Earthquake 6 km W Arquata del Tronto (AP), Magnitude Mw 3.3, 31 August 2016 time 13:23:04 (Timezone UTC)

A magnitude Mw 3.3 earthquake occured in region: 6 km W Arquata del Tronto (AP), on

31-08-2016 13:23:04 (UTC)
31-08-2016 15:23:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7510, 13.2300 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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Display location by

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).

Municipality	Region	Distance (km)	Inhabitants	Cumulative Inhabitants
Arquata del Tronto	AP	6	1178	1178
Accumoli	RI	6	667	1845
Norcia	PG	12	4957	6802
Montegallo	AP	13	523	7325
Amatrice	RI	14	2657	9982
Acquasanta Terme	AP	15	2916	12898
Cittareale	RI	16	482	13380
Castelsantangelo sul Nera	MC	17	281	13661
Cascia	PG	18	3217	16878
Montemonaco	AP	18	604	17482

Municipalities with at least 50000 inhabitants

An earthquake occurred to

40 Km W of Teramo (54892 inhabitants)

46 Km NW of L'Aquila (69753 inhabitants)

49 Km E of Foligno (57155 inhabitants)

52 Km E of Terni (111501 inhabitants)

79 Km SE of Perugia (166134 inhabitants)

80 Km W of Montesilvano (53738 inhabitants)

87 Km W of Pescara (121014 inhabitants)

89 Km NW of Chieti (51815 inhabitants)

93 Km NE of Guidonia Montecelio (88673 inhabitants)

94 Km NE of Tivoli (56533 inhabitants)

99 Km S of Ancona (100861 inhabitants)

99 Km E of Viterbo (67173 inhabitants)

Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is 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

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.

Shakemap

These three maps show the results of the analysis using the software ShakeMap designed to provide the level of ground shaking experienced in a region using the data recorded by seismometers and strong motion instruments and seismological information regarding the attenuation of the wavefield with distance and the site characteristics. The Shakemaps are determined for research purposes to provide fast estimates of the level of ground shaking produced by the earthquake. The maps are calculated automatically and updated as more data become available. See http://shakemap.ingv.it for additional information. The black star indicates the epicenter. The triangles show the accelerometric and velocimetric stations used in the calculation, colored according to the recorded shaking.

Intensity Shakemap

This map shows the distribution of instrumental intensities. The intensity is derived through an empirical law that correlates the recorded values of actual ground shaking, e.g., acceleration and velocity, with the macroseismic intensity for Italian earthquakes, as reported in the Italian Macroseismic Database (DBMI15, https://doi.org/10.13127/cpti/cpti15.3).

Peak ground acceleration Shakemap

This map shows the distribution of peak ground acceleration expressed as percent of the acceleration of gravity (i.e., g = 9.81 m/s²).

Peak velocity Shakemap

This map shows the distribution of peak ground velocities expressed in cm/s.

Felt maps

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.

Locations history

Type	Magnitude	Date and Time (UTC)	Latitude	Longitude	Depth (km)	Published time (UTC)	Author	Location ID
Bulletin Rev1000	ML 3.8	2016-08-31 13:23:04	42.7507	13.2305	11	2016-10-05 09:15:37	Bollettino Sismico Italiano INGV	29560051
Reviewed Evaluation Mw Rev501	Mw 3.3	2016-08-31 13:23:04	42.7577	13.236	6	2016-09-20 13:00:26	TDMT-INGV Revised	29283151
Reviewed Rev100	Md 1.4 ML 3.9	2016-08-31 13:23:04	42.7577	13.236	12	2016-08-31 13:44:49	Sala Sismica INGV-Roma	27825371

Preferred location and magnitude until now.

