Earthquake with magnitude of Mw 3.9 on date 21-08-2017 and time 20:57:51 (Italy) in region 1 km SW Casamicciola Terme (NA)

A magnitude Mw 3.9 earthquake occured in region: 1 km SW Casamicciola Terme (NA), on

  • 21-08-2017 18:57:51 (UTC)
  • 21-08-2017 20:57:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.738, 13.898 at 2 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Casamicciola Terme NA 1 8362 8362
Lacco Ameno NA 2 4853 13215
Serrara Fontana NA 3 3173 16388
Forio NA 3 17615 34003
Barano d'Ischia NA 3 10113 44116
Ischia NA 4 19915 64031
Procida NA 11 10530 74561
Monte di Procida NA 15 12886 87447
Bacoli NA 17 26560 114007

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km SW of Pozzuoli (81661 inhabitants)
31 Km SW of Marano di Napoli (59874 inhabitants)
32 Km W of Napoli (974074 inhabitants)
33 Km SW of Giugliano in Campania (122974 inhabitants)
37 Km SW of Aversa (53047 inhabitants)
38 Km SW of Casoria (77642 inhabitants)
39 Km W of Ercolano (53709 inhabitants)
40 Km W of Portici (55274 inhabitants)
40 Km W of Torre del Greco (86275 inhabitants)
40 Km SW of Afragola (65057 inhabitants)
46 Km SW of Acerra (59573 inhabitants)
49 Km W of Castellammare di Stabia (66466 inhabitants)
52 Km SW of Caserta (76326 inhabitants)
53 Km W of Scafati (50787 inhabitants)
68 Km W of Cava de' Tirreni (53659 inhabitants)
73 Km W of Salerno (135261 inhabitants)
78 Km W of Avellino (54857 inhabitants)
86 Km SW of Benevento (60091 inhabitants)
93 Km W of Battipaglia (50786 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

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

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

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.
Significant earthquakes since 1000 AD until 2006

Significant earthquakes since 1000 AD until 2006 *

This map shows the epicenters of the historical earthquakes catalogue CPT11 (Catalogo Parametrico dei Terremoti Italiani, 2011 version) with estimated magnitude ≥ 5.0 since 1000 AD until 2006. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
Seismic hazard
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

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

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

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

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 3.6 2017-08-21
18:57:51
40.7383 13.8977 2 2017-12-05
11:13:27
Bollettino Sismico Italiano INGV 49268411
Reviewed Evaluation Mw
Rev501
Mw 3.9 2017-08-21
18:57:51
40.739 13.903 3 2017-10-17
14:08:40
TDMT-INGV Revised 51070861
Reviewed
Rev200
Md 4.0 2017-08-21
18:57:51
40.739 13.903 2 2017-08-29
12:19:17
Sala Operativa INGV-OV (Napoli) 49478641
Reviewed
Rev200
Md 4.0 2017-08-21
18:57:51
40.739 13.903 2 2017-08-25
12:51:54
Sala Operativa INGV-OV (Napoli) 49355471
Reviewed
Rev200
Md 4.0 2017-08-21
18:57:51
40.783 13.883 5 2017-08-21
22:16:47
Sala Operativa INGV-OV (Napoli) 49256941
Reviewed
Rev100
ML 3.6 2017-08-21
18:57:51
40.7127 13.8413 10 2017-08-21
19:23:06
Sala Sismica INGV-Roma 49252001
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-08-21 18:57:51 ± 0.02
Latitude 40.7383 ± 0.0018
Longitude 13.8977 ± 0.0024
Depth (km) 2 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 49268411

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 220
Semi-minor axis of confidence ellipse (meter) 110
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 316
Circular confidence region, given by single value of horizontal uncertainty (meter) 220
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 83
Number of associated phases, regardless of their use for origin computation 102
Number of defining phases 102
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.04
Epicentral distance of station closest to the epicenter (degree) 0.00809
Epicentral distance of station farthest from the epicenter (degree) 3.67013
Number of stations at which the event was observed 101
Number of stations from which data was used for origin computation 101
Magnitudes information

Mw:3.9

Field Value
Value 3.9
Uncertainty
Num. used stations
Type of magnitude Mw
Reference to an origin 51070861
Agency INGV
Autore TDMT-INGV Revised
Time of creation (UTC) 2017-10-17 14:08:40

ML:3.6

Field Value
Value 3.6
Uncertainty 0.2
Num. used stations 121
Type of magnitude ML
Reference to an origin 49268411
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-11-30 14:42:36

ML:3.6

Field Value
Value 3.6
Uncertainty 0.2
Num. used stations 129
Type of magnitude ML
Reference to an origin 49252001
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-08-21 19:23:05

