Earthquake with magnitude of ML 2.6 on date 08-03-2018 and time 09:55:36 (Italy) in region 4 km NE Ragalna (CT)

A magnitude ML 2.6 earthquake occured in region: 4 km NE Ragalna (CT), on

  • 08-03-2018 08:55:36 (UTC)
  • 08-03-2018 09:55:36 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.6560, 14.9770 at 2 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
Ragalna CT 4 3924 3924
Nicolosi CT 6 7463 11387
Belpasso CT 7 28108 39495
Pedara CT 9 14102 53597
Santa Maria di Licodia CT 9 7641 61238
Biancavilla CT 10 24007 85245
Trecastagni CT 10 10910 96155
Camporotondo Etneo CT 10 5023 101178
San Pietro Clarenza CT 10 7743 108921
Paternò CT 11 48228 157149
Mascalucia CT 11 31958 189107
Viagrande CT 12 8563 197670
Zafferana Etnea CT 12 9517 207187
Tremestieri Etneo CT 12 20589 227776
Adrano CT 13 36122 263898
Gravina di Catania CT 13 25838 289736
Aci Bonaccorsi CT 13 3524 293260
San Giovanni la Punta CT 14 23060 316320
Sant'Agata li Battiati CT 14 9479 325799
Aci Sant'Antonio CT 14 17984 343783
Milo CT 15 1087 344870
Santa Venerina CT 15 8592 353462
Misterbianco CT 15 49410 402872
San Gregorio di Catania CT 15 11966 414838
Valverde CT 16 7840 422678
Aci Catena CT 16 29851 452529
Motta Sant'Anastasia CT 16 12116 464645
Acireale CT 17 52622 517267
Sant'Alfio CT 18 1582 518849
Aci Castello CT 19 18723 537572
Bronte CT 19 19172 556744
Catania CT 20 314555 871299

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km W of Acireale (52622 inhabitants)
20 Km NW of Catania (314555 inhabitants)
72 Km NW of Siracusa (122291 inhabitants)
77 Km SW of Reggio di Calabria (183035 inhabitants)
79 Km SW of Messina (238439 inhabitants)
83 Km E of Caltanissetta (63360 inhabitants)
84 Km N of Ragusa (73313 inhabitants)
88 Km NE of Vittoria (63339 inhabitants)
91 Km N of Modica (54633 inhabitants)
92 Km NE of Gela (75827 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
ML 2.6 2018-03-08
08:55:36
37.6557 14.9772 2 2019-04-24
14:49:31
Bollettino Sismico Italiano INGV 56717001
Reviewed
Rev200
ML 2.5 2018-03-08
08:55:35
37.684 14.94 2 2019-02-18
17:00:54
Sala Operativa INGV-OE (Catania) 54427861
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-03-08 08:55:36 ± 0.13
Latitude 37.6557 ± 0.0054
Longitude 14.9772 ± 0.0091
Depth (km) 2 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 56717001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 860
Semi-minor axis of confidence ellipse (meter) 580
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 284
Circular confidence region, given by single value of horizontal uncertainty (meter) 860.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 95
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.03777
Epicentral distance of station farthest from the epicenter (degree) 1.39665
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:2.6

Field Value
Value 2.6
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 56717001
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-05-10 11:01:36

