Earthquake with magnitude of Md 2.3 on date 10-11-1997 and time 00:30:31 (Italy) in region 5 km SE Cittareale (RI)

A magnitude Md 2.3 earthquake occured in region: 5 km SE Cittareale (RI), on

  • 09-11-1997 23:30:31 (UTC)
  • 10-11-1997 00:30:31 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.58, 13.2 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
Cittareale RI 5 482 482
Montereale AQ 7 2581 3063
Amatrice RI 9 2657 5720
Borbona RI 10 617 6337
Capitignano AQ 11 665 7002
Posta RI 11 694 7696
Accumoli RI 13 667 8363
Cagnano Amiterno AQ 14 1369 9732
Campotosto AQ 14 542 10274
Barete AQ 16 737 11011
Pizzoli AQ 18 4326 15337
Micigliano RI 19 127 15464
Leonessa RI 20 2435 17899

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km NW of L'Aquila (69753 inhabitants)
42 Km W of Teramo (54892 inhabitants)
46 Km E of Terni (111501 inhabitants)
58 Km SE of Foligno (57155 inhabitants)
76 Km NE of Guidonia Montecelio (88673 inhabitants)
76 Km NE of Tivoli (56533 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
83 Km W of Chieti (51815 inhabitants)
84 Km W of Pescara (121014 inhabitants)
89 Km SE of Perugia (166134 inhabitants)
92 Km E of Viterbo (67173 inhabitants)
97 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 2.3 1997-11-09
23:30:31
42.58 13.21 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 311479
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-11-09 23:30:31 ± 0.447
Latitude 42.58 ± 0.03
Longitude 13.21 ± 0.02
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 311479

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) 3725.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 163
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
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) 0.00243
Epicentral distance of station farthest from the epicenter (degree) 0.01036
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 4
Type of magnitude Md
Reference to an origin 311479
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:52:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.FB9.Z. 1997-11-09T23:31:11.83 10.0 undecidable manual SN 344 0.0104 1.16 0.1
--.SDI.Z. 1997-11-09T23:31:06.70 10.0 undecidable manual SG 152 0.0088 0.88 0.2
--.FB9.Z. 1997-11-09T23:30:53.39 10.0 undecidable manual PN 344 0.0104 -0.7 0.6
--.SDI.Z. 1997-11-09T23:30:51.83 10.0 undecidable manual PG 152 0.0088 0.53 0.9
--.MNS.Z. 1997-11-09T23:30:48.26 10.0 undecidable manual SG 243 0.0039 0.01 0.7
--.PQ9.Z. 1997-11-09T23:30:43.34 10.0 undecidable manual PG 165 0.0052 -0.49 1.2
--.MNS.Z. 1997-11-09T23:30:41.18 10.0 positive manual PG 243 0.0039 0.03 3.5
--.AQU.Z. 1997-11-09T23:30:41.50 10.0 undecidable manual SG 147 0.0024 -0.98 0.1
--.AQU.Z. 1997-11-09T23:30:37.75 10.0 undecidable manual PG 147 0.0024 0.19 1.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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