Earthquake with magnitude of Md 2.0 on date 02-08-1987 and time 15:57:18 (Italy) in region 4 km E Ventasso (RE)

A magnitude Md 2.0 earthquake occured in region: 4 km E Ventasso (RE), on

  • 02-08-1987 13:57:18 (UTC)
  • 02-08-1987 15:57:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.3820, 10.3710 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
Ventasso RE 4 4295 4295
Castelnovo ne' Monti RE 7 10465 14760
Villa Minozzo RE 8 3750 18510
Vetto RE 12 1860 20370
Carpineti RE 14 4064 24434
Toano RE 15 4463 28897
Palanzano PR 15 1142 30039
Casina RE 18 4504 34543
Sillano Giuncugnano LU 18 1085 35628
Frassinoro MO 19 1926 37554
Monchio delle Corti PR 20 933 38487

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km NE of Carrara (63133 inhabitants)
41 Km SW of Reggio nell'Emilia (171345 inhabitants)
42 Km NE of Massa (69479 inhabitants)
47 Km S of Parma (192836 inhabitants)
53 Km NE of La Spezia (93959 inhabitants)
53 Km SW of Modena (184973 inhabitants)
58 Km N of Viareggio (62467 inhabitants)
61 Km SW of Carpi (70699 inhabitants)
61 Km N of Lucca (89046 inhabitants)
66 Km NW of Pistoia (90315 inhabitants)
74 Km N of Pisa (89158 inhabitants)
78 Km W of Bologna (386663 inhabitants)
80 Km NW of Prato (191150 inhabitants)
88 Km SE of Cremona (71901 inhabitants)
92 Km SE of Piacenza (102191 inhabitants)
92 Km N of Livorno (159219 inhabitants)
95 Km NW of Scandicci (50609 inhabitants)
98 Km NW of Firenze (382808 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 2.0 1987-08-02
13:57:18
44.382 10.371 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 53239
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-08-02 13:57:18 ± 0.709
Latitude 44.3820 ± 0.0565
Longitude 10.3710 ± 0.0787
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 53239

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) 8867.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 187
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.8
Epicentral distance of station closest to the epicenter (degree) 0.00267
Epicentral distance of station farthest from the epicenter (degree) 0.00680
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 53239
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:51:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.PS9.Z. 1987-08-02T13:57:42.00 10.0 undecidable manual SG 170 0.666 0.26 0.7
--.BDI.Z. 1987-08-02T13:57:34.50 10.0 undecidable manual SG 153 0.3552 2.75 0
--.CO9.Z. 1987-08-02T13:57:34.11 10.0 undecidable manual PG 300 0.7548 0.57 1.4
--.PS9.Z. 1987-08-02T13:57:30.70 10.0 undecidable manual PG 170 0.666 -1.14 1
--.MME.Z. 1987-08-02T13:57:30.50 10.0 undecidable manual SG 128 0.2997 0.58 0.7
--.BDI.Z. 1987-08-02T13:57:25.30 10.0 undecidable manual PG 153 0.3552 -0.77 1.6
--.MME.Z. 1987-08-02T13:57:24.60 10.0 undecidable manual PG 128 0.2997 -0.96 1.4
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