Earthquake with magnitude of Md 3.1 on date 27-08-1998 and time 08:59:26 (Italy) in region 1 km W Camporotondo Etneo (CT)

A magnitude Md 3.1 earthquake occured in region: 1 km W Camporotondo Etneo (CT), on

  • 27-08-1998 06:59:26 (UTC)
  • 27-08-1998 08:59:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.5680, 14.9970 at 5 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
Camporotondo Etneo CT 1 5023 5023
San Pietro Clarenza CT 3 7743 12766
Belpasso CT 3 28108 40874
Mascalucia CT 5 31958 72832
Misterbianco CT 5 49410 122242
Gravina di Catania CT 6 25838 148080
Nicolosi CT 6 7463 155543
Motta Sant'Anastasia CT 7 12116 167659
Tremestieri Etneo CT 7 20589 188248
Sant'Agata li Battiati CT 8 9479 197727
Pedara CT 8 14102 211829
Paternò CT 8 48228 260057
San Giovanni la Punta CT 9 23060 283117
Ragalna CT 9 3924 287041
Trecastagni CT 9 10910 297951
San Gregorio di Catania CT 10 11966 309917
Viagrande CT 10 8563 318480
Aci Bonaccorsi CT 11 3524 322004
Catania CT 11 314555 636559
Santa Maria di Licodia CT 11 7641 644200
Valverde CT 11 7840 652040
Aci Sant'Antonio CT 12 17984 670024
Aci Castello CT 13 18723 688747
Aci Catena CT 14 29851 718598
Biancavilla CT 14 24007 742605
Acireale CT 16 52622 795227
Zafferana Etnea CT 17 9517 804744
Adrano CT 18 36122 840866
Santa Venerina CT 18 8592 849458

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km NW of Catania (314555 inhabitants)
16 Km W of Acireale (52622 inhabitants)
62 Km NW of Siracusa (122291 inhabitants)
75 Km N of Ragusa (73313 inhabitants)
80 Km NE of Vittoria (63339 inhabitants)
81 Km N of Modica (54633 inhabitants)
83 Km E of Caltanissetta (63360 inhabitants)
83 Km SW of Reggio di Calabria (183035 inhabitants)
85 Km SW of Messina (238439 inhabitants)
86 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
Md 3.1
ML-VAX 2.3
1998-08-27
06:59:26
37.568 14.997 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 349629
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-08-27 06:59:26 ± 0.191
Latitude 37.5680 ± 0.0138
Longitude 14.9970 ± 0.0177
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 349629

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) 2187.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 91
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00324
Epicentral distance of station farthest from the epicenter (degree) 0.01757
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

Md:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations 8
Type of magnitude Md
Reference to an origin 349629
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:27:30

ML:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 6
Type of magnitude ML
Reference to an origin 349629
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
--.ERC.Z. 1998-08-27T07:00:01.00 10.0 undecidable manual PN 284 1.9536 0.41 0.8
--.SC9.Z. 1998-08-27T06:59:59.37 10.0 undecidable manual SG 39 0.888 1.03 0.2
--.GRI.Z. 1998-08-27T06:59:57.67 10.0 undecidable manual PN 41 1.6761 0.93 0.4
--.MO9.Z. 1998-08-27T06:59:55.69 10.0 undecidable manual SG! 51 0.6882 3.48 0
--.SOI.Z. 1998-08-27T06:59:46.38 10.0 undecidable manual PG 58 0.9657 -0.21 1.5
--.MNO.Z. 1998-08-27T06:59:45.10 10.0 undecidable manual SG 326 0.4329 1.28 0.1
--.SC9.Z. 1998-08-27T06:59:44.24 10.0 undecidable manual PG 39 0.888 -0.79 0.7
--.GIB.Z. 1998-08-27T06:59:44.74 10.0 undecidable manual PG 299 0.8769 0.02 1.6
--.GMB.Z. 1998-08-27T06:59:44.90 10.0 undecidable manual PG 47 0.8769 -0.08 1.6
--.CS9.Z. 1998-08-27T06:59:43.86 10.0 undecidable manual PG 297 0.8214 0.16 1.6
--.AU9.Z. 1998-08-27T06:59:42.34 10.0 undecidable manual SG 150 0.3552 1.49 0
--.MSI.Z. 1998-08-27T06:59:42.00 10.0 undecidable manual PG 34 0.7659 -0.83 0.7
--.MO9.Z. 1998-08-27T06:59:41.44 10.0 undecidable manual PG 51 0.6882 -0.05 1.7
--.PZI.Z. 1998-08-27T06:59:37.72 10.0 undecidable manual PG 184 0.5106 -0.31 1.5
--.MNO.Z. 1998-08-27T06:59:36.31 10.0 undecidable manual PG 326 0.4329 -0.28 1.5
--.MEU.Z. 1998-08-27T06:59:36.47 10.0 undecidable manual PG 196 0.4662 -0.85 0.7
--.AU9.Z. 1998-08-27T06:59:35.27 10.0 undecidable manual PG 150 0.3552 0.33 1.5
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