Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 05-04-2023 and time 07:28:37 (Italy) in region Altomonte (CS)

A magnitude ML 1.7 earthquake occured in region: Altomonte (CS), on

  • 05-04-2023 05:28:37 (UTC)
  • 05-04-2023 07:28:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 39.7010, 16.1320 at 58 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
Altomonte CS 0 4488 4488
Acquaformosa CS 4 1106 5594
Firmo CS 5 2115 7709
Lungro CS 5 2592 10301
San Donato di Ninea CS 7 1360 11661
Mottafollone CS 8 1236 12897
Saracena CS 9 3828 16725
Roggiano Gravina CS 10 7208 23933
San Sosti CS 10 2185 26118
San Basile CS 13 1055 27173
Malvito CS 13 1795 28968
Santa Caterina Albanese CS 14 1222 30190
Castrovillari CS 14 22240 52430
San Lorenzo del Vallo CS 14 3394 55824
Tarsia CS 15 2054 57878
Sant'Agata di Esaro CS 16 1890 59768
Spezzano Albanese CS 16 7028 66796
Morano Calabro CS 16 4576 71372
San Marco Argentano CS 16 7424 78796
Fagnano Castello CS 17 3885 82681
Cervicati CS 18 829 83510
Cassano all'Ionio CS 19 18495 102005
Terranova da Sibari CS 19 5100 107105
Frascineto CS 19 2154 109259
Mongrassano CS 19 1607 110866
Verbicaro CS 20 3056 113922

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km N of Cosenza (67546 inhabitants)
82 Km N of Lamezia Terme (70714 inhabitants)
97 Km NW of Catanzaro (90612 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.7 2023-04-05
05:28:37		 39.7007 16.1322 58 2024-03-01
17:18:06		 Bollettino Sismico Italiano INGV 117022101
Reviewed
Rev100 		ML 2.0 2023-04-05
05:28:37		 39.7002 16.1312 59 2023-04-05
05:36:09		 Sala Sismica INGV-Roma 116080111
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-05 05:28:37 ± 0.31
Latitude 39.7007 ± 0.0117
Longitude 16.1322 ± 0.0175
Depth (km) 58 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 117022101

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1519
Semi-minor axis of confidence ellipse (meter) 278
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 247
Circular confidence region, given by single value of horizontal uncertainty (meter) 1520.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 62
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.62233
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 117022101
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2024-01-08 17:42:27

