S 187 32.8449 102 0.16 70
IV.VCEL.EHZ. 2016-08-25T11:28:53.65 0.6 undecidable manual P 134 65.5899 95 -0.08 45
IV.EL6.EHZ. 2016-08-25T11:28:52.95 0.3 undecidable manual P 348 59.7957 95 0.12 67
IV.SNTG.HHZ. 2016-08-25T11:28:52.16 0.6 undecidable manual P 333 56.3991 96 -0.16 45
IV.LNSS.HHZ. 2016-08-25T11:28:52.53 0.3 undecidable manual S 219 28.5492 105 0.14 71
IV.ASSB.HHZ. 2016-08-25T11:28:52.18 3.0 undecidable manual P 0.01 0
IV.GUMA.HHZ. 2016-08-25T11:28:52.82 0.3 undecidable manual S 12 29.4483 104 0.19 70
IV.TRTR.HHZ. 2016-08-25T11:28:52.99 3.0 negative manual P 0.54 0
IV.FIAM.HHZ. 2016-08-25T11:28:52.70 0.3 undecidable manual P 191 60.495 95 -0.24 66
IV.FDMO.HHZ. 2016-08-25T11:28:52.44 0.3 undecidable manual S 332 29.4483 104 -0.19 71
IV.FEMA.HNZ. 2016-08-25T11:28:51.27 0.3 undecidable manual S 316 24.5532 108 -0.11 72
IV.T1243.HNZ. 2016-08-25T11:28:50.09 0.1 undecidable manual S 128 19.3695 116 0 99
IV.OFFI.HHZ. 2016-08-25T11:28:50.24 0.1 undecidable manual P 67 37.5291 100 0.8 76
IV.SEF1.HNN. 2016-08-25T11:28:50.42 0.1 undecidable manual P 326 45.8208 97 -0.27 90
IV.MNTP.HNZ. 2016-08-25T11:28:50.28 0.6 undecidable manual P 25 40.8258 99 0.36 44
IV.MDAR.HNN. 2016-08-25T11:28:50.00 0.1 undecidable manual P 348 44.2224 98 -0.46 87
IV.GIGS.HHZ. 2016-08-25T11:28:50.67 0.6 undecidable manual P 147 46.4202 97 -0.12 47
IV.T1212.HNZ. 2016-08-25T11:28:49.40 0.3 undecidable manual S 252 18.4704 118 -0.47 67
IV.CESI.HHZ. 2016-08-25T11:28:49.25 0.3 undecidable manual P 308 36.5412 100 -0.03 72
IV.T1201.HNZ. 2016-08-25T11:28:49.72 0.3 undecidable manual S 183 16.1727 122 0.37 70
IV.CSP1.EHZ. 2016-08-25T11:28:48.54 0.1 positive manual P 352 32.3454 102 -0.11 96
IV.CAMP.HHE. 2016-08-25T11:28:48.46 0.3 undecidable manual P 158 32.0457 102 -0.14 71
IV.FDMO.HHZ. 2016-08-25T11:28:48.03 0.1 positive manual P 332 29.4483 104 -0.18 95
IV.RM33.EHZ. 2016-08-25T11:28:48.69 0.1 positive manual P 187 32.8449 102 -0.03 97
IV.T1213.HNZ. 2016-08-25T11:28:48.34 0.3 undecidable manual S 232 13.9749 128 -0.52 66
IV.T1215.EHZ. 2016-08-25T11:28:48.47 0.3 undecidable manual P 270 31.8459 102 -0.1 72
IV.LNSS.HHZ. 2016-08-25T11:28:48.08 0.6 positive manual P 219 28.5492 105 0 49
IV.TERO.HNZ. 2016-08-25T11:28:48.75 0.3 undecidable manual P 125 34.4433 101 -0.21 70
IV.T1241.HNZ. 2016-08-25T11:28:48.83 0.3 undecidable manual S 67 15.1737 125 -0.28 70
IV.NRCA.HNZ. 2016-08-25T11:28:48.12 0.3 undecidable manual S 286 12.3765 132 -0.41 69
IV.MC2.EHZ. 2016-08-25T11:28:48.83 0.1 undecidable manual S 334 13.3755 129 0.1 99
IV.GUMA.HHZ. 2016-08-25T11:28:48.44 0.1 positive manual P 12 29.4483 104 0.23 93
IV.T1202.EHZ. 2016-08-25T11:28:48.80 0.3 undecidable manual S 195 11.3775 135 0.45 69
IV.MMO1.HNZ. 2016-08-25T11:28:48.19 0.1 undecidable manual S 27 11.9769 133 -0.27 94
