Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.8 on date 28-09-1999 and time 01:29:32 (Italy) in region NE Torre di Ruggiero (CZ)

A magnitude Md 2.8 earthquake occured in region: NE Torre di Ruggiero (CZ), on

  • 27-09-1999 23:29:32 (UTC)
  • 28-09-1999 01:29:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.6570, 16.3770 at 24 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
Torre di Ruggiero CZ 0 1033 1033
Cardinale CZ 2 2188 3221
Chiaravalle Centrale CZ 5 5759 8980
Argusto CZ 6 522 9502
Simbario VV 6 966 10468
San Vito sullo Ionio CZ 7 1811 12279
Brognaturo VV 7 735 13014
Spadola VV 7 825 13839
Vallelonga VV 7 706 14545
Cenadi CZ 7 563 15108
San Nicola da Crissa VV 8 1335 16443
Gagliato CZ 8 505 16948
Capistrano VV 9 1042 17990
Olivadi CZ 9 529 18519
Centrache CZ 9 401 18920
Satriano CZ 9 3448 22368
Davoli CZ 10 5607 27975
San Sostene CZ 10 1370 29345
Petrizzi CZ 10 1131 30476
Serra San Bruno VV 10 6734 37210
Monterosso Calabro VV 10 1729 38939
Pizzoni VV 12 1143 40082
Vazzano VV 12 1067 41149
Polia VV 12 1023 42172
Palermiti CZ 12 1213 43385
Filogaso VV 13 1417 44802
Montepaone CZ 13 5282 50084
Sant'Andrea Apostolo dello Ionio CZ 14 1937 52021
Isca sullo Ionio CZ 14 1633 53654
Soriano Calabro VV 14 2421 56075
Sorianello VV 14 1176 57251
Gasperina CZ 15 2160 59411
Vallefiorita CZ 15 1771 61182
Gerocarne VV 16 2248 63430
Soverato CZ 16 9204 72634
Montauro CZ 16 1732 74366
Filadelfia VV 16 5384 79750
Badolato CZ 16 3085 82835
Francavilla Angitola VV 16 1939 84774
Amaroni CZ 17 1855 86629
Mongiana VV 17 740 87369
Maierato VV 17 2188 89557
Arena VV 18 1456 91013
Santa Caterina dello Ionio CZ 18 2175 93188
Dasà VV 19 1208 94396
Squillace CZ 19 3608 98004
Stalettì CZ 19 2433 100437
Girifalco CZ 19 5945 106382
Acquaro VV 20 2484 108866
Curinga CZ 20 6779 115645

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km SW of Catanzaro (90612 inhabitants)
36 Km S of Lamezia Terme (70714 inhabitants)
72 Km S of Cosenza (67546 inhabitants)
80 Km SW of Crotone (62178 inhabitants)
88 Km NE of Messina (238439 inhabitants)
88 Km NE of Reggio di Calabria (183035 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 2.8
ML-VAX 2.2 		1999-09-27
23:29:32		 38.657 16.377 24 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 374329
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1999-09-27 23:29:32 ± 0.151
Latitude 38.6570 ± 0.0101
Longitude 16.3770 ± 0.0211
Depth (km) 24 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 374329

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) 2154.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 126
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 29
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) 0.00146
Epicentral distance of station farthest from the epicenter (degree) 0.02186
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitudes information

Md:2.8

Field Value
Value 2.8
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 374329
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:51:25

ML:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 6
Type of magnitude ML
Reference to an origin 374329
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
--.SGO.Z. 1999-09-27T23:30:29.89 10.0 undecidable manual SN 336 2.0646 0.27 0.3
--.CI9.Z. 1999-09-27T23:30:10.60 10.0 undecidable manual PN 335 2.4309 0.09 0.8
--.MU9.Z. 1999-09-27T23:30:08.43 10.0 undecidable manual PN 342 2.1978 1 0.2
--.SA1.Z. 1999-09-27T23:30:08.73 10.0 undecidable manual SN 266 1.1988 -0.38 0.4
--.SGO.Z. 1999-09-27T23:30:05.17 10.0 undecidable manual PN 336 2.0646 -0.34 0.8
--.TDS.Z. 1999-09-27T23:30:05.47 10.0 undecidable manual SN 358 0.999 1.27 0.1
--.SL9.Z. 1999-09-27T23:30:01.26 10.0 undecidable manual PN 341 1.8204 -0.87 0.3
--.ACI.Z. 1999-09-27T23:29:58.39 10.0 undecidable manual SN 349 0.6993 1.23 0.1
--.MSI.Z. 1999-09-27T23:29:57.86 10.0 undecidable manual SN 235 0.777 -1.2 0.1
--.ORI.Z. 1999-09-27T23:29:56.19 10.0 undecidable manual PN 2 1.3875 -0.02 1.2
--.CZI.Z. 1999-09-27T23:29:54.34 10.0 undecidable manual SG 341 0.5883 0.28 0.5
--.SOI.Z. 1999-09-27T23:29:54.94 10.0 undecidable manual SG 203 0.6327 -0.45 0.4
--.SA1.Z. 1999-09-27T23:29:53.38 10.0 undecidable manual PN 266 1.1988 -0.3 1.1
--.CSI.Z. 1999-09-27T23:29:53.68 10.0 undecidable manual PN 356 1.1211 1.11 0.2
--.ROI.Z. 1999-09-27T23:29:50.10 10.0 undecidable manual PN 9 0.9213 0.31 1.3
--.TDS.Z. 1999-09-27T23:29:50.63 10.0 undecidable manual PN 358 0.999 -0.21 1.3
--.SE2.Z. 1999-09-27T23:29:48.96 10.0 undecidable manual SG 37 0.444 -0.48 0.4
--.MSI.Z. 1999-09-27T23:29:47.76 10.0 undecidable manual PN 235 0.777 -0.12 1.5
--.DR2.Z. 1999-09-27T23:29:47.31 10.0 undecidable manual SG 268 0.3441 0.63 0.3
--.FE2.Z. 1999-09-27T23:29:46.28 10.0 positive manual PN 200 0.6549 0.17 2.9
--.ACI.Z. 1999-09-27T23:29:46.60 10.0 positive manual PN 349 0.6993 -0.17 2.9
--.SOI.Z. 1999-09-27T23:29:45.28 10.0 undecidable manual PG 203 0.6327 -0.48 1.1
--.CZI.Z. 1999-09-27T23:29:44.28 10.0 positive manual PG 341 0.5883 -0.71 1.4
--.GRI.Z. 1999-09-27T23:29:43.24 10.0 undecidable manual SG 11 0.1665 1.14 0.1
--.PA2.Z. 1999-09-27T23:29:43.57 10.0 undecidable manual SG 163 0.1887 0.9 0.2
--.DR2.Z. 1999-09-27T23:29:41.00 10.0 positive manual PG 268 0.3441 0.27 2.7
--.SE2.Z. 1999-09-27T23:29:41.50 10.0 positive manual PG 37 0.444 -0.83 1.1
--.GRI.Z. 1999-09-27T23:29:38.20 10.0 positive manual PG 11 0.1665 0.12 2.9
--.PA2.Z. 1999-09-27T23:29:38.79 10.0 positive manual PG 163 0.1887 0.38 2.4
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