Earthquake with magnitude of Md 2.9 on date 25-09-1985 and time 23:23:19 (Italy) in region 5 km E Canossa (RE)

A magnitude Md 2.9 earthquake occured in region: 5 km E Canossa (RE), on

  • 25-09-1985 21:23:19 (UTC)
  • 25-09-1985 23:23:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.5740, 10.4610 at 17 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
Canossa RE 5 3844 3844
San Polo d'Enza RE 7 6083 9927
Quattro Castella RE 7 13195 23122
Vezzano sul Crostolo RE 8 4259 27381
Casina RE 8 4504 31885
Traversetolo PR 10 9425 41310
Bibbiano RE 10 10268 51578
Neviano degli Arduini PR 11 3649 55227
Albinea RE 12 8860 64087
Viano RE 13 3374 67461
Montechiarugolo PR 14 10813 78274
Vetto RE 14 1860 80134
Carpineti RE 14 4064 84198
Baiso RE 14 3315 87513
Montecchio Emilia RE 14 10530 98043
Cavriago RE 15 9839 107882
Lesignano de' Bagni PR 15 5028 112910
Castelnovo ne' Monti RE 16 10465 123375
Langhirano PR 16 10315 133690
Scandiano RE 18 25483 159173
Reggio nell'Emilia RE 19 171345 330518

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km SW of Reggio nell'Emilia (171345 inhabitants)
27 Km SE of Parma (192836 inhabitants)
38 Km W of Modena (184973 inhabitants)
41 Km SW of Carpi (70699 inhabitants)
62 Km NE of Carrara (63133 inhabitants)
65 Km NE of Massa (69479 inhabitants)
70 Km W of Bologna (386663 inhabitants)
71 Km SE of Cremona (71901 inhabitants)
72 Km NE of La Spezia (93959 inhabitants)
80 Km NW of Pistoia (90315 inhabitants)
80 Km N of Viareggio (62467 inhabitants)
81 Km SE of Piacenza (102191 inhabitants)
81 Km N of Lucca (89046 inhabitants)
92 Km NW of Prato (191150 inhabitants)
96 Km N of Pisa (89158 inhabitants)
96 Km W of Ferrara (133155 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 2.9 1985-09-25
21:23:19
44.574 10.461 17 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 13759
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-09-25 21:23:19 ± 0.322
Latitude 44.5740 ± 0.0130
Longitude 10.4610 ± 0.0207
Depth (km) 17 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 13759

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) 2190.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 62
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 44
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00421
Epicentral distance of station farthest from the epicenter (degree) 0.03707
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 33
Magnitude information

