Earthquake with magnitude of Md 2.3 on date 18-01-1998 and time 18:42:07 (Italy) in region 6 km E Cerreto di Spoleto (PG)

A magnitude Md 2.3 earthquake occured in region: 6 km E Cerreto di Spoleto (PG), on

  • 18-01-1998 17:42:07 (UTC)
  • 18-01-1998 18:42:07 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8320, 12.9860 at 17 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
Cerreto di Spoleto PG 6 1075 1075
Preci PG 7 724 1799
Sellano PG 8 1079 2878
Norcia PG 10 4957 7835
Vallo di Nera PG 12 364 8199
Cascia PG 13 3217 11416
Poggiodomo PG 14 117 11533
Visso MC 14 1107 12640
Castelsantangelo sul Nera MC 15 281 12921
Sant'Anatolia di Narco PG 16 564 13485
Campello sul Clitunno PG 17 2442 15927
Ussita MC 18 444 16371
Monte Cavallo MC 18 145 16516
Scheggino PG 18 461 16977

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km SE of Foligno (57155 inhabitants)
41 Km NE of Terni (111501 inhabitants)
57 Km SE of Perugia (166134 inhabitants)
62 Km W of Teramo (54892 inhabitants)
63 Km NW of L'Aquila (69753 inhabitants)
86 Km NE of Viterbo (67173 inhabitants)
95 Km N of Guidonia Montecelio (88673 inhabitants)
98 Km SW of Ancona (100861 inhabitants)
98 Km N of Tivoli (56533 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 2.3 1998-01-18
17:42:07
42.832 12.986 17 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 321049
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-01-18 17:42:07 ± 0.13
Latitude 42.8320 ± 0.0035
Longitude 12.9860 ± 0.0101
Depth (km) 17 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 321049

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) 915.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 117
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) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00081
Epicentral distance of station farthest from the epicenter (degree) 0.00599
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 3
Type of magnitude Md
Reference to an origin 321049
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:01:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ARV.Z. 1998-01-18T17:42:31.62 10.0 undecidable manual SG 357 0.666 0.25 0.2
--.MNS.Z. 1998-01-18T17:42:25.90 10.0 undecidable manual SG 206 0.4995 -0.19 0.4
--.SNTG.Z. 1998-01-18T17:42:23.50 10.0 undecidable manual SG 355 0.4218 -0.15 0.6
--.ASS.Z. 1998-01-18T17:42:21.00 10.0 undecidable manual SG 313 0.333 0.09 0.8
--.ARV.Z. 1998-01-18T17:42:21.28 10.0 undecidable manual PG 357 0.666 -0.19 0.9
--.MNS.Z. 1998-01-18T17:42:18.42 10.0 undecidable manual PG 206 0.4995 0.01 2
--.SNTG.Z. 1998-01-18T17:42:16.95 10.0 undecidable manual PG 355 0.4218 -0.06 2.1
--.ASS.Z. 1998-01-18T17:42:15.50 10.0 undecidable manual PG 313 0.333 0.07 2.1
--.NRCA.Z. 1998-01-18T17:42:14.30 10.0 undecidable manual SG 89 0.0888 -0.32 0.1
--.NRCA.Z. 1998-01-18T17:42:11.90 10.0 undecidable manual PG 89 0.0888 0.26 0.7
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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