Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.2 on date 30-05-1987 and time 01:20:02 (UTC) in region 9 km SE Ferriere (PC)

A magnitude Md 2.2 earthquake occured in region: 9 km SE Ferriere (PC), on

  • 30-05-1987 01:20:02 (UTC)
  • 30-05-1987 03:20:02 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.5840, 9.5800 at 4 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.

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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 10 1294 1294
Bedonia PR 10 3482 4776
Santo Stefano d'Aveto GE 11 1126 5902
Tornolo PR 12 1010 6912
Compiano PR 12 1112 8024
Bardi PR 13 2227 10251
Farini PC 15 1290 11541
Rezzoaglio GE 17 995 12536
Albareto PR 18 2156 14692
Borgo Val di Taro PR 18 6999 21691
Morfasso PC 18 1024 22715

Municipalities with at least 50000 inhabitants

An earthquake occurred to
53 Km S of Piacenza (102191 inhabitants)
55 Km E of Genova (586655 inhabitants)
57 Km NW of La Spezia (93959 inhabitants)
64 Km W of Parma (192836 inhabitants)
70 Km NW of Carrara (63133 inhabitants)
71 Km SW of Cremona (71901 inhabitants)
75 Km SE of Pavia (72576 inhabitants)
76 Km NW of Massa (69479 inhabitants)
84 Km W of Reggio nell'Emilia (171345 inhabitants)
85 Km E of Alessandria (93943 inhabitants)
92 Km E of Savona (61345 inhabitants)
96 Km NW of Viareggio (62467 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
Bulletin
Rev1000 		Md 2.2 1987-05-30
01:20:02		 44.584 9.58 4 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 48409
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-05-30 01:20:02 ± 0.272
Latitude 44.5840 ± 0.0165
Longitude 9.5800 ± 0.0208
Depth (km) 4 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 48409

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) 2467.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 117
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00178
Epicentral distance of station farthest from the epicenter (degree) 0.01238
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 48409
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:47:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.IMI.Z. 1987-05-30T01:20:46.00 10.0 undecidable manual SN 241 1.3764 -1.11 0.4
--.MDI.Z. 1987-05-30T01:20:43.50 10.0 undecidable manual SN 4 1.1988 0.82 0.5
--.PII.Z. 1987-05-30T01:20:39.00 10.0 undecidable manual SN 141 1.0878 -1.31 0.3
--.FIN.Z. 1987-05-30T01:20:37.20 10.0 undecidable manual SG 249 1.0434 -1.68 0.2
--.CKI.Z. 1987-05-30T01:20:34.50 10.0 undecidable manual SG 260 0.9324 -0.95 0.5
--.BDI.Z. 1987-05-30T01:20:33.00 10.0 undecidable manual SG 125 0.888 -0.94 0.5
--.IMI.Z. 1987-05-30T01:20:28.00 10.0 undecidable manual PN 241 1.3764 -0.15 1.6
--.MDI.Z. 1987-05-30T01:20:27.50 10.0 undecidable manual PN 4 1.1988 1.91 0.3
--.PII.Z. 1987-05-30T01:20:24.00 10.0 undecidable manual PN 141 1.0878 -0.22 1.8
--.FIN.Z. 1987-05-30T01:20:23.40 10.0 undecidable manual PG 249 1.0434 0 1.9
--.BDI.Z. 1987-05-30T01:20:22.00 10.0 undecidable manual PG 125 0.888 1.46 0.7
--.CKI.Z. 1987-05-30T01:20:21.50 10.0 undecidable manual PG 260 0.9324 0.08 2
--.GEN.Z. 1987-05-30T01:20:21.30 10.0 undecidable manual SG 250 0.4773 0.49 0.7
--.GEN.Z. 1987-05-30T01:20:14.40 10.0 undecidable manual PG 250 0.4773 1.44 0.7
--.VEA.Z. 1987-05-30T01:20:13.20 10.0 undecidable manual SG 5 0.3108 -0.95 0.3
--.BVT.Z. 1987-05-30T01:20:10.20 10.0 undecidable manual SG 123 0.1998 0.07 0.9
--.BOB.Z. 1987-05-30T01:20:10.00 10.0 undecidable manual SG 333 0.1998 -0.31 0.7
--.VEA.Z. 1987-05-30T01:20:08.60 10.0 undecidable manual PG 5 0.3108 -0.52 1.5
--.BOB.Z. 1987-05-30T01:20:07.00 10.0 undecidable manual PG 333 0.1998 0.1 2.2
--.BVT.Z. 1987-05-30T01:20:06.70 10.0 undecidable manual PG 123 0.1998 -0.09 2.2
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