Earthquake with magnitude of Md 3.1 on date 09-08-1989 and time 00:41:37 (Italy) in region 2 km NE Aprilia (LT)

A magnitude Md 3.1 earthquake occured in region: 2 km NE Aprilia (LT), on

  • 08-08-1989 22:41:37 (UTC)
  • 09-08-1989 00:41:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.614, 12.664 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Aprilia LT 2 73446 73446
Lanuvio RM 8 13632 87078
Ardea RM 10 49183 136261
Genzano di Roma RM 11 23970 160231
Ariccia RM 12 19407 179638
Velletri RM 13 53303 232941
Nemi RM 13 1943 234884
Albano Laziale RM 13 41715 276599
Cisterna di Latina LT 14 36868 313467
Pomezia RM 15 62966 376433
Castel Gandolfo RM 15 8997 385430
Rocca di Papa RM 17 17034 402464
Nettuno RM 17 49167 451631
Marino RM 17 43026 494657
Anzio RM 19 54211 548868
Lariano RM 19 13432 562300
Grottaferrata RM 20 20327 582627

Municipalities with at least 50000 inhabitants

An earthquake occurred to
2 Km NE of Aprilia (73446 inhabitants)
13 Km SW of Velletri (53303 inhabitants)
15 Km E of Pomezia (62966 inhabitants)
19 Km N of Anzio (54211 inhabitants)
26 Km NW of Latina (125985 inhabitants)
35 Km SE of Roma (2864731 inhabitants)
40 Km E of Fiumicino (78395 inhabitants)
41 Km S of Tivoli (56533 inhabitants)
43 Km S of Guidonia Montecelio (88673 inhabitants)
90 Km SE of Civitavecchia (52991 inhabitants)
Recent and historical seismicity
Seismic hazard
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
1989-08-08
22:41:37
41.614 12.664 4 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 97099
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-08-08 22:41:37 ± 0.813
Latitude 41.6140 ± 0.0369
Longitude 12.6640 ± 0.0305
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 97099

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) 4829.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 222
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
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) 0.00178
Epicentral distance of station farthest from the epicenter (degree) 0.01846
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

Md:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 97099
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:30:49

ML:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 6
Type of magnitude ML
Reference to an origin 97099
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 Takeoff_angle Residual Weight
--.CM8.Z. 1989-08-08T22:42:30.20 10.0 undecidable manual SN 12 0.0146 1.7 0.2
--.ASS.Z. 1989-08-08T22:42:23.62 10.0 undecidable manual SN 359 0.013 -0.81 0.2
--.AM8.Z. 1989-08-08T22:42:14.50 10.0 undecidable manual PN? 19 0.0185 1.4 0.2
--.ARV.Z. 1989-08-08T22:42:12.16 10.0 undecidable manual PN 6 0.017 1.23 0.6
--.SDI.Z. 1989-08-08T22:42:08.50 10.0 undecidable manual SG 83 0.0077 -0.12 0.7
--.CM8.Z. 1989-08-08T22:42:06.50 10.0 undecidable manual PN? 12 0.0146 -0.64 0.3
--.ASS.Z. 1989-08-08T22:42:04.54 10.0 undecidable manual PN 359 0.013 -0.25 1.3
--.MNS.Z. 1989-08-08T22:42:04.50 10.0 undecidable manual SG 0 0.0069 -1.2 0.1
--.MAO.Z. 1989-08-08T22:42:03.57 10.0 undecidable manual PN 306 0.0124 -0.28 1.3
--.ALP.Z. 1989-08-08T22:42:03.40 10.0 undecidable manual PN? 29 0.0121 0.03 0.6
--.AZI.Z. 1989-08-08T22:42:02.00 10.0 undecidable manual SG 56 0.0062 -0.96 0.3
--.AQU.Z. 1989-08-08T22:41:58.11 10.0 positive manual PG 36 0.0083 1.35 1.2
--.SDI.Z. 1989-08-08T22:41:55.80 10.0 undecidable manual PG 83 0.0077 0.14 1.8
--.MNS.Z. 1989-08-08T22:41:53.52 10.0 undecidable manual PG 0 0.0069 -0.45 1.3
--.AZI.Z. 1989-08-08T22:41:51.61 10.0 undecidable manual PG 56 0.0062 -0.78 1
--.CP9.Z. 1989-08-08T22:41:49.70 10.0 undecidable manual SG 40 0.0029 -0.97 0.3
--.RMP.Z. 1989-08-08T22:41:46.95 10.0 undecidable manual SG 8 0.0018 1.19 0.3
--.CP9.Z. 1989-08-08T22:41:45.28 10.0 negative manual PG 40 0.0029 -0.02 3.6
--.RMP.Z. 1989-08-08T22:41:42.44 10.0 positive manual PG 8 0.0018 -0.03 3.6
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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