Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.3 on date 30-12-1995 and time 20:42:38 (UTC) in region 2 km E Gualdo (MC)

A magnitude Md 2.3 earthquake occured in region: 2 km E Gualdo (MC), on

  • 30-12-1995 20:42:38 (UTC)
  • 30-12-1995 21:42:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.0720, 13.3590 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Gualdo MC 2 815 815
Sant'Angelo in Pontano MC 4 1436 2251
San Ginesio MC 5 3498 5749
Penna San Giovanni MC 6 1108 6857
Sarnano MC 6 3264 10121
Monte San Martino MC 8 765 10886
Ripe San Ginesio MC 8 852 11738
Cessapalombo MC 9 512 12250
Amandola FM 10 3629 15879
Camporotondo di Fiastrone MC 10 563 16442
Colmurano MC 10 1263 17705
Smerillo FM 10 365 18070
Falerone FM 10 3337 21407
Servigliano FM 11 2336 23743
Montappone FM 12 1682 25425
Loro Piceno MC 12 2401 27826
Monte Vidon Corrado FM 12 731 28557
Montefalcone Appennino FM 12 424 28981
Santa Vittoria in Matenano FM 13 1330 30311
Massa Fermana FM 13 963 31274
Caldarola MC 13 1823 33097
Comunanza AP 13 3166 36263
Bolognola MC 14 142 36405
Monteleone di Fermo FM 14 395 36800
Urbisaglia MC 14 2628 39428
Belforte del Chienti MC 14 1886 41314
Montefortino FM 14 1178 42492
Belmonte Piceno FM 15 646 43138
Acquacanina MC 16 121 43259
Montelparo FM 16 778 44037
Montegiorgio FM 16 6851 50888
Monsampietro Morico FM 16 659 51547
Force AP 16 1354 52901
Mogliano MC 16 4696 57597
Tolentino MC 16 20069 77666
Fiastra MC 17 559 78225
Serrapetrona MC 18 966 79191
Montottone FM 18 979 80170
Monte Rinaldo FM 19 379 80549
Petriolo MC 19 1998 82547
Montemonaco AP 19 604 83151
Francavilla d'Ete FM 20 964 84115

Municipalities with at least 50000 inhabitants

An earthquake occurred to
54 Km NW of Teramo (54892 inhabitants)
55 Km E of Foligno (57155 inhabitants)
62 Km S of Ancona (100861 inhabitants)
79 Km E of Perugia (166134 inhabitants)
80 Km N of L'Aquila (69753 inhabitants)
81 Km NE of Terni (111501 inhabitants)
90 Km NW of Montesilvano (53738 inhabitants)
90 Km SE of Fano (60888 inhabitants)
97 Km NW of Pescara (121014 inhabitants)
100 Km SE of Pesaro (94582 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 2.3
ML-VAX 2.0 		1995-12-30
20:42:38		 43.072 13.359 10 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 239169
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1995-12-30 20:42:38 ± 0.642
Latitude 43.0720 ± 0.0216
Longitude 13.3590 ± 0.0617
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 239169

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) 5554.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 200
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) 0.8
Epicentral distance of station closest to the epicenter (degree) 0.00461
Epicentral distance of station farthest from the epicenter (degree) 0.01255
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 239169
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:46:24

ML:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 239169
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(km) Takeoff_angle Residual Weight
--.MNS.Z. 1995-12-30T20:43:09.40 10.0 undecidable manual SG 215 0.8436 1.01 0.5
--.SDI.Z. 1995-12-30T20:43:05.60 10.0 undecidable manual PN 165 1.3875 1.41 0.6
--.FB9.Z. 1995-12-30T20:43:04.70 10.0 undecidable manual SG 325 0.7437 -0.17 0.7
--.AQU.Z. 1995-12-30T20:43:02.86 10.0 undecidable manual SG 177 0.7104 -1 0.5
--.PQ9.Z. 1995-12-30T20:43:01.00 10.0 undecidable manual PN 178 1.0434 1.65 0.5
--.ASS.Z. 1995-12-30T20:42:58.97 10.0 undecidable manual SG 268 0.5106 1.6 0.2
--.ARV.Z. 1995-12-30T20:42:57.74 10.0 undecidable manual SG 324 0.5217 0.16 0.7
--.MNS.Z. 1995-12-30T20:42:54.74 10.0 undecidable manual PG 215 0.8436 -0.97 1.2
--.FB9.Z. 1995-12-30T20:42:54.33 10.0 undecidable manual PG 325 0.7437 0.44 1.7
--.AQU.Z. 1995-12-30T20:42:51.56 10.0 undecidable manual PG 177 0.7104 -1.74 0.5
--.ASS.Z. 1995-12-30T20:42:49.29 10.0 negative manual PG 268 0.5106 -0.27 3.6
--.ARV.Z. 1995-12-30T20:42:48.75 10.0 undecidable manual PG 324 0.5217 -0.92 1.3
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