Earthquake with magnitude of Md 2.1 on date 24-10-1998 and time 10:20:58 (Italy) in region 6 km W Rocca Santa Maria (TE)

A magnitude Md 2.1 earthquake occured in region: 6 km W Rocca Santa Maria (TE), on

  • 24-10-1998 08:20:58 (UTC)
  • 24-10-1998 10:20:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.68, 13.46 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
Rocca Santa Maria TE 6 537 537
Valle Castellana TE 7 977 1514
Cortino TE 8 656 2170
Acquasanta Terme AP 11 2916 5086
Crognaleto TE 15 1297 6383
Amatrice RI 15 2657 9040
Campotosto AQ 15 542 9582
Fano Adriano TE 16 296 9878
Torricella Sicura TE 16 2641 12519
Arquata del Tronto AP 17 1178 13697
Accumoli RI 17 667 14364
Montorio al Vomano TE 18 8218 22582
Pietracamela TE 19 271 22853
Campli TE 20 7209 30062

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km W of Teramo (54892 inhabitants)
37 Km N of L'Aquila (69753 inhabitants)
60 Km W of Montesilvano (53738 inhabitants)
66 Km W of Pescara (121014 inhabitants)
68 Km E of Terni (111501 inhabitants)
69 Km NW of Chieti (51815 inhabitants)
69 Km E of Foligno (57155 inhabitants)
96 Km NE of Tivoli (56533 inhabitants)
96 Km NE of Guidonia Montecelio (88673 inhabitants)
99 Km E of Perugia (166134 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 2.1 1998-10-24
08:20:58
42.68 13.46 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 353859
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-10-24 08:20:58 ± 0.311
Latitude 42.68 ± 0.01
Longitude 13.46 ± 0.03
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 353859

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) 2882.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 220
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00259
Epicentral distance of station farthest from the epicenter (degree) 0.00631
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:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 353859
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:31:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.SNTG.Z. 1998-10-24T08:21:22.71 10.0 undecidable manual SG 326 0.0062 0.38 0.3
--.ASS.Z. 1998-10-24T08:21:22.68 10.0 undecidable manual SG 303 0.0063 -0.11 0.6
--.MNS.Z. 1998-10-24T08:21:21.30 10.0 undecidable manual SG 242 0.0057 0.48 0.2
--.ASS.Z. 1998-10-24T08:21:12.56 10.0 undecidable manual PG 303 0.0063 0.13 1.4
--.SNTG.Z. 1998-10-24T08:21:11.81 10.0 undecidable manual PG 326 0.0062 -0.36 1
--.MNS.Z. 1998-10-24T08:21:10.52 10.0 undecidable manual PG 242 0.0057 -0.78 0.2
--.NRCA.Z. 1998-10-24T08:21:09.52 10.0 undecidable manual SG 301 0.0026 -0.2 0.6
--.AQU.Z. 1998-10-24T08:21:05.62 10.0 undecidable manual PG 186 0.0029 0.18 1.4
--.NRCA.Z. 1998-10-24T08:21:05.10 10.0 positive manual PG 301 0.0026 0.13 3.2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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Type Description Link
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