Origin information

Origin

Field	Value
Time (UTC)	2016-08-31 13:23:04 ± 0.04
Latitude	42.7507 ± 0.0018
Longitude	13.2305 ± 0.0037
Depth (km)	11 ± 0 (from location)
Evaluation mode of Origin	manual
Evaluation status of Origin	reviewed
Version	1000 -> BULLETIN-INGV
Event type	earthquake
Origin ID	29560051

Uncertainty

Field	Value
Preferred uncertainty description	uncertainty ellipse
Semi-major axis of confidence ellipse (meter)	308
Semi-minor axis of confidence ellipse (meter)	171
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)	244
Circular confidence region, given by single value of horizontal uncertainty (meter)	310.0
Confidence level of the uncertainty (%)	68

Quality

Field	Value
Largest azimuthal gap in station distribution as seen from epicenter (degree)	26
Number of associated phases, regardless of their use for origin computation	116
Number of defining phases	116
RMS of the travel time residuals of the arrivals used for the origin computation (sec)	0.28
Epicentral distance of station closest to the epicenter (degree)	0.01799
Epicentral distance of station farthest from the epicenter (degree)	1.34269
Number of stations at which the event was observed	86
Number of stations from which data was used for origin computation	86

Magnitudes information

Mw:3.3

Field	Value
Value	3.3
Uncertainty
Num. used stations
Type of magnitude	Mw
Reference to an origin	29283151
Agency	INGV
Autore	TDMT-INGV Revised
Time of creation (UTC)	2016-09-20 13:00:26

ML:3.8

Field	Value
Value	3.8
Uncertainty	0.4
Num. used stations	6
Type of magnitude	ML
Reference to an origin	29560051
Agency	INGV
Autore	Bollettino Sismico Italiano INGV
Time of creation (UTC)	2016-09-26 15:54:14

ML:3.9

Field	Value
Value	3.9
Uncertainty	0.4
Num. used stations	5
Type of magnitude	ML
Reference to an origin	27825371
Agency	INGV
Autore	Sala Sismica INGV-Roma
Time of creation (UTC)	2016-08-31 13:44:47

Md:1.4

Field	Value
Value	1.4
Uncertainty	0.0
Num. used stations	1
Type of magnitude	Md
Reference to an origin	27825371
Agency	INGV
Autore	Sala Sismica INGV-Roma
Time of creation (UTC)	2016-08-31 13:44:47

