Earthquake with magnitude of Md 2.8 on date 01-04-1990 and time 14:48:33 (UTC) in region 2 km SW Sirolo (AN)

A magnitude Md 2.8 earthquake occured in region: 2 km SW Sirolo (AN), on

  • 01-04-1990 14:48:33 (UTC)
  • 01-04-1990 16:48:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.52, 13.59 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
Sirolo AN 2 4051 4051
Numana AN 2 3775 7826
Camerano AN 4 7322 15148
Castelfidardo AN 7 18733 33881
Loreto AN 8 12814 46695
Osimo AN 9 34977 81672
Porto Recanati MC 11 12531 94203
Offagna AN 12 1935 96138
Ancona AN 13 100861 196999
Recanati MC 13 21349 218348
Polverigi AN 16 4508 222856
Potenza Picena MC 17 15936 238792
Montefano MC 17 3541 242333
Agugliano AN 17 4865 247198
Montelupone MC 19 3596 250794
Falconara Marittima AN 20 26565 277359

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km SE of Ancona (100861 inhabitants)
59 Km SE of Fano (60888 inhabitants)
70 Km SE of Pesaro (94582 inhabitants)
95 Km NE of Foligno (57155 inhabitants)
96 Km N of Teramo (54892 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 2.8
ML-VAX 1.9
1990-04-01
14:48:33
43.52 13.59 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 113099
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1990-04-01 14:48:33 ± 0.261
Latitude 43.52 ± 0.01
Longitude 13.59 ± 0.03
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 113099

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) 2769.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 164
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00024
Epicentral distance of station farthest from the epicenter (degree) 0.02631
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

Md:2.8

Field Value
Value 2.8
Uncertainty
Num. used stations 9
Type of magnitude Md
Reference to an origin 113099
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:45:06

ML:1.9

Field Value
Value 1.9
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 113099
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.RBL.Z. 1990-04-01T14:49:55.30 10.0 undecidable manual SN 359 0.0263 0.68 0.4
--.SDI.Z. 1990-04-01T14:49:30.00 10.0 undecidable manual SN 174 0.0163 1.77 0.1
--.AZI.Z. 1990-04-01T14:49:22.00 10.0 undecidable manual SN 184 0.0138 0.43 0.6
--.RBL.Z. 1990-04-01T14:49:20.50 10.0 undecidable manual PN 359 0.0263 0.26 1.2
--.CTI.Z. 1990-04-01T14:49:20.50 10.0 undecidable manual PN 332 0.0259 0.84 0.9
--.PGD.Z. 1990-04-01T14:49:19.00 10.0 undecidable manual SN 285 0.0125 0.61 0.6
--.MNS.Z. 1990-04-01T14:49:17.00 10.0 undecidable manual SN 210 0.0118 0.66 0.6
--.SDI.Z. 1990-04-01T14:49:06.00 10.0 undecidable manual PN 174 0.0163 0.99 0.9
--.ASS.Z. 1990-04-01T14:49:03.10 10.0 undecidable manual SG 236 0.0074 0.59 0.6
--.AZI.Z. 1990-04-01T14:49:02.00 10.0 undecidable manual PN 184 0.0138 0.84 1.1
--.PGD.Z. 1990-04-01T14:49:00.50 10.0 undecidable manual PN 285 0.0125 1.18 0.8
--.ALP.Z. 1990-04-01T14:48:59.60 10.0 undecidable manual SG 181 0.0066 -0.17 0.8
--.MNS.Z. 1990-04-01T14:48:58.00 10.0 undecidable manual PN 210 0.0118 -0.14 2
--.ARV.Z. 1990-04-01T14:48:51.59 10.0 undecidable manual SG 268 0.0042 0.33 0.8
--.CIO.Z. 1990-04-01T14:48:50.97 10.0 undecidable manual SG 225 0.004 0.11 0.8
--.ASS.Z. 1990-04-01T14:48:49.10 10.0 undecidable manual PG 236 0.0074 -1.14 1
--.ALP.Z. 1990-04-01T14:48:46.78 10.0 undecidable manual PG 181 0.0066 -1.79 0.3
--.SSO.Z. 1990-04-01T14:48:44.99 10.0 undecidable manual SG! 209 0.0023 1.7 0
--.ARV.Z. 1990-04-01T14:48:42.95 10.0 undecidable manual PG 268 0.0042 -0.71 1.6
--.CIO.Z. 1990-04-01T14:48:41.99 10.0 undecidable manual PG 225 0.004 -1.44 0.7
--.SSO.Z. 1990-04-01T14:48:39.00 10.0 undecidable manual PG 209 0.0023 -0.06 2.1
--.AOI.Z. 1990-04-01T14:48:33.97 10.0 negative manual PG 10 0.0002 -0.55 3.1
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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