IV.FEMA.HNZ. 2016-08-25T11:28:47.41 0.3 undecidable manual P 316 24.5532 108 -0.08 73
IV.T1214.HNZ. 2016-08-25T11:28:47.56 0.3 undecidable manual S 221 6.3936 153 0 75
IV.T1242.HNZ. 2016-08-25T11:28:47.92 0.3 undecidable manual S 303 5.3946 157 0.48 70
IV.T1241.HNZ. 2016-08-25T11:28:46.10 0.1 negative manual P 67 15.1737 125 -0.08 99
IV.MC2.EHZ. 2016-08-25T11:28:46.02 0.1 positive manual P 334 13.3755 129 0.06 99
IV.T1201.HNZ. 2016-08-25T11:28:46.52 0.1 undecidable manual P 183 16.1727 122 0.2 96
IV.T1243.HNZ. 2016-08-25T11:28:46.66 0.1 negative manual P 128 19.3695 116 -0.08 98
IV.T1213.HNZ. 2016-08-25T11:28:46.06 0.1 positive manual P 232 13.9749 128 0.03 100
IV.T1212.HNZ. 2016-08-25T11:28:46.63 0.1 undecidable manual P 252 18.4704 118 0.01 99
IV.NRCA.HNZ. 2016-08-25T11:28:45.79 0.3 negative manual P 286 12.3765 132 -0.05 75
IV.T1202.EHZ. 2016-08-25T11:28:45.93 0.1 undecidable manual P 195 11.3775 135 0.19 97
IV.MMO1.HNZ. 2016-08-25T11:28:45.74 0.1 positive manual P 27 11.9769 133 -0.06 99
IV.T1214.HNZ. 2016-08-25T11:28:45.39 0.1 positive manual P 221 6.3936 153 0.11 100
IV.T1242.HNZ. 2016-08-25T11:28:45.57 0.3 undecidable manual P 303 5.3946 157 0.36 71
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHN. ML:2.1 0.000263 0.78 AML other m 2016-08-25T11:29:01.44
IV.ASSB.HHE. ML:2.0 0.0002375 0.28 AML other m 2016-08-25T11:29:00.38
IV.ATCC.EHE. ML:2.0 0.0002005 0.36 AML other m 2016-08-25T11:29:04.43
IV.CESI.HHN. ML:2.4 0.0009535 1.72 AML other m 2016-08-25T11:28:55.07
IV.CESI.HHE. ML:2.1 0.00044050000000000003 0.24 AML other m 2016-08-25T11:28:55.54
IV.FDMO.HHN. ML:2.4 0.00125 0.22 AML other m 2016-08-25T11:28:52.74
IV.FDMO.HHE. ML:2.3 0.001016 0.22 AML other m 2016-08-25T11:28:52.98
IV.GUMA.HHE. ML:2.4 0.0010895 0.4 AML other m 2016-08-25T11:28:53.58
IV.GUMA.HHN. ML:2.4 0.001135 0.18 AML other m 2016-08-25T11:28:53.69
IV.LNSS.HHE. ML:2.7 0.002155 1.78 AML other m 2016-08-25T11:28:52.89
IV.LNSS.HHN. ML:2.4 0.001265 0.1 AML other m 2016-08-25T11:28:53.27
IV.OFFI.HHN. ML:2.6 0.00152 0.36 AML other m 2016-08-25T11:28:57.60
IV.OFFI.HHE. ML:2.6 0.0014399999999999999 1.78 AML other m 2016-08-25T11:28:58.97
IV.RM33.HNE. ML:2.1 0.0005445 0.56 AML other m 2016-08-25T11:28:54.50
IV.RM33.EHN. ML:2.2 0.000682 1.7 AML other m 2016-08-25T11:28:54.96
IV.RM33.HNN. ML:2.2 0.0006779999999999999 1.7 AML other m 2016-08-25T11:28:54.96
IV.RM33.EHE. ML:2.1 0.0005175 0.26 AML other m 2016-08-25T11:28:55.50
IV.TERO.HHE. ML:2.5 0.001215 0.1 AML other m 2016-08-25T11:28:54.89
IV.TERO.HHN. ML:2.3 0.0008965 0.38 AML other m 2016-08-25T11:28:54.52
IV.VCEL.EHN. ML:2.3 0.0003255 0.38 AML other m 2016-08-25T11:29:05.44
IV.VCEL.EHE. ML:2.2 0.00028500000000000004 0.18 AML other m 2016-08-25T11:29:04.56
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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