Earthquake with magnitude of Mw 4.0 on date 29-08-2015 and time 18:47:03 (UTC) in region Confine Italia Slovenia (SLOVENIA)

A magnitude Mw 4.0 earthquake occured in region: Confine Italia Slovenia (SLOVENIA), on

  • 29-08-2015 18:47:03 (UTC)
  • 29-08-2015 20:47:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.3140, 13.5890 at 6 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
Drenchia UD 16 115 115
Grimacco UD 17 342 457
Pulfero UD 18 962 1419
Savogna UD 18 411 1830
Taipana UD 20 636 2466

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km NE of Udine (99169 inhabitants)
75 Km N of Trieste (204420 inhabitants)
82 Km E of Pordenone (51229 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.
Earthquakes since 1000 AD until 2019

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

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

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
Reviewed Evaluation Mw
Rev501
Mw 4.0 2015-08-29
18:47:03
46.3092 13.5775 7 2015-09-22
11:10:13
TDMT-INGV Revised 21530861
Bulletin
Rev1000
ML 4.3 2015-08-29
18:47:03
46.314 13.5887 6 2015-09-08
12:20:30
Bollettino Sismico Italiano INGV 21174061
Reviewed
Rev100
ML 4.2 2015-08-29
18:47:03
46.3092 13.5775 7 2015-08-29
19:01:54
Sala Sismica INGV-Roma 21137401
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2015-08-29 18:47:03 ± 0.09
Latitude 46.3140 ± 0.0045
Longitude 13.5887 ± 0.0052
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 21174061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 429
Semi-minor axis of confidence ellipse (meter) 320
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 234
Circular confidence region, given by single value of horizontal uncertainty (meter) 430.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 66
Number of associated phases, regardless of their use for origin computation 79
Number of defining phases 79
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) 0.18706
Epicentral distance of station farthest from the epicenter (degree) 4.51639
Number of stations at which the event was observed 69
Number of stations from which data was used for origin computation 69
Magnitudes information

Mw:4.0

Field Value
Value 4.0
Uncertainty
Num. used stations
Type of magnitude Mw
Reference to an origin 21530861
Agency INGV
Autore TDMT-INGV Revised
Time of creation (UTC) 2015-09-22 11:10:13

ML:4.3

Field Value
Value 4.3
Uncertainty 0.3
Num. used stations 1
Type of magnitude ML
Reference to an origin 21174061
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-09-04 08:09:10

