Earthquake with magnitude of Md 3.4 on date 28-08-1989 and time 23:22:49 (UTC) in region 2 km SE San Cesareo (RM)

A magnitude Md 3.4 earthquake occured in region: 2 km SE San Cesareo (RM), on

  • 28-08-1989 23:22:49 (UTC)
  • 29-08-1989 01:22:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.8080, 12.8120 at 7 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
San Cesareo RM 2 15153 15153
Zagarolo RM 4 17843 32996
Rocca Priora RM 4 11962 44958
Colonna RM 6 4287 49245
Monte Compatri RM 6 11978 61223
Labico RM 7 6379 67602
Gallicano nel Lazio RM 7 6334 73936
Palestrina RM 7 21672 95608
Monte Porzio Catone RM 8 8693 104301
Castel San Pietro Romano RM 8 902 105203
Lariano RM 9 13432 118635
Valmontone RM 10 15959 134594
Rocca di Papa RM 10 17034 151628
Cave RM 10 11287 162915
Frascati RM 11 22087 185002
Poli RM 11 2418 187420
Artena RM 12 14276 201696
Rocca di Cave RM 12 377 202073
Grottaferrata RM 12 20327 222400
Nemi RM 13 1943 224343
Casape RM 13 744 225087
Capranica Prenestina RM 13 351 225438
Marino RM 13 43026 268464
San Gregorio da Sassola RM 13 1619 270083
Genazzano RM 14 6036 276119
Velletri RM 14 53303 329422
Castel Gandolfo RM 15 8997 338419
Genzano di Roma RM 15 23970 362389
Ariccia RM 15 19407 381796
Albano Laziale RM 15 41715 423511
Pisoniano RM 17 770 424281
San Vito Romano RM 17 3273 427554
Lanuvio RM 17 13632 441186
Rocca Massima LT 17 1136 442322
Tivoli RM 17 56533 498855
Ciampino RM 17 38412 537267
Colleferro RM 18 21595 558862
Castel Madama RM 19 7399 566261
Olevano Romano RM 19 6687 572948
Bellegra RM 20 2887 575835

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km N of Velletri (53303 inhabitants)
17 Km S of Tivoli (56533 inhabitants)
23 Km SE of Guidonia Montecelio (88673 inhabitants)
27 Km NE of Aprilia (73446 inhabitants)
29 Km E of Roma (2864731 inhabitants)
30 Km NE of Pomezia (62966 inhabitants)
39 Km N of Latina (125985 inhabitants)
43 Km NE of Anzio (54211 inhabitants)
48 Km E of Fiumicino (78395 inhabitants)
78 Km SW of L'Aquila (69753 inhabitants)
85 Km S of Terni (111501 inhabitants)
89 Km SE of Viterbo (67173 inhabitants)
90 Km E of Civitavecchia (52991 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
ML-VAX 3.4
1989-08-28
23:22:49
41.808 12.812 7 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 98469
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-08-28 23:22:49 ± 0.1
Latitude 41.8080 ± 0.0086
Longitude 12.8120 ± 0.0080
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 98469

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) 1159.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
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) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00073
Epicentral distance of station farthest from the epicenter (degree) 0.04954
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 28
Magnitudes information

Md:3.4

Field Value
Value 3.4
Uncertainty
Num. used stations 10
Type of magnitude Md
Reference to an origin 98469
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:32:01

