Earthquake with magnitude of Md 2.6 on date 04-09-1988 and time 01:30:19 (UTC) in region 8 km E Castelsantangelo sul Nera (MC)

A magnitude Md 2.6 earthquake occured in region: 8 km E Castelsantangelo sul Nera (MC), on

  • 04-09-1988 01:30:19 (UTC)
  • 04-09-1988 03:30:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.87, 13.24 at 13 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
Castelsantangelo sul Nera MC 8 281 281
Montemonaco AP 8 604 885
Montegallo AP 8 523 1408
Montefortino FM 11 1178 2586
Ussita MC 12 444 3030
Arquata del Tronto AP 12 1178 4208
Bolognola MC 14 142 4350
Visso MC 14 1107 5457
Norcia PG 15 4957 10414
Amandola FM 15 3629 14043
Preci PG 16 724 14767
Comunanza AP 17 3166 17933
Acquasanta Terme AP 18 2916 20849
Palmiano AP 18 196 21045
Acquacanina MC 18 121 21166
Sarnano MC 19 3264 24430
Roccafluvione AP 19 2010 26440
Fiastra MC 19 559 26999
Accumoli RI 20 667 27666

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km NW of Teramo (54892 inhabitants)
45 Km E of Foligno (57155 inhabitants)
59 Km N of L'Aquila (69753 inhabitants)
60 Km NE of Terni (111501 inhabitants)
74 Km E of Perugia (166134 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
86 Km S of Ancona (100861 inhabitants)
92 Km NW of Pescara (121014 inhabitants)
96 Km NW of Chieti (51815 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 2.6
ML-VAX 1.9
1988-09-04
01:30:19
42.87 13.24 13 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 76739
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-09-04 01:30:19 ± 0.229
Latitude 42.87 ± 0.01
Longitude 13.24 ± 0.02
Depth (km) 13 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 76739

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) 2041.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 145
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00421
Epicentral distance of station farthest from the epicenter (degree) 0.01595
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

Md:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 7
Type of magnitude Md
Reference to an origin 76739
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:12:17

ML:1.9

Field Value
Value 1.9
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 76739
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.SDI.Z. 1988-09-04T01:30:58.18 10.0 undecidable manual SN 159 0.0111 -0.61 0.1
--.AZI.Z. 1988-09-04T01:30:49.22 10.0 undecidable manual SG 170 0.008 -0.96 0
--.FG2.Z. 1988-09-04T01:30:49.72 10.0 undecidable manual PN 125 0.0159 0.17 1
--.CRE.Z. 1988-09-04T01:30:42.00 10.0 undecidable manual PN 308 0.0108 0.35 0.9
--.MNS.Z. 1988-09-04T01:30:42.00 10.0 undecidable manual SG 219 0.0057 0.11 0.6
--.SDI.Z. 1988-09-04T01:30:42.49 10.0 negative manual PN 159 0.0111 0.32 2
--.RDP.Z. 1988-09-04T01:30:41.54 10.0 undecidable manual PN 198 0.0106 0.16 1.4
--.ARV.Z. 1988-09-04T01:30:41.90 10.0 undecidable manual SG 340 0.0059 -0.71 0.1
--.RMP.Z. 1988-09-04T01:30:40.50 10.0 undecidable manual PN 200 0.0102 -0.25 1.2
--.AZI.Z. 1988-09-04T01:30:37.79 10.0 undecidable manual PG 170 0.008 0.59 0.5
--.ASS.Z. 1988-09-04T01:30:36.41 10.0 undecidable manual SG 293 0.0042 -0.08 0.7
--.MNS.Z. 1988-09-04T01:30:32.14 10.0 undecidable manual PG 219 0.0057 -0.27 1.3
--.ARV.Z. 1988-09-04T01:30:32.63 10.0 positive manual PG 340 0.0059 -0.19 2.9
--.ASS.Z. 1988-09-04T01:30:29.60 10.0 undecidable manual PG 293 0.0042 0.31 1.2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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