Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 3.4 on date 08-03-1986 and time 00:05:07 (Italy) in region Costa Marchigiana Anconetana (Ancona)

A magnitude Md 3.4 earthquake occured in region: Costa Marchigiana Anconetana (Ancona), on

  • 07-03-1986 23:05:07 (UTC)
  • 08-03-1986 00:05:07 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.7450, 13.2400 at 4 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
Senigallia AN 4 45027 45027
Mondolfo PU 12 14277 59304
Montemarciano AN 13 9992 69296
Trecastelli AN 13 7625 76921
San Costanzo PU 14 4786 81707
Morro d'Alba AN 16 1903 83610
Ostra AN 16 6875 90485
Monte San Vito AN 16 6848 97333
Monte Porzio PU 17 2836 100169
Chiaravalle AN 18 14796 114965
Falconara Marittima AN 18 26565 141530
Corinaldo AN 19 4998 146528
San Marcello AN 19 2057 148585
Belvedere Ostrense AN 19 2234 150819
Monsano AN 20 3405 154224

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km SE of Fano (60888 inhabitants)
27 Km NW of Ancona (100861 inhabitants)
32 Km SE of Pesaro (94582 inhabitants)
64 Km SE of Rimini (147750 inhabitants)
91 Km E of Cesena (96758 inhabitants)
98 Km NE of Foligno (57155 inhabitants)
99 Km NE of Perugia (166134 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 3.4 1986-03-07
23:05:07		 43.745 13.24 4 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 23779
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-03-07 23:05:07 ± 0.475
Latitude 43.7450 ± 0.0096
Longitude 13.2400 ± 0.0174
Depth (km) 4 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 23779

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) 1757.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 81
Number of associated phases, regardless of their use for origin computation 61
Number of defining phases 61
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) 0.00291
Epicentral distance of station farthest from the epicenter (degree) 0.06055
Number of stations at which the event was observed 47
Number of stations from which data was used for origin computation 47
Magnitude information

