Earthquake with magnitude of Md 1.8 on date 01-02-2015 and time 20:45:46 (UTC) in region 3 km S Belvedere Ostrense (AN)

A magnitude Md 1.8 earthquake occured in region: 3 km S Belvedere Ostrense (AN), on

  • 01-02-2015 20:45:46 (UTC)
  • 01-02-2015 21:45:46 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.55, 13.16 at 35 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
Belvedere Ostrense AN 3 2234 2234
San Marcello AN 5 2057 4291
Ostra AN 7 6875 11166
Morro d'Alba AN 7 1903 13069
Castelbellino AN 7 4947 18016
Monsano AN 8 3405 21421
Poggio San Marcello AN 8 693 22114
Jesi AN 8 40399 62513
Montecarotto AN 8 1987 64500
Monte Roberto AN 8 3061 67561
Castelplanio AN 9 3540 71101
Maiolati Spontini AN 9 6248 77349
Serra de' Conti AN 10 3746 81095
Ostra Vetere AN 10 3311 84406
Rosora AN 10 1985 86391
Monte San Vito AN 11 6848 93239
Barbara AN 11 1368 94607
San Paolo di Jesi AN 11 933 95540
Cupramontana AN 12 4756 100296
Mergo AN 13 1037 101333
Staffolo AN 14 2253 103586
Trecastelli AN 14 7625 111211
Corinaldo AN 14 4998 116209
Santa Maria Nuova AN 14 4179 120388
Chiaravalle AN 15 14796 135184
Castelleone di Suasa AN 16 1676 136860
Montemarciano AN 16 9992 146852
Camerata Picena AN 16 2567 149419
Serra San Quirico AN 16 2850 152269
Monte Porzio PU 18 2836 155105
San Lorenzo in Campo PU 18 3414 158519
Apiro MC 18 2280 160799
Arcevia AN 18 4612 165411
Agugliano AN 19 4865 170276
Senigallia AN 19 45027 215303
Polverigi AN 19 4508 219811

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km W of Ancona (100861 inhabitants)
34 Km SE of Fano (60888 inhabitants)
44 Km SE of Pesaro (94582 inhabitants)
74 Km SE of Rimini (147750 inhabitants)
76 Km NE of Foligno (57155 inhabitants)
79 Km NE of Perugia (166134 inhabitants)
98 Km SE of Cesena (96758 inhabitants)
Recent and historical Seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the last three days (72 hours)

Earthquakes of the last three days (72 hours)

This map reports the earthquake epicenters located in the past 72 hours (3 days) from the time this page has been generated. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the last 90 days

Earthquakes of the last 90 days

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1985

Earthquakes since 1985

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Significant earthquakes since 1000 AD until 2006

Significant earthquakes since 1000 AD until 2006

This map shows the epicenters of the historical earthquakes catalogue CPT11 (Catalogo Parametrico dei Terremoti Italiani, 2011 version) with estimated magnitude ≥ 5.0 since 1000 AD until 2006. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows 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
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 1000 Md 1.8 2015-02-01
20:45:46
43.55 13.16 35 2015-10-19
09:27:21
Bollettino Sismico Italiano INGV 20160071
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2015-02-01 20:45:46 ± 0.24
Latitude 43.55 ± 0.01
Longitude 13.16 ± 0.01
Depth (km) 35 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 20160071

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 990
Semi-minor axis of confidence ellipse (meter) 273
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 150
Circular confidence region, given by single value of horizontal uncertainty (meter) 990
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 86
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.16098
Epicentral distance of station farthest from the epicenter (degree) 0.6628
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitude information

Md:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 3
Type of magnitude Md
Reference to an origin 20160071
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-07-14 23:31:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ASSB.HHN. 2015-02-01T20:46:08.80 0.1 undecidable manual S 216 0.6259 112 -0.17 93
IV.MURB.HHN. 2015-02-01T20:46:07.85 0.3 undecidable manual S 238 0.5432 116 1.13 47
IV.PIEI.HHZ. 2015-02-01T20:46:04.30 0.6 undecidable manual S 268 0.4506 121 -0.01 49
IV.CSP1.EHE. 2015-02-01T20:46:04.60 0.6 undecidable manual S 176 0.4632 120 -0.01 49
IV.FOSV.EHE. 2015-02-01T20:46:02.70 0.6 undecidable manual S 228 0.3867 125 0 49
IV.FSSB.HHZ. 2015-02-01T20:46:01.00 0.1 undecidable manual S 297 0.3085 132 0.11 99
IV.AOI.HHE. 2015-02-01T20:46:01.70 0.6 undecidable manual S 90 0.322 131 0.5 46
IV.SNTG.HHE. 2015-02-01T20:46:01.60 0.6 undecidable manual S 208 0.3372 129 0.06 49
IV.SSFR.HHZ. 2015-02-01T20:46:00.70 1.0 undecidable manual S 247 0.2959 133 0.08 25
IV.BADI.EHZ. 2015-02-01T20:46:00.67 0.3 undecidable manual P 267 0.6628 111 0.54 61
IV.MPAG.EHZ. 2015-02-01T20:46:00.60 0.6 undecidable manual S 285 0.2977 133 -0.05 50
IV.MURB.HHN. 2015-02-01T20:45:59.37 0.3 undecidable manual P 238 0.5432 116 1.12 49
IV.EL6.EHZ. 2015-02-01T20:45:59.50 0.1 undecidable manual S 190 0.2275 141 0.25 97
IV.SENI.EHE. 2015-02-01T20:45:58.45 1.0 undecidable manual S 20 0.161 151 0.31 25
IV.ASSB.HHN. 2015-02-01T20:45:58.77 0.3 undecidable manual P 216 0.6259 112 -0.77 59
IV.ARVD.HHZ. 2015-02-01T20:45:57.90 0.3 undecidable manual S 251 0.1655 150 -0.31 74
IV.CSP1.EHE. 2015-02-01T20:45:57.01 0.3 undecidable manual P 176 0.4632 120 -0.03 73
IV.PIEI.HHZ. 2015-02-01T20:45:56.44 0.6 undecidable manual P 268 0.4506 121 -0.42 45
IV.AOI.HHE. 2015-02-01T20:45:55.41 0.3 undecidable manual P 90 0.322 131 0.34 71
IV.FOSV.EHE. 2015-02-01T20:45:55.77 0.6 undecidable manual P 228 0.3867 125 -0.16 49
IV.SNTG.HHE. 2015-02-01T20:45:55.11 0.3 undecidable manual P 208 0.3372 129 -0.15 74
IV.SSFR.HHZ. 2015-02-01T20:45:54.49 0.3 undecidable manual P 247 0.2959 133 -0.24 73
IV.FSSB.HHZ. 2015-02-01T20:45:54.70 0.3 negative manual P 297 0.3085 132 -0.18 73
IV.MPAG.EHZ. 2015-02-01T20:45:54.56 0.3 undecidable manual P 285 0.2977 133 -0.19 73
IV.SENI.EHE. 2015-02-01T20:45:53.19 0.3 undecidable manual P 20 0.161 151 -0.11 76
IV.EL6.EHZ. 2015-02-01T20:45:53.78 0.1 negative manual P 190 0.2275 141 -0.16 100
IV.ARVD.HHZ. 2015-02-01T20:45:52.91 0.1 negative manual P 251 0.1655 150 -0.43 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARVD.HHZ. Md:1.7 18 END duration s
IV.EL6.EHZ. Md:1.7 17 END duration s
IV.SSFR.HHZ. Md:2 26 END duration s
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Focal Mechanisms

Focal Mechanisms

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol 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