Earthquake with magnitude of Md 2.9 on date 09-04-1998 and time 16:23:28 (Italy) in region 4 km W Cittareale (RI)

A magnitude Md 2.9 earthquake occured in region: 4 km W Cittareale (RI), on

  • 09-04-1998 14:23:28 (UTC)
  • 09-04-1998 16:23:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.64, 13.12 at 3 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
Cittareale RI 4 482 482
Posta RI 12 694 1176
Accumoli RI 13 667 1843
Cascia PG 13 3217 5060
Borbona RI 14 617 5677
Monteleone di Spoleto PG 14 599 6276
Amatrice RI 14 2657 8933
Leonessa RI 15 2435 11368
Montereale AQ 16 2581 13949
Poggiodomo PG 17 117 14066
Norcia PG 18 4957 19023
Capitignano AQ 20 665 19688

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km NW of L'Aquila (69753 inhabitants)
40 Km E of Terni (111501 inhabitants)
48 Km W of Teramo (54892 inhabitants)
49 Km SE of Foligno (57155 inhabitants)
78 Km NE of Guidonia Montecelio (88673 inhabitants)
79 Km NE of Tivoli (56533 inhabitants)
79 Km SE of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
87 Km E of Viterbo (67173 inhabitants)
92 Km W of Chieti (51815 inhabitants)
92 Km W of Pescara (121014 inhabitants)
98 Km NE of Roma (2864731 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 2.9
ML-VAX 1.7
1998-04-09
14:23:28
42.64 13.12 3 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 333189
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-04-09 14:23:28 ± 0.177
Latitude 42.64 ± 0.01
Longitude 13.12 ± 0.02
Depth (km) 3 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 333189

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) 1534.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 144
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
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) 0.00178
Epicentral distance of station farthest from the epicenter (degree) 0.00971
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

Md:2.9

Field Value
Value 2.9
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 333189
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:12:10

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 7
Type of magnitude ML
Reference to an origin 333189
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 Takeoff_angle Residual Weight
--.ARV.Z. 1998-04-09T14:23:59.92 10.0 undecidable manual SG 351 0.0079 -0.28 0.5
--.SNTG.Z. 1998-04-09T14:23:52.68 10.0 undecidable manual SG 348 0.0057 0.17 0.7
--.FB9.Z. 1998-04-09T14:23:51.52 10.0 undecidable manual PG 346 0.0097 0.58 0.6
--.SDI.Z. 1998-04-09T14:23:50.96 10.0 undecidable manual PG 150 0.0095 0.55 0.7
--.ASS.Z. 1998-04-09T14:23:49.45 10.0 undecidable manual SG 321 0.0049 -0.32 0.6
--.ARV.Z. 1998-04-09T14:23:46.68 10.0 undecidable manual PG 351 0.0079 -0.32 1.2
--.MNS.Z. 1998-04-09T14:23:44.61 10.0 undecidable manual SG 232 0.0036 -0.14 0.7
--.PQ9.Z. 1998-04-09T14:23:43.47 10.0 undecidable manual PG 161 0.0057 0.66 0.7
--.AQU.Z. 1998-04-09T14:23:41.56 10.0 undecidable manual SG 143 0.0031 -0.89 0.1
--.SNTG.Z. 1998-04-09T14:23:41.70 10.0 undecidable manual PG 348 0.0057 -0.86 0.4
--.ASS.Z. 1998-04-09T14:23:40.70 10.0 undecidable manual PG 321 0.0049 -0.27 1.6
--.MNS.Z. 1998-04-09T14:23:38.10 10.0 positive manual PG 232 0.0036 0.03 3.6
--.AQU.Z. 1998-04-09T14:23:36.90 10.0 undecidable manual PG 143 0.0031 -0.66 0.8
--.NRCA.Z. 1998-04-09T14:23:36.39 10.0 undecidable manual SG 358 0.0018 -0.26 0.6
--.NRCA.Z. 1998-04-09T14:23:33.88 10.0 positive manual PG 358 0.0018 0.48 2.2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download