Md:2.9

Field Value
Value 2.9
Uncertainty
Num. used stations 9
Type of magnitude Md
Reference to an origin 13759
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:16:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.DA9.Z. 1985-09-25T21:24:24.00 10.0 undecidable manual SN 268 2.2866 1.09 0.3
--.CVF.Z. 1985-09-25T21:24:22.80 10.0 undecidable manual SN 209 2.3088 -0.62 0.5
--.BSF.Z. 1985-09-25T21:24:20.40 10.0 undecidable manual PN 322 4.1181 -0.85 0.7
--.ORO.Z. 1985-09-25T21:24:17.50 10.0 undecidable manual SN 301 2.0313 0.53 0.6
--.CTI.Z. 1985-09-25T21:24:09.00 10.0 undecidable manual SN 28 1.6872 0.3 0.7
--.CK1.Z. 1985-09-25T21:24:07.00 10.0 undecidable manual SN 264 1.554 1.41 0.2
--.FIN.Z. 1985-09-25T21:24:06.90 10.0 undecidable manual SN 257 1.6428 -0.74 0.5
--.LMR.Z. 1985-09-25T21:24:06.90 10.0 undecidable manual PN 247 3.0858 -0.26 1.3
--.FRF.Z. 1985-09-25T21:24:05.00 10.0 undecidable manual PN 250 2.9082 0.33 1.3
--.SAX.Z. 1985-09-25T21:24:03.70 10.0 undecidable manual PN 343 2.775 0.88 0.9
--.VOY.Z. 1985-09-25T21:24:03.00 10.0 undecidable manual PN 57 2.8083 -0.28 1.4
--.BG1.Z. 1985-09-25T21:24:02.00 10.0 undecidable manual SN 336 1.3098 2.34 0
--.FO1.Z. 1985-09-25T21:24:01.00 10.0 undecidable manual PN 37 2.5863 0.86 0.9
--.ZOU.Z. 1985-09-25T21:24:00.00 10.0 undecidable manual PN 40 2.6418 -0.95 0.8
--.DA9.Z. 1985-09-25T21:23:57.50 10.0 undecidable manual PN 268 2.2866 1.46 0.4
--.CVF.Z. 1985-09-25T21:23:55.50 10.0 undecidable manual PN 209 2.3088 -0.84 1
--.MON.Z. 1985-09-25T21:23:55.50 10.0 undecidable manual PN 249 2.331 -1.13 0.7
--.AS1.Z. 1985-09-25T21:23:55.50 10.0 undecidable manual PN? 132 2.1867 0.9 0.4
--.SAL.Z. 1985-09-25T21:23:54.50 10.0 undecidable manual SN 2 1.0212 1.48 0.2
--.OSS.Z. 1985-09-25T21:23:54.60 10.0 undecidable manual PN 353 2.1201 0.87 1
--.ORO.Z. 1985-09-25T21:23:52.00 10.0 undecidable manual PN 301 2.0313 -0.61 1.4
--.VDL.Z. 1985-09-25T21:23:52.20 10.0 undecidable manual PN 339 2.0313 -0.29 1.7
--.AR1.Z. 1985-09-25T21:23:52.00 10.0 undecidable manual PN 119 2.0757 -1.16 0.7
--.IMP.Z. 1985-09-25T21:23:50.70 10.0 undecidable manual PN 250 1.9536 -0.68 1.3
--.TMA.Z. 1985-09-25T21:23:49.90 10.0 undecidable manual PN 324 1.887 -0.7 1.3
--.ROB.Z. 1985-09-25T21:23:49.70 10.0 undecidable manual PN 262 1.8648 -0.51 1.5
--.CAV.Z. 1985-09-25T21:23:49.60 10.0 undecidable manual PN 21 1.8537 -0.47 1.6
--.VAI.Z. 1985-09-25T21:23:48.50 10.0 undecidable manual PN 317 1.7538 -0.2 1.8
--.PS9.Z. 1985-09-25T21:23:48.50 10.0 undecidable manual SN 176 0.8436 -0.22 0.7
--.CTI.Z. 1985-09-25T21:23:47.50 10.0 undecidable manual PN 28 1.6872 -0.34 1.7
--.CK1.Z. 1985-09-25T21:23:46.50 10.0 undecidable manual PN 264 1.554 0.45 1.6
--.FIN.Z. 1985-09-25T21:23:46.60 10.0 undecidable manual PN 257 1.6428 -0.63 1.4
--.CH1.Z. 1985-09-25T21:23:46.00 10.0 undecidable manual PN 130 1.4208 1.84 0.2
--.RNI.Z. 1985-09-25T21:23:43.20 10.0 undecidable manual PN 4 1.4097 -0.78 1.2
--.BG1.Z. 1985-09-25T21:23:42.50 10.0 undecidable manual PN 336 1.3098 -0.12 1.9
--.SAL.Z. 1985-09-25T21:23:40.00 10.0 undecidable manual PN 2 1.0212 1.22 0.7
--.BD1.Z. 1985-09-25T21:23:39.50 10.0 undecidable manual SG 168 0.5106 1.36 0.2
--.GAR.Z. 1985-09-25T21:23:39.70 10.0 undecidable manual PN 6 1.1322 -0.53 1.6
--.SAV.Z. 1985-09-25T21:23:39.50 10.0 undecidable manual PN 353 1.1544 -0.89 1.1
--.BVT.Z. 1985-09-25T21:23:37.70 10.0 undecidable manual SG 257 0.4662 1.16 0.3
--.PS9.Z. 1985-09-25T21:23:36.50 10.0 undecidable manual PN 176 0.8436 0.2 1.8
--.CO9.Z. 1985-09-25T21:23:35.00 10.0 undecidable manual PG 284 0.7326 0.69 1.4
--.BD1.Z. 1985-09-25T21:23:30.50 10.0 undecidable manual PG 168 0.5106 0.3 1.8
--.BVT.Z. 1985-09-25T21:23:28.50 10.0 undecidable manual PG 257 0.4662 -0.77 1.3
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