Md:4

Field Value
Value 4
Uncertainty 0
Num. used stations
Type of magnitude Md
Reference to an origin 49256941
Agency INGV
Autore Sala Operativa INGV-OV (Napoli)
Time of creation (UTC) 2017-08-21 22:16:47

Md:4

Field Value
Value 4
Uncertainty 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 49478641
Agency INGV
Autore Sala Operativa INGV-OV (Napoli)
Time of creation (UTC) 2017-08-29 12:19:17

Md:4

Field Value
Value 4
Uncertainty 0
Num. used stations
Type of magnitude Md
Reference to an origin 49355471
Agency INGV
Autore Sala Operativa INGV-OV (Napoli)
Time of creation (UTC) 2017-08-25 12:51:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
MN.VSL.HHN. 2017-08-21T18:58:46.40 0.3 undecidable manual P 252 3.6701 31 -2.45 0
IV.AGLI.HHZ. 2017-08-21T18:58:45.90 0.3 undecidable manual P 278 3.5874 31 -1.83 0
IV.SOI.EHN. 2017-08-21T18:58:44.25 0.6 undecidable manual P 147 3.1413 31 2.57 0
IV.DGI.HHZ. 2017-08-21T18:58:40.44 0.3 undecidable manual P 264 3.2861 31 -3.2 0
IV.PLAC.HHE. 2017-08-21T18:58:40.03 0.3 undecidable manual P 139 3.01 31 0.13 0
IV.LADO.EHE. 2017-08-21T18:58:38.16 0.3 undecidable manual P 121 2.7708 31 1.5 0
MN.TIP.HHN. 2017-08-21T18:58:36.30 0.3 undecidable manual P 125 2.689 31 0.76 0
IV.SERS.HNN. 2017-08-21T18:58:35.89 0.3 undecidable manual P 128 2.7339 31 -0.26 0
IV.PIPA.HHZ. 2017-08-21T18:58:34.69 0.3 undecidable manual P 118 2.5577 31 0.92 0
IV.JOPP.HNN. 2017-08-21T18:58:33.15 0.3 undecidable manual P 144 2.6224 31 -1.49 0
IV.CSP1.EHZ. 2017-08-21T18:58:32.26 0.3 undecidable manual P 348 2.4075 31 0.53 0
IV.CELI.HHZ. 2017-08-21T18:58:30.77 0.3 undecidable manual P 123 2.4021 31 -0.88 0
IV.NOCI.HHN. 2017-08-21T18:58:30.50 0.3 undecidable manual P 88 2.3976 31 -1.09 0
IV.CAR1.HHN. 2017-08-21T18:58:29.30 0.6 undecidable manual P 129 2.3113 31 -1.12 0
IV.TDS.HHZ. 2017-08-21T18:58:28.50 0.3 undecidable manual P 119 2.1521 31 0.24 0
GE.MATE.HHN. 2017-08-21T18:58:27.23 0.3 undecidable manual P 91 2.1287 31 -0.72 0
IV.CRAC.EHN. 2017-08-21T18:58:27.45 0.6 undecidable manual P 100 1.9596 31 1.8 0
IV.SALB.HHZ. 2017-08-21T18:58:26.83 0.3 undecidable manual P 114 2.055 31 -0.12 0
IV.AMUR.HHZ. 2017-08-21T18:58:26.16 0.3 undecidable manual P 84 2.0541 31 -0.77 0
IV.CET2.HHZ. 2017-08-21T18:58:24.79 0.3 undecidable manual P 127 1.983 31 -1.18 0
IV.MMN.HHZ. 2017-08-21T18:58:23.59 0.3 positive manual P 117 1.8058 31 0.03 0
IV.TOLF.HHN. 2017-08-21T18:58:23.53 0.3 undecidable manual P 314 1.9434 31 -1.91 0
IV.RM33.HNE. 2017-08-21T18:58:23.32 0.3 undecidable manual P 344 1.8418 31 -0.73 0
IV.CAMP.HHE. 2017-08-21T18:58:23.23 0.3 undecidable manual P 349 1.8328 31 -0.71 0
IV.GIGS.HHN. 2017-08-21T18:58:22.85 0.6 undecidable manual P 352 1.7312 31 0.3 0
IV.VCEL.EHN. 2017-08-21T18:58:21.11 0.6 undecidable manual P 359 1.6557 31 -0.42 0
IV.MRVN.HHZ. 2017-08-21T18:58:21.72 0.3 undecidable manual P 79 1.7654 31 -1.3 0
IV.FIAM.HNN. 2017-08-21T18:58:20.32 0.3 undecidable manual P 339 1.6368 31 -0.95 0
IV.SGRT.HHZ. 2017-08-21T18:58:20.87 0.3 undecidable manual P 53 1.7195 31 -1.53 0