ML:4.2

Field Value
Value 4.2
Uncertainty 0.3
Num. used stations 86
Type of magnitude ML
Reference to an origin 21137401
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2015-08-29 19:01:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
CR.STON.BHZ. 2015-08-29T18:48:13.01 0.6 undecidable manual P 138 501.3204 38 -0.07 10
IV.LNSS.HHZ. 2015-08-29T18:48:01.98 0.6 undecidable manual P 186 413.9745 38 -0.23 11
IV.MOMA.HNZ. 2015-08-29T18:48:00.89 1.0 undecidable manual P 192 398.0016 38 0.67 5
IV.NRCA.HHZ. 2015-08-29T18:47:58.57 0.1 negative manual P 186 387.9228 38 -0.4 22
ST.DOSS.HHZ. 2015-08-29T18:47:57.50 0.6 undecidable manual S 256 190.7646 38 0.28 31
IV.ASSB.HHN. 2015-08-29T18:47:56.58 0.3 undecidable manual P 192 370.2516 38 -0.19 18
IV.CESI.HHE. 2015-08-29T18:47:56.58 0.1 negative manual P 189 371.0508 38 -0.29 23
IV.ATTE.HHN. 2015-08-29T18:47:55.48 0.1 negative manual P 196 359.0739 38 0.09 25
IV.FDMO.HHN. 2015-08-29T18:47:55.77 0.1 negative manual P 186 365.7561 38 -0.43 23
GU.MAIM.HHZ. 2015-08-29T18:47:55.37 0.6 undecidable manual P 223 360.0729 38 -0.14 12
IV.ATCC.EHZ. 2015-08-29T18:47:54.83 0.3 undecidable manual P 192 355.0779 38 -0.05 19
GU.CARD.HHZ. 2015-08-29T18:47:54.78 0.3 undecidable manual P 225 351.2817 38 0.37 18
IV.CAFI.HHZ. 2015-08-29T18:47:54.50 0.3 undecidable manual P 202 354.8781 38 -0.35 18
OE.ARSA.BHZ. 2015-08-29T18:47:54.50 0.6 undecidable manual S 54 179.9865 50 -0.38 32
IV.ATMI.HHZ. 2015-08-29T18:47:54.22 0.3 undecidable manual P 198 346.4865 38 0.4 17
IV.CSP1.EHE. 2015-08-29T18:47:54.91 0.1 negative manual P 185 358.6743 38 -0.43 23
IV.SNTG.HHZ. 2015-08-29T18:47:53.35 0.1 negative manual P 189 343.2009 38 -0.05 25
IV.ATFO.HHN. 2015-08-29T18:47:52.40 0.1 negative manual P 194 336.6075 38 -0.19 25
IV.FOSV.EHZ. 2015-08-29T18:47:52.97 0.1 negative manual P 191 341.2029 38 -0.19 25
IV.ATVO.HHN. 2015-08-29T18:47:52.79 0.1 negative manual P 196 338.2059 38 0 26
IV.EL6.EHZ. 2015-08-29T18:47:52.01 0.1 negative manual P 187 333.3108 38 -0.17 25
IV.SSP9.EHZ. 2015-08-29T18:47:51.66 0.3 undecidable manual P 201 324.7305 38 0.54 17
IV.ATPI.EHZ. 2015-08-29T18:47:51.82 0.1 negative manual P 197 331.0242 38 -0.07 25
IV.BADI.EHE. 2015-08-29T18:47:51.56 0.1 negative manual P 199 328.5267 38 -0.01 26
IV.CING.HHZ. 2015-08-29T18:47:51.18 0.1 negative manual P 186 327.4278 38 -0.26 25
IV.CRE.HHE. 2015-08-29T18:47:51.68 0.1 negative manual P 204 325.4298 38 0.49 23
IV.RUFI.EHZ. 2015-08-29T18:47:50.56 0.1 undecidable manual P 211 319.3359 38 0.13 25
IV.ARVD.HHZ. 2015-08-29T18:47:50.13 0.1 negative manual P 189 316.4499 38 0.05 26
IV.MTCR.EHZ. 2015-08-29T18:47:50.95 0.6 undecidable manual P 219 324.3309 38 -0.11 13
IV.PARC.HHZ. 2015-08-29T18:47:49.38 0.1 negative manual P 200 314.0523 38 -0.4 24
IV.ASQU.HHZ. 2015-08-29T18:47:49.68 0.1 negative manual P 207 312.8535 38 0.06 26
SL.BOJS.BHZ. 2015-08-29T18:47:48.60 0.6 undecidable manual S 124 156.7209 50 -0.06 38
IV.SEI.HHZ. 2015-08-29T18:47:48.74 1.0 undecidable manual P 216 305.361 38 0.05 7
IV.MPAG.EHZ. 2015-08-29T18:47:48.31 0.1 negative manual P 193 304.8615 38 -0.32 25
IV.PE3.EHZ. 2015-08-29T18:47:48.36 0.1 negative manual P 197 302.7636 38 -0.02 26
IV.SFI.EHZ. 2015-08-29T18:47:47.82 0.3 undecidable manual P 208 300.0774 38 -0.21 19
IV.FSSB.HHZ. 2015-08-29T18:47:47.48 0.1 negative manual P 193 297.5799 38 -0.26 26
IV.PESA.HHZ. 2015-08-29T18:47:44.47 0.1 negative manual P 193 269.6301 38 0.21 36
IV.SALO.HHZ. 2015-08-29T18:47:42.13 0.6 undecidable manual P 253 248.5623 38 0.51 20
