Earthquake with magnitude of Md 2.4 on date 22-11-2001 and time 17:54:40 (Italy) in region 2 km E Accumoli (RI)

A magnitude Md 2.4 earthquake occured in region: 2 km E Accumoli (RI), on

  • 22-11-2001 16:54:40 (UTC)
  • 22-11-2001 17:54:40 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7, 13.28 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
Accumoli RI 3 667 667
Arquata del Tronto AP 8 1178 1845
Amatrice RI 8 2657 4502
Acquasanta Terme AP 13 2916 7418
Cittareale RI 14 482 7900
Montegallo AP 16 523 8423
Norcia PG 18 4957 13380
Campotosto AQ 18 542 13922
Valle Castellana TE 19 977 14899

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km W of Teramo (54892 inhabitants)
41 Km N of L'Aquila (69753 inhabitants)
54 Km E of Terni (111501 inhabitants)
54 Km SE of Foligno (57155 inhabitants)
75 Km W of Montesilvano (53738 inhabitants)
81 Km W of Pescara (121014 inhabitants)
83 Km W of Chieti (51815 inhabitants)
85 Km SE of Perugia (166134 inhabitants)
90 Km NE of Guidonia Montecelio (88673 inhabitants)
91 Km NE 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
Rev 1000 Md 2.4 2001-11-22
16:54:40
42.71 13.28 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 431289
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2001-11-22 16:54:40 ± 0.192
Latitude 42.71 ± 0.01
Longitude 13.28 ± 0.02
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 431289

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) 1851.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 182
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00154
Epicentral distance of station farthest from the epicenter (degree) 0.00745
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 431289
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 23:47:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ARV.Z. 2001-11-22T16:55:09.58 10.0 undecidable manual SG 342 0.0074 0.92 0
--.SNTG.Z. 2001-11-22T16:55:01.43 10.0 undecidable manual SG 335 0.0053 0.08 0.6
--.ASS.Z. 2001-11-22T16:55:00.11 10.0 undecidable manual SG 308 0.0052 -0.54 0.2
--.MNS.Z. 2001-11-22T16:54:59.53 10.0 undecidable manual SG 233 0.0049 0.07 0.6
--.ARV.Z. 2001-11-22T16:54:56.50 10.0 undecidable manual PG 342 0.0074 -0.55 0.3
--.AQU.Z. 2001-11-22T16:54:53.61 10.0 undecidable manual SG 165 0.0032 -0.08 0.6
--.SNTG.Z. 2001-11-22T16:54:52.27 10.0 undecidable manual PG 335 0.0053 -0.11 1.4
--.ASS.Z. 2001-11-22T16:54:52.43 10.0 undecidable manual PG 308 0.0052 0.46 0.6
--.MNS.Z. 2001-11-22T16:54:51.28 10.0 positive manual PG 233 0.0049 -0.01 3.1
--.AQU.Z. 2001-11-22T16:54:47.97 10.0 undecidable manual PG 165 0.0032 0.01 1.6
--.NRCA.Z. 2001-11-22T16:54:47.50 10.0 undecidable manual SG 316 0.0015 -0.62 0.1
--.NRCA.Z. 2001-11-22T16:54:44.62 10.0 positive manual PG 316 0.0015 0.14 2.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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