Picking and Arrival

SCNL	Time	Uncertainty	Polarity	Evaluation_mode	Phase	Azimuth	Distance(km)	Takeoff_angle	Residual	Weight
IV.ARCI.HHZ.	2016-08-31T13:23:28.94	0.3	undecidable	manual	P	275	143.2455	90	1.22	37
IV.MIDA.HHZ.	2016-08-31T13:23:28.34	0.6	undecidable	manual	P	145	149.0397	90	-0.26	36
IV.CRE.HHZ.	2016-08-31T13:23:28.03	0.6	undecidable	manual	P	313	141.3474	90	0.61	33
IV.CERA.HHZ.	2016-08-31T13:23:27.95	0.6	undecidable	manual	P	153	143.3454	90	0.21	37
TV.SF04.EHZ.	2016-08-31T13:23:26.13	0.6	undecidable	manual	P	275	128.1717	90	0.74	32
IV.MCIV.HHZ.	2016-08-31T13:23:26.18	0.3	positive	manual	P	272	126.5733	90	1.03	42
IV.TOLF.HHZ.	2016-08-31T13:23:25.07	0.3	positive	manual	P	233	126.2736	90	-0.04	60
IV.PARC.HHZ.	2016-08-31T13:23:25.75	0.3	undecidable	manual	P	321	127.872	90	0.4	55
IV.PE3.EHZ.	2016-08-31T13:23:24.81	1.0	undecidable	manual	P	331	120.4905	90	0.6	17
IV.POFI.HHZ.	2016-08-31T13:23:24.55	0.6	undecidable	manual	P	161	121.2897	90	0.22	38
IV.FSSB.HHZ.	2016-08-31T13:23:23.10	0.3	undecidable	manual	P	341	110.8002	90	0.39	57
IV.RDP.HHZ.	2016-08-31T13:23:23.90	0.6	undecidable	manual	P	201	117.8931	90	0.09	40
IV.MPAG.EHZ.	2016-08-31T13:23:22.10	0.3	undecidable	manual	P	339	104.6175	90	0.34	58
IV.SACS.HHZ.	2016-08-31T13:23:22.76	0.1	positive	manual	P	276	108.0141	90	0.47	74
IV.GUAR.HHZ.	2016-08-31T13:23:22.80	0.6	undecidable	manual	P	176	106.3158	90	0.78	33
IV.LPEL.HHZ.	2016-08-31T13:23:22.11	0.3	undecidable	manual	P	135	110.4006	90	-0.55	54
IV.ATMI.HHZ.	2016-08-31T13:23:22.40	0.6	undecidable	manual	P	310	101.4207	90	1.13	28
IV.NARO.HHZ.	2016-08-31T13:23:21.83	0.6	undecidable	manual	P	331	108.9132	90	-0.6	36
IV.PIEI.HHZ.	2016-08-31T13:23:21.76	0.3	undecidable	manual	P	327	103.7184	90	0.14	61
IV.ATPI.EHZ.	2016-08-31T13:23:21.74	0.3	undecidable	manual	P	319	102.6195	90	0.28	59
IV.VVLD.HHZ.	2016-08-31T13:23:21.63	0.6	undecidable	manual	P	162	102.9192	90	0.13	41
IV.FIAM.HHZ.	2016-08-31T13:23:21.47	0.3	undecidable	manual	S	190	54.3012	90	0.28	64
IV.FRON.EHZ.	2016-08-31T13:23:20.13	0.3	undecidable	manual	P	335	94.4388	90	-0.06	63
IV.ATVO.HHZ.	2016-08-31T13:23:20.56	0.3	undecidable	manual	P	317	96.7254	90	0	63
IV.MGAB.HHZ.	2016-08-31T13:23:20.27	0.3	undecidable	manual	P	282	92.7405	90	0.34	59
IV.AOI.HHZ.	2016-08-31T13:23:20.43	0.3	undecidable	manual	P	19	93.6396	90	0.36	60
IV.INTR.HHZ.	2016-08-31T13:23:20.50	0.3	undecidable	manual	P	146	98.8233	90	-0.38	58
IV.ATTE.HHZ.	2016-08-31T13:23:19.12	0.3	undecidable	manual	P	305	86.7465	90	0.11	63