ML:2.5

Field Value
Value 2.5
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 54427861
Agency INGV
Autore Sala Operativa INGV-OE (Catania)
Time of creation (UTC) 2018-03-08 09:17:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PLAC.HHE. 2018-03-08T08:56:03.82 0.3 undecidable manual P 55 155.0226 50 0.99 42
IV.SOI.EHN. 2018-03-08T08:55:55.48 0.6 undecidable manual P 64 105.117 50 0.35 40
IV.GIB.HHE. 2018-03-08T08:55:53.49 0.6 undecidable manual P 294 91.242 50 0.5 39
IV.PLLN.EHN. 2018-03-08T08:55:52.56 0.6 undecidable manual P 297 82.0512 50 0.98 33
IV.CSLB.HHZ. 2018-03-08T08:55:51.62 0.3 undecidable manual P 291 86.4468 50 -0.64 57
IV.MSRU.HHE. 2018-03-08T08:55:51.99 0.3 undecidable manual P 34 81.9513 50 0.43 61
IV.PETRA.HHN. 2018-03-08T08:55:51.47 0.3 undecidable manual P 285 78.1662 50 0.49 61
IV.RAFF.HHZ. 2018-03-08T08:55:50.40 0.3 undecidable manual P 229 72.372 50 0.31 64
IV.MPNC.HHN. 2018-03-08T08:55:48.22 0.3 undecidable manual P 31 63.5919 50 -0.52 62
IV.SSY.HHE. 2018-03-08T08:55:47.32 0.3 undecidable manual P 171 55.8996 50 -0.22 67
IV.HAGA.HHZ. 2018-03-08T08:55:44.82 0.3 undecidable manual P 159 44.0226 93 -0.37 67
IV.GALF.HHZ. 2018-03-08T08:55:44.00 0.6 negative manual P 280 36.5412 93 0.29 46
IV.MUCR.HHZ. 2018-03-08T08:55:44.90 0.3 negative manual P 348 43.9227 93 -0.28 68
IV.CAGR.HHE. 2018-03-08T08:55:44.72 0.6 undecidable manual P 265 42.1245 93 -0.09 47
IV.EPZF.HHZ. 2018-03-08T08:55:43.66 0.3 undecidable manual S 331 21.4674 96 -0.19 72
IV.EMSG.HHZ. 2018-03-08T08:55:42.97 0.3 undecidable manual S 353 18.4704 97 0.15 73
IV.EMSG.HHZ. 2018-03-08T08:55:40.11 0.3 undecidable manual P 353 18.4704 97 0.01 75
IV.EPZF.HHZ. 2018-03-08T08:55:40.38 0.1 undecidable manual P 331 21.4674 96 -0.31 94
IV.ESML.HHZ. 2018-03-08T08:55:39.91 0.3 undecidable manual S 244 9.5793 103 0.15 74
IV.ESLN.HHZ. 2018-03-08T08:55:38.13 0.1 undecidable manual S 357 4.1958 117 0.13 100
IV.ESML.HHZ. 2018-03-08T08:55:38.04 0.3 negative manual P 244 9.5793 103 -0.29 72
IV.ESLN.HHZ. 2018-03-08T08:55:36.73 0.3 undecidable manual P 357 4.1958 117 -0.58 67
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MUCR.HHN. ML:2.4 0.0007875 1.28 AML other m 2018-03-08T08:56:04.31
IV.ESML.HHN. ML:0.0 0.013399999999999999 1.58 AML other m 2018-03-08T08:55:45.19
IV.EPZF.HHN. ML:2.7 0.003915 0.6 AML other m 2018-03-08T08:55:49.89
IV.EPZF.HHE. ML:2.8 0.005705 1.14 AML other m 2018-03-08T08:55:51.94
IV.MUCR.HHE. ML:2.4 0.0007650000000000001 0.58 AML other m 2018-03-08T08:55:57.58
IV.GALF.HHE. ML:2.4 0.001085 0.6 AML other m 2018-03-08T08:55:58.20
IV.GALF.HHN. ML:2.6 0.00173 0.62 AML other m 2018-03-08T08:56:02.58
IV.ESLN.HHN. ML:0.0 0.04638151 0.48 AML other m 2018-03-08T08:55:39.73
IV.ESLN.HHE. ML:0.0 0.05005516 0.4032 AML other m 2018-03-08T08:55:39.57
IV.ESML.HHE. ML:0.0 0.02185 0.46 AML other m 2018-03-08T08:55:43.84
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
Waveforms Seismic signals in miniseed + resp format Download