Earthquake with magnitude of Md 2.0 on date 02-06-1987 and time 15:02:05 (Italy) in region 5 km S Formello (RM)

A magnitude Md 2.0 earthquake occured in region: 5 km S Formello (RM), on

  • 02-06-1987 13:02:05 (UTC)
  • 02-06-1987 15:02:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.04, 12.42 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
Formello RM 5 12918 12918
Sacrofano RM 8 7740 20658
Riano RM 11 10466 31124
Castelnuovo di Porto RM 12 8630 39754
Campagnano di Roma RM 12 11571 51325
Anguillara Sabazia RM 14 19357 70682
Morlupo RM 14 8696 79378
Magliano Romano RM 14 1448 80826
Capena RM 15 10592 91418
Monterotondo RM 16 40830 132248
Roma RM 17 2864731 2996979
Fonte Nuova RM 17 32562 3029541
Mentana RM 18 22921 3052462
Mazzano Romano RM 19 3165 3055627
Trevignano Romano RM 20 5725 3061352
Monterosi VT 20 4448 3065800

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km NW of Roma (2864731 inhabitants)
26 Km W of Guidonia Montecelio (88673 inhabitants)
32 Km W of Tivoli (56533 inhabitants)
33 Km NE of Fiumicino (78395 inhabitants)
41 Km N of Pomezia (62966 inhabitants)
49 Km NW of Velletri (53303 inhabitants)
50 Km SE of Viterbo (67173 inhabitants)
52 Km E of Civitavecchia (52991 inhabitants)
53 Km NW of Aprilia (73446 inhabitants)
61 Km SW of Terni (111501 inhabitants)
68 Km N of Anzio (54211 inhabitants)
75 Km NW of Latina (125985 inhabitants)
88 Km W of L'Aquila (69753 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 2.0 1987-06-02
13:02:05
42.04 12.42 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 48599
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-06-02 13:02:05 ± 0.409
Latitude 42.04 ± 0.02
Longitude 12.42 ± 0.04
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 48599

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) 3538.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 332
Number of associated phases, regardless of their use for origin computation 5
Number of defining phases 5
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00275
Epicentral distance of station farthest from the epicenter (degree) 0.00389
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitude information

Md:2

Field Value
Value 2
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 48599
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:47:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.RDP.Z. 1987-06-02T13:02:19.00 10.0 undecidable manual SG 141 0.0032 -0.26 0.5
--.RMP.Z. 1987-06-02T13:02:18.00 10.0 undecidable manual SG 137 0.0028 0.25 0.5
--.CP9.Z. 1987-06-02T13:02:15.00 10.0 undecidable manual PG 113 0.0039 -0.08 1.6
--.RDP.Z. 1987-06-02T13:02:13.50 10.0 undecidable manual PG 141 0.0032 -0.14 1.5
--.RMP.Z. 1987-06-02T13:02:13.00 10.0 undecidable manual PG 137 0.0028 0.23 1
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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