IV.PALZ.HHZ. 2017-08-21T18:58:19.81 0.3 undecidable manual P 82 1.5729 35 -0.55 0
MN.CUC.HHE. 2017-08-21T18:58:19.68 0.3 undecidable manual P 116 1.6386 31 -1.63 0
IV.SIRI.HNE. 2017-08-21T18:58:19.51 0.3 undecidable manual P 110 1.5981 35 -1.22 0
IV.ACER.HHZ. 2017-08-21T18:58:19.23 0.3 undecidable manual P 88 1.5486 35 -0.77 0
IV.APRC.HHN. 2017-08-21T18:58:19.94 0.3 undecidable manual P 50 1.6017 35 -0.85 0
IV.MCEL.HHZ. 2017-08-21T18:58:18.09 0.6 undecidable manual P 105 1.5046 35 -1.24 0
IV.MTSN.HHZ. 2017-08-21T18:58:18.06 0.3 undecidable manual P 108 1.4857 35 -0.99 0
BA.PZUN.HNZ. 2017-08-21T18:58:18.87 0.3 undecidable manual P 93 1.4497 35 0.35 0
IV.T0110.HHZ. 2017-08-21T18:58:17.90 0.3 undecidable manual P 357 1.4929 35 -1.26 0
IV.MTCE.HHZ. 2017-08-21T18:58:17.57 0.6 undecidable manual P 326 1.5486 35 -2.43 0
IV.MGR.HHZ. 2017-08-21T18:58:16.24 0.3 undecidable manual P 115 1.3957 35 -1.47 0
IV.SLCN.HNZ. 2017-08-21T18:58:16.99 0.3 undecidable manual P 104 1.3625 35 -0.23 0
IV.CERT.HHZ. 2017-08-21T18:58:15.37 0.1 negative manual P 331 1.3913 35 -2.28 0
IV.BULG.HHN. 2017-08-21T18:58:15.69 0.6 undecidable manual P 120 1.3049 35 -0.68 0
IV.RDP.HHZ. 2017-08-21T18:58:15.00 0.3 undecidable manual P 319 1.3562 35 -2.12 0
IV.MELA.HHZ. 2017-08-21T18:58:15.57 0.6 undecidable manual P 43 1.3373 35 -1.27 0
IV.VULT.HHN. 2017-08-21T18:58:15.73 0.3 undecidable manual P 80 1.3175 35 -0.81 0
IV.RMP.HHN. 2017-08-21T18:58:15.69 0.6 undecidable manual P 320 1.3984 35 -2.07 0
IV.INTR.HHZ. 2017-08-21T18:58:14.09 0.1 negative manual P 0 1.2725 35 -1.78 0
IV.VIVA.HHN. 2017-08-21T18:58:14.69 0.6 undecidable manual P 320 1.3193 35 -1.88 0
IV.RCAV.EHZ. 2017-08-21T18:58:14.58 0.6 undecidable manual P 327 1.3193 35 -1.99 0
IV.SGTA.HHZ. 2017-08-21T18:58:13.97 0.1 negative manual P 70 1.1763 35 -0.47 0
IV.TRIV.HHZ. 2017-08-21T18:58:13.44 0.1 negative manual P 25 1.1385 35 -0.44 0
IV.MOCO.HNE. 2017-08-21T18:58:13.58 0.3 undecidable manual P 56 1.1403 35 -0.32 0
IV.CIGN.HHN. 2017-08-21T18:58:13.85 1.0 undecidable manual P 39 1.188 35 -0.76 0
IV.GUAR.HHN. 2017-08-21T18:58:12.10 0.1 negative manual P 338 1.143 35 -1.85 0
IV.BIOG.HHZ. 2017-08-21T18:58:12.75 0.3 undecidable manual P 63 1.0396 35 0.35 0
IV.CMPR.HHZ. 2017-08-21T18:58:12.14 0.3 undecidable manual P 111 1.1475 35 -1.86 0
IV.GATE.HNN. 2017-08-21T18:58:12.90 0.1 negative manual P 44 1.0864 35 -0.2 0
IV.VVLD.HHZ. 2017-08-21T18:58:12.39 0.1 negative manual P 350 1.1493 35 -1.64 0
IX.RSF3.HHZ.02 2017-08-21T18:58:11.43 0.3 positive manual P 76 0.992 43 -0.26 0
IV.CAFE.HHZ. 2017-08-21T18:58:11.71 0.1 negative manual P 74 1.0522 35 -0.88 0
IV.CDRU.HHE. 2017-08-21T18:58:11.55 0.3 undecidable manual P 103 1.0963 35 -1.69 0
IV.RNI2.HHZ. 2017-08-21T18:58:10.38 0.1 negative manual P 11 0.983 43 -1.14 0
IV.POFI.HHZ. 2017-08-21T18:58:10.33 0.1 negative manual P 352 0.9884 43 -1.29 0
IV.BSSO.HHZ. 2017-08-21T18:58:10.52 0.1 negative manual P 33 0.9623 43 -0.63 0
IV.SNAL.HHZ. 2017-08-21T18:58:10.82 0.1 negative manual P 79 1.009 35 -1.12 0
IV.LATB.EHZ. 2017-08-21T18:58:09.52 0.3 undecidable manual P 317 1.0324 35 -2.77 0
