Earthquake with magnitude of Md 2.6 on date 17-02-1987 and time 19:31:47 (Italy) in region 8 km W Bardi (PR)

A magnitude Md 2.6 earthquake occured in region: 8 km W Bardi (PR), on

  • 17-02-1987 18:31:47 (UTC)
  • 17-02-1987 19:31:47 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.62, 9.64 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
Bardi PR 8 2227 2227
Ferriere PC 12 1294 3521
Bedonia PR 12 3482 7003
Farini PC 12 1290 8293
Morfasso PC 13 1024 9317
Compiano PR 13 1112 10429
Tornolo PR 14 1010 11439
Santo Stefano d'Aveto GE 17 1126 12565
Bore PR 17 749 13314
Varsi PR 17 1230 14544
Borgo Val di Taro PR 17 6999 21543
Bettola PC 18 2828 24371
Albareto PR 19 2156 26527

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 Km S of Piacenza (102191 inhabitants)
58 Km W of Parma (192836 inhabitants)
58 Km N of La Spezia (93959 inhabitants)
60 Km E of Genova (586655 inhabitants)
65 Km SW of Cremona (71901 inhabitants)
70 Km NW of Carrara (63133 inhabitants)
74 Km SE of Pavia (72576 inhabitants)
76 Km NW of Massa (69479 inhabitants)
79 Km W of Reggio nell'Emilia (171345 inhabitants)
87 Km E of Alessandria (93943 inhabitants)
96 Km NW of Viareggio (62467 inhabitants)
98 Km E of Savona (61345 inhabitants)
99 Km SE of Vigevano (63310 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 2.6
M 2.8
1987-02-17
18:31:47
44.62 9.64 0 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 41609
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-02-17 18:31:47 ± 0.436
Latitude 44.62 ± 0.02
Longitude 9.64 ± 0.02
Depth (km) 0 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 41609

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) 2608.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 97
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 32
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) 0.00243
Epicentral distance of station farthest from the epicenter (degree) 0.01837
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitudes information

Md:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 6
Type of magnitude Md
Reference to an origin 41609
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:41:23

M:2.8

Field Value
Value 2.8
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 41609
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
--.RRL.Z. 1987-02-17T18:32:51.90 10.0 undecidable manual SN 279 0.0184 2.01 0.1
--.RSP.Z. 1987-02-17T18:32:44.80 10.0 undecidable manual SN 288 0.0159 1.53 0.2
--.SOO.Z. 1987-02-17T18:32:44.50 10.0 undecidable manual SN 267 0.0163 0.27 0.6
--.DA9.Z. 1987-02-17T18:32:42.00 10.0 undecidable manual SN 267 0.0154 0.2 0.6
--.STV.Z. 1987-02-17T18:32:39.70 10.0 undecidable manual SN 258 0.0151 -1.6 0.2
--.ORX.Z. 1987-02-17T18:32:36.30 10.0 undecidable manual SN 311 0.0139 -1.71 0.2
--.SAL.Z. 1987-02-17T18:32:29.00 10.0 undecidable manual SN 31 0.0105 -0.02 0.8
--.MDI.Z. 1987-02-17T18:32:28.50 10.0 undecidable manual SN 2 0.0104 -0.3 0.7
--.PS9.Z. 1987-02-17T18:32:25.00 10.0 undecidable manual SG 144 0.0098 -1.92 0.2
--.RRL.Z. 1987-02-17T18:32:24.10 10.0 undecidable manual PN 279 0.0184 0.37 1.4
--.CKI.Z. 1987-02-17T18:32:23.00 10.0 undecidable manual SG 259 0.0089 -0.57 0.6
--.CTI.Z. 1987-02-17T18:32:23.50 10.0 undecidable manual PN 43 0.0181 0.3 1.4
--.LSD.Z. 1987-02-17T18:32:22.30 10.0 undecidable manual PN 296 0.0175 -0.02 1.5
--.DA9.Z. 1987-02-17T18:32:21.00 10.0 undecidable manual PN 267 0.0154 1.95 0.2
--.BDI.Z. 1987-02-17T18:32:21.50 10.0 undecidable manual SG 128 0.0079 1.52 0.2
--.SOO.Z. 1987-02-17T18:32:21.10 10.0 undecidable manual PN 267 0.0163 0.64 1.3
--.STV.Z. 1987-02-17T18:32:19.30 10.0 undecidable manual PN 258 0.0151 0.52 1.4
--.RSP.Z. 1987-02-17T18:32:19.60 10.0 undecidable manual PN 288 0.0159 -0.3 1.5
--.ORX.Z. 1987-02-17T18:32:17.40 10.0 undecidable manual PN 311 0.0139 0.52 1.5
--.VAI.Z. 1987-02-17T18:32:15.20 10.0 undecidable manual PN 334 0.0125 0.49 1.6
--.IMP.Z. 1987-02-17T18:32:14.20 10.0 undecidable manual PN 241 0.0129 -1.05 1
--.ROB.Z. 1987-02-17T18:32:12.10 10.0 undecidable manual PN 256 0.0117 -1.32 0.8
--.SAL.Z. 1987-02-17T18:32:11.50 10.0 undecidable manual PN 31 0.0105 -0.18 1.9
--.MDI.Z. 1987-02-17T18:32:11.50 10.0 undecidable manual PN 2 0.0104 -0.05 1.9
--.PS9.Z. 1987-02-17T18:32:09.50 10.0 undecidable manual PG 144 0.0098 -0.97 1.2
--.CKI.Z. 1987-02-17T18:32:09.00 10.0 undecidable manual PG 259 0.0089 0.47 1.7
--.FIN.Z. 1987-02-17T18:32:09.20 10.0 undecidable manual PG 248 0.0099 -1.37 0.7
--.BDI.Z. 1987-02-17T18:32:08.50 10.0 undecidable manual PG 128 0.0079 2.04 0.2
--.GEN.Z. 1987-02-17T18:32:08.50 10.0 undecidable manual SG 248 0.0048 -0.19 0.7
--.GEN.Z. 1987-02-17T18:32:00.30 10.0 undecidable manual PG 248 0.0048 0.36 1.8
--.VEA.Z. 1987-02-17T18:31:58.70 10.0 undecidable manual SG 356 0.0024 0.13 1.1
--.VEA.Z. 1987-02-17T18:31:53.30 10.0 positive manual PG 356 0.0024 -0.8 2.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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Type Description Link
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