A magnitude ML 1.8 earthquake occured in region: 4 km SW Marradi (FI), on
and geographic coordinates (lat, lon) 44.0400, 11.5880 at 9 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.
Municipality | Region | Distance (km) | Inhabitants | Cumulative Inhabitants |
---|---|---|---|---|
Marradi | FI | 5 | 3139 | 3139 |
Palazzuolo sul Senio | FI | 9 | 1154 | 4293 |
San Godenzo | FI | 13 | 1167 | 5460 |
Tredozio | FC | 13 | 1212 | 6672 |
Vicchio | FI | 15 | 8044 | 14716 |
Portico e San Benedetto | FC | 16 | 756 | 15472 |
Premilcuore | FC | 17 | 799 | 16271 |
Dicomano | FI | 17 | 5515 | 21786 |
Borgo San Lorenzo | FI | 19 | 18211 | 39997 |
Firenzuola | FI | 19 | 4726 | 44723 |
Londa | FI | 20 | 1840 | 46563 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
ML 1.8 | 2020-10-18 21:13:27 |
44.0405 | 11.5878 | 9 | 2021-02-26 14:56:06 |
Bollettino Sismico Italiano INGV | 84771431 |
Reviewed Rev100 |
ML 1.8 | 2020-10-18 21:13:27 |
44.044 | 11.587 | 9 | 2020-10-18 21:23:22 |
Sala Sismica INGV-Roma | 83893261 |
Field | Value |
---|---|
Time (UTC) | 2020-10-18 21:13:27 ± 0.06 |
Latitude | 44.0405 ± 0.0036 |
Longitude | 11.5878 ± 0.0050 |
Depth (km) | 9 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | earthquake |
Origin ID | 84771431 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 356 |
Semi-minor axis of confidence ellipse (meter) | 293 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 36 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 390.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 77 |
Number of associated phases, regardless of their use for origin computation | 32 |
Number of defining phases | 29 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.27 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.82917 |
Number of stations at which the event was observed | 25 |
Number of stations from which data was used for origin computation | 22 |
Field | Value |
---|---|
Value | 1.8 |
Uncertainty | 0.2 |
Num. used stations | 24 |
Type of magnitude | ML |
Reference to an origin | 84771431 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2020-11-16 12:42:51 |
Field | Value |
---|---|
Value | 1.8 |
Uncertainty | 0.2 |
Num. used stations | 26 |
Type of magnitude | ML |
Reference to an origin | 83893261 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2020-10-18 21:23:22 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.SRES.HHZ. | 2020-10-18T21:14:26.53 | 3.0 | undecidable | manual | Sg | 1.43 | 0 | |||
MN.TRI.HHZ. | 2020-10-18T21:14:06.10 | 3.0 | positive | manual | Pn | 1.5 | 0 | |||
IV.PII.HHZ. | 2020-10-18T21:13:44.24 | 0.3 | undecidable | manual | P | 248 | 92.0412 | 50 | 0.64 | 56 |