IV.SACR.HHZ. 2017-08-21T18:58:09.36 0.1 negative manual P 42 0.8966 43 -0.62 0
IV.MCRV.HHN. 2017-08-21T18:58:09.76 0.3 undecidable manual P 87 0.9632 43 -1.41 0
IV.MRB1.HHZ. 2017-08-21T18:58:09.32 0.3 undecidable manual P 64 0.8948 43 -0.62 0
IV.MIDA.HHZ. 2017-08-21T18:58:09.79 0.1 negative manual P 16 0.9416 43 -1 0
IV.CERA.HHZ. 2017-08-21T18:58:08.40 0.1 negative manual P 6 0.8633 43 -0.99 0
IV.PSB1.HHZ. 2017-08-21T18:58:08.21 0.1 negative manual P 55 0.8427 43 -0.79 0
IV.LRP.EHZ. 2017-08-21T18:58:08.48 0.3 undecidable manual P 346 0.938 43 -2.24 0
IV.MTMR.EHZ. 2017-08-21T18:58:07.94 0.1 undecidable manual P 77 0.8544 43 -1.29 0
IV.MCI.EHZ. 2017-08-21T18:58:06.29 0.3 undecidable manual P 355 0.7545 43 -1.14 0
IV.LIK.EHZ.01 2017-08-21T18:58:06.70 0.3 undecidable manual P 342 0.8022 43 -1.58 0
IV.SGG.HHZ. 2017-08-21T18:58:06.41 0.1 negative manual P 29 0.7428 43 -0.81 0
IV.VITU.HHZ. 2017-08-21T18:58:05.61 0.3 undecidable manual P 51 0.7096 43 -1.01 0
IV.VAGA.HHZ. 2017-08-21T18:58:05.97 0.1 negative manual P 20 0.7222 43 -0.88 0
IV.PAOL.HHZ. 2017-08-21T18:58:03.37 0.1 negative manual P 60 0.5846 49 -0.99 0
IV.PIGN.HHZ. 2017-08-21T18:58:01.74 0.1 negative manual P 25 0.5081 49 -1.1 0
IV.VVDG.HHE. 2017-08-21T18:58:00.26 0.3 undecidable manual P 76 0.4101 49 -0.63 0
IV.VCRE.HHZ. 2017-08-21T18:58:00.35 0.3 undecidable manual P 79 0.4119 49 -0.58 0
IV.OVO.HHZ. 2017-08-21T18:58:00.07 0.1 negative manual P 77 0.3876 49 -0.38 0
IV.VBKN.HHN. 2017-08-21T18:58:00.39 0.3 undecidable manual P 77 0.4128 49 -0.56 0
IV.CRTO.HHE. 2017-08-21T18:58:00.28 0.6 undecidable manual P 78 0.4056 49 -0.52 0
IV.MODR.HHZ. 2017-08-21T18:58:00.08 0.1 negative manual P 358 0.4074 49 -0.76 0
IV.VTIR.HHZ. 2017-08-21T18:58:00.45 0.3 undecidable manual P 80 0.4038 49 -0.32 0
IV.VENT.EHZ. 2017-08-21T18:57:59.04 0.1 negative manual P 279 0.3651 49 -0.95 0
IV.CMSN.HHZ. 2017-08-21T18:57:57.75 0.1 negative manual P 65 0.2374 49 0.29 11
IV.CSOB.HHZ. 2017-08-21T18:57:57.04 0.1 negative manual P 64 0.2068 49 0.18 41
IV.CPIS.HHZ. 2017-08-21T18:57:57.19 0.3 undecidable manual P 64 0.2095 49 0.28 28
IV.CSFT.HHZ. 2017-08-21T18:57:57.04 0.1 negative manual P 64 0.2041 49 0.23 43
IV.CAFL.HHZ. 2017-08-21T18:57:56.42 0.1 negative manual P 55 0.1817 49 0.06 70
IV.COLB.HHZ. 2017-08-21T18:57:56.92 0.1 negative manual P 67 0.205 49 0.09 44
IV.CPOZ.HHZ. 2017-08-21T18:57:56.59 0.1 negative manual P 64 0.1862 49 0.14 65
IV.CFMN.HHZ. 2017-08-21T18:57:56.32 0.1 negative manual P 57 0.1754 49 0.08 77
IV.IFOR.HHZ. 2017-08-21T18:57:53.19 0.1 positive manual P 230 0.0423 97 -0.1 100
IV.ICAI.EHZ. 2017-08-21T18:57:53.35 0.1 positive manual P 98 0.0522 96 -0.19 95
IV.IOCA.HHZ. 2017-08-21T18:57:52.28 0.1 undecidable manual P 18 0.0081 136 -0.17 96
IV.IOCA.HHZ. 2017-08-21T18:57:52.80 0.3 undecidable manual S 18 0.0081 136 -0.17 72
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MODR.HHN. ML:3.5 0.0100126815 0.3328 AML other m 2017-08-21T18:58:08.86
IV.VENT.EHE. ML:3.3 0.0078845545 0.9344 AML other m 2017-08-21T18:58:09.77
