Earthquake with magnitude of Md 2.4 on date 05-07-1987 and time 12:10:17 (Italy) in region Costa Marchigiana Fermana (Fermo)

A magnitude Md 2.4 earthquake occured in region: Costa Marchigiana Fermana (Fermo), on

  • 05-07-1987 10:10:17 (UTC)
  • 05-07-1987 12:10:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.2020, 13.9330 at 5 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
Porto San Giorgio FM 11 16121 16121
Pedaso FM 14 2800 18921
Altidona FM 15 3390 22311
Porto Sant'Elpidio FM 16 26152 48463
Lapedona FM 17 1166 49629
Campofilone FM 17 1916 51545
Fermo FM 18 37655 89200
Massignano AP 20 1638 90838

Municipalities with at least 50000 inhabitants

An earthquake occurred to
57 Km SE of Ancona (100861 inhabitants)
63 Km NE of Teramo (54892 inhabitants)
78 Km N of Montesilvano (53738 inhabitants)
85 Km N of Pescara (121014 inhabitants)
96 Km N of Chieti (51815 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 2.4 1987-07-05
10:10:17
43.202 13.933 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 50609
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-07-05 10:10:17 ± 0.594
Latitude 43.2020 ± 0.0141
Longitude 13.9330 ± 0.0447
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 50609

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) 3944.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 247
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
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) 0.00372
Epicentral distance of station farthest from the epicenter (degree) 0.01101
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 50609
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:49:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ARV.Z. 1987-07-05T10:10:46.14 10.0 undecidable manual SG 292 0.777 0.59 0.4
--.MNS.Z. 1987-07-05T10:10:43.00 10.0 undecidable manual PN 228 1.221 1.57 0.1
--.CM8.Z. 1987-07-05T10:10:39.50 10.0 undecidable manual SG 269 0.5661 0.01 0.9
--.ALP.Z. 1987-07-05T10:10:37.80 10.0 undecidable manual SG 212 0.4995 0.47 0.7
--.ASS.Z. 1987-07-05T10:10:36.50 10.0 undecidable manual PG 261 0.9324 -0.38 1.1
--.AM8.Z. 1987-07-05T10:10:34.63 10.0 undecidable manual SG 325 0.4107 0.55 0.7
--.ARV.Z. 1987-07-05T10:10:33.55 10.0 undecidable manual PG 292 0.777 -0.23 1.3
--.CM8.Z. 1987-07-05T10:10:29.33 10.0 undecidable manual PG 269 0.5661 -0.7 0.9
--.ALP.Z. 1987-07-05T10:10:28.18 10.0 undecidable manual PG 212 0.4995 -0.44 2.5
--.AM8.Z. 1987-07-05T10:10:26.91 10.0 undecidable manual PG 325 0.4107 -0.25 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