Earthquake with magnitude of ML 3.1 on date 09-10-2011 and time 12:23:17 (UTC) in region 4 km NW Varano de' Melegari (PR)

A magnitude ML 3.1 earthquake occured in region: 4 km NW Varano de' Melegari (PR), on

  • 09-10-2011 12:23:17 (UTC)
  • 09-10-2011 14:23:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.7200, 9.9990 at 22 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
Varano de' Melegari PR 4 2676 2676
Pellegrino Parmense PR 6 1048 3724
Fornovo di Taro PR 9 6100 9824
Salsomaggiore Terme PR 11 19831 29655
Solignano PR 12 1773 31428
Medesano PR 12 10828 42256
Varsi PR 14 1230 43486
Terenzo PR 14 1196 44682
Bore PR 16 749 45431
Vernasca PC 16 2131 47562
Calestano PR 16 2100 49662
Fidenza PR 17 26770 76432
Noceto PR 17 13001 89433
Collecchio PR 18 14403 103836
Lugagnano Val d'Arda PC 18 4116 107952
Castell'Arquato PC 18 4713 112665
Sala Baganza PR 18 5561 118226
Valmozzola PR 19 539 118765
Felino PR 19 8790 127555
Alseno PC 20 4714 132269

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km W of Parma (192836 inhabitants)
44 Km SE of Piacenza (102191 inhabitants)
46 Km S of Cremona (71901 inhabitants)
50 Km W of Reggio nell'Emilia (171345 inhabitants)
69 Km N of La Spezia (93959 inhabitants)
70 Km W of Carpi (70699 inhabitants)
72 Km N of Carrara (63133 inhabitants)
74 Km W of Modena (184973 inhabitants)
77 Km N of Massa (69479 inhabitants)
84 Km SE of Pavia (72576 inhabitants)
91 Km E of Genova (586655 inhabitants)
93 Km S of Brescia (196480 inhabitants)
97 Km N of Viareggio (62467 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
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
Md 2.9
ML 3.1
2011-10-09
12:23:17
44.72 9.999 22 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1295579
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-10-09 12:23:17 ± 0.11
Latitude 44.7200 ± 0.0072
Longitude 9.9990 ± 0.0101
Depth (km) 22 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1295579

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 815
Semi-minor axis of confidence ellipse (meter) 450
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 306
Circular confidence region, given by single value of horizontal uncertainty (meter) 1131.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 65
Number of associated phases, regardless of their use for origin computation 92
Number of defining phases 48
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.84
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 2.69976
Number of stations at which the event was observed 72
Number of stations from which data was used for origin computation 37
Magnitudes information

ML:3.1

Field Value
Value 3.1
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 1295579
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:40:21