IV.MODR.HHE. ML:3.4 0.0080575625 1.1136 AML other m 2017-08-21T18:58:10.46
IV.VENT.EHN. ML:3.2 0.005777483 0.5248 AML other m 2017-08-21T18:58:14.60
IV.VTIR.HHN. ML:3.1 0.0036029555 0.6016 AML other m 2017-08-21T18:58:16.42
IV.PIGN.HNN. ML:3.3 0.0050948325 0.6272 AML other m 2017-08-21T18:58:19.66
IV.PIGN.HHN. ML:3.3 0.0052683915 0.6528 AML other m 2017-08-21T18:58:19.66
IV.VTIR.HHE. ML:3.1 0.0040964625 0.8704 AML other m 2017-08-21T18:58:19.83
IV.PAOL.HHN. ML:3.5 0.0065385405 1.0112 AML other m 2017-08-21T18:58:20.48
IV.PAOL.HNN. ML:3.5 0.0061919445 0.9984 AML other m 2017-08-21T18:58:20.49
IV.PIGN.HNE. ML:3.4 0.0063860105 0.6912 AML other m 2017-08-21T18:58:20.63
IV.PIGN.HHE. ML:3.4 0.00589 0.7 AML other m 2017-08-21T18:58:20.64
IV.VITU.HNN. ML:3.9 0.0106677125 0.8192 AML other m 2017-08-21T18:58:22.05
IV.VITU.HHN. ML:3.9 0.01099144 0.8192 AML other m 2017-08-21T18:58:22.05
IV.PAOL.HHE. ML:3.3 0.0039967665 0.9472 AML other m 2017-08-21T18:58:22.12
IV.PAOL.HNE. ML:3.3 0.0038654685 0.9344 AML other m 2017-08-21T18:58:22.12
IV.VITU.HNE. ML:3.2 0.0021176625 1.0752 AML other m 2017-08-21T18:58:22.28
IV.MCI.EHE. ML:3.6 0.005858304 0.64 AML other m 2017-08-21T18:58:23.43
IV.MCI.EHN. ML:3.7 0.0067800375 0.9216 AML other m 2017-08-21T18:58:23.51
IV.VAGA.HNN. ML:3.8 0.008110363 0.96 AML other m 2017-08-21T18:58:24.51
IV.VAGA.HHN. ML:3.8 0.0084623775 0.96 AML other m 2017-08-21T18:58:24.51
IV.VITU.HHE. ML:3.6 0.0057527575 0.7168 AML other m 2017-08-21T18:58:26.68
IV.SGG.HNE. ML:0 1.7407775E-8 0.768 AML other m 2017-08-21T18:58:27.40
IV.SGG.HHE. ML:3.6 0.005577051 0.7424 AML other m 2017-08-21T18:58:27.39
IV.VAGA.HHE. ML:3.6 0.0061557785 1.216 AML other m 2017-08-21T18:58:27.94
IV.VAGA.HNE. ML:3.6 0.0059518655 1.216 AML other m 2017-08-21T18:58:27.95
IV.LIK.EHE.01 ML:4 0.01094136 0.9216 AML other m 2017-08-21T18:58:28.01
IV.PSB1.HHN. ML:3.6 0.00467625 1.8304 AML other m 2017-08-21T18:58:28.51
IV.PSB1.HNN. ML:3.6 0.0045687145 1.8432 AML other m 2017-08-21T18:58:28.51
IV.LIK.EHN.01 ML:4.1 0.014181685 0.9216 AML other m 2017-08-21T18:58:28.60
IV.MTMR.HNN. ML:3.5 0.003474249 1.0624 AML other m 2017-08-21T18:58:29.08
IV.MTMR.EHN. ML:3.8 0.0069911505 1.0624 AML other m 2017-08-21T18:58:29.08
IV.SACR.HNN. ML:3.6 0.0038582445 2.0608 AML other m 2017-08-21T18:58:30.88
IV.MRB1.HHN. ML:3.8 0.0069901145 0.7424 AML other m 2017-08-21T18:58:29.90
IV.SGG.HNN. ML:0 1.44324585E-8 0.64 AML other m 2017-08-21T18:58:31.28
IV.MTMR.HNE. ML:3.6 0.0044077765 1.088 AML other m 2017-08-21T18:58:30.69
IV.MTMR.EHE. ML:3.9 0.008874795 1.1008 AML other m 2017-08-21T18:58:30.68
IV.SGG.HHN. ML:3.6 0.004852941 0.6144 AML other m 2017-08-21T18:58:31.28
IV.CERA.HHE. ML:3.9 0.0082585315 0.9472 AML other m 2017-08-21T18:58:31.16
IV.CERA.HNE. ML:3.8 0.0079570895 0.9472 AML other m 2017-08-21T18:58:31.16
IV.MRB1.HNN. ML:3.8 0.0066751895 0.9472 AML other m 2017-08-21T18:58:32.54
IV.LRP.EHE. ML:3.3 0.0020099065 0.8576 AML other m 2017-08-21T18:58:33.18
IV.LATB.EHN. ML:2.8 0.00047617625 1.7152 AML other m 2017-08-21T18:58:33.49
IV.SACR.HNE. ML:3.6 0.003923042 1.3952 AML other m 2017-08-21T18:58:35.06