ML:2.0

Field Value
Value 2.0
Uncertainty 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 116080111
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-05 05:36:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.RORO.HHZ. 2023-04-05T05:30:31.59 3.0 undecidable manual Pn 8.9 0
IV.CELB.HHZ. 2023-04-05T05:30:15.66 3.0 positive manual Pg 21.17 0
IV.MBFT.HHZ. 2023-04-05T05:30:13.98 3.0 undecidable manual Sg 14.87 0
MN.KLV.HHZ. 2023-04-05T05:30:10.07 3.0 negative manual Pg 21.280001 0
CR.STON.BHZ. 2023-04-05T05:30:06.50 3.0 undecidable manual Sn 1.32 0
IV.CSNT.HHZ. 2023-04-05T05:30:06.51 3.0 negative manual Pg 14.5 0
IT.FIE.HGZ. 2023-04-05T05:30:01.79 3.0 undecidable manual Pn 6.57 0
IV.NARO.HHZ. 2023-04-05T05:30:00.66 3.0 negative manual Pg 15.7 0
IV.LPEL.HHZ. 2023-04-05T05:29:49.94 3.0 undecidable manual Sn -1.01 0
HL.ITM.HHZ. 2023-04-05T05:29:49.66 3.0 positive manual Pn -2.23 0
IV.GUMA.HHZ. 2023-04-05T05:29:40.78 3.0 negative manual Pn 6.27 0
IT.LRNO.HNZ. 2023-04-05T05:29:39.92 3.0 undecidable manual Sn 0.52 0
IV.ARRO.EHZ. 2023-04-05T05:29:39.64 3.0 positive manual Pn 6.74 0
IV.LRP.EHZ. 2023-04-05T05:29:17.76 3.0 negative manual Pn -0.28 0
IV.GATE.HHZ. 2023-04-05T05:29:07.67 3.0 positive manual Pn -0.64 0
IV.MGR.HHZ. 2023-04-05T05:29:01.10 0.3 undecidable manual S 315 69.0753 120 -0.13 67
IV.SIRI.HHZ. 2023-04-05T05:28:59.50 0.6 undecidable manual S 337 57.9975 126 0.29 46
IV.CAR1.HHZ. 2023-04-05T05:28:57.40 0.3 undecidable manual S 172 50.1165 131 -0.48 68
XE.BIDON.HHZ. 2023-04-05T05:28:56.60 0.6 undecidable manual S 45 38.7279 139 0.45 45
XE.MORMA.HHE. 2023-04-05T05:28:54.40 0.3 undecidable manual S 324 23.1546 154 0.1 76
IV.CET2.HHZ. 2023-04-05T05:28:54.70 0.3 undecidable manual S 219 24.3534 153 0.28 72
IV.TDS.HHZ. 2023-04-05T05:28:54.92 0.6 undecidable manual S 104 18.0708 159 1.05 35
IV.SALB.HHZ. 2023-04-05T05:28:54.40 0.3 undecidable manual S 43 26.751 150 -0.26 74
IV.GRIS.EHZ. 2023-04-05T05:28:53.90 0.3 undecidable manual S 281 24.2535 153 -0.5 68
IV.MGR.HHZ. 2023-04-05T05:28:50.98 1.0 undecidable manual P 315 69.0753 120 -0.35 22
IV.SIRI.HHZ. 2023-04-05T05:28:50.77 0.3 undecidable manual P 337 57.9975 126 0.61 64
IV.CAR1.HHZ. 2023-04-05T05:28:49.13 0.6 undecidable manual P 172 50.1165 131 -0.26 47
IV.CELI.HHZ. 2023-04-05T05:28:49.34 0.3 undecidable manual P 136 46.1205 134 0.31 69
IV.TDS.HHZ. 2023-04-05T05:28:47.22 0.1 undecidable manual P 104 18.0708 159 0.15 100
IV.SALB.HHZ. 2023-04-05T05:28:47.12 0.1 undecidable manual P 43 26.751 150 -0.41 94
XE.BIDON.HHZ. 2023-04-05T05:28:47.79 0.3 undecidable manual P 45 38.7279 139 -0.6 66
IV.GRIS.EHZ. 2023-04-05T05:28:47.08 0.3 undecidable manual P 281 24.2535 153 -0.3 72
XE.TNOVA.HNE. 2023-04-05T05:28:47.59 0.3 undecidable manual P 20 32.3454 145 -0.31 71
IV.CET2.HHZ. 2023-04-05T05:28:47.55 0.3 undecidable manual P 219 24.3534 153 0.16 75
XE.MORMA.HHE. 2023-04-05T05:28:47.90 0.3 undecidable manual P 324 23.1546 154 0.57 68
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CET2.HHN. ML:2.0 0.0002155 0.62 AML other m 2023-04-05T05:28:55.46
IV.GRIS.EHN. ML:1.3 0.00003837032 0.16 AML other m 2023-04-05T05:28:55.25
IV.CET2.HHE. ML:1.9 0.000146 0.12 AML other m 2023-04-05T05:28:55.19
IV.SALB.HHE. ML:1.8 0.00011030000000000001 0.24 AML other m 2023-04-05T05:28:55.45
IV.SALB.HHN. ML:1.6 0.00007645 0.58 AML other m 2023-04-05T05:28:55.64
IV.GRIS.EHE. ML:1.6 0.00007738596999999999 1.4816 AML other m 2023-04-05T05:28:55.94
IV.CAR1.HHN. ML:1.6 0.000055571579999999994 4.5376 AML other m 2023-04-05T05:28:58.13
IV.CAR1.HHE. ML:1.7 0.000079406515 1.2608 AML other m 2023-04-05T05:29:00.07
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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