Earthquake with magnitude of Md 2.1 on date 07-06-1985 and time 12:41:42 (UTC) in region 3 km E Appignano (MC)

A magnitude Md 2.1 earthquake occured in region: 3 km E Appignano (MC), on

  • 07-06-1985 12:41:42 (UTC)
  • 07-06-1985 14:41:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.36, 13.38 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
Appignano MC 3 4213 4213
Montecassiano MC 5 7125 11338
Treia MC 7 9403 20741
Montefano MC 8 3541 24282
Macerata MC 8 42473 66755
Filottrano AN 9 9499 76254
Pollenza MC 10 6618 82872
Cingoli MC 14 10352 93224
Recanati MC 15 21349 114573
Montelupone MC 15 3596 118169
Corridonia MC 16 15430 133599
Petriolo MC 16 1998 135597
Morrovalle MC 17 10195 145792
Santa Maria Nuova AN 17 4179 149971
Osimo AN 17 34977 184948
Urbisaglia MC 18 2628 187576
Tolentino MC 18 20069 207645
Castelfidardo AN 18 18733 226378
Staffolo AN 18 2253 228631
Polverigi AN 19 4508 233139
Potenza Picena MC 19 15936 249075
Offagna AN 20 1935 251010

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km SW of Ancona (100861 inhabitants)
62 Km SE of Fano (60888 inhabitants)
71 Km NE of Foligno (57155 inhabitants)
72 Km SE of Pesaro (94582 inhabitants)
82 Km NW of Teramo (54892 inhabitants)
85 Km E of Perugia (166134 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 2.1 1985-06-07
12:41:42
43.36 13.38 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 8159
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-06-07 12:41:42 ± 0.811
Latitude 43.36 ± 0.02
Longitude 13.38 ± 0.06
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 8159

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) 5350.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 292
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.0021
Epicentral distance of station farthest from the epicenter (degree) 0.00542
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:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 8159
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:12:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.AS1.Z. 1985-06-07T12:42:04.50 10.0 undecidable manual SG 241 0.0054 0.67 0.2
--.AR1.Z. 1985-06-07T12:41:55.00 10.0 undecidable manual SG 294 0.0031 -0.58 0.3
--.AS1.Z. 1985-06-07T12:41:54.00 10.0 undecidable manual PG 241 0.0054 -0.78 0.3
--.CM2.Z. 1985-06-07T12:41:51.90 10.0 undecidable manual SG 227 0.0021 -0.11 1
--.AR1.Z. 1985-06-07T12:41:50.50 10.0 undecidable manual PG 294 0.0031 0.48 1
--.CM2.Z. 1985-06-07T12:41:47.90 10.0 undecidable manual PG 227 0.0021 -0.06 3.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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