Earthquake with magnitude of Md 2.1 on date 29-08-2001 and time 01:28:22 (Italy) in region 4 km SE Borbona (RI)

A magnitude Md 2.1 earthquake occured in region: 4 km SE Borbona (RI), on

  • 28-08-2001 23:28:22 (UTC)
  • 29-08-2001 01:28:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.4830, 13.1570 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
Borbona RI 4 617 617
Cagnano Amiterno AQ 6 1369 1986
Posta RI 7 694 2680
Montereale AQ 9 2581 5261
Micigliano RI 9 127 5388
Antrodoco RI 10 2588 7976
Barete AQ 11 737 8713
Borgo Velino RI 12 972 9685
Pizzoli AQ 13 4326 14011
Capitignano AQ 13 665 14676
Castel Sant'Angelo RI 14 1308 15984
Scoppito AQ 15 3727 19711
Cittareale RI 15 482 20193
Leonessa RI 18 2435 22628
Campotosto AQ 19 542 23170
Amatrice RI 20 2657 25827

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km NW of L'Aquila (69753 inhabitants)
43 Km E of Terni (111501 inhabitants)
49 Km W of Teramo (54892 inhabitants)
64 Km NE of Guidonia Montecelio (88673 inhabitants)
64 Km SE of Foligno (57155 inhabitants)
65 Km NE of Tivoli (56533 inhabitants)
82 Km W of Montesilvano (53738 inhabitants)
84 Km W of Chieti (51815 inhabitants)
86 Km NE of Roma (2864731 inhabitants)
87 Km E of Viterbo (67173 inhabitants)
87 Km W of Pescara (121014 inhabitants)
94 Km SE of Perugia (166134 inhabitants)
94 Km NE of Velletri (53303 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 2.1 2001-08-28
23:28:22
42.483 13.157 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 426809
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2001-08-28 23:28:22 ± 0.256
Latitude 42.4830 ± 0.0179
Longitude 13.1570 ± 0.0204
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 426809

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) 2602.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 130
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) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00194
Epicentral distance of station farthest from the epicenter (degree) 0.00615
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 426809
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 23:42:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ASS.Z. 2001-08-28T23:28:47.55 10.0 undecidable manual SG 327 0.6882 1.23 0.1
--.ASS.Z. 2001-08-28T23:28:36.91 10.0 undecidable manual PG 327 0.6882 0.73 0.9
--.MNS.Z. 2001-08-28T23:28:35.67 10.0 undecidable manual SG 254 0.3552 -0.28 0.8
--.NRCA.Z. 2001-08-28T23:28:34.62 10.0 undecidable manual SG 354 0.3552 -0.91 0.3
--.AQU.Z. 2001-08-28T23:28:31.00 10.0 undecidable manual SG 125 0.2109 -0.37 0.8
--.MNS.Z. 2001-08-28T23:28:29.83 10.0 undecidable manual PG 254 0.3552 -0.37 2
--.NRCA.Z. 2001-08-28T23:28:29.23 10.0 undecidable manual PG 354 0.3552 -0.73 1.3
--.AQU.Z. 2001-08-28T23:28:28.30 10.0 undecidable manual PG 125 0.2109 0.48 1.8
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