IV.ROVR.HHZ. 2015-08-29T18:47:37.05 0.1 undecidable manual P 250 207.6366 38 0.51 53
SI.LUSI.HHZ. 2015-08-29T18:47:37.24 0.6 undecidable manual P 260 207.0372 38 0.78 24
ST.GAGG.HHE. 2015-08-29T18:47:36.72 0.6 undecidable manual P 264 203.5407 38 0.69 25
SL.KOGS.BHZ. 2015-08-29T18:47:36.01 0.3 undecidable manual P 85 204.24 38 -0.1 44
ST.DOSS.HHZ. 2015-08-29T18:47:35.12 0.3 undecidable manual P 256 190.7646 38 0.68 41
IV.ZOVE.HNZ. 2015-08-29T18:47:34.54 0.3 undecidable manual P 240 188.2671 38 0.42 45
IV.TEOL.HHZ. 2015-08-29T18:47:33.75 0.3 undecidable manual P 235 181.7847 38 0.43 47
SI.ROSI.HHE. 2015-08-29T18:47:33.05 0.6 undecidable manual P 293 179.2872 50 0.06 34
IV.APPI.EHZ. 2015-08-29T18:47:33.17 0.6 undecidable manual P 277 181.485 38 -0.11 34
OE.ARSA.BHZ. 2015-08-29T18:47:33.52 0.1 negative manual P 54 179.9865 50 0.44 63
SI.ABSI.HHE. 2015-08-29T18:47:33.96 0.3 undecidable manual P 286 179.0874 50 1 38
OE.WTTA.HHE. 2015-08-29T18:47:33.63 0.6 undecidable manual P 306 181.8846 38 0.3 32
SI.KOSI.HHN. 2015-08-29T18:47:31.57 0.6 undecidable manual P 276 169.9965 50 0.03 36
SI.BOSI.HHZ. 2015-08-29T18:47:31.43 0.6 undecidable manual P 277 174.7917 50 -0.86 28
NI.CIMO.HHZ. 2015-08-29T18:47:29.50 0.6 undecidable manual S 270 87.6456 50 -0.74 37
SL.BOJS.BHZ. 2015-08-29T18:47:29.94 0.3 undecidable manual P 124 156.7209 50 0.44 53
IV.CTI.HHN. 2015-08-29T18:47:28.83 0.6 undecidable manual P 259 151.8369 50 0.08 39
NI.CGRP.HHN. 2015-08-29T18:47:28.88 0.6 undecidable manual P 251 145.4433 50 1.12 28
IV.BRES.EHN. 2015-08-29T18:47:27.27 0.6 undecidable manual P 287 147.8409 50 -0.87 31
IV.ASOL.HNN. 2015-08-29T18:47:27.66 0.3 undecidable manual P 247 141.747 50 0.46 55
SL.LJU.BHZ. 2015-08-29T18:47:27.60 0.3 undecidable manual S 112 78.1662 50 -0.1 68
IV.VENL.HNN. 2015-08-29T18:47:26.03 0.6 undecidable manual P 224 136.6632 50 -0.38 38
SI.RISI.HHZ. 2015-08-29T18:47:26.47 0.6 undecidable manual P 302 134.7651 50 0.34 38
IV.CRND.HNN. 2015-08-29T18:47:26.32 0.6 undecidable manual P 247 132.3675 50 0.58 36
NI.VARN.HHZ. 2015-08-29T18:47:23.85 0.6 undecidable manual P 253 119.4915 50 0.09 42
NI.AGOR.HHZ. 2015-08-29T18:47:22.90 0.3 undecidable manual P 266 118.4925 50 -0.72 53
NI.ZOU2.HHZ. 2015-08-29T18:47:21.20 0.3 undecidable manual S 300 54.3012 50 -0.14 71
IV.FRE8.HNZ. 2015-08-29T18:47:21.23 0.1 undecidable manual P 251 100.4217 50 0.4 81
NI.MPRI.HHZ. 2015-08-29T18:47:19.00 0.3 undecidable manual S 260 46.8198 50 -0.33 69
NI.CIMO.HHZ. 2015-08-29T18:47:17.99 0.3 undecidable manual P 270 87.6456 50 -0.87 53
SL.LJU.BHZ. 2015-08-29T18:47:17.19 0.3 undecidable manual P 112 78.1662 50 -0.2 67
NI.SABO.HHZ. 2015-08-29T18:47:15.90 0.6 undecidable manual S 175 36.3414 100 -0.22 48
NI.CLUD.HHZ. 2015-08-29T18:47:13.57 0.3 undecidable manual P 287 56.3991 50 -0.47 66
NI.ZOU2.HHZ. 2015-08-29T18:47:13.69 0.6 undecidable manual P 300 54.3012 50 -0.04 48
NI.ACOM.HHZ. 2015-08-29T18:47:12.50 0.3 undecidable manual S 348 26.5512 103 -0.29 72
NI.MPRI.HHZ. 2015-08-29T18:47:12.17 0.3 undecidable manual P 260 46.8198 50 -0.39 68
NI.SABO.HHZ. 2015-08-29T18:47:10.43 0.6 undecidable manual P 175 36.3414 100 -0.28 47
IV.PTCC.HHZ. 2015-08-29T18:47:10.80 0.3 undecidable manual S 300 20.7681 107 -0.03 77
NI.ACOM.HHZ. 2015-08-29T18:47:08.87 0.1 undecidable manual P 348 26.5512 103 0.09 100
IV.PTCC.HHZ. 2015-08-29T18:47:07.87 0.1 negative manual P 300 20.7681 107 0.22 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PTCC.HHE. ML:3.9 0.055150000000000005 0.6 AML other m 2015-08-29T18:47:12.85
TDMT - Time Domain Moment Tensor

