Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.6 on date 08-09-1985 and time 12:14:29 (Italy) in region 2 km S Monte Rinaldo (FM)

A magnitude Md 2.6 earthquake occured in region: 2 km S Monte Rinaldo (FM), on

  • 08-09-1985 10:14:29 (UTC)
  • 08-09-1985 12:14:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0150, 13.5790 at 8 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
Monte Rinaldo FM 2 379 379
Ortezzano FM 3 774 1153
Montelparo FM 4 778 1931
Montalto delle Marche AP 4 2122 4053
Montedinove AP 5 488 4541
Montottone FM 5 979 5520
Monteleone di Fermo FM 6 395 5915
Monte Vidon Combatte FM 6 433 6348
Monsampietro Morico FM 6 659 7007
Santa Vittoria in Matenano FM 7 1330 8337
Rotella AP 7 906 9243
Petritoli FM 9 2335 11578
Carassai AP 9 1100 12678
Force AP 9 1354 14032
Castignano AP 9 2796 16828
Belmonte Piceno FM 9 646 17474
Cossignano AP 10 978 18452
Monte Giberto FM 10 801 19253
Montefalcone Appennino FM 10 424 19677
Servigliano FM 10 2336 22013
Smerillo FM 11 365 22378
Grottazzolina FM 11 3398 25776
Monte San Martino MC 11 765 26541
Ponzano di Fermo FM 12 1674 28215
Offida AP 13 5058 33273
Montegiorgio FM 13 6851 40124
Penna San Giovanni MC 13 1108 41232
Falerone FM 13 3337 44569
Monterubbiano FM 14 2230 46799
Magliano di Tenna FM 14 1452 48251
Monte Vidon Corrado FM 14 731 48982
Appignano del Tronto AP 15 1785 50767
Montefiore dell'Aso AP 15 2123 52890
Comunanza AP 15 3166 56056
Moresco FM 15 598 56654
Ripatransone AP 15 4309 60963
Palmiano AP 16 196 61159
Montappone FM 16 1682 62841
Venarotta AP 16 2066 64907
Rapagnano FM 16 2145 67052
Massa Fermana FM 17 963 68015
Sant'Angelo in Pontano MC 18 1436 69451
Castorano AP 18 2380 71831
Ascoli Piceno AP 18 49407 121238
Massignano AP 18 1638 122876
Amandola FM 19 3629 126505
Roccafluvione AP 19 2010 128515
Lapedona FM 19 1166 129681
Torre San Patrizio FM 19 2048 131729
Castel di Lama AP 20 8634 140363
Monte San Pietrangeli FM 20 2458 142821
Francavilla d'Ete FM 20 964 143785
Fermo FM 20 37655 181440

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km N of Teramo (54892 inhabitants)
67 Km S of Ancona (100861 inhabitants)
71 Km E of Foligno (57155 inhabitants)
73 Km NW of Montesilvano (53738 inhabitants)
75 Km N of L'Aquila (69753 inhabitants)
80 Km NW of Pescara (121014 inhabitants)
88 Km NW of Chieti (51815 inhabitants)
91 Km NE of Terni (111501 inhabitants)
97 Km E of Perugia (166134 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		Md 2.6 1985-09-08
10:14:29		 43.015 13.579 7 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 12919
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-09-08 10:14:29 ± 0.317
Latitude 43.0150 ± 0.0154
Longitude 13.5790 ± 0.0291
Depth (km) 7 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 12919

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) 2918.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 170
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
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) 0.00210
Epicentral distance of station farthest from the epicenter (degree) 0.01182
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

Md:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 12919
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:16:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.MNS.Z. 1985-09-08T10:15:02.50 10.0 undecidable manual SG 226 0.9102 0.91 0.2
--.AR1.Z. 1985-09-08T10:14:54.50 10.0 undecidable manual SG 316 0.666 0.69 0.5
--.SD1.Z. 1985-09-08T10:14:54.50 10.0 undecidable manual PN 172 1.3098 0.06 1
--.AS1.Z. 1985-09-08T10:14:54.00 10.0 undecidable manual SG 274 0.6771 -0.1 0.6
--.AM1.Z. 1985-09-08T10:14:50.80 10.0 undecidable manual SG 1 0.5328 1.29 0.1
--.MNS.Z. 1985-09-08T10:14:47.50 10.0 undecidable manual PG 226 0.9102 -0.71 0.6
--.AR1.Z. 1985-09-08T10:14:44.00 10.0 undecidable manual PG 316 0.666 0.29 1.3
--.CM2.Z. 1985-09-08T10:14:44.20 10.0 undecidable manual SG 299 0.3552 0.16 0.9
--.AS1.Z. 1985-09-08T10:14:44.00 10.0 undecidable manual PG 274 0.6771 0.12 1.5
--.AM1.Z. 1985-09-08T10:14:40.50 10.0 undecidable manual PG 1 0.5328 -0.73 1.5
--.ALP.Z. 1985-09-08T10:14:39.90 10.0 undecidable manual SG 182 0.2331 0.57 0.6
--.CM2.Z. 1985-09-08T10:14:37.20 10.0 undecidable manual PG 299 0.3552 -0.87 1.1
--.ALP.Z. 1985-09-08T10:14:35.30 10.0 undecidable manual PG 182 0.2331 -0.05 3.1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, /tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download