Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 27-03-2021 and time 17:42:35 (Italy) in region Adriatico Centrale (MARE)

A magnitude ML 2.3 earthquake occured in region: Adriatico Centrale (MARE), on

  • 27-03-2021 16:42:35 (UTC)
  • 27-03-2021 17:42:35 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.5910, 16.1560 at 8 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

No Italian municipalities within 100 km from the epicenter with at least 50000 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 2.3 2021-03-27
16:42:35		 42.5907 16.1563 8 2021-07-12
16:55:08		 Bollettino Sismico Italiano INGV 89490741
Reviewed
Rev100 		ML 2.4 2021-03-27
16:42:33		 42.7658 16.1468 10 2021-03-27
16:48:12		 Sala Sismica INGV-Roma 88526641
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-27 16:42:35 ± 0.27
Latitude 42.5907 ± 0.0108
Longitude 16.1563 ± 0.0232
Depth (km) 8 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 89490741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1890
Semi-minor axis of confidence ellipse (meter) 1230
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 265
Circular confidence region, given by single value of horizontal uncertainty (meter) 1890.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 287
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.66820
Epicentral distance of station farthest from the epicenter (degree) 1.76177
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 89490741
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-07-07 16:59:13

ML:2.4

Field Value
Value 2.4
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 88526641
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-27 16:48:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
OT.OT07.EHE. 2021-03-27T16:43:09.84 0.6 undecidable manual S 199 113.3976 50 0.48 58
IV.INTR.HHE. 2021-03-27T16:43:08.12 1.0 undecidable manual P 252 195.5598 38 0.72 20
OT.OT12.EHZ. 2021-03-27T16:43:08.27 0.3 undecidable manual S 191 108.3138 50 0.26 92
OT.OT06.EHE. 2021-03-27T16:43:08.28 0.6 undecidable manual S 205 110.5005 50 -0.32 60
IV.APRC.HHZ. 2021-03-27T16:43:07.98 0.6 undecidable manual S 209 105.3168 50 0.78 53
OT.OT03.EHE. 2021-03-27T16:43:07.59 0.3 undecidable manual S 203 106.0161 50 0.2 94
OT.OT04.EHE. 2021-03-27T16:43:07.98 0.6 undecidable manual S 206 107.6145 50 0.16 63
IV.RNI2.HNE. 2021-03-27T16:43:07.44 0.3 undecidable manual P 240 191.9634 38 0.49 65
IV.MSAG.HHZ. 2021-03-27T16:43:05.84 0.3 undecidable manual S 192 99.5226 50 0.17 96
IV.SGRT.HHZ. 2021-03-27T16:43:05.28 0.3 undecidable manual S 200 98.7234 50 -0.18 96
IV.SACR.HNN. 2021-03-27T16:43:05.17 0.6 undecidable manual P 223 178.3881 50 -0.09 51
IV.MRVN.HHZ. 2021-03-27T16:43:04.21 0.6 undecidable manual P 179 169.6968 50 0.28 51
IV.LPEL.HHE. 2021-03-27T16:43:04.77 0.6 undecidable manual P 250 172.6938 50 0.38 49
IV.BSSO.HHE. 2021-03-27T16:43:04.54 0.6 undecidable manual P 229 173.0934 50 0.09 52
IV.TST01.HHZ. 2021-03-27T16:43:04.40 0.6 undecidable manual P 238 172.8936 50 -0.01 53
IV.TRIV.HHN. 2021-03-27T16:43:03.53 0.6 undecidable manual P 236 160.617 50 1.01 41
IV.MOCO.HNE. 2021-03-27T16:43:02.15 0.6 undecidable manual P 212 158.4192 50 -0.04 57
IV.CIGN.HHN. 2021-03-27T16:43:00.28 0.3 undecidable manual P 225 146.2425 50 -0.03 89
OT.OT14.EHZ. 2021-03-27T16:43:00.18 0.6 undecidable manual S 195 79.6647 50 -0.18 66
IV.TREM.HNZ. 2021-03-27T16:42:58.02 0.6 undecidable manual S 226 74.1702 50 -0.87 53
IV.MELA.HHZ. 2021-03-27T16:42:58.05 0.6 undecidable manual P 221 129.5703 50 0.31 58
OT.OT12.EHZ. 2021-03-27T16:42:54.56 0.3 undecidable manual P 191 108.3138 50 0.1 95
OT.OT06.EHE. 2021-03-27T16:42:54.12 0.3 undecidable manual P 205 110.5005 50 -0.68 81
OT.OT07.EHE. 2021-03-27T16:42:54.68 0.3 undecidable manual P 199 113.3976 50 -0.56 85
OT.OT03.EHE. 2021-03-27T16:42:54.35 0.3 undecidable manual P 203 106.0161 50 0.25 93
IV.APRC.HHZ. 2021-03-27T16:42:54.38 0.3 undecidable manual P 209 105.3168 50 0.38 91
OT.OT05.EHE. 2021-03-27T16:42:54.84 0.3 undecidable manual P 204 112.8981 50 -0.33 90
OT.OT04.EHE. 2021-03-27T16:42:53.78 0.3 undecidable manual P 206 107.6145 50 -0.57 85
IV.MSAG.HHZ. 2021-03-27T16:42:53.00 0.3 undecidable manual P 192 99.5226 50 -0.11 97
IV.SGRT.HHZ. 2021-03-27T16:42:52.35 0.3 undecidable manual P 200 98.7234 50 -0.64 85
OT.OT13.EHZ. 2021-03-27T16:42:50.40 0.3 undecidable manual P 179 78.7656 50 0.49 93
OT.OT14.EHZ. 2021-03-27T16:42:49.89 0.3 undecidable manual P 195 79.6647 50 -0.16 100
IV.TREM.HNZ. 2021-03-27T16:42:48.39 1.0 undecidable manual P 226 74.1702 50 -0.81 28
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SGRT.HHE. ML:2.3 0.00020093455 0.384 AML other m 2021-03-27T16:43:08.50
IV.APRC.HHN. ML:2.6 0.000395 0.32 AML other m 2021-03-27T16:43:09.64
OT.OT12.EHN. ML:2.2 0.00012448746500000001 0.3328 AML other m 2021-03-27T16:43:09.43
IV.APRC.HHE. ML:2.4 0.0002255 0.24 AML other m 2021-03-27T16:43:10.75
IV.SGRT.HHN. ML:2.1 0.0001352739 0.4736 AML other m 2021-03-27T16:43:11.54
OT.OT12.EHE. ML:2.0 0.000089290985 0.3584 AML other m 2021-03-27T16:43:12.92
IV.MSAG.HNE. ML:2.2 0.00014696545 0.4352 AML other m 2021-03-27T16:43:13.65
IV.MSAG.HNN. ML:2.6 0.00036798415 0.6656 AML other m 2021-03-27T16:43:13.37
IV.MSAG.HHE. ML:1.8 0.000059449729999999996 0.4224 AML other m 2021-03-27T16:43:13.64
IV.MSAG.HHN. ML:2.2 0.00015236050000000002 0.6784 AML other m 2021-03-27T16:43:13.70
IV.APRC.HNE. ML:2.4 0.0002575097 0.4608 AML other m 2021-03-27T16:43:13.25
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