Earthquake with magnitude of Md 2.0 on date 01-05-1987 and time 04:26:08 (Italy) in region 1 km W Pioraco (MC)

A magnitude Md 2.0 earthquake occured in region: 1 km W Pioraco (MC), on

  • 01-05-1987 02:26:08 (UTC)
  • 01-05-1987 04:26:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.18, 12.98 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
Pioraco MC 1 1134 1134
Fiuminata MC 4 1402 2536
Sefro MC 5 422 2958
Castelraimondo MC 7 4587 7545
Esanatoglia MC 8 2034 9579
Matelica MC 9 9981 19560
Camerino MC 9 6974 26534
Gagliole MC 10 620 27154
Serravalle di Chienti MC 13 1070 28224
Muccia MC 13 915 29139
Cerreto d'Esi AN 15 3817 32956
Pievebovigliana MC 16 866 33822
Gualdo Tadino PG 16 15208 49030
Pieve Torina MC 17 1458 50488
Nocera Umbra PG 17 5839 56327
San Severino Marche MC 17 12726 69053
Serrapetrona MC 18 966 70019
Fabriano AN 18 31480 101499
Fiordimonte MC 19 202 101701

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km NE of Foligno (57155 inhabitants)
48 Km E of Perugia (166134 inhabitants)
65 Km SW of Ancona (100861 inhabitants)
74 Km S of Fano (60888 inhabitants)
74 Km NE of Terni (111501 inhabitants)
81 Km S of Pesaro (94582 inhabitants)
83 Km NW of Teramo (54892 inhabitants)
94 Km E of Arezzo (99543 inhabitants)
99 Km NW 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
Bulletin
Rev1000
Md 2.0 1987-05-01
02:26:08
43.18 12.98 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 46019
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-05-01 02:26:08 ± 0.066
Latitude 43.18 ± 0.01
Longitude 12.98 ± 0.00
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 46019

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) 859.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 157
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00105
Epicentral distance of station farthest from the epicenter (degree) 0.00283
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 2
Type of magnitude Md
Reference to an origin 46019
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:45:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ARV.Z. 1987-05-01T02:26:20.80 10.0 undecidable manual SG 356 0.0028 0.25 0.3
--.ASS.Z. 1987-05-01T02:26:19.00 10.0 undecidable manual SG 242 0.0023 0.08 0.8
--.ARV.Z. 1987-05-01T02:26:15.20 10.0 undecidable manual PG 356 0.0028 -0.26 0.4
--.CM8.Z. 1987-05-01T02:26:14.51 10.0 undecidable manual SG 85 0.0011 0.12 1
--.ASS.Z. 1987-05-01T02:26:14.50 10.0 undecidable manual PG 242 0.0023 -0.02 1.8
--.CM8.Z. 1987-05-01T02:26:11.84 10.0 undecidable manual PG 85 0.0011 -0.07 1.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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