Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 3.0 on date 01-09-1986 and time 23:11:08 (UTC) in region 2 km E Polverara (PD)

A magnitude Md 3.0 earthquake occured in region: 2 km E Polverara (PD), on

  • 01-09-1986 23:11:08 (UTC)
  • 02-09-1986 01:11:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 45.3200, 11.9830 at 5 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Polverara PD 2 3275 3275
Brugine PD 3 7034 10309
Legnaro PD 3 8797 19106
Sant'Angelo di Piove di Sacco PD 4 7256 26362
Piove di Sacco PD 5 19718 46080
Campolongo Maggiore VE 5 10550 56630
Casalserugo PD 5 5348 61978
Saonara PD 6 10311 72289
Bovolenta PD 6 3482 75771
Ponte San Nicolò PD 6 13529 89300
Arzergrande PD 7 4767 94067
Vigonovo VE 8 9972 104039
Pontelongo PD 8 3819 107858
Fossò VE 9 7008 114866
Maserà di Padova PD 9 9081 123947
Albignasego PD 9 25577 149524
Campagna Lupia VE 10 7142 156666
Camponogara VE 10 13154 169820
Terrassa Padovana PD 10 2686 172506
Stra VE 10 7627 180133
Cartura PD 11 4665 184798
Noventa Padovana PD 11 11265 196063
Candiana PD 11 2393 198456
Codevigo PD 11 6440 204896
Correzzola PD 12 5298 210194
Fiesso d'Artico VE 12 8124 218318
Arre PD 12 2152 220470
Conselve PD 13 10302 230772
Padova PD 13 210401 441173
Due Carrare PD 13 9050 450223
Vigonza PD 14 22748 472971
Dolo VE 14 14888 487859
Cona VE 15 2985 490844
San Pietro Viminario PD 15 3039 493883
Cadoneghe PD 15 16206 510089
Pianiga VE 16 12280 522369
Montegrotto Terme PD 16 11331 533700
Abano Terme PD 16 19950 553650
Battaglia Terme PD 17 3881 557531
Pernumia PD 17 3892 561423
Agna PD 17 3368 564791
Mira VE 17 38575 603366
Bagnoli di Sopra PD 17 3618 606984
Tribano PD 17 4427 611411
Vigodarzere PD 18 13014 624425
Selvazzano Dentro PD 18 22886 647311
Villanova di Camposampiero PD 19 6139 653450
Rubano PD 19 16173 669623
Galzignano Terme PD 20 4371 673994

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km SE of Padova (210401 inhabitants)
31 Km W of Venezia (263352 inhabitants)
31 Km NE of Rovigo (51867 inhabitants)
43 Km SE of Vicenza (112953 inhabitants)
44 Km SW of Treviso (83731 inhabitants)
61 Km NE of Ferrara (133155 inhabitants)
78 Km E of Verona (258765 inhabitants)
88 Km SW 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
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		Md 3.0 1986-09-01
23:11:08		 45.32 11.983 5 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 33449
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-09-01 23:11:08 ± 0.519
Latitude 45.3200 ± 0.0155
Longitude 11.9830 ± 0.0183
Depth (km) 5 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 33449

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 2244.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 127
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 36
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00672
Epicentral distance of station farthest from the epicenter (degree) 0.01546
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitude information

