A magnitude ML 2.1 earthquake occured in region: Tirreno Meridionale (MARE), on
and geographic coordinates (lat, lon) 38.7770, 13.9240 at 21 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.
No Italian municipalities within 20 km distance.
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
ML 2.1 | 2021-04-30 18:30:50 |
38.7768 | 13.9238 | 21 | 2021-07-12 16:55:12 |
Bollettino Sismico Italiano INGV | 90507381 |
Reviewed Rev100 |
ML 2.3 | 2021-04-30 18:30:50 |
38.7037 | 13.9115 | 7 | 2021-04-30 18:44:50 |
Sala Sismica INGV-Roma | 89635861 |
Field | Value |
---|---|
Time (UTC) | 2021-04-30 18:30:50 ± 0.36 |
Latitude | 38.7768 ± 0.0288 |
Longitude | 13.9238 ± 0.0150 |
Depth (km) | 21 ± 3 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | earthquake |
Origin ID | 90507381 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 3047 |
Semi-minor axis of confidence ellipse (meter) | 1202 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 16 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 3050.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 209 |
Number of associated phases, regardless of their use for origin computation | 28 |
Number of defining phases | 16 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.37 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 1.61069 |
Number of stations at which the event was observed | 25 |
Number of stations from which data was used for origin computation | 13 |
Field | Value |
---|---|
Value | 2.1 |
Uncertainty | 0.4 |
Num. used stations | 14 |
Type of magnitude | ML |
Reference to an origin | 90507381 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2021-06-30 13:35:33 |
Field | Value |
---|---|
Value | 2.3 |
Uncertainty | 0.5 |
Num. used stations | 20 |
Type of magnitude | ML |
Reference to an origin | 89635861 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-04-30 18:44:50 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.PESA.HHZ. | 2021-04-30T18:32:35.58 | 3.0 | undecidable | manual | Sn | -9.99 | 0 | |||
IV.PE3.EHZ. | 2021-04-30T18:32:31.26 | 3.0 | undecidable | manual | Sn | -9.99 | 0 | |||
IV.MTRA.EHZ. | 2021-04-30T18:32:31.24 | 3.0 | undecidable | manual | Sg | 4.9 | 0 | |||
IV.SSFR.HHZ. | 2021-04-30T18:32:29.75 | 3.0 | undecidable | manual | Sn | -9.99 | 0 | |||
MN.TRI.HHZ. | 2021-04-30T18:32:29.38 | 3.0 | negative | manual | P | -4.05 | 0 | |||
IV.TOLF.HHZ. | 2021-04-30T18:32:13.76 | 3.0 | undecidable | manual | Sg | -3.41 | 0 | |||
IV.CAVE.HHZ. | 2021-04-30T18:32:06.94 | 3.0 | positive | manual | P | -9.99 | 0 | |||
IV.RMP.HHZ. | 2021-04-30T18:32:05.41 | 3.0 | undecidable | manual | Sg | -1.07 | 0 | |||
IV.COR1.EHZ. | 2021-04-30T18:31:55.98 | 3.0 | positive | manual | P | -9.46 | 0 | |||
IV.MF5.EHZ. | 2021-04-30T18:31:54.47 | 3.0 | undecidable | manual | P | -1.59 | 0 | |||
IV.SENI.HNZ. | 2021-04-30T18:31:48.01 | 3.0 | positive | manual | P | -9.99 | 0 | |||
IV.LAV9.HHZ. | 2021-04-30T18:31:27.82 | 3.0 | negative | manual | P | -9.99 | 0 | |||
