Earthquake with magnitude of M 2.3 on date 10-11-1990 and time 07:23:18 (Italy) in region Costa Ligure Occidentale (Imperia)

A magnitude M 2.3 earthquake occured in region: Costa Ligure Occidentale (Imperia), on

  • 10-11-1990 06:23:18 (UTC)
  • 10-11-1990 07:23:18 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.6320, 7.5570 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Ventimiglia IM 18 24310 24310
Bordighera IM 19 10469 34779
Vallecrosia IM 19 6956 41735

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km SW of Sanremo (54807 inhabitants)
85 Km S of Cuneo (56081 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
M 2.3 1990-11-10
06:23:18
43.632 7.557 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 130129
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1990-11-10 06:23:18 ± 0.273
Latitude 43.6320 ± 0.0144
Longitude 7.5570 ± 0.0190
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 130129

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) 2216.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 209
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00219
Epicentral distance of station farthest from the epicenter (degree) 0.00834
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

M:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 130129
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:42:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.LRG.Z. 1990-11-10T06:23:48.39 10.0 undecidable manual SG 258 0.8769 -0.48 0.2
--.LMR.Z. 1990-11-10T06:23:45.50 10.0 undecidable manual SG 248 0.8103 -1.17 0
--.FRF.Z. 1990-11-10T06:23:41.60 10.0 undecidable manual SG 263 0.6549 -0.14 0.6
--.PZZ.Z. 1990-11-10T06:23:37.80 10.0 undecidable manual PG 339 0.9213 0.17 1.2
--.LRG.Z. 1990-11-10T06:23:36.20 10.0 undecidable manual PG 258 0.8769 0.14 1.3
--.LMR.Z. 1990-11-10T06:23:35.20 10.0 undecidable manual PG 248 0.8103 0.41 0.7
--.FIN.Z. 1990-11-10T06:23:33.18 10.0 undecidable manual PG 38 0.7326 -0.23 1.2
--.FRF.Z. 1990-11-10T06:23:32.30 10.0 undecidable manual PG 263 0.6549 0.36 0.9
--.ROB.Z. 1990-11-10T06:23:32.56 10.0 undecidable manual PG 18 0.6993 -0.19 1.4
--.STV.Z. 1990-11-10T06:23:31.44 10.0 undecidable manual PG 345 0.6327 -0.07 1.6
--.ENR.Z. 1990-11-10T06:23:30.77 10.0 undecidable manual PG 350 0.5883 -0.04 1.7
--.SBF.Z. 1990-11-10T06:23:28.39 10.0 undecidable manual SG 339 0.2442 0.01 0.7
--.SBF.Z. 1990-11-10T06:23:24.40 10.0 undecidable manual PG 339 0.2442 0.17 1.5
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