Md:3.0

Field Value
Value 3.0
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 33449
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:34:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.CRE.Z. 1986-09-01T23:12:01.50 10.0 undecidable manual SN 180 1.6983 0.58 0.7
--.RBL.Z. 1986-09-01T23:11:58.20 10.0 undecidable manual SN 43 1.5651 0.34 0.6
--.DRE.Z. 1986-09-01T23:11:54.70 10.0 undecidable manual SN 52 1.4319 0.02 0.7
--.BOO.Z. 1986-09-01T23:11:50.90 10.0 undecidable manual SN 36 1.2543 0.3 0.7
--.BAD.Z. 1986-09-01T23:11:50.50 10.0 undecidable manual SN 42 1.2654 -0.17 0.7
--.UDI.Z. 1986-09-01T23:11:48.70 10.0 undecidable manual SN 48 1.1433 0.89 0.5
--.RNI.Z. 1986-09-01T23:11:48.00 10.0 undecidable manual SN 305 1.1433 0.27 0.7
--.BUA.Z. 1986-09-01T23:11:48.00 10.0 undecidable manual SN 40 1.1988 -1 0.4
--.PAG.Z. 1986-09-01T23:11:45.40 10.0 undecidable manual SG 320 1.0434 0.2 0.7
--.TAL.Z. 1986-09-01T23:11:44.30 10.0 undecidable manual SG 51 0.9768 1.09 0.3
--.ERT.Z. 1986-09-01T23:11:43.40 10.0 undecidable manual SG 15 0.9879 -0.06 0.7
--.SAL.Z. 1986-09-01T23:11:43.50 10.0 undecidable manual SG 285 1.0545 -2.1 0.1
--.RCL.Z. 1986-09-01T23:11:43.30 10.0 undecidable manual SG 28 0.9546 0.92 0.4
--.MDI.Z. 1986-09-01T23:11:40.00 10.0 undecidable manual PN 286 1.6428 1.77 0.2
--.CRE.Z. 1986-09-01T23:11:39.50 10.0 undecidable manual PN 180 1.6983 0.64 1.2
--.BDI.Z. 1986-09-01T23:11:39.00 10.0 undecidable manual PN 217 1.5873 1.55 0.3
--.VEA.Z. 1986-09-01T23:11:37.80 10.0 undecidable manual PN 255 1.7205 -1.37 0.5
--.CTI.Z. 1986-09-01T23:11:37.50 10.0 undecidable manual SG 341 0.7548 1.45 0.2
--.DDS.Z. 1986-09-01T23:11:36.60 10.0 undecidable manual SG 314 0.777 -0.24 0.7
--.RBL.Z. 1986-09-01T23:11:35.50 10.0 undecidable manual PN 43 1.5651 -1.59 0.3
--.DRE.Z. 1986-09-01T23:11:34.70 10.0 undecidable manual PN 52 1.4319 -0.55 1.4
--.ZOU.Z. 1986-09-01T23:11:34.90 10.0 undecidable manual PN 28 1.4097 -0.04 1.7
--.BOO.Z. 1986-09-01T23:11:32.20 10.0 undecidable manual PN 36 1.2543 -0.7 1.3
--.BAD.Z. 1986-09-01T23:11:32.20 10.0 undecidable manual PN 42 1.2654 -0.73 1.3
--.BUA.Z. 1986-09-01T23:11:31.00 10.0 undecidable manual PN 40 1.1988 -0.98 1
--.UDI.Z. 1986-09-01T23:11:31.50 10.0 undecidable manual PN 48 1.1433 0.21 1.8
--.PAG.Z. 1986-09-01T23:11:30.00 10.0 undecidable manual PG 320 1.0434 0.21 1.8
--.RNI.Z. 1986-09-01T23:11:30.70 10.0 undecidable manual PN 305 1.1433 -0.54 1.6
--.CAV.Z. 1986-09-01T23:11:29.80 10.0 undecidable manual PG 339 1.0323 0.23 1.8
--.SAL.Z. 1986-09-01T23:11:29.00 10.0 undecidable manual PG 285 1.0545 -1.02 1
--.TAL.Z. 1986-09-01T23:11:28.00 10.0 undecidable manual PG 51 0.9768 -0.63 1.5
--.RCL.Z. 1986-09-01T23:11:28.20 10.0 undecidable manual PG 28 0.9546 0.05 1.9
--.ERT.Z. 1986-09-01T23:11:28.80 10.0 undecidable manual PG 15 0.9879 0.02 1.9
--.CTI.Z. 1986-09-01T23:11:25.30 10.0 positive manual PG 341 0.7548 0.8 2.5
--.CAE.Z. 1986-09-01T23:11:25.30 10.0 undecidable manual PG 24 0.7437 0.95 1.1
--.DDS.Z. 1986-09-01T23:11:25.10 10.0 undecidable manual PG 314 0.777 0.14 1.8
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