Md:2.9

Field Value
Value 2.9
Uncertainty 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 1295579
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:40:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CIGN.HHZ. 2011-10-09T12:24:17.43 10.0 undecidable manual Pn 0 0 0
IV.DOI.HHE. 2011-10-09T12:24:17.08 10.0 undecidable manual Sg 0 0 0
SI.BOSI.HHE. 2011-10-09T12:24:16.29 10.0 undecidable manual Pn 0 0 0
IV.CAFI.HHE. 2011-10-09T12:24:16.29 10.0 undecidable manual Pn 0 0 0
IV.CASP.HHN. 2011-10-09T12:24:16.64 10.0 undecidable manual Pn 0 0 0
NI.AGOR.HHE. 2011-10-09T12:24:14.27 10.0 undecidable manual Sn 0 0 0
IV.FROS.HHZ. 2011-10-09T12:24:11.16 10.0 undecidable manual Sg 0 0 0
IV.IMI.HHN. 2011-10-09T12:24:10.03 10.0 undecidable manual Pn 0 0 0
NI.ACOM.HHN. 2011-10-09T12:24:06.67 10.0 undecidable manual Pn 0 0 0
IV.SASS.HHZ. 2011-10-09T12:24:06.27 10.0 undecidable manual Sg 0 0 0
CH.DIX.HHE. 2011-10-09T12:24:05.36 10.0 undecidable manual Sn 0 0 0
OE.WTTA.HHZ. 2011-10-09T12:24:05.55 10.0 undecidable manual Pn 0 0 0
GU.RORO.HHN. 2011-10-09T12:24:04.82 10.0 undecidable manual Pn 0 0 0
GU.ROTM.HHZ. 2011-10-09T12:24:01.66 10.0 undecidable manual Sg 0 0 0
IV.FVI.HHE. 2011-10-09T12:24:00.31 0.6 undecidable manual Pg 45 299.6778 0.002 14
IV.ORI.HHE. 2011-10-09T12:24:00.59 10.0 undecidable manual Pn 0 0 0
IV.FIR.HHE. 2011-10-09T12:24:00.09 10.0 undecidable manual Pn 0 0 0
IV.TEOL.HHE. 2011-10-09T12:24:00.25 0.6 undecidable manual Sg 61 149.3394 0.959 32
SI.ROSI.HHE. 2011-10-09T12:24:00.57 10.0 undecidable manual Sn 0 0 0
SI.RISI.HHZ. 2011-10-09T12:24:00.36 10.0 undecidable manual Pn 0 0 0
CH.DIX.HHE. 2011-10-09T12:23:59.02 10.0 undecidable manual Pn 0 0 0
IV.MRGE.HHZ. 2011-10-09T12:23:59.61 10.0 undecidable manual Pn 0 0 0
IV.SSFR.HHE. 2011-10-09T12:23:57.77 10.0 undecidable manual Pn 0 0 0
SI.ROSI.HHE. 2011-10-09T12:23:57.45 10.0 undecidable manual Pn 0 0 0
IV.PIEI.HHE. 2011-10-09T12:23:57.63 10.0 undecidable manual Pn 0 0 0
IV.MURB.HHE. 2011-10-09T12:23:57.45 10.0 undecidable manual Pn 0 0 0
GU.SATI.HHZ. 2011-10-09T12:23:57.41 10.0 undecidable manual Sg 0 0 0
IV.ATTE.HHZ. 2011-10-09T12:23:57.25 10.0 undecidable manual Pn 0 0 0
SI.ABSI.HHE. 2011-10-09T12:23:56.63 10.0 undecidable manual Sn 0 0 0
IV.MPAG.EHZ. 2011-10-09T12:23:55.42 10.0 undecidable manual Pg 0 0 0
IV.ROVR.HHZ. 2011-10-09T12:23:55.42 0.6 undecidable manual Sg 39 132.6672 -0.009 45
IV.CRMI.HHN. 2011-10-09T12:23:55.24 0.6 undecidable manual Sg 143 128.7711 0.839 36
CH.MMK.HHZ. 2011-10-09T12:23:54.13 10.0 undecidable manual Pn 0 0 0
IV.FSSB.HHE. 2011-10-09T12:23:54.24 0.6 undecidable manual Pg 116 248.5623 0.301 23
IV.ATMC.EHZ. 2011-10-09T12:23:53.09 10.0 undecidable manual Pg 0 0 0
GU.RSP.HHE. 2011-10-09T12:23:53.90 10.0 undecidable manual Pn 0 0 0
IV.MAGA.HHZ. 2011-10-09T12:23:53.87 0.6 undecidable manual Sg 23 126.9729 -0.039 46
CH.FUORN.HHE. 2011-10-09T12:23:53.84 10.0 undecidable manual Pn 0 0 0
NI.AGOR.HHE. 2011-10-09T12:23:53.43 10.0 undecidable manual Pn 0 0 0
SI.ABSI.HHE. 2011-10-09T12:23:53.93 10.0 undecidable manual Pn 0 0 0
IV.CPGN.EHZ. 2011-10-09T12:23:53.81 10.0 undecidable manual Pn 0 0 0
GU.SATI.HHZ. 2011-10-09T12:23:52.16 10.0 undecidable manual Pg 0 0 0
CH.DAVOX.HHN. 2011-10-09T12:23:52.55 0.6 undecidable manual Pg 358 228.7932 1.072 20
IV.DOI.HHE. 2011-10-09T12:23:51.95 10.0 undecidable manual Pg 0 0 0
IV.SALO.HHZ. 2011-10-09T12:23:50.57 0.6 undecidable manual Sg 22 107.8143 1.752 22
SI.MOSI.HHZ. 2011-10-09T12:23:49.92 0.6 undecidable manual Pg 11 214.6185 0.199 30
CH.BERNI.HHZ. 2011-10-09T12:23:49.50 10.0 undecidable manual Pg 0 0 0
SI.KOSI.HHZ. 2011-10-09T12:23:49.97 0.6 undecidable manual Pg 28 221.0121 -0.542 27
