Earthquake with magnitude of Md 2.3 on date 28-02-1998 and time 05:20:02 (Italy) in region 6 km S Preci (PG)

A magnitude Md 2.3 earthquake occured in region: 6 km S Preci (PG), on

  • 28-02-1998 04:20:02 (UTC)
  • 28-02-1998 05:20:02 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.83, 13.02 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
Preci PG 6 724 724
Norcia PG 7 4957 5681
Cerreto di Spoleto PG 9 1075 6756
Sellano PG 10 1079 7835
Cascia PG 12 3217 11052
Visso MC 13 1107 12159
Castelsantangelo sul Nera MC 13 281 12440
Vallo di Nera PG 15 364 12804
Poggiodomo PG 15 117 12921
Ussita MC 16 444 13365
Monte Cavallo MC 18 145 13510
Sant'Anatolia di Narco PG 19 564 14074

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km E of Foligno (57155 inhabitants)
43 Km NE of Terni (111501 inhabitants)
59 Km W of Teramo (54892 inhabitants)
60 Km SE of Perugia (166134 inhabitants)
61 Km NW of L'Aquila (69753 inhabitants)
88 Km NE of Viterbo (67173 inhabitants)
95 Km N of Guidonia Montecelio (88673 inhabitants)
96 Km SW of Ancona (100861 inhabitants)
98 Km N of Tivoli (56533 inhabitants)
99 Km W of Montesilvano (53738 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 2.3 1998-02-28
04:20:02
42.83 13.02 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 324009
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-02-28 04:20:02 ± 0.223
Latitude 42.83 ± 0.01
Longitude 13.02 ± 0.02
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 324009

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) 2088.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 217
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00186
Epicentral distance of station farthest from the epicenter (degree) 0.00785
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 324009
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:03:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.FB9.Z. 1998-02-28T04:20:32.27 10.0 undecidable manual SG 348 0.0079 -0.52 0.1
--.MNS.Z. 1998-02-28T04:20:20.88 10.0 undecidable manual SG 209 0.0045 -0.06 0.8
--.FB9.Z. 1998-02-28T04:20:20.67 10.0 undecidable manual PG 348 0.0079 0.63 0.3
--.SNTG.Z. 1998-02-28T04:20:18.73 10.0 undecidable manual SG 351 0.0038 0.42 0.4
--.ASS.Z. 1998-02-28T04:20:15.99 10.0 undecidable manual SG 310 0.0032 -0.02 0.8
--.MNS.Z. 1998-02-28T04:20:13.19 10.0 undecidable manual PG 209 0.0045 -0.01 2
--.SNTG.Z. 1998-02-28T04:20:11.28 10.0 undecidable manual PG 351 0.0038 -0.4 0.9
--.CLF9.Z. 1998-02-28T04:20:11.37 10.0 undecidable manual SG 341 0.0019 -0.05 0.8
--.ASS.Z. 1998-02-28T04:20:10.49 10.0 undecidable manual PG 310 0.0032 0.14 1.9
--.CLF9.Z. 1998-02-28T04:20:07.58 10.0 undecidable manual PG 341 0.0019 -0.12 1.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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