IV.PE3.EHZ. | 2020-10-18T21:13:42.47 | 0.3 | undecidable | manual | P | 117 | 82.0512 | 50 | 0.41 | 62 |
IV.CSNT.HHZ. | 2020-10-18T21:13:40.21 | 0.3 | undecidable | manual | P | 201 | 67.2771 | 50 | 0.43 | 63 |
IV.PARC.HHZ. | 2020-10-18T21:13:39.57 | 0.3 | undecidable | manual | P | 130 | 67.7766 | 50 | -0.29 | 65 |
GU.POPM.HHZ. | 2020-10-18T21:13:39.57 | 0.3 | undecidable | manual | P | 271 | 66.2781 | 50 | -0.05 | 69 |
IV.SSP9.EHZ. | 2020-10-18T21:13:39.96 | 0.3 | undecidable | manual | P | 140 | 67.5768 | 50 | 0.13 | 68 |
IV.CRMI.HNZ. | 2020-10-18T21:13:38.25 | 0.3 | undecidable | manual | P | 241 | 55.6998 | 50 | 0.25 | 67 |
IV.BRIS.HHZ. | 2020-10-18T21:13:37.49 | 0.6 | undecidable | manual | S | 35 | 24.8529 | 110 | 0.6 | 43 |
IV.FIR.HHZ. | 2020-10-18T21:13:36.75 | 3.0 | undecidable | manual | P | 0 | ||||
IV.RUFI.EHZ. | 2020-10-18T21:13:36.51 | 0.6 | undecidable | manual | S | 196 | 23.3544 | 111 | 0.12 | 49 |
IV.SFI.EHZ. | 2020-10-18T21:13:36.81 | 0.3 | undecidable | manual | S | 126 | 25.5522 | 109 | -0.31 | 70 |
IV.FNVD.HHZ. | 2020-10-18T21:13:35.19 | 0.1 | undecidable | manual | P | 291 | 39.627 | 50 | -0.33 | 91 |
IV.VISG.HHZ. | 2020-10-18T21:13:35.32 | 0.3 | undecidable | manual | S | 323 | 20.4684 | 114 | -0.16 | 73 |
IV.FAEN.HNZ. | 2020-10-18T21:13:35.75 | 0.3 | undecidable | manual | P | 40 | 35.9418 | 50 | 0.8 | 59 |
IV.MPPT.EHZ. | 2020-10-18T21:13:35.46 | 0.1 | undecidable | manual | P | 257 | 40.7259 | 50 | -0.23 | 93 |
IV.MOCL.EHZ. | 2020-10-18T21:13:34.24 | 0.1 | undecidable | manual | P | 263 | 32.745 | 50 | -0.21 | 94 |
IV.IMOL.HNE. | 2020-10-18T21:13:34.77 | 0.3 | undecidable | manual | P | 19 | 37.4292 | 50 | -0.41 | 67 |
IT.FIE.HGE. | 2020-10-18T21:13:34.63 | 0.1 | undecidable | manual | P | 222 | 34.9428 | 50 | -0.16 | 95 |
IV.RINC.HHZ. | 2020-10-18T21:13:34.59 | 0.3 | undecidable | manual | S | 175 | 17.1717 | 118 | 0.16 | 73 |
IV.MTRZ.HNZ. | 2020-10-18T21:13:34.80 | 0.3 | undecidable | manual | P | 337 | 32.8449 | 50 | 0.32 | 69 |
IV.SEI.HHZ. | 2020-10-18T21:13:34.70 | 0.3 | undecidable | manual | S | 275 | 18.3705 | 116 | -0.1 | 74 |
IV.RONT.HHZ. | 2020-10-18T21:13:33.53 | 0.1 | undecidable | manual | S | 247 | 13.3755 | 124 | 0.22 | 97 |
IV.ASQU.HHZ. | 2020-10-18T21:13:33.94 | 0.1 | undecidable | manual | P | 149 | 31.4463 | 50 | -0.33 | 92 |
IV.BRIS.HHZ. | 2020-10-18T21:13:32.97 | 0.1 | undecidable | manual | P | 35 | 24.8529 | 110 | -0.05 | 99 |
IV.SFI.EHZ. | 2020-10-18T21:13:32.87 | 0.1 | positive | manual | P | 126 | 25.5522 | 109 | -0.28 | 94 |
IV.VISG.HHZ. | 2020-10-18T21:13:32.01 | 0.1 | negative | manual | P | 323 | 20.4684 | 114 | -0.19 | 97 |
