Earthquake with magnitude of Md 2.2 on date 23-08-1988 and time 21:21:16 (Italy) in region 2 km E Sant'Angelo in Pontano (MC)

A magnitude Md 2.2 earthquake occured in region: 2 km E Sant'Angelo in Pontano (MC), on

  • 23-08-1988 19:21:16 (UTC)
  • 23-08-1988 21:21:16 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.11, 13.42 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
Sant'Angelo in Pontano MC 2 1436 1436
Falerone FM 4 3337 4773
Montappone FM 5 1682 6455
Monte Vidon Corrado FM 5 731 7186
Penna San Giovanni MC 6 1108 8294
Ripe San Ginesio MC 6 852 9146
Massa Fermana FM 6 963 10109
Loro Piceno MC 6 2401 12510
Servigliano FM 7 2336 14846
Colmurano MC 8 1263 16109
Gualdo MC 8 815 16924
San Ginesio MC 9 3498 20422
Monte San Martino MC 9 765 21187
Montegiorgio FM 10 6851 28038
Mogliano MC 10 4696 32734
Belmonte Piceno FM 10 646 33380
Urbisaglia MC 10 2628 36008
Monteleone di Fermo FM 11 395 36403
Santa Vittoria in Matenano FM 12 1330 37733
Smerillo FM 12 365 38098
Monsampietro Morico FM 12 659 38757
Sarnano MC 13 3264 42021
Camporotondo di Fiastrone MC 13 563 42584
Petriolo MC 13 1998 44582
Cessapalombo MC 13 512 45094
Francavilla d'Ete FM 13 964 46058
Montelparo FM 14 778 46836
Magliano di Tenna FM 14 1452 48288
Montefalcone Appennino FM 14 424 48712
Montottone FM 14 979 49691
Grottazzolina FM 15 3398 53089
Rapagnano FM 15 2145 55234
Amandola FM 15 3629 58863
Tolentino MC 16 20069 78932
Monte Rinaldo FM 16 379 79311
Monte San Pietrangeli FM 16 2458 81769
Caldarola MC 16 1823 83592
Belforte del Chienti MC 16 1886 85478
Comunanza AP 17 3166 88644
Corridonia MC 17 15430 104074
Monte Giberto FM 17 801 104875
Force AP 17 1354 106229
Torre San Patrizio FM 17 2048 108277
Ortezzano FM 17 774 109051
Monte Vidon Combatte FM 18 433 109484
Pollenza MC 19 6618 116102
Ponzano di Fermo FM 19 1674 117776
Montefortino FM 20 1178 118954
Petritoli FM 20 2335 121289
Monte San Giusto MC 20 8191 129480

Municipalities with at least 50000 inhabitants

An earthquake occurred to
55 Km NW of Teramo (54892 inhabitants)
57 Km S of Ancona (100861 inhabitants)
61 Km E of Foligno (57155 inhabitants)
84 Km E of Perugia (166134 inhabitants)
84 Km N of L'Aquila (69753 inhabitants)
88 Km NE of Terni (111501 inhabitants)
88 Km SE of Fano (60888 inhabitants)
89 Km NW of Montesilvano (53738 inhabitants)
97 Km NW of Pescara (121014 inhabitants)
98 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
Rev 1000 Md 2.2 1988-08-23
19:21:16
43.11 13.42 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 76009
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-08-23 19:21:16 ± 0.363
Latitude 43.11 ± 0.02
Longitude 13.42 ± 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 76009

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) 2675.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 217
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) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00154
Epicentral distance of station farthest from the epicenter (degree) 0.00502
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:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 76009
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:11:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ARV.Z. 1988-08-23T19:21:36.00 10.0 undecidable manual SG 318 0.0047 0.5 0.5
--.AM8.Z. 1988-08-23T19:21:34.48 10.0 undecidable manual SG 16 0.004 1.04 0.2
--.ASS.Z. 1988-08-23T19:21:29.00 10.0 undecidable manual PG 265 0.005 0.6 0.9
--.ARV.Z. 1988-08-23T19:21:27.00 10.0 undecidable manual PG 318 0.0047 -0.61 0.9
--.AM8.Z. 1988-08-23T19:21:26.50 10.0 undecidable manual PG 16 0.004 -0.38 1.5
--.CM8.Z. 1988-08-23T19:21:25.86 10.0 undecidable manual SG 292 0.0019 0.05 1.2
--.SS8.Z. 1988-08-23T19:21:24.85 10.0 undecidable manual SG 233 0.0015 0.52 0.8
--.CM8.Z. 1988-08-23T19:21:21.40 10.0 undecidable manual PG 292 0.0019 -0.62 1.1
--.SS8.Z. 1988-08-23T19:21:20.99 10.0 undecidable manual PG 233 0.0015 -0.17 2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download