Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.5 on date 29-06-1989 and time 04:18:45 (UTC) in region Costa Ligure Occidentale (Imperia)

A magnitude Md 2.5 earthquake occured in region: Costa Ligure Occidentale (Imperia), on

  • 29-06-1989 04:18:45 (UTC)
  • 29-06-1989 06:18:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.6550, 7.6550 at 10 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
Bordighera IM 14 10469 10469
Vallecrosia IM 16 6956 17425
Ventimiglia IM 16 24310 41735
Ospedaletti IM 17 3367 45102
Vallebona IM 18 1310 46412
Camporosso IM 18 5632 52044
San Biagio della Cima IM 18 1329 53373
Soldano IM 19 977 54350
Seborga IM 19 315 54665

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km SW of Sanremo (54807 inhabitants)
83 Km S of Cuneo (56081 inhabitants)
98 Km SW of Savona (61345 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 2.5
ML-VAX 2.2 		1989-06-29
04:18:45		 43.655 7.655 10 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 94139
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-06-29 04:18:45 ± 0.363
Latitude 43.6550 ± 0.0208
Longitude 7.6550 ± 0.0278
Depth (km) 10 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 94139

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) 3222.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00235
Epicentral distance of station farthest from the epicenter (degree) 0.01651
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 94139
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:28:11

ML:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 94139
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
--.BNI.Z. 1989-06-29T04:19:34.00 10.0 undecidable manual SN 333 1.554 1.34 0.2
--.LSD.Z. 1989-06-29T04:19:16.96 10.0 undecidable manual PN 349 1.8315 0.63 1
--.LRG.Z. 1989-06-29T04:19:16.60 10.0 undecidable manual SG 258 0.9546 -1.19 0.3
--.CKI.Z. 1989-06-29T04:19:15.47 10.0 undecidable manual SG 30 0.8769 0.03 0.8
--.DOI.Z. 1989-06-29T04:19:15.50 10.0 undecidable manual SG 341 0.888 -0.32 1.1
--.LMR.Z. 1989-06-29T04:19:13.60 10.0 undecidable manual SG 249 0.888 -1.98 0.1
--.BNI.Z. 1989-06-29T04:19:13.00 10.0 undecidable manual PN 333 1.554 0.45 1.2
--.RRL.Z. 1989-06-29T04:19:10.67 10.0 undecidable manual PN 334 1.3986 0.2 1.5
--.CVF.Z. 1989-06-29T04:19:10.00 10.0 undecidable manual PN 140 1.3875 -0.36 1.4
--.FRF.Z. 1989-06-29T04:19:09.80 10.0 undecidable manual SG 263 0.7326 -1.53 0.2
--.DOI.Z. 1989-06-29T04:19:04.00 10.0 undecidable manual PG 341 0.888 1.18 0.8
--.ENR.Z. 1989-06-29T04:19:04.58 10.0 undecidable manual SG 343 0.5883 -1.53 0.2
--.LRG.Z. 1989-06-29T04:19:04.20 10.0 undecidable manual PG 258 0.9546 0.24 1.8
--.LMR.Z. 1989-06-29T04:19:02.80 10.0 undecidable manual PG 249 0.888 0.12 1.9
--.CKI.Z. 1989-06-29T04:19:01.65 10.0 undecidable manual PG 30 0.8769 -0.95 1.1
--.FRF.Z. 1989-06-29T04:19:00.50 10.0 undecidable manual PG 263 0.7326 0.68 1.4
--.FIN.Z. 1989-06-29T04:18:58.74 10.0 undecidable manual PG 35 0.6771 -0.07 1.9
--.ROB.Z. 1989-06-29T04:18:57.86 10.0 undecidable manual PG 13 0.666 -0.66 1.5
--.STV.Z. 1989-06-29T04:18:56.73 10.0 undecidable manual PG 338 0.6327 -1.33 0.6
--.ENR.Z. 1989-06-29T04:18:56.15 10.0 undecidable manual PG 343 0.5883 -1.07 0.9
--.SBF.Z. 1989-06-29T04:18:52.70 10.0 undecidable manual PG 322 0.2553 1.67 0.3
--.IMI.Z. 1989-06-29T04:18:51.84 10.0 undecidable manual PG 33 0.3108 -0.04 1.9
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download