Earthquake with magnitude of M 2.0 on date 30-12-1988 and time 12:45:48 (Italy) in region Costa Ligure Occidentale (Imperia)

A magnitude M 2.0 earthquake occured in region: Costa Ligure Occidentale (Imperia), on

  • 30-12-1988 11:45:48 (UTC)
  • 30-12-1988 12:45:48 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.69, 7.7 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
Bordighera IM 11 10469 10469
Ospedaletti IM 13 3367 13836
Vallecrosia IM 13 6956 20792
Ventimiglia IM 14 24310 45102
Vallebona IM 14 1310 46412
San Biagio della Cima IM 15 1329 47741
Seborga IM 16 315 48056
Camporosso IM 16 5632 53688
Soldano IM 16 977 54665
Sanremo IM 16 54807 109472
Dolceacqua IM 19 2074 111546
Perinaldo IM 20 870 112416

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km SW of Sanremo (54807 inhabitants)
80 Km S of Cuneo (56081 inhabitants)
93 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
Rev 1000 M 2.0 1988-12-30
11:45:48
43.69 7.71 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 84359
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-12-30 11:45:48 ± 0.333
Latitude 43.69 ± 0.02
Longitude 7.71 ± 0.01
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 84359

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) 2068.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 297
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
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) 0.00227
Epicentral distance of station farthest from the epicenter (degree) 0.00826
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

M:2

Field Value
Value 2
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 84359
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:48:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.PZZ.Z. 1988-12-30T11:46:19.70 10.0 undecidable manual SG 332 0.0083 0.12 0.6
--.ROB.Z. 1988-12-30T11:46:10.00 10.0 undecidable manual SG 11 0.0056 0.01 0.9
--.FIN.Z. 1988-12-30T11:46:09.70 10.0 undecidable manual SG 34 0.0057 -0.56 0.1
--.STV.Z. 1988-12-30T11:46:09.90 10.0 undecidable manual SG 334 0.0056 -0.05 0.9
--.PZZ.Z. 1988-12-30T11:46:06.40 10.0 undecidable manual PG 332 0.0083 0.17 1.5
--.STV.Z. 1988-12-30T11:46:00.40 10.0 undecidable manual PG 334 0.0056 -0.27 1.3
--.FIN.Z. 1988-12-30T11:46:00.60 10.0 undecidable manual PG 34 0.0057 -0.25 1.4
--.ROB.Z. 1988-12-30T11:46:00.70 10.0 undecidable manual PG 11 0.0056 0 2.2
--.IMI.Z. 1988-12-30T11:45:58.70 10.0 undecidable manual SG 31 0.0023 0.42 0.3
--.IMI.Z. 1988-12-30T11:45:54.30 10.0 undecidable manual PG 31 0.0023 0.37 0.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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