Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 3.1 on date 18-02-1989 and time 23:16:37 (Italy) in region 1 km W Mondolfo (PU)

A magnitude Md 3.1 earthquake occured in region: 1 km W Mondolfo (PU), on

  • 18-02-1989 22:16:37 (UTC)
  • 18-02-1989 23:16:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.7530, 13.0880 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
Mondolfo PU 1 14277 14277
San Costanzo PU 2 4786 19063
Monte Porzio PU 8 2836 21899
Trecastelli AN 9 7625 29524
San Giorgio di Pesaro PU 10 1388 30912
Piagge PU 10 1022 31934
Senigallia AN 11 45027 76961
Montemaggiore al Metauro PU 12 2893 79854
Fano PU 12 60888 140742
Corinaldo AN 12 4998 145740
Orciano di Pesaro PU 12 2028 147768
Mondavio PU 13 3810 151578
Saltara PU 15 6925 158503
Barchi PU 16 967 159470
Cartoceto PU 16 7887 167357
Ostra AN 17 6875 174232
Ostra Vetere AN 17 3311 177543
Serrungarina PU 17 2634 180177
Castelleone di Suasa AN 18 1676 181853
Sant'Ippolito PU 19 1563 183416
Mombaroccio PU 19 2152 185568
Morro d'Alba AN 20 1903 187471
Barbara AN 20 1368 188839

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km SE of Fano (60888 inhabitants)
22 Km SE of Pesaro (94582 inhabitants)
38 Km W of Ancona (100861 inhabitants)
54 Km SE of Rimini (147750 inhabitants)
80 Km SE of Cesena (96758 inhabitants)
91 Km NE of Perugia (166134 inhabitants)
94 Km NE of Foligno (57155 inhabitants)
99 Km SE of Forlì (117913 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 3.1
ML-VAX 2.2 		1989-02-18
22:16:37		 43.753 13.088 5 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 87279
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-02-18 22:16:37 ± 0.159
Latitude 43.7530 ± 0.0094
Longitude 13.0880 ± 0.0143
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 87279

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) 1550.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 95
Number of associated phases, regardless of their use for origin computation 40
Number of defining phases 40
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) 0.00243
Epicentral distance of station farthest from the epicenter (degree) 0.02558
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 25
Magnitudes information

Md:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations 6
Type of magnitude Md
Reference to an origin 87279
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:21:55