IV.HLNI.HHZ. | 2021-04-30T18:31:18.02 | 0.3 | undecidable | manual | P | 152 | 178.7877 | 54 | -0.08 | 54 |
IV.RAFF.HHZ. | 2021-04-30T18:31:18.54 | 0.3 | undecidable | manual | P | 167 | 176.5899 | 54 | 0.71 | 46 |
IV.USI.HHZ. | 2021-04-30T18:31:10.71 | 1.0 | undecidable | manual | S | 263 | 64.8906 | 101 | 0.54 | 22 |
IV.PETRA.HHN. | 2021-04-30T18:31:09.02 | 0.6 | undecidable | manual | P | 171 | 105.9162 | 96 | 1.05 | 33 |
IV.IFIL.HHZ. | 2021-04-30T18:31:09.46 | 0.6 | undecidable | manual | S | 112 | 61.1943 | 102 | 0.26 | 48 |
IV.MUCR.HHZ. | 2021-04-30T18:31:08.82 | 0.3 | undecidable | manual | P | 134 | 115.995 | 96 | -0.69 | 57 |
IV.MCPD.HHZ. | 2021-04-30T18:31:06.77 | 0.3 | undecidable | manual | P | 136 | 101.121 | 97 | -0.46 | 63 |
IV.MSFR.HHZ. | 2021-04-30T18:31:06.70 | 0.3 | undecidable | manual | P | 145 | 100.8213 | 97 | -0.48 | 63 |
IV.PLLN.EHN. | 2021-04-30T18:31:05.72 | 0.6 | undecidable | manual | P | 168 | 89.0442 | 98 | 0.33 | 44 |
IV.IACL.HHZ. | 2021-04-30T18:31:05.68 | 0.6 | undecidable | manual | S | 126 | 46.1205 | 106 | 0.38 | 48 |
IV.CSLB.HHZ. | 2021-04-30T18:31:05.58 | 0.3 | undecidable | manual | P | 173 | 93.8394 | 97 | -0.54 | 63 |
IV.SOLUN.HHE. | 2021-04-30T18:31:04.73 | 0.3 | undecidable | manual | P | 204 | 83.25 | 98 | 0.23 | 69 |
IV.MPG.HHZ. | 2021-04-30T18:31:03.85 | 0.6 | undecidable | manual | P | 216 | 83.9493 | 98 | -0.76 | 39 |
IV.IFIL.HHZ. | 2021-04-30T18:31:01.20 | 0.3 | undecidable | manual | P | 112 | 61.1943 | 102 | 0.06 | 74 |
IV.USI.HHZ. | 2021-04-30T18:31:01.85 | 0.3 | undecidable | manual | P | 263 | 64.8906 | 101 | 0.14 | 72 |
IV.IACL.HHZ. | 2021-04-30T18:30:59.04 | 0.1 | undecidable | manual | P | 126 | 46.1205 | 106 | 0.14 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.IACL.HHN. | ML:2.3 | 0.0005335 | 1.2 | AML | other | m | 2021-04-30T18:31:06.23 |
IV.IACL.HHE. | ML:2.4 | 0.000717 | 0.42 | AML | other | m | 2021-04-30T18:31:08.39 |
IV.IFIL.HHE. | ML:2.6 | 0.0008925000000000001 | 0.84 | AML | other | m | 2021-04-30T18:31:13.44 |
IV.IFIL.HHN. | ML:2.4 | 0.00042449999999999996 | 0.28 | AML | other | m | 2021-04-30T18:31:13.58 |
IV.USI.HHE. | ML:1.6 | 0.00007335 | 0.86 | AML | other | m | 2021-04-30T18:31:14.77 |
IV.USI.HHN. | ML:2.2 | 0.00029049999999999996 | 1.58 | AML | other | m | 2021-04-30T18:31:15.11 |
IV.CSLB.HHN. | ML:1.8 | 0.00006984999999999999 | 1.18 | AML | other | m | 2021-04-30T18:31:21.61 |
IV.CSLB.HHE. | ML:1.6 | 0.000046899999999999995 | 0.62 | AML | other | m | 2021-04-30T18:31:22.00 |
IV.MCPD.HHE. | ML:1.6 | 0.000032550000000000005 | 0.52 | AML | other | m | 2021-04-30T18:31:23.38 |
IV.MCPD.HHN. | ML:1.6 | 0.0000363 | 0.74 | AML | other | m | 2021-04-30T18:31:26.77 |
IV.MUCR.HHN. | ML:2.1 | 0.0001004 | 0.46 | AML | other | m | 2021-04-30T18:31:30.20 |
IV.MUCR.HHE. | ML:2.0 | 0.000068 | 0.84 | AML | other | m | 2021-04-30T18:31:30.52 |
IV.MTGR.HHN. | ML:2.5 | 0.00016350000000000002 | 0.58 | AML | other | m | 2021-04-30T18:32:01.69 |
IV.MTGR.HHE. | ML:2.5 | 0.0001699 | 1.28 | AML | other | m | 2021-04-30T18:32:02.96 |