Earthquake with magnitude of Md 3.1 on date 06-05-1989 and time 16:32:29 (Italy) in region 1 km W Colonna (RM)

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

  • 06-05-1989 14:32:29 (UTC)
  • 06-05-1989 16:32:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.8300, 12.7390 at 9 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
Colonna RM 1 4287 4287
Monte Porzio Catone RM 2 8693 12980
Monte Compatri RM 2 11978 24958
Rocca Priora RM 4 11962 36920
San Cesareo RM 5 15153 52073
Frascati RM 5 22087 74160
Grottaferrata RM 7 20327 94487
Zagarolo RM 8 17843 112330
Rocca di Papa RM 8 17034 129364
Gallicano nel Lazio RM 8 6334 135698
Marino RM 9 43026 178724
Castel Gandolfo RM 12 8997 187721
Ciampino RM 12 38412 226133
Nemi RM 12 1943 228076
Palestrina RM 13 21672 249748
Albano Laziale RM 13 41715 291463
Castel San Pietro Romano RM 13 902 292365
Labico RM 13 6379 298744
Ariccia RM 13 19407 318151
Lariano RM 14 13432 331583
Genzano di Roma RM 14 23970 355553
Poli RM 14 2418 357971
San Gregorio da Sassola RM 15 1619 359590
Casape RM 15 744 360334
Tivoli RM 16 56533 416867
Valmontone RM 16 15959 432826
Cave RM 16 11287 444113
Velletri RM 16 53303 497416
Lanuvio RM 17 13632 511048
Rocca di Cave RM 17 377 511425
Artena RM 18 14276 525701
Capranica Prenestina RM 18 351 526052
Guidonia Montecelio RM 19 88673 614725
Genazzano RM 19 6036 620761
Castel Madama RM 20 7399 628160

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km SW of Tivoli (56533 inhabitants)
16 Km N of Velletri (53303 inhabitants)
19 Km S of Guidonia Montecelio (88673 inhabitants)
22 Km E of Roma (2864731 inhabitants)
26 Km NE of Pomezia (62966 inhabitants)
27 Km N of Aprilia (73446 inhabitants)
42 Km E of Fiumicino (78395 inhabitants)
43 Km NW of Latina (125985 inhabitants)
43 Km N of Anzio (54211 inhabitants)
80 Km SW of L'Aquila (69753 inhabitants)
82 Km S of Terni (111501 inhabitants)
83 Km E of Civitavecchia (52991 inhabitants)
84 Km SE of Viterbo (67173 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 2.4
1989-05-06
14:32:29
41.83 12.739 9 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 91079
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-05-06 14:32:29 ± 0.103
Latitude 41.8300 ± 0.0094
Longitude 12.7390 ± 0.0099
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 91079

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) 1332.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00024
Epicentral distance of station farthest from the epicenter (degree) 0.01506
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

Md:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations 6
Type of magnitude Md
Reference to an origin 91079
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:25:26

ML:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 91079
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
--.ARV.Z. 1989-05-06T14:33:20.58 10.0 undecidable manual SN 5 1.6761 0.47 0.3
--.MAO.Z. 1989-05-06T14:33:11.31 10.0 undecidable manual SN 297 1.3098 -0.2 0.5
--.ASS.Z. 1989-05-06T14:33:09.87 10.0 undecidable manual SN 357 1.2321 0.26 0.5
--.RFI.Z. 1989-05-06T14:33:05.85 10.0 undecidable manual SN 119 1.0656 0.1 0.6
--.ARV.Z. 1989-05-06T14:32:59.43 10.0 undecidable manual PN 5 1.6761 0.67 0.4
--.SDI.Z. 1989-05-06T14:32:57.51 10.0 undecidable manual SG 98 0.7992 -0.06 0.8
--.AQU.Z. 1989-05-06T14:32:54.56 10.0 undecidable manual SG 42 0.7104 -0.16 0.7
--.MAO.Z. 1989-05-06T14:32:53.41 10.0 undecidable manual PN 297 1.3098 -0.39 1
--.ASS.Z. 1989-05-06T14:32:52.71 10.0 undecidable manual PN 357 1.2321 0.01 1.5
--.RFI.Z. 1989-05-06T14:32:50.79 10.0 undecidable manual PN 119 1.0656 0.32 1.3
--.MNS.Z. 1989-05-06T14:32:49.52 10.0 undecidable manual SG 355 0.5439 0 0.8
--.AQU.Z. 1989-05-06T14:32:44.40 10.0 undecidable manual PG 42 0.7104 0.3 1.6
--.SDI.Z. 1989-05-06T14:32:44.86 10.0 undecidable manual PG 98 0.7992 -0.89 0.3
--.MNS.Z. 1989-05-06T14:32:40.31 10.0 undecidable manual PG 355 0.5439 -0.79 0.4
--.CP9.Z. 1989-05-06T14:32:36.67 10.0 undecidable manual SG 78 0.1665 0.06 0.8
--.RDP.Z. 1989-05-06T14:32:33.00 10.0 undecidable manual SG 193 0.0666 -0.86 0.1
--.CP9.Z. 1989-05-06T14:32:33.99 10.0 undecidable manual PG 78 0.1665 0.34 1.4
--.RMP.Z. 1989-05-06T14:32:32.59 10.0 undecidable manual SG 235 0.0222 -0.45 0.7
--.RDP.Z. 1989-05-06T14:32:32.40 10.0 positive manual PG 193 0.0666 0.34 2.9
--.RMP.Z. 1989-05-06T14:32:31.78 10.0 positive manual PG 235 0.0222 0.2 3.5
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