IV.RUFI.EHZ. | 2020-10-18T21:13:32.64 | 0.1 | positive | manual | P | 196 | 23.3544 | 111 | -0.08 | 99 |
IV.RINC.HHZ. | 2020-10-18T21:13:31.66 | 0.1 | positive | manual | P | 175 | 17.1717 | 118 | 0.06 | 100 |
IV.SEI.HHZ. | 2020-10-18T21:13:31.70 | 0.1 | positive | manual | P | 275 | 18.3705 | 116 | -0.1 | 99 |
IV.RONT.HHZ. | 2020-10-18T21:13:31.12 | 0.1 | positive | manual | P | 247 | 13.3755 | 124 | 0.17 | 98 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.VISG.HHN. | ML:2.1 | 0.0009665 | 0.1 | AML | other | m | 2020-10-18T21:13:35.65 |
IV.RINC.HHE. | ML:1.9 | 0.000759 | 0.22 | AML | other | m | 2020-10-18T21:13:35.73 |
IV.VISG.HHE. | ML:1.9 | 0.000615 | 0.12 | AML | other | m | 2020-10-18T21:13:35.71 |
IV.RINC.HHN. | ML:1.9 | 0.0006605000000000001 | 0.3 | AML | other | m | 2020-10-18T21:13:35.72 |
IV.SFI.EHE. | ML:1.7 | 0.0003135 | 0.14 | AML | other | m | 2020-10-18T21:13:37.53 |
IV.SFI.HNE. | ML:1.8 | 0.00032299999999999994 | 0.14 | AML | other | m | 2020-10-18T21:13:37.53 |
IV.SFI.EHN. | ML:1.7 | 0.000309 | 0.72 | AML | other | m | 2020-10-18T21:13:37.20 |
IV.SFI.HNN. | ML:1.7 | 0.00028100000000000005 | 1.32 | AML | other | m | 2020-10-18T21:13:37.20 |
IV.BRIS.HHE. | ML:1.9 | 0.000529 | 0.34 | AML | other | m | 2020-10-18T21:13:37.93 |
IV.BRIS.HHN. | ML:2.0 | 0.0006085 | 0.34 | AML | other | m | 2020-10-18T21:13:38.17 |
IV.ASQU.HHE. | ML:2.0 | 0.0004865 | 0.64 | AML | other | m | 2020-10-18T21:13:39.26 |
IV.ASQU.HHN. | ML:1.9 | 0.000404 | 0.72 | AML | other | m | 2020-10-18T21:13:39.45 |
IV.MOCL.EHE. | ML:2.0 | 0.0005434999999999999 | 1.5 | AML | other | m | 2020-10-18T21:13:39.95 |
IV.MOCL.EHN. | ML:2.3 | 0.0009025000000000001 | 1.02 | AML | other | m | 2020-10-18T21:13:40.05 |
IV.FNVD.HHE. | ML:1.7 | 0.000192 | 1.62 | AML | other | m | 2020-10-18T21:13:41.17 |
IV.MPPT.EHN. | ML:1.5 | 0.00009865 | 0.54 | AML | other | m | 2020-10-18T21:13:42.89 |
IV.MPPT.EHE. | ML:1.6 | 0.000121 | 1.22 | AML | other | m | 2020-10-18T21:13:43.91 |
IV.FNVD.HHN. | ML:1.6 | 0.000141 | 0.52 | AML | other | m | 2020-10-18T21:13:45.64 |
GU.POPM.HHE. | ML:1.7 | 0.0000922 | 0.2 | AML | other | m | 2020-10-18T21:13:49.78 |
GU.POPM.HHN. | ML:1.8 | 0.00010865 | 1.28 | AML | other | m | 2020-10-18T21:13:49.18 |
IV.CSNT.HHE. | ML:1.5 | 0.00005875 | 0.76 | AML | other | m | 2020-10-18T21:13:52.06 |
IV.CSNT.HHN. | ML:1.4 | 0.0000521 | 0.56 | AML | other | m | 2020-10-18T21:13:52.62 |
IV.PII.HHE. | ML:1.7 | 0.000052699999999999993 | 0.42 | AML | other | m | 2020-10-18T21:13:55.76 |
IV.PII.HHN. | ML:1.6 | 0.00005215 | 1.66 | AML | other | m | 2020-10-18T21:13:55.14 |