IV.CERT.HHZ.	2016-08-31T13:23:19.28	0.1	positive	manual	P	193	91.242	90	-0.42	79
IV.ATFO.HHZ.	2016-08-31T13:23:19.00	0.3	undecidable	manual	P	322	86.7465	90	0	65
IV.MTCE.HHZ.	2016-08-31T13:23:19.11	0.1	positive	manual	P	207	90.1431	90	-0.42	79
IV.MURB.HHZ.	2016-08-31T13:23:18.26	0.3	undecidable	manual	P	315	80.6637	90	0.19	63
IV.ARVD.HHZ.	2016-08-31T13:23:18.90	0.3	undecidable	manual	P	344	86.1471	90	-0.02	65
IV.SSFR.HHZ.	2016-08-31T13:23:18.76	0.3	undecidable	manual	P	335	84.249	90	0.13	63
IV.PP3.HNZ.	2016-08-31T13:23:18.11	0.3	undecidable	manual	P	24	76.0683	90	0.75	54
IV.GIGS.HHZ.	2016-08-31T13:23:17.90	0.6	undecidable	manual	S	140	43.2234	90	-0.33	44
IV.CESI.HHZ.	2016-08-31T13:23:17.04	0.6	undecidable	manual	S	317	38.7279	90	0.03	47
IV.SRES.HHZ.	2016-08-31T13:23:17.95	0.1	positive	manual	P	226	81.9513	90	-0.33	82
IV.T1211.HNN.	2016-08-31T13:23:17.36	0.6	undecidable	manual	S	232	39.0276	90	0.26	44
IV.PTQR.HHZ.	2016-08-31T13:23:17.84	0.1	positive	manual	P	170	82.0512	90	-0.44	80
IV.CADA.HNZ.	2016-08-31T13:23:17.12	0.3	undecidable	manual	P	41	65.3901	90	1.4	41
IV.T0110.HHZ.	2016-08-31T13:23:16.67	0.1	negative	manual	P	142	73.0713	90	-0.23	84
IV.ATCC.EHZ.	2016-08-31T13:23:16.05	0.1	negative	manual	P	315	67.9764	90	-0.07	89
IV.T1247.HHZ.	2016-08-31T13:23:16.21	0.6	undecidable	manual	S	171	34.743	90	0.26	45
IV.FOSV.EHZ.	2016-08-31T13:23:16.45	0.3	undecidable	manual	P	328	71.373	90	-0.19	64
IV.CSP1.EHZ.	2016-08-31T13:23:16.81	0.6	undecidable	manual	S	357	37.9287	90	0.01	47
IV.CING.HHZ.	2016-08-31T13:23:16.21	0.1	positive	manual	P	358	69.375	90	-0.12	87
IV.EL6.EHZ.	2016-08-31T13:23:15.57	0.1	positive	manual	P	351	64.9905	90	-0.09	88
IV.TRTR.HHE.	2016-08-31T13:23:15.53	0.1	positive	manual	P	83	55.9995	90	1.26	60
IV.TERO.HHZ.	2016-08-31T13:23:15.39	0.6	undecidable	manual	S	115	33.6441	90	-0.26	45
IV.VCEL.EHZ.	2016-08-31T13:23:15.58	0.1	negative	manual	P	128	63.5919	90	0.14	88
IV.FDMO.HHZ.	2016-08-31T13:23:15.47	0.3	undecidable	manual	S	340	33.744	90	-0.22	68
IV.SNTG.HHZ.	2016-08-31T13:23:14.77	0.3	undecidable	manual	P	337	60.6948	90	-0.22	65
IV.RM33.EHZ.	2016-08-31T13:23:14.07	0.6	undecidable	manual	S	183	26.8509	90	0.22	46
IV.T1215.EHZ.	2016-08-31T13:23:14.61	0.6	undecidable	manual	S	281	30.0477	90	-0.08	48
IV.FAGN.HHZ.	2016-08-31T13:23:14.20	0.3	undecidable	manual	P	152	61.0944	90	-0.85	53
IV.T1246.HHZ.	2016-08-31T13:23:14.12	0.6	undecidable	manual	S	131	28.3494	90	-0.12	47