IV.CAFE.HNN. ML:3.5 0.002468242 1.2928 AML other m 2017-08-21T18:58:34.98
IV.CAFE.HHN. ML:3.5 0.0025655605 1.344 AML other m 2017-08-21T18:58:34.98
IV.SACR.HHN. ML:3.6 0.004092524 1.4976 AML other m 2017-08-21T18:58:35.08
IV.POFI.HNE. ML:3.5 0.002541019 1.7536 AML other m 2017-08-21T18:58:35.06
IV.PSB1.HHE. ML:3.7 0.0050971755 1.8304 AML other m 2017-08-21T18:58:36.23
IV.PSB1.HNE. ML:3.6 0.004945161 1.856 AML other m 2017-08-21T18:58:36.22
IV.MIDA.HHN. ML:3.5 0.0030017525 1.0112 AML other m 2017-08-21T18:58:37.83
IV.GIUL.HHN. ML:0 0.002348807 1.0624 AML other m 2017-08-21T18:58:37.84
IV.BSSO.HHN. ML:3.4 0.0022253825 2.048 AML other m 2017-08-21T18:58:38.11
IV.BSSO.HNN. ML:3.8 0.0055797445 2.0736 AML other m 2017-08-21T18:58:38.12
IV.SGTA.HHE. ML:3.4 0.0016275395 0.8576 AML other m 2017-08-21T18:58:38.12
IV.SGTA.HNE. ML:3.4 0.001608689 0.8576 AML other m 2017-08-21T18:58:38.14
IV.CERA.HHN. ML:3.7 0.0059467535 0.9088 AML other m 2017-08-21T18:58:37.80
IV.CERA.HNN. ML:3.7 0.0056689445 0.896 AML other m 2017-08-21T18:58:37.82
IV.LRP.EHN. ML:3.5 0.003046427 1.2288 AML other m 2017-08-21T18:58:38.94
IV.MRB1.HNE. ML:3.9 0.008095536 1.6896 AML other m 2017-08-21T18:58:39.10
IV.AMUR.HHE. ML:3.2 0.0003428711 1.3824 AML other m 2017-08-21T18:58:40.02
IV.GIUL.HHE. ML:0 0.0029249535 0.9216 AML other m 2017-08-21T18:58:40.58
IV.VVLD.HHE. ML:3.5 0.0021010795 1.0112 AML other m 2017-08-21T18:58:41.00
IV.VVLD.HHN. ML:3.5 0.002344937 0.8704 AML other m 2017-08-21T18:58:42.12
IV.TRIV.HHN. ML:3.6 0.002612804 1.1776 AML other m 2017-08-21T18:58:41.73
IV.TRIV.HNN. ML:3.5 0.0024121175 1.1776 AML other m 2017-08-21T18:58:41.74
IV.SACR.HHE. ML:3.6 0.004040611 1.4848 AML other m 2017-08-21T18:58:42.95
IV.LATB.EHE. ML:3 0.00084367285 1.5232 AML other m 2017-08-21T18:58:43.11
IV.MELA.HHN. ML:3.6 0.0022365085 0.832 AML other m 2017-08-21T18:58:43.80
IV.MELA.HNN. ML:3.6 0.002160182 0.8448 AML other m 2017-08-21T18:58:43.81
IV.CERT.HHN. ML:3.2 0.0007404119 0.9984 AML other m 2017-08-21T18:58:44.77
IV.MRB1.HHE. ML:3.9 0.0085229165 1.0496 AML other m 2017-08-21T18:58:45.06
IV.POFI.HHE. ML:3.5 0.003010108 2.6496 AML other m 2017-08-21T18:58:46.81
IV.POFI.HHN. ML:3.5 0.0029386065 2.1376 AML other m 2017-08-21T18:58:46.60
IV.POFI.HNN. ML:3.6 0.0030530315 2.1632 AML other m 2017-08-21T18:58:45.55
IV.MIDA.HHE. ML:3.7 0.004453579 1.1776 AML other m 2017-08-21T18:58:46.00
IV.MIDA.HNE. ML:3.6 0.004092722 1.1776 AML other m 2017-08-21T18:58:46.00
IV.MIDA.HNN. ML:3.5 0.0030728615 1.5616 AML other m 2017-08-21T18:58:46.68
IV.RNI2.HNE. ML:3.6 0.0036748135 1.344 AML other m 2017-08-21T18:58:47.67
IV.RNI2.HHE. ML:3.6 0.003810059 1.344 AML other m 2017-08-21T18:58:47.67
IV.INTR.HHN. ML:3.8 0.0039984545 0.9344 AML other m 2017-08-21T18:58:46.60
IV.INTR.HNN. ML:0.9 2.675182E-6 0.96 AML other m 2017-08-21T18:58:46.60
IV.SNAL.HHN. ML:4.2 0.01217915 1.6384 AML other m 2017-08-21T18:58:47.74
IV.SNAL.HNN. ML:4.1 0.011809675 1.6384 AML other m 2017-08-21T18:58:47.75
IV.SGTA.HNN. ML:3.5 0.0019802295 1.1392 AML other m 2017-08-21T18:58:48.36
