Earthquake with magnitude of Md 2.5 on date 09-08-2001 and time 00:35:04 (Italy) in region 6 km N Posta (RI)

A magnitude Md 2.5 earthquake occured in region: 6 km N Posta (RI), on

  • 08-08-2001 22:35:04 (UTC)
  • 09-08-2001 00:35:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5750, 13.1080 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
Posta RI 6 694 694
Cittareale RI 7 482 1176
Borbona RI 7 617 1793
Leonessa RI 12 2435 4228
Montereale AQ 13 2581 6809
Micigliano RI 14 127 6936
Monteleone di Spoleto PG 15 599 7535
Cagnano Amiterno AQ 16 1369 8904
Amatrice RI 16 2657 11561
Capitignano AQ 17 665 12226
Antrodoco RI 18 2588 14814
Accumoli RI 18 667 15481
Cascia PG 18 3217 18698
Borgo Velino RI 19 972 19670
Poggio Bustone RI 20 2055 21725
Barete AQ 20 737 22462

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km NW of L'Aquila (69753 inhabitants)
38 Km E of Terni (111501 inhabitants)
50 Km W of Teramo (54892 inhabitants)
54 Km SE of Foligno (57155 inhabitants)
71 Km NE of Guidonia Montecelio (88673 inhabitants)
73 Km NE of Tivoli (56533 inhabitants)
83 Km SE of Perugia (166134 inhabitants)
84 Km E of Viterbo (67173 inhabitants)
86 Km W of Montesilvano (53738 inhabitants)
91 Km W of Chieti (51815 inhabitants)
92 Km W of Pescara (121014 inhabitants)
92 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
Bulletin
Rev1000
Md 2.5 2001-08-08
22:35:04
42.575 13.108 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 425789
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2001-08-08 22:35:04 ± 0.119
Latitude 42.5750 ± 0.0066
Longitude 13.1080 ± 0.0127
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 425789

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) 1270.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 134
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
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) 0.00227
Epicentral distance of station farthest from the epicenter (degree) 0.00834
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:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 425789
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 23:41:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ARV.Z. 2001-08-08T22:35:36.89 10.0 undecidable manual SG 352 0.9213 0.9 0
--.ASS.Z. 2001-08-08T22:35:24.80 10.0 undecidable manual SG 325 0.5883 -0.27 0.4
--.ARV.Z. 2001-08-08T22:35:22.73 10.0 undecidable manual PG 352 0.9213 0.17 0.9
--.MNS.Z. 2001-08-08T22:35:17.78 10.0 undecidable manual SG 239 0.3552 -0.12 0.6
--.PTQR.Z. 2001-08-08T22:35:16.40 10.0 undecidable manual PG 158 0.5883 -0.25 1
--.ASS.Z. 2001-08-08T22:35:15.92 10.0 undecidable manual PG 325 0.5883 -0.32 0.8
--.AQU.Z. 2001-08-08T22:35:15.77 10.0 undecidable manual SG 135 0.3108 -0.27 0.4
--.NRCA.Z. 2001-08-08T22:35:13.98 10.0 undecidable manual SG 0 0.2553 -0.42 0.2
--.MNS.Z. 2001-08-08T22:35:12.25 10.0 positive manual PG 239 0.3552 0.14 2.8
--.AQU.Z. 2001-08-08T22:35:11.35 10.0 undecidable manual PG 135 0.3108 0.32 0.8
--.NRCA.Z. 2001-08-08T22:35:10.20 10.0 positive manual PG 0 0.2553 -0.06 3.1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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