IV.ASSB.HHZ.	2016-08-31T13:23:14.13	0.3	undecidable	manual	P	305	56.5989	90	-0.24	66
IV.GAG1.HNZ.	2016-08-31T13:23:14.27	0.3	undecidable	manual	P	346	55.6998	90	0.05	68
IV.SSM1.HNZ.	2016-08-31T13:23:13.65	0.3	undecidable	manual	P	355	53.2023	90	-0.19	66
IV.MNTP.HNZ.	2016-08-31T13:23:13.36	0.1	positive	manual	P	24	47.1195	90	0.46	85
IV.CESX.HHZ.	2016-08-31T13:23:13.94	0.1	positive	manual	P	253	54.8007	90	-0.15	90
IV.FIU1.HNZ.	2016-08-31T13:23:13.93	0.3	undecidable	manual	P	334	54.3012	90	-0.08	68
IV.FIAM.HHZ.	2016-08-31T13:23:13.91	0.1	positive	manual	P	190	54.3012	90	-0.11	90
IV.FEMA.HNZ.	2016-08-31T13:23:13.85	0.3	undecidable	manual	S	328	27.6501	90	-0.22	69
IV.SEF1.HNZ.	2016-08-31T13:23:13.12	0.3	undecidable	manual	P	332	49.617	90	-0.16	67
IV.MDAR.HNN.	2016-08-31T13:23:13.07	0.3	undecidable	manual	P	352	49.5171	90	-0.21	67
IV.ARRO.EHZ.	2016-08-31T13:23:12.08	0.1	positive	manual	P	244	42.4242	90	-0.1	93
IV.OFFI.HHZ.	2016-08-31T13:23:12.93	0.1	positive	manual	P	61	42.3243	90	0.77	77
IV.T1216.HNZ.	2016-08-31T13:23:12.39	0.6	undecidable	manual	S	312	23.1546	91	-0.47	44
IV.LNSS.HHZ.	2016-08-31T13:23:12.82	0.6	undecidable	manual	S	223	22.5552	91	0.11	47
IV.MC2.EHZ.	2016-08-31T13:23:11.51	0.3	undecidable	manual	S	349	18.1707	91	-0.01	73
IV.MMO1.EHZ.	2016-08-31T13:23:11.19	0.3	undecidable	manual	S	25	18.2706	91	-0.36	67
IV.CSP1.EHZ.	2016-08-31T13:23:11.31	0.1	positive	manual	P	357	37.9287	90	-0.17	91
IV.T1241.HHZ.	2016-08-31T13:23:11.78	0.6	undecidable	manual	S	54	20.0688	91	-0.26	46
IV.GIGS.HHZ.	2016-08-31T13:23:11.92	0.1	negative	manual	P	140	43.2234	90	-0.38	86
IV.T1211.HNN.	2016-08-31T13:23:11.52	0.1	positive	manual	P	232	39.0276	90	-0.14	93
IV.T1243.HNZ.	2016-08-31T13:23:11.29	0.3	undecidable	manual	S	109	18.7701	91	-0.39	67
IV.CESI.HHZ.	2016-08-31T13:23:11.48	0.1	negative	manual	P	317	38.7279	90	-0.12	93
IV.T1212.HNZ.	2016-08-31T13:23:10.54	0.3	undecidable	manual	S	270	15.1737	94	-0.18	72
IV.TERO.HHZ.	2016-08-31T13:23:10.61	0.1	undecidable	manual	P	115	33.6441	90	-0.21	91
IV.SMA1.EHZ.	2016-08-31T13:23:10.85	0.3	undecidable	manual	S	147	15.873	93	-0.06	73
IV.T1218.HNZ.	2016-08-31T13:23:10.16	0.3	undecidable	manual	S	226	12.9759	103	0.01	73
IV.T1247.HHZ.	2016-08-31T13:23:10.95	0.1	positive	manual	P	171	34.743	90	-0.05	95
IV.FDMO.HHZ.	2016-08-31T13:23:10.62	0.1	negative	manual	P	340	33.744	90	-0.22	91
IV.T1215.EHZ.	2016-08-31T13:23:10.16	0.1	positive	manual	P	281	30.0477	90	-0.11	95
IV.T1299.HNZ.	2016-08-31T13:23:10.52	0.3	undecidable	manual	S	162	13.5753	99	0.21	71