ML:3.4

Field Value
Value 3.4
Uncertainty
Num. used stations 6
Type of magnitude ML
Reference to an origin 98469
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. 1989-08-28T23:24:48.00 10.0 undecidable manual SN 15 4.4067 2.3 0
--.CGL.Z. 1989-08-28T23:24:26.52 10.0 undecidable manual SN 228 3.6075 -0.36 0.3
--.BNI.Z. 1989-08-28T23:24:12.73 10.0 undecidable manual PN 308 5.4945 1.02 0.1
--.RBL.Z. 1989-08-28T23:24:00.00 10.0 undecidable manual PN 6 4.6509 -0.11 0.9
--.LJU.Z. 1989-08-28T23:23:57.00 10.0 undecidable manual PN 15 4.4067 0.35 0.7
--.CTI.Z. 1989-08-28T23:23:56.70 10.0 undecidable manual PN 349 4.3179 0.66 0.4
--.ROB.Z. 1989-08-28T23:23:55.90 10.0 undecidable manual PN 306 4.3734 -0.4 0.7
--.FIN.Z. 1989-08-28T23:23:53.50 10.0 undecidable manual PN 306 4.1292 0.67 0.4
--.PCP.Z. 1989-08-28T23:23:52.80 10.0 undecidable manual PN 312 4.1292 -0.13 0.9
--.CRE.Z. 1989-08-28T23:23:46.00 10.0 undecidable manual SN 340 1.9092 -0.45 0.4
--.CGL.Z. 1989-08-28T23:23:45.76 10.0 undecidable manual PN 228 3.6075 -0.02 1.1
--.BDI.Z. 1989-08-28T23:23:33.77 10.0 undecidable manual PN 324 2.7639 -0.44 0.8
--.MGR.Z. 1989-08-28T23:23:32.00 10.0 undecidable manual PN 127 2.6529 -0.62 0.6
--.SFI.Z. 1989-08-28T23:23:26.83 10.0 undecidable manual PN 341 2.1978 0.37 1.1
--.PGD.Z. 1989-08-28T23:23:26.43 10.0 undecidable manual PN 339 2.2089 -0.09 1.4
--.CRE.Z. 1989-08-28T23:23:22.14 10.0 undecidable manual PN 340 1.9092 -0.3 1.2
--.FG2.Z. 1989-08-28T23:23:20.90 10.0 undecidable manual PN 89 1.7427 0.76 0.5
--.ARV.Z. 1989-08-28T23:23:19.57 10.0 undecidable manual PN 3 1.6872 0.22 1.3
--.SDI.Z. 1989-08-28T23:23:16.50 10.0 undecidable manual SG 97 0.7437 0.33 0.5
--.MAO.Z. 1989-08-28T23:23:14.83 10.0 negative manual PN 296 1.3653 -0.12 2.9
--.CM8.Z. 1989-08-28T23:23:14.90 10.0 undecidable manual PN 9 1.3986 -0.54 1.6
--.DUI.Z. 1989-08-28T23:23:13.32 10.0 undecidable manual PN 96 1.2321 0.23 1.3
--.ASS.Z. 1989-08-28T23:23:13.00 10.0 undecidable manual PN 354 1.2543 -0.4 1.1
--.MNS.Z. 1989-08-28T23:23:11.00 10.0 undecidable manual SG 350 0.5772 0.17 0.6
--.ALP.Z. 1989-08-28T23:23:11.00 10.0 undecidable manual PN 29 1.11 -0.5 1.8
--.RFI.Z. 1989-08-28T23:23:10.31 10.0 undecidable manual PG 119 1.0101 0.49 0.9
--.AZI.Z. 1989-08-28T23:23:08.33 10.0 undecidable manual SG 68 0.4995 0.3 0.5
--.SDI.Z. 1989-08-28T23:23:04.57 10.0 negative manual PG 97 0.7437 -0.39 2.2
--.AQU.Z. 1989-08-28T23:23:03.32 10.0 undecidable manual PG 38 0.6882 -0.69 0.6
--.MNS.Z. 1989-08-28T23:23:02.90 10.0 undecidable manual PG 350 0.5772 0.22 1.3
--.AZI.Z. 1989-08-28T23:23:00.15 10.0 undecidable manual PG 68 0.4995 -0.11 1.4
--.RDP.Z. 1989-08-28T23:22:53.50 10.0 undecidable manual SG 234 0.0777 -0.33 0.5
--.CP9.Z. 1989-08-28T23:22:53.00 10.0 undecidable manual PG 62 0.1221 0.37 1.1
--.RMP.Z. 1989-08-28T23:22:53.50 10.0 undecidable manual SG 272 0.0777 -0.18 0.6
--.RDP.Z. 1989-08-28T23:22:52.50 10.0 negative manual PG 234 0.0777 0.45 2
--.RMP.Z. 1989-08-28T23:22:51.72 10.0 positive manual PG 272 0.0777 -0.25 2.6
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