IV.SGTA.HHN. ML:3.5 0.001958474 1.2032 AML other m 2017-08-21T18:58:48.36
IV.RNI2.HHN. ML:3.7 0.0043061125 2.4448 AML other m 2017-08-21T18:58:49.75
IV.RNI2.HNN. ML:3.7 0.004182008 2.432 AML other m 2017-08-21T18:58:49.76
IV.MELA.HHE. ML:3.7 0.002508687 0.8448 AML other m 2017-08-21T18:58:48.67
IV.MELA.HNE. ML:3.7 0.002434685 0.8576 AML other m 2017-08-21T18:58:48.68
IV.BSSO.HHE. ML:3.4 0.0020075665 1.2032 AML other m 2017-08-21T18:58:48.11
IV.BSSO.HNE. ML:3.7 0.0047869395 1.216 AML other m 2017-08-21T18:58:48.13
IV.TRIV.HNE. ML:3.6 0.0025570275 2.0992 AML other m 2017-08-21T18:58:48.97
IV.TRIV.HHE. ML:3.6 0.002605326 2.0992 AML other m 2017-08-21T18:58:48.97
IV.CERT.HHE. ML:3.5 0.00142134985 1.0368 AML other m 2017-08-21T18:58:49.79
IV.CAFE.HHE. ML:3.6 0.002901896 1.5744 AML other m 2017-08-21T18:58:50.18
IV.CAFE.HNE. ML:3.6 0.0028352455 1.728 AML other m 2017-08-21T18:58:50.18
IV.SNAL.HHE. ML:4 0.0084970785 1.6896 AML other m 2017-08-21T18:58:50.34
IV.SNAL.HNE. ML:4 0.007942703 1.7024 AML other m 2017-08-21T18:58:50.36
IV.MTSN.HHN. ML:3.5 0.0013752945 1.088 AML other m 2017-08-21T18:58:51.41
IV.MCEL.HHN. ML:3.6 0.00161 0.64 AML other m 2017-08-21T18:58:55.52
IV.MCEL.HNN. ML:3.6 0.001555 0.66 AML other m 2017-08-21T18:58:55.53
IV.ACER.HNN. ML:3.5 0.0013965165 1.1264 AML other m 2017-08-21T18:58:55.90
IV.ACER.HHN. ML:3.6 0.0015213065 1.1008 AML other m 2017-08-21T18:58:55.90
IV.INTR.HNE. ML:0 1.8729095E-6 1.4976 AML other m 2017-08-21T18:58:56.86
IV.INTR.HHE. ML:3.5 0.001901249 1.5104 AML other m 2017-08-21T18:58:56.86
IV.MCEL.HHE. ML:3.4 0.0011809536 1.6 AML other m 2017-08-21T18:58:56.61
IV.MCEL.HNE. ML:3.4 0.0011716589 1.6 AML other m 2017-08-21T18:58:56.61
IV.SGRT.HHN. ML:3.4 0.00094097965 1.1392 AML other m 2017-08-21T18:58:59.41
IV.T0110.HHN. ML:3.7 0.001952983 1.3568 AML other m 2017-08-21T18:58:59.50
IV.SGRT.HHE. ML:3.5 0.00099921975 1.28 AML other m 2017-08-21T18:59:00.20
IV.MMN.HHN. ML:3.4 0.0008473048 0.8576 AML other m 2017-08-21T18:59:00.90
IV.T0110.HHE. ML:3.6 0.0016930985 1.8048 AML other m 2017-08-21T18:59:02.04
IV.CET2.HHN. ML:4.1 0.002958364 0.9216 AML other m 2017-08-21T18:59:01.43
IV.CET2.HHE. ML:4 0.002471982 0.96 AML other m 2017-08-21T18:59:02.41
IV.ACER.HHE. ML:3.6 0.0014652055 2.1248 AML other m 2017-08-21T18:59:03.21
IV.ACER.HNE. ML:3.5 0.0013989685 2.0864 AML other m 2017-08-21T18:59:03.21
IV.MTSN.HHE. ML:3.5 0.0014692025 1.4336 AML other m 2017-08-21T18:59:04.51
IV.PALZ.HHE. ML:3.9 0.003248044 1.6768 AML other m 2017-08-21T18:59:06.31
IV.PALZ.HHN. ML:3.9 0.0033573265 2.24 AML other m 2017-08-21T18:59:11.70
IV.MMN.HHE. ML:3.1 0.00040962955 0.96 AML other m 2017-08-21T18:59:12.69
IV.CELI.HHE. ML:4 0.0016889275 1.2672 AML other m 2017-08-21T18:59:16.02
IV.CELI.HNE. ML:3.6 0.0006793132 1.2672 AML other m 2017-08-21T18:59:15.39
IV.AMUR.HHN. ML:3.4 0.000558385 1.3952 AML other m 2017-08-21T18:59:22.05
IV.CELI.HNN. ML:3.5 0.00047908675 1.2288 AML other m 2017-08-21T18:59:25.00
IV.CELI.HHN. ML:3.8 0.00118100165 1.216 AML other m 2017-08-21T18:59:25.02
TDMT - Time Domain Moment Tensor

