Earthquake with magnitude of Md 2.0 on date 23-03-1998 and time 22:18:35 (Italy) in region 7 km W Monte Cavallo (MC)

A magnitude Md 2.0 earthquake occured in region: 7 km W Monte Cavallo (MC), on

  • 23-03-1998 21:18:35 (UTC)
  • 23-03-1998 22:18:35 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9640, 12.9280 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
Monte Cavallo MC 7 145 145
Sellano PG 8 1079 1224
Serravalle di Chienti MC 12 1070 2294
Preci PG 13 724 3018
Pieve Torina MC 14 1458 4476
Visso MC 14 1107 5583
Fiordimonte MC 16 202 5785
Cerreto di Spoleto PG 16 1075 6860
Muccia MC 16 915 7775
Pievebovigliana MC 17 866 8641
Ussita MC 17 444 9085
Trevi PG 18 8469 17554
Valtopina PG 18 1398 18952
Foligno PG 18 57155 76107
Nocera Umbra PG 20 5839 81946
Castelsantangelo sul Nera MC 20 281 82227
Campello sul Clitunno PG 20 2442 84669

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km E of Foligno (57155 inhabitants)
47 Km E of Perugia (166134 inhabitants)
50 Km NE of Terni (111501 inhabitants)
72 Km W of Teramo (54892 inhabitants)
78 Km NW of L'Aquila (69753 inhabitants)
87 Km SW of Ancona (100861 inhabitants)
91 Km NE of Viterbo (67173 inhabitants)
98 Km S of Fano (60888 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 2.0 1998-03-23
21:18:35
42.964 12.928 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 327879
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-03-23 21:18:35 ± 0.181
Latitude 42.9640 ± 0.0110
Longitude 12.9280 ± 0.0162
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 327879

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) 1795.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 132
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
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) 0.00162
Epicentral distance of station farthest from the epicenter (degree) 0.00542
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:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 327879
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:07:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.MNS.Z. 1998-03-23T21:18:57.70 10.0 undecidable manual SG 197 0.5994 -0.63 0.1
--.MNS.Z. 1998-03-23T21:18:49.42 10.0 undecidable manual PG 197 0.5994 1.17 0.3
--.SNTG.Z. 1998-03-23T21:18:47.12 10.0 undecidable manual SG 1 0.2886 0.44 0.5
--.ASS.Z. 1998-03-23T21:18:44.20 10.0 undecidable manual SG 296 0.2109 0.04 0.8
--.NRCA.Z. 1998-03-23T21:18:42.81 10.0 undecidable manual SG 134 0.1776 0.02 0.8
--.SNTG.Z. 1998-03-23T21:18:41.75 10.0 undecidable manual PG 1 0.2886 -0.13 1.9
--.ASS.Z. 1998-03-23T21:18:40.34 10.0 undecidable manual PG 296 0.2109 -0.09 1.8
--.NRCA.Z. 1998-03-23T21:18:39.58 10.0 undecidable manual PG 134 0.1776 -0.06 1.8
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download