Md:3.4

Field Value
Value 3.4
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 23779
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:25:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.VIT.Z. 1986-03-07T23:06:47.60 10.0 undecidable manual PN 314 6.7155 0.81 0.6
--.FIN.Z. 1986-03-07T23:06:46.30 10.0 undecidable manual SN 278 3.6408 0.09 0.6
--.SKO.Z. 1986-03-07T23:06:41.00 10.0 undecidable manual PN 103 6.2493 0.7 0.8
--.OHR.Z. 1986-03-07T23:06:39.30 10.0 undecidable manual PN 112 6.1494 0.31 1.1
--.ROF.Z. 1986-03-07T23:06:36.00 10.0 undecidable manual PN 313 5.9163 0.41 1
--.MOF.Z. 1986-03-07T23:06:36.40 10.0 undecidable manual PN 315 5.9052 0.91 0.6
--.DRE.Z. 1986-03-07T23:06:16.90 10.0 undecidable manual SN 6 2.4309 -0.69 0.6
--.ZOU.Z. 1986-03-07T23:06:25.70 10.0 undecidable manual SN 356 2.8083 -0.74 0.6
--.BOO.Z. 1986-03-07T23:06:20.50 10.0 undecidable manual SN? 357 2.5752 -0.22 0
--.CTI.Z. 1986-03-07T23:06:19.50 10.0 undecidable manual SN 334 2.553 -0.9 0.3
--.TAL.Z. 1986-03-07T23:06:11.20 10.0 undecidable manual SN 357 2.1756 -0.06 1.1
--.BAD.Z. 1986-03-07T23:06:17.50 10.0 undecidable manual SN 359 2.4753 -1.2 0.2
--.LSD.Z. 1986-03-07T23:06:17.30 10.0 undecidable manual PN 293 4.6398 -0.95 0.7
--.RCL.Z. 1986-03-07T23:06:17.50 10.0 undecidable manual SN 350 2.442 -0.22 1
--.SOO.Z. 1986-03-07T23:06:15.60 10.0 undecidable manual PN 281 4.4511 -0.09 1.5
--.DA9.Z. 1986-03-07T23:06:15.38 10.0 undecidable manual PN 281 4.3623 1.09 0.5
--.VOY.Z. 1986-03-07T23:06:15.90 10.0 undecidable manual SN 10 2.331 0.97 0.4
--.CAE.Z. 1986-03-07T23:06:14.30 10.0 undecidable manual SN 345 2.331 -0.61 0.7
--.UDI.Z. 1986-03-07T23:06:14.20 10.0 undecidable manual SN 359 2.3088 -0.41 0.9
--.STV.Z. 1986-03-07T23:06:13.50 10.0 undecidable manual PN 278 4.2624 0.41 1.2
--.CEY.N. 1986-03-07T23:06:12.40 10.0 undecidable manual SN! 22 2.1534 1.47 0
--.ORX.Z. 1986-03-07T23:06:10.60 10.0 undecidable manual PN 298 4.1736 -1.2 0.4
--.BRT.Z. 1986-03-07T23:06:09.73 10.0 positive manual PN 133 4.0626 -0.52 1.2
--.MG9.Z. 1986-03-07T23:06:09.75 10.0 undecidable manual PN 153 3.9849 0.55 1.1
--.IMP.Z. 1986-03-07T23:06:07.60 10.0 undecidable manual PN 274 3.8406 0.29 1.4
--.VAI.Z. 1986-03-07T23:06:07.44 10.0 positive manual PN 305 3.7962 0.74 0.9
--.FIN.Z. 1986-03-07T23:06:04.20 10.0 undecidable manual PN 278 3.6408 -0.23 1.6
--.SGO.Z. 1986-03-07T23:06:03.59 10.0 positive manual PN 153 3.5187 0.73 1
--.CKI.Z. 1986-03-07T23:06:03.77 10.0 undecidable manual PN 282 3.6186 -0.34 1.5
--.MDI.Z. 1986-03-07T23:05:59.61 10.0 undecidable manual PN 310 3.219 1 0.7
--.SOR.Z. 1986-03-07T23:05:57.90 10.0 undecidable manual PN 165 3.2523 -1.26 0.5
--.TR9.Z. 1986-03-07T23:05:56.00 10.0 undecidable manual PN 150 3.0636 -0.52 1.5
--.FOA.Z. 1986-03-07T23:05:53.70 10.0 undecidable manual PN 353 2.8527 0.1 1.8
--.SAL.Z. 1986-03-07T23:05:52.11 10.0 negative manual PN 314 2.6751 0.96 0.8
--.ZOU.Z. 1986-03-07T23:05:52.90 10.0 undecidable manual PN? 356 2.8083 -0.12 0.7
--.RBL.Z. 1986-03-07T23:05:52.20 10.0 positive manual PN 4 2.6973 0.73 1.2
--.CTI.Z. 1986-03-07T23:05:50.20 10.0 undecidable manual PN 334 2.553 0.68 1.2
--.MSC.Z. 1986-03-07T23:05:50.20 10.0 undecidable manual PN 167 2.6085 0.04 1.8
--.BOO.Z. 1986-03-07T23:05:49.20 10.0 undecidable manual PN 357 2.5752 -0.51 1.4
--.LJU.Z. 1986-03-07T23:05:49.50 10.0 undecidable manual PN 20 2.4642 1.21 0.5
--.SGG.Z. 1986-03-07T23:05:48.50 10.0 undecidable manual PN 159 2.4975 -0.2 1.8
--.RCL.Z. 1986-03-07T23:05:47.60 10.0 undecidable manual PN? 350 2.442 -0.38 0.6
--.DRE.Z. 1986-03-07T23:05:47.10 10.0 undecidable manual PN 6 2.4309 -0.8 1
--.BAD.Z. 1986-03-07T23:05:47.70 10.0 undecidable manual PN 359 2.4753 -0.84 0.9
--.DUI.Z. 1986-03-07T23:05:46.22 10.0 undecidable manual PN 156 2.2644 0.72 1.1
--.UDI.Z. 1986-03-07T23:05:45.70 10.0 undecidable manual PN 359 2.3088 -0.48 1.4
--.VOY.Z. 1986-03-07T23:05:45.80 10.0 undecidable manual PN 10 2.331 -0.57 1.3
--.CAE.Z. 1986-03-07T23:05:45.90 10.0 undecidable manual PN? 345 2.331 -0.45 0.6
--.CEY.Z. 1986-03-07T23:05:44.50 10.0 undecidable manual PN 22 2.1534 0.45 1.6
--.SD1.Z. 1986-03-07T23:05:43.45 10.0 undecidable manual PN 167 2.0646 0.58 1.2
--.TAL.Z. 1986-03-07T23:05:43.80 10.0 undecidable manual PN 357 2.1756 -0.45 1.4
--.PS9.Z. 1986-03-07T23:05:42.00 10.0 undecidable manual PN 270 1.9536 0.72 1.1
--.TRI.Z. 1986-03-07T23:05:42.40 10.0 positive manual PN 10 1.998 0.26 1.7
--.RDP.Z. 1986-03-07T23:05:42.50 10.0 undecidable manual PN 190 2.0091 0.38 1.5
--.BDI.Z. 1986-03-07T23:05:41.70 10.0 undecidable manual PN 280 1.9203 0.86 0.9
--.MAO.Z. 1986-03-07T23:05:41.83 10.0 positive manual PN 229 2.0091 -0.26 1.8
--.MNS.Z. 1986-03-07T23:05:33.40 10.0 negative manual PN 196 1.4097 -0.8 1.1
--.ASS.Z. 1986-03-07T23:05:22.00 10.0 undecidable manual PG 212 0.7992 -2.04 0.1
--.ARV.Z. 1986-03-07T23:05:13.30 10.0 undecidable manual PG 220 0.3219 -1.34 0.5
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