TDMT details

Field Value
Magnitude3.9
Scalar Moment7.32466E+21 dyne-cm
Computed depth3 km
QualityCa
Variance Reduction18.07%
Double Couple88%
CLVD12%
ISO0%
Model usedCIA
Modemanual
Statusreviewed

Moment Tensor Components

Component Value
Mrr-2.9378E+21
Mtt-2.7482E+21
Mpp5.686E+21
Mrt-3.7904E+21
Mrp-5.009E+20
Mtp3.8624E+21

Nodal Planes

Name Strike Dip Rake
PN15971-39
PN216354-156

Fault Plane solution

Focal Mechanism

psmeca (GMT documentation)

13.903 40.739 3 59 71 -39 163 54 -156 7.32466 21 14.403 41.239

TDMT references

More info and references

Station Distribution

Station Distribution

TDMT station details

Sta Dist Azi V R zcor
MODR 45.2 357.3 27.41% 106
MOCO 126.7 56 30.75% 126
PIGN 56.3 24.4 12.63% 97
VAGA 80.1 20.2 12.5% 100
RNI2 109.1 11 12.2% 114
LPEL 147.1 9.1 21.51% 120
CERA 95.9 5.8 14.57% 113
OVO 42.8 76.6 3.72% 99
PAOL 0 59.7 -5.06% 111
AQU 184.1 347.1 17.69% 111
POFI 109.8 351.7 9.56% 103
Fault Plane solutions in the area
Fault Plane solutions

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, http://terremoti.ingv.it/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