Earthquake with magnitude of Md 2.4 on date 06-02-1987 and time 12:53:21 (Italy) in region 4 km NW Bedonia (PR)

A magnitude Md 2.4 earthquake occured in region: 4 km NW Bedonia (PR), on

  • 06-02-1987 11:53:21 (UTC)
  • 06-02-1987 12:53:21 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.54, 9.6 at 0 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
Bedonia PR 5 3482 3482
Tornolo PR 6 1010 4492
Compiano PR 7 1112 5604
Santo Stefano d'Aveto GE 12 1126 6730
Albareto PR 13 2156 8886
Borgo Val di Taro PR 14 6999 15885
Ferriere PC 15 1294 17179
Bardi PR 15 2227 19406
Rezzoaglio GE 17 995 20401
Varese Ligure SP 18 2059 22460
Farini PC 20 1290 23750

Municipalities with at least 50000 inhabitants

An earthquake occurred to
51 Km NW of La Spezia (93959 inhabitants)
55 Km E of Genova (586655 inhabitants)
58 Km S of Piacenza (102191 inhabitants)
65 Km W of Parma (192836 inhabitants)
65 Km NW of Carrara (63133 inhabitants)
70 Km NW of Massa (69479 inhabitants)
74 Km SW of Cremona (71901 inhabitants)
80 Km SE of Pavia (72576 inhabitants)
83 Km W of Reggio nell'Emilia (171345 inhabitants)
88 Km E of Alessandria (93943 inhabitants)
91 Km NW of Viareggio (62467 inhabitants)
93 Km E 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 Md 2.4
M 2.5
1987-02-06
11:53:21
44.54 9.6 0 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 40699
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-02-06 11:53:21 ± 1.14
Latitude 44.54 ± 0.04
Longitude 9.60 ± 0.08
Depth (km) 0 ± 7 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 40699

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) 7593.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 250
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
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) 0.00227
Epicentral distance of station farthest from the epicenter (degree) 0.01506
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 40699
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:40:37

M:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 40699
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
--.STV.Z. 1987-02-06T11:54:13.00 10.0 undecidable manual SN 260 0.0148 -0.71 0.4
--.FIN.Z. 1987-02-06T11:53:56.80 10.0 undecidable manual SG 251 0.0094 -2.05 0
--.CKI.Z. 1987-02-06T11:53:55.00 10.0 undecidable manual SG 263 0.0085 -0.71 0.5
--.DA9.Z. 1987-02-06T11:53:53.00 10.0 undecidable manual PN 269 0.0151 0.97 0.7
--.STV.Z. 1987-02-06T11:53:52.00 10.0 undecidable manual PN 260 0.0148 0.4 1.2
--.FIN.Z. 1987-02-06T11:53:42.40 10.0 undecidable manual PG 251 0.0094 -0.62 1.4
--.CKI.Z. 1987-02-06T11:53:42.50 10.0 undecidable manual PG 263 0.0085 1.29 0.6
--.VEA.Z. 1987-02-06T11:53:34.60 10.0 undecidable manual SG 1 0.0031 -0.27 0.7
--.CO9.Z. 1987-02-06T11:53:32.00 10.0 undecidable manual SG 334 0.0023 0.88 0.7
--.VEA.Z. 1987-02-06T11:53:28.10 10.0 undecidable manual PG 1 0.0031 -1.07 0.9
--.CO9.Z. 1987-02-06T11:53:27.00 10.0 undecidable manual PG 334 0.0023 -0.01 3.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download