IV.FEMA.HNZ.	2016-08-31T13:23:09.70	0.1	undecidable	manual	P	328	27.6501	90	-0.21	93
IV.T1201.HNZ.	2016-08-31T13:23:09.90	0.6	undecidable	manual	S	171	10.4784	118	0.37	46
IV.LNSS.HHZ.	2016-08-31T13:23:09.08	0.1	positive	manual	P	223	22.5552	91	-0.04	97
IV.RM33.EHZ.	2016-08-31T13:23:09.76	0.1	positive	manual	P	183	26.8509	90	-0.02	96
IV.NRCA.HNZ.	2016-08-31T13:23:09.71	0.3	undecidable	manual	S	314	13.1757	102	-0.49	67
IV.T1246.HHZ.	2016-08-31T13:23:09.87	0.1	positive	manual	P	131	28.3494	90	-0.14	93
IV.T1204.EHZ.	2016-08-31T13:23:09.74	0.3	undecidable	manual	S	140	10.878	116	0.12	73
IV.T1244.EHZ.	2016-08-31T13:23:08.52	0.3	undecidable	manual	S	83	5.4945	145	-0.02	75
IV.T1202.EHZ.	2016-08-31T13:23:08.68	0.3	undecidable	manual	S	185	5.2947	147	0.18	72
IV.MMO1.EHZ.	2016-08-31T13:23:08.22	0.1	positive	manual	P	25	18.2706	91	-0.23	93
IV.T1216.HNZ.	2016-08-31T13:23:08.99	0.1	negative	manual	P	312	23.1546	91	-0.22	93
IV.MC2.EHZ.	2016-08-31T13:23:08.31	0.1	positive	manual	P	349	18.1707	91	-0.13	95
IV.SMA1.EHZ.	2016-08-31T13:23:08.01	0.1	positive	manual	P	147	15.873	93	-0.07	97
IV.T1213.HNZ.	2016-08-31T13:23:08.95	0.3	undecidable	manual	S	251	8.9799	126	-0.25	72
IV.T1241.HHZ.	2016-08-31T13:23:08.52	0.1	positive	manual	P	54	20.0688	91	-0.22	93
IV.T1243.HNZ.	2016-08-31T13:23:08.32	0.1	positive	manual	P	109	18.7701	91	-0.21	93
IV.T1242.HHZ.	2016-08-31T13:23:08.89	0.3	undecidable	manual	S	346	8.9799	126	-0.3	70
IV.T1218.HNZ.	2016-08-31T13:23:07.72	0.1	positive	manual	P	226	12.9759	103	0.07	96
IV.T1213.HNZ.	2016-08-31T13:23:07.05	0.1	negative	manual	P	251	8.9799	126	-0.04	99
IV.NRCA.HNZ.	2016-08-31T13:23:07.50	0.1	undecidable	manual	P	314	13.1757	102	-0.18	96
IV.T1242.HHZ.	2016-08-31T13:23:07.08	0.1	negative	manual	P	346	8.9799	126	-0.01	99
IV.T1299.HNZ.	2016-08-31T13:23:07.94	0.1	positive	manual	P	162	13.5753	99	0.2	94
IV.T1204.EHZ.	2016-08-31T13:23:07.41	0.1	positive	manual	P	140	10.878	116	0.07	98
IV.T1212.HNZ.	2016-08-31T13:23:07.93	0.1	undecidable	manual	P	270	15.1737	94	-0.05	98
IV.T1201.HNZ.	2016-08-31T13:23:07.57	0.1	positive	manual	P	171	10.4784	118	0.28	93
IV.T1214.EHZ.	2016-08-31T13:23:07.87	0.6	undecidable	manual	S	299	1.998	167	-0.29	48
IV.T1214.EHZ.	2016-08-31T13:23:06.43	0.1	negative	manual	P	299	1.998	167	-0.07	100
IV.T1244.EHZ.	2016-08-31T13:23:06.76	0.1	positive	manual	P	83	5.4945	145	0.04	99
IV.T1202.EHZ.	2016-08-31T13:23:06.81	0.1	negative	manual	P	185	5.2947	147	0.11	97

