Earthquake with magnitude of Md 2.6 on date 20-03-1987 and time 00:33:38 (Italy) in region 8 km SE Ferriere (PC)

A magnitude Md 2.6 earthquake occured in region: 8 km SE Ferriere (PC), on

  • 19-03-1987 23:33:38 (UTC)
  • 20-03-1987 00:33:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.6, 9.58 at 1 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
Ferriere PC 8 1294 1294
Bedonia PR 11 3482 4776
Santo Stefano d'Aveto GE 12 1126 5902
Bardi PR 13 2227 8129
Farini PC 13 1290 9419
Tornolo PR 13 1010 10429
Compiano PR 13 1112 11541
Morfasso PC 17 1024 12565
Rezzoaglio GE 17 995 13560
Borgo Val di Taro PR 19 6999 20559
Albareto PR 19 2156 22715
Ottone PC 20 516 23231
Bettola PC 20 2828 26059

Municipalities with at least 50000 inhabitants

An earthquake occurred to
51 Km S of Piacenza (102191 inhabitants)
55 Km E of Genova (586655 inhabitants)
58 Km NW of La Spezia (93959 inhabitants)
63 Km W of Parma (192836 inhabitants)
69 Km SW of Cremona (71901 inhabitants)
71 Km NW of Carrara (63133 inhabitants)
73 Km SE of Pavia (72576 inhabitants)
77 Km NW of Massa (69479 inhabitants)
84 Km E of Alessandria (93943 inhabitants)
84 Km W of Reggio nell'Emilia (171345 inhabitants)
93 Km E of Savona (61345 inhabitants)
97 Km NW of Viareggio (62467 inhabitants)
98 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 1987-03-19
23:33:38
44.6 9.58 1 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 43219
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-03-19 23:33:38 ± 0.205
Latitude 44.60 ± 0.01
Longitude 9.58 ± 0.01
Depth (km) 1 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 43219

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) 1454.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 99
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.0017
Epicentral distance of station farthest from the epicenter (degree) 0.02696
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitude information

Md:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 43219
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:42:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CTI.Z. 1987-03-19T23:34:39.50 10.0 undecidable manual SN 44 0.0185 -0.43 0.5
--.CRE.Z. 1987-03-19T23:34:37.00 10.0 undecidable manual SN 119 0.0176 -0.77 0.3
--.FOI.Z. 1987-03-19T23:34:27.00 10.0 undecidable manual PN 47 0.027 0.14 1.1
--.ORO.Z. 1987-03-19T23:34:27.50 10.0 undecidable manual SN 313 0.0137 0.09 0.7
--.IMP.Z. 1987-03-19T23:34:23.30 10.0 undecidable manual SN 241 0.0125 -0.8 0.2
--.MDI.Z. 1987-03-19T23:34:19.50 10.0 undecidable manual SN 4 0.0106 0.28 1
--.PS9.Z. 1987-03-19T23:34:17.50 10.0 undecidable manual SG 142 0.01 0.09 0.8
--.FIN.Z. 1987-03-19T23:34:14.80 10.0 undecidable manual SG 248 0.0095 -0.91 0.1
--.CRE.Z. 1987-03-19T23:34:13.00 10.0 undecidable manual PN 119 0.0176 0.35 1.2
--.CTI.Z. 1987-03-19T23:34:13.00 10.0 undecidable manual PN 44 0.0185 -0.89 0.6
--.BDI.Z. 1987-03-19T23:34:11.00 10.0 undecidable manual SG 126 0.0081 0.16 0.7
--.DA9.Z. 1987-03-19T23:34:10.00 10.0 undecidable manual PN 267 0.015 1.42 0.1
--.ORO.Z. 1987-03-19T23:34:07.50 10.0 undecidable manual PN 313 0.0137 0.84 0.7
--.VAI.Z. 1987-03-19T23:34:05.00 10.0 undecidable manual PN 336 0.0125 0.21 1.8
--.IMP.Z. 1987-03-19T23:34:04.50 10.0 undecidable manual PN 241 0.0125 -0.24 1.6
--.MDI.Z. 1987-03-19T23:34:01.50 10.0 undecidable manual PN 4 0.0106 -0.43 1.6
--.PS9.Z. 1987-03-19T23:34:01.00 10.0 undecidable manual PG 142 0.01 0.12 2
--.FIN.Z. 1987-03-19T23:33:59.40 10.0 undecidable manual PG 248 0.0095 -0.5 1.2
--.BDI.Z. 1987-03-19T23:33:57.50 10.0 undecidable manual PG 126 0.0081 0.41 1.5
--.VEA.Z. 1987-03-19T23:33:49.30 10.0 undecidable manual SG 5 0.0026 -0.27 0.8
--.CO9.Z. 1987-03-19T23:33:46.00 10.0 undecidable manual SG 331 0.0017 0.24 1.1
--.VEA.Z. 1987-03-19T23:33:43.90 10.0 undecidable manual PG 5 0.0026 -0.91 0.7
--.CO9.Z. 1987-03-19T23:33:43.00 10.0 undecidable manual PG 331 0.0017 0.39 1.6
--.BVT.Z. 1987-03-19T23:33:42.80 10.0 undecidable manual PG 126 0.0019 -0.16 2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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