ML:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 9
Type of magnitude ML
Reference to an origin 87279
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.LJU.Z. 1989-02-18T22:17:48.80 10.0 undecidable manual SN 23 2.4975 0.34 0.5
--.CTI.Z. 1989-02-18T22:17:47.86 10.0 undecidable manual SN 336 2.4975 -0.67 0.4
--.VOY.Z. 1989-02-18T22:17:45.90 10.0 undecidable manual SN 13 2.331 1.2 0.2
--.AQU.Z. 1989-02-18T22:17:24.60 10.0 undecidable manual SN 170 1.4097 1.48 0.1
--.FVI.Z. 1989-02-18T22:17:23.42 10.0 undecidable manual PN 355 2.8416 0.46 1
--.BOB.Z. 1989-02-18T22:17:22.30 10.0 undecidable manual PN 292 2.7861 0.04 1.2
--.MNS.Z. 1989-02-18T22:17:21.97 10.0 undecidable manual SN 192 1.3875 -0.2 0.7
--.LJU.Z. 1989-02-18T22:17:20.50 10.0 undecidable manual PN 23 2.4975 2.23 0
--.RBL.Z. 1989-02-18T22:17:20.20 10.0 undecidable manual PN 6 2.7084 -0.84 0.7
--.CTI.Z. 1989-02-18T22:17:18.50 10.0 undecidable manual PN 336 2.4975 0.18 1.2
--.FG2.Z. 1989-02-18T22:17:17.48 10.0 undecidable manual PN 141 2.4642 -0.31 1.2
--.VOY.Z. 1989-02-18T22:17:16.40 10.0 undecidable manual PN 13 2.331 0.3 1.2
--.ALP.Z. 1989-02-18T22:17:14.90 10.0 undecidable manual SG 160 1.0212 1.83 0.1
--.SDI.Z. 1989-02-18T22:17:13.86 10.0 undecidable manual PN 165 2.0979 1.01 0.7
--.RDP.Z. 1989-02-18T22:17:12.00 10.0 undecidable manual PN 187 2.0091 0.5 1.2
--.PGD.Z. 1989-02-18T22:17:11.50 10.0 undecidable manual SG 277 0.9879 -0.3 0.7
--.PII.Z. 1989-02-18T22:17:10.38 10.0 undecidable manual PN 269 1.8426 1.08 0.6
--.CP9.Z. 1989-02-18T22:17:10.70 10.0 undecidable manual PN 182 1.887 0.84 0.9
--.TRI.Z. 1989-02-18T22:17:10.66 10.0 undecidable manual PN 13 2.0091 -0.84 0.8
--.BDI.Z. 1989-02-18T22:17:09.61 10.0 undecidable manual PN 280 1.8204 0.74 1
--.SFI.Z. 1989-02-18T22:17:09.94 10.0 undecidable manual SG 279 0.8991 0.91 0.4
--.CRE.Z. 1989-02-18T22:17:06.50 10.0 undecidable manual SG 261 0.8214 -0.15 0.7
--.AQU.Z. 1989-02-18T22:17:04.32 10.0 undecidable manual PN 170 1.4097 0.98 0.8
--.ASS.Z. 1989-02-18T22:17:04.50 10.0 undecidable manual SG 204 0.7548 0.2 1
--.MNS.Z. 1989-02-18T22:17:03.25 10.0 undecidable manual PN 192 1.3875 0.16 1.7
--.CM8.Z. 1989-02-18T22:16:58.10 10.0 undecidable manual SG 175 0.555 0.23 1
--.MC8.Z. 1989-02-18T22:16:57.30 10.0 undecidable manual SG 152 0.5106 0.74 0.5
--.PGD.Z. 1989-02-18T22:16:56.80 10.0 undecidable manual PG 277 0.9879 -1.03 0.8
--.ALP.Z. 1989-02-18T22:16:56.90 10.0 undecidable manual PG 160 1.0212 -0.95 1.8
--.RSM.Z. 1989-02-18T22:16:55.25 10.0 undecidable manual SG 291 0.4884 -0.44 0.6
--.SFI.Z. 1989-02-18T22:16:54.79 10.0 undecidable manual PG 279 0.8991 -0.72 1.2
--.CRE.Z. 1989-02-18T22:16:53.50 10.0 undecidable manual PG 261 0.8214 -0.63 1.3
--.AM8.Z. 1989-02-18T22:16:53.10 10.0 undecidable manual SG 118 0.4218 -0.34 1
--.ASS.Z. 1989-02-18T22:16:52.50 10.0 undecidable manual PG 204 0.7548 -0.27 1.7
--.CM8.Z. 1989-02-18T22:16:48.10 10.0 undecidable manual PG 175 0.555 -0.97 1.7
--.MC8.Z. 1989-02-18T22:16:47.50 10.0 undecidable manual PG? 152 0.5106 -0.8 0.4
--.ARV.Z. 1989-02-18T22:16:47.82 10.0 undecidable manual SG 202 0.2664 0.05 0.7
--.RSM.Z. 1989-02-18T22:16:47.51 10.0 negative manual PG 291 0.4884 -0.3 3.3
--.AM8.Z. 1989-02-18T22:16:45.50 10.0 undecidable manual PG 118 0.4218 -1.01 1.6
--.ARV.Z. 1989-02-18T22:16:43.41 10.0 negative manual PG 202 0.2664 0.17 3.4
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