Station Magnitude and Amplitude

SCNL	mag	Generic_amplitude	Period	Type	Category	Unit	Time_window_reference
IV.COR1.HNE.	ML:3.7	0.0056500000000000005	0.58	AML	other	m	2016-08-31T13:23:47.95
IV.COR1.HNN.	ML:3.7	0.004835000000000001	1.1	AML	other	m	2016-08-31T13:23:53.16
IV.MCRV.HHE.	ML:2.9	0.000115	0.66	AML	other	m	2016-08-31T13:24:41.28
IV.MCRV.HHN.	ML:2.8	0.0001036	1.26	AML	other	m	2016-08-31T13:24:46.48
IV.OSSC.HHE.	ML:2.8	0.00020150000000000002	0.72	AML	other	m	2016-08-31T13:24:12.91
IV.OSSC.HHN.	ML:2.7	0.00017749999999999998	0.8	AML	other	m	2016-08-31T13:24:14.42
IV.PP3.HNE.	ML:4.2	0.02525	0.52	AML	other	m	2016-08-31T13:23:31.37
IV.PP3.EHE.	ML:4.2	0.0241	0.52	AML	other	m	2016-08-31T13:23:31.64
IV.PP3.HNN.	ML:4.2	0.02325	0.36	AML	other	m	2016-08-31T13:23:31.52
IV.PP3.EHN.	ML:4.2	0.025549999999999996	0.38	AML	other	m	2016-08-31T13:23:31.53
IV.T1244.EHE.	ML:4.2	0.223	0.26	AML	other	m	2016-08-31T13:23:08.68
IV.T1244.HNE.	ML:4.2	0.2265	0.26	AML	other	m	2016-08-31T13:23:08.68
IV.T1244.EHN.	ML:4.2	0.215	0.26	AML	other	m	2016-08-31T13:23:08.56
IV.T1244.HNN.	ML:4.2	0.2175	0.26	AML	other	m	2016-08-31T13:23:08.69
IV.TERO.HHN.	ML:3.6	0.018	0.56	AML	other	m	2016-08-31T13:23:18.62
IV.TERO.HNN.	ML:3.6	0.0173	0.58	AML	other	m	2016-08-31T13:23:18.63
IV.TERO.HHE.	ML:3.5	0.01315	0.86	AML	other	m	2016-08-31T13:23:18.41
IV.TERO.HNE.	ML:3.5	0.0123	0.86	AML	other	m	2016-08-31T13:23:18.41

TDMT - Time Domain Moment Tensor

Warning: the following TDMT solution has been computed starting from an event location obtained before the preferred one showned at the moment.

TDMT details

Field	Value
Magnitude	3.3
Scalar Moment	1.18508E+21 dyne-cm
Computed depth	6 km
Quality	Aa
Variance Reduction	51.49%
Double Couple	95%
CLVD	5%
ISO	0%
Model used	CIA
Mode	manual
Status	reviewed

Moment Tensor Components

Component	Value
Mrr	-6.491E+20
Mtt	3.168E+20
Mpp	3.323E+20
Mrt	-1.499E+20
Mrp	8.626E+20
Mtp	-5.679E+20

Nodal Planes

Name	Strike	Dip	Rake
PN1	161	71	-67
PN2	288	29	-140

Fault Plane solution

psmeca (GMT documentation)

13.236 42.7577 6 161 71 -67 288 29 -140 1.18508 21 13.736 43.2577

TDMT references

More info and references

PDF Solution

Download TDMT soution in PDF format

Station Distribution

TDMT station details

Station	Epicentral Distance (km)	Epicentral Azimuth	Variance Reduction	zcor
OFFI	41.7	61.7	57.69%	98
TERO	33.7	116.3	59.16%	94
GUAR	107.2	176.6	67.5%	103
RDP	119	201.6	41.36%	103
TOLF	127.6	233.3	2.8%	105
SACS	109	275.8	59.43%	103
PARC	127.9	321	16.86%	105
FDMO	33.3	338.6	62.85%	94
CING	68.7	357.3	53.43%	98
FIAM	55.3	190.2	52.08%	97
SNTG	60.3	336.5	32.23%	98
MTCE	91.2	206.6	60.27%	101
MGAB	93.5	281	67.3%	101
FAGN	61.7	152.3	43.66%	98
VVLD	103.7	161.9	39.92%	103
POFI	122	161.1	54.66%	105

Fault Plane solutions in the area

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, /tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols 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 miniseed + resp format	Download

Earthquake with magnitude of Mw 3.3 on date 31-08-2016 and time 13:23:04 (UTC) in region 6 km W Arquata del Tronto (AP)