Earthquake with magnitude of Md 2.0 on date 23-03-1998 and time 17:45:56 (Italy) in region 3 km NE Trevi (PG)

A magnitude Md 2.0 earthquake occured in region: 3 km NE Trevi (PG), on

  • 23-03-1998 16:45:56 (UTC)
  • 23-03-1998 17:45:56 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9020, 12.7710 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
Trevi PG 3 8469 8469
Foligno PG 8 57155 65624
Campello sul Clitunno PG 9 2442 68066
Montefalco PG 10 5679 73745
Castel Ritaldi PG 12 3278 77023
Sellano PG 13 1079 78102
Spello PG 13 8645 86747
Bevagna PG 14 5081 91828
Cerreto di Spoleto PG 15 1075 92903
Vallo di Nera PG 17 364 93267
Giano dell'Umbria PG 17 3846 97113
Gualdo Cattaneo PG 18 6155 103268
Valtopina PG 18 1398 104666
Cannara PG 19 4305 108971
Spoleto PG 19 38218 147189
Sant'Anatolia di Narco PG 19 564 147753

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km SE of Foligno (57155 inhabitants)
39 Km SE of Perugia (166134 inhabitants)
39 Km N of Terni (111501 inhabitants)
77 Km NE of Viterbo (67173 inhabitants)
80 Km NW of L'Aquila (69753 inhabitants)
81 Km W of Teramo (54892 inhabitants)
96 Km SE of Arezzo (99543 inhabitants)
100 Km N of Guidonia Montecelio (88673 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
ML-VAX 2.0
1998-03-23
16:45:56
42.902 12.771 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 327769
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-03-23 16:45:56 ± 0.501
Latitude 42.9020 ± 0.0205
Longitude 12.7710 ± 0.0357
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 327769

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) 3695.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 226
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) 0.5
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
Magnitudes information

Md:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 327769
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:07:13

ML:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 327769
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
--.ARV.Z. 1998-03-23T16:46:18.00 10.0 undecidable manual SG 11 0.5994 -0.25 0.6
--.SNTG.Z. 1998-03-23T16:46:10.74 10.0 undecidable manual SG 19 0.3663 0.06 0.9
--.ARV.Z. 1998-03-23T16:46:08.50 10.0 undecidable manual PG 11 0.5994 -0.68 0.9
--.NRCA.Z. 1998-03-23T16:46:06.58 10.0 undecidable manual SG 105 0.2553 -0.46 0.7
--.SNTG.Z. 1998-03-23T16:46:05.21 10.0 undecidable manual PG 19 0.3663 0.41 1.8
--.ASS.Z. 1998-03-23T16:46:05.59 10.0 undecidable manual SG 331 0.1776 1.06 0.2
--.NRCA.Z. 1998-03-23T16:46:03.70 10.0 undecidable manual PG 105 0.2553 0.37 1.9
--.ASS.Z. 1998-03-23T16:46:00.44 10.0 undecidable manual PG 331 0.1776 -0.81 0.9
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