IV.APPI.EHZ. 2011-10-09T12:23:49.74 0.6 undecidable manual Pg 26 217.116 -0.296 29
CH.FUSIO.HHN. 2011-10-09T12:23:49.96 0.6 undecidable manual Pg 332 218.6145 -0.257 29
IV.TRIF.HHE. 2011-10-09T12:23:49.54 10.0 undecidable manual Pg 0 0 0
IV.BRMO.HHE. 2011-10-09T12:23:47.60 0.3 undecidable manual Pg 8 196.9584 0.082 51
IV.FROS.HHZ. 2011-10-09T12:23:47.77 10.0 undecidable manual Pg 0 0 0
IV.SFI.EHE. 2011-10-09T12:23:46.07 0.3 undecidable manual Pg 121 172.2942 1.619 31
GU.TRAV.HHN. 2011-10-09T12:23:46.93 0.3 undecidable manual Pg 297 197.0583 -0.599 45
IV.MONC.HHE. 2011-10-09T12:23:45.34 10.0 undecidable manual Pg 0 0 0
NI.CGRP.HHZ. 2011-10-09T12:23:45.81 0.3 undecidable manual Pg 47 190.8645 -0.951 40
IV.ASQU.HHE. 2011-10-09T12:23:45.63 0.3 undecidable manual Pg 125 175.2912 0.809 46
IV.CSNT.HHZ. 2011-10-09T12:23:44.31 0.6 undecidable manual Pg 143 172.3941 -0.151 38
IV.BDI.HHZ. 2011-10-09T12:23:44.15 0.6 undecidable manual Sg 147 86.9463 0.83 40
GU.MAIM.HHZ. 2011-10-09T12:23:44.94 0.6 undecidable manual Sg 156 97.5246 -1.17 32
IV.SASS.HHZ. 2011-10-09T12:23:44.88 10.0 undecidable manual Pg 0 0 0
IV.VARE.HHN. 2011-10-09T12:23:42.83 0.3 undecidable manual Pg 323 159.4182 -0.021 62
IV.IMOL.EHZ. 2011-10-09T12:23:42.85 0.6 undecidable manual Pg 106 143.5452 1.982 18
CH.MUGIO.HHE. 2011-10-09T12:23:41.69 0.3 undecidable manual Pg 331 152.8359 -0.338 60
IV.MABI.HHN. 2011-10-09T12:23:41.51 0.1 undecidable manual Pg 15 153.4353 -0.591 75
GU.ROTM.HHZ. 2011-10-09T12:23:41.87 10.0 undecidable manual Pg 0 0 0
GU.FINB.HHE. 2011-10-09T12:23:41.21 0.3 undecidable manual Pg 246 145.5432 0.083 65
IV.TEOL.HHE. 2011-10-09T12:23:40.31 0.3 undecidable manual Pg 61 149.3394 -1.284 42
IV.QLNO.HHE. 2011-10-09T12:23:40.32 0.6 undecidable manual Pg 252 137.9619 0.151 44
IV.MTRZ.HHN. 2011-10-09T12:23:39.38 0.6 undecidable manual Pg 111 121.4895 1.736 22
IV.CRMI.HHN. 2011-10-09T12:23:38.76 0.3 undecidable manual Pg 143 128.7711 -0.006 68
IV.ROVR.HHZ. 2011-10-09T12:23:38.52 0.1 undecidable manual Pg 39 132.6672 -0.844 72
GU.PCP.HHE. 2011-10-09T12:23:37.58 0.1 undecidable manual Pg 261 116.4945 0.698 78
IV.MAGA.HHZ. 2011-10-09T12:23:37.77 0.1 undecidable manual Pg 23 126.9729 -0.716 77
IV.NOVE.EHZ. 2011-10-09T12:23:36.28 0.6 undecidable manual Sg 81 57.0984 0.785 42
IV.FNVD.HHZ. 2011-10-09T12:23:35.54 0.3 undecidable manual Pg 124 108.0141 -0.046 71
IV.MSSA.HHE. 2011-10-09T12:23:35.81 0.3 undecidable manual Sg 221 58.7967 -0.125 76
IV.SALO.HHZ. 2011-10-09T12:23:35.93 0.1 undecidable manual Pg 22 107.8143 0.384 87
GU.SC2M.HHZ. 2011-10-09T12:23:34.48 0.6 undecidable manual Sg 227 50.8158 0.622 46
GU.MAIM.HHZ. 2011-10-09T12:23:33.25 0.3 undecidable manual Pg 156 97.5246 -0.733 59
IV.RAVA.EHZ. 2011-10-09T12:23:33.65 0.6 undecidable manual Pg 87 88.3449 1.077 35
IV.SBPO.HHN. 2011-10-09T12:23:32.01 0.3 undecidable manual Pg 63 81.1521 0.531 67
IV.ZCCA.HHN. 2011-10-09T12:23:32.95 0.3 undecidable manual Pg 118 87.4458 0.508 67
IV.CTL8.EHZ. 2011-10-09T12:23:31.97 10.0 undecidable manual Pg 0 0 0
IV.BDI.HHZ. 2011-10-09T12:23:30.85 0.3 undecidable manual Pg 147 86.9463 -1.519 41
IV.PRMA.HHE. 2011-10-09T12:23:27.71 0.6 undecidable manual Sg 79 25.1526 0.075 55
IV.NOVE.EHZ. 2011-10-09T12:23:27.49 0.3 undecidable manual Pg 81 57.0984 -0.366 73
IV.MSSA.HHE. 2011-10-09T12:23:27.70 0.1 undecidable manual Pg 221 58.7967 -0.407 96
GU.SC2M.HHZ. 2011-10-09T12:23:26.64 0.1 undecidable manual Pg 227 50.8158 -0.268 100
IV.BOB.HHZ. 2011-10-09T12:23:26.60 0.1 undecidable manual Pg 277 43.8228 0.719 89
IV.PRMA.HHE. 2011-10-09T12:23:22.36 0.1 negative manual Pg 79 25.1526 -0.957 83
TDMT - Time Domain Moment Tensor
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