Earthquake with magnitude of Md 2.1 on date 20-11-1990 and time 16:26:31 (UTC) in region 3 km NE Aieta (CS)

A magnitude Md 2.1 earthquake occured in region: 3 km NE Aieta (CS), on

  • 20-11-1990 16:26:31 (UTC)
  • 20-11-1990 17:26:31 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 39.9500, 15.8540 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
Aieta CS 3 823 823
Tortora CS 8 6187 7010
Praia a Mare CS 9 6725 13735
Papasidero CS 10 734 14469
Laino Borgo CS 10 1921 16390
Laino Castello CS 11 848 17238
Trecchina PZ 11 2316 19554
Lauria PZ 11 12919 32473
Castelluccio Inferiore PZ 12 2131 34604
Maratea PZ 12 5139 39743
San Nicola Arcella CS 13 1957 41700
Castelluccio Superiore PZ 13 824 42524
Mormanno CS 13 3027 45551
Nemoli PZ 14 1495 47046
Santa Domenica Talao CS 14 1263 48309
Rotonda PZ 16 3494 51803
Rivello PZ 16 2767 54570
Scalea CS 17 10913 65483
Orsomarso CS 17 1265 66748

Municipalities with at least 50000 inhabitants

An earthquake occurred to
77 Km S of Potenza (67122 inhabitants)
81 Km NW of Cosenza (67546 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 2.1
ML-VAX 1.6
1990-11-20
16:26:31
39.95 15.854 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 130689
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1990-11-20 16:26:31 ± 0.357
Latitude 39.9500 ± 0.1025
Longitude 15.8540 ± 0.0998
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 130689

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) 14217.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 166
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
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) 0.00105
Epicentral distance of station farthest from the epicenter (degree) 0.01174
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 130689
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:01:36

ML:1.6

Field Value
Value 1.6
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 130689
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(km) Takeoff_angle Residual Weight
--.DR2.Z. 1990-11-20T16:26:57.78 10.0 undecidable manual PN 177 1.2987 1.98 0.1
--.CZI.Z. 1990-11-20T16:26:45.50 10.0 undecidable manual PG 163 0.7548 -1.55 0.2
--.TDS.Z. 1990-11-20T16:26:44.44 10.0 undecidable manual SG! 127 0.4662 -4.4 0
--.MGR.Z. 1990-11-20T16:26:43.39 10.0 undecidable manual SG 309 0.2886 0.14 0.5
--.TDS.Z. 1990-11-20T16:26:41.22 10.0 positive manual PG 127 0.4662 -0.43 2.2
--.CSI.Z. 1990-11-20T16:26:40.00 10.0 undecidable manual PG 116 0.3663 0.12 1.2
--.MGR.Z. 1990-11-20T16:26:38.17 10.0 negative manual PG 309 0.2886 -0.25 2.3
--.MMN.Z. 1990-11-20T16:26:38.00 10.0 undecidable manual SG 119 0.1221 0.4 0.4
--.MMN.Z. 1990-11-20T16:26:35.50 10.0 undecidable manual PG 119 0.1221 0.34 1.1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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