Earthquake with magnitude of Md 2.5 on date 26-03-1985 and time 10:49:13 (UTC) in region 7 km SW Caldarola (MC)

A magnitude Md 2.5 earthquake occured in region: 7 km SW Caldarola (MC), on

  • 26-03-1985 10:49:13 (UTC)
  • 26-03-1985 11:49:13 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.1, 13.17 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
Caldarola MC 7 1823 1823
Fiastra MC 7 559 2382
Cessapalombo MC 8 512 2894
Acquacanina MC 8 121 3015
Pievebovigliana MC 8 866 3881
Camporotondo di Fiastrone MC 9 563 4444
Serrapetrona MC 9 966 5410
Camerino MC 9 6974 12384
Fiordimonte MC 9 202 12586
Belforte del Chienti MC 9 1886 14472
Muccia MC 10 915 15387
Pieve Torina MC 11 1458 16845
San Ginesio MC 12 3498 20343
Bolognola MC 13 142 20485
Sarnano MC 13 3264 23749
Gualdo MC 14 815 24564
San Severino Marche MC 15 12726 37290
Castelraimondo MC 15 4587 41877
Tolentino MC 16 20069 61946
Ripe San Ginesio MC 17 852 62798
Colmurano MC 17 1263 64061
Pioraco MC 17 1134 65195
Ussita MC 17 444 65639
Serravalle di Chienti MC 18 1070 66709
Gagliole MC 18 620 67329
Monte Cavallo MC 18 145 67474
Sefro MC 18 422 67896
Sant'Angelo in Pontano MC 19 1436 69332
Visso MC 20 1107 70439

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km E of Foligno (57155 inhabitants)
63 Km E of Perugia (166134 inhabitants)
64 Km SW of Ancona (100861 inhabitants)
66 Km NW of Teramo (54892 inhabitants)
73 Km NE of Terni (111501 inhabitants)
84 Km S of Fano (60888 inhabitants)
85 Km N of L'Aquila (69753 inhabitants)
93 Km S of Pesaro (94582 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 2.5 1985-03-26
10:49:13
43.1 13.17 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 3669
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-03-26 10:49:13 ± 0.612
Latitude 43.10 ± 0.02
Longitude 13.17 ± 0.05
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 3669

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) 4568.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 219
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) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00332
Epicentral distance of station farthest from the epicenter (degree) 0.00712
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:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 3669
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:08:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.PO9.Z. 1985-03-26T10:49:32.50 10.0 undecidable manual SG 197 0.0049 -0.5 0.4
--.MNS.Z. 1985-03-26T10:49:31.00 10.0 undecidable manual PG 206 0.0071 1.66 0.4
--.AS1.Z. 1985-03-26T10:49:27.50 10.0 undecidable manual SG 264 0.0033 0.01 0.9
--.PO9.Z. 1985-03-26T10:49:24.50 10.0 undecidable manual PG 197 0.0049 -0.24 1.5
--.AR1.Z. 1985-03-26T10:49:22.50 10.0 undecidable manual PG? 337 0.0039 -0.06 0.8
--.AS1.Z. 1985-03-26T10:49:21.50 10.0 undecidable manual PG 264 0.0033 -0.05 2.1
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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