TDMT details

Field Value
Magnitude4
Scalar Moment1.07064E+22 dyne-cm
Computed depth7 km
QualityAa
Variance Reduction55.84%
Double Couple83%
CLVD17%
ISO0%
Model usedCIA
Modemanual
Statusreviewed

Moment Tensor Components

Component Value
Mrr4.7948E+21
Mtt-6.0157E+21
Mpp1.2209E+21
Mrt7.8382E+21
Mrp3.6853E+21
Mtp3.1489E+21

Nodal Planes

Name Strike Dip Rake
PN1767664
PN232030150

Fault Plane solution

Focal Mechanism

psmeca (GMT documentation)

13.5775 46.3092 7 76 76 64 320 30 150 1.07064 22 14.0775 46.8092

TDMT references

More info and references

Station Distribution

Station Distribution

TDMT station details

Sta Dist Azi V R zcor
FUR 269.9 320.6 57.94% 121
CIMO 87.3 270.6 37.1% 102
CLUD 56 287.3 28.93% 98
MPRI 46.1 260.7 59.06% 96
ZOU2 54.1 301 58.22% 97
ABTA 95.1 301.2 38.71% 101
KBA 87.3 348.3 32.37% 100
MYKA 36 7.8 82.84% 96
OBKA 77.9 73.1 62.56% 98
SOKA 119 69.3 27.35% 102
LUSI 207.2 260.1 51.7% 113
CEY 91.1 133.8 84.91% 100
GBAS 78.8 121.6 68.43% 98
LJU 79.1 111.6 40.37% 99
MOZS 66.7 91.1 54.56% 98
SKDS 91.3 158.1 59.39% 100
VOJS 39 142 69.38% 95
ARSA 181.7 54.1 53.32% 109
KOSI 170.1 276.6 65.25% 110
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, /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