A magnitude ML 1.1 earthquake occured in region: 1 km NW Marradi (FI), on
and geographic coordinates (lat, lon) 44.0830, 11.6020 at 7 km depth.
The earthquake was located by: Sala Sismica INGV-Roma.
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 | 1 | 3139 | 3139 |
Palazzuolo sul Senio | FI | 5 | 1154 | 4293 |
Tredozio | FC | 11 | 1212 | 5505 |
Portico e San Benedetto | FC | 16 | 756 | 6261 |
Casola Valsenio | RA | 16 | 2617 | 8878 |
Castel del Rio | BO | 17 | 1246 | 10124 |
San Godenzo | FI | 17 | 1167 | 11291 |
Modigliana | FC | 17 | 4560 | 15851 |
Firenzuola | FI | 18 | 4726 | 20577 |
Premilcuore | FC | 18 | 799 | 21376 |
Rocca San Casciano | FC | 19 | 1910 | 23286 |
Vicchio | FI | 20 | 8044 | 31330 |
Fontanelice | BO | 20 | 1943 | 33273 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.1 | 2021-10-18 13:41:55 |
44.083 | 11.6015 | 7 | 2021-10-18 13:53:00 |
Sala Sismica INGV-Roma | 96728491 |
Field | Value |
---|---|
Time (UTC) | 2021-10-18 13:41:55 ± 0.15 |
Latitude | 44.0830 ± 0.0072 |
Longitude | 11.6015 ± 0.0075 |
Depth (km) | 7 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 96728491 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 702 |
Semi-minor axis of confidence ellipse (meter) | 406 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 206 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 700.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 89 |
Number of associated phases, regardless of their use for origin computation | 19 |
Number of defining phases | 16 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.3 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.52790 |
Number of stations at which the event was observed | 12 |
Number of stations from which data was used for origin computation | 9 |
Field | Value |
---|---|
Value | 1.1 |
Uncertainty | 0.2 |
Num. used stations | 12 |
Type of magnitude | ML |
Reference to an origin | 96728491 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-10-18 13:53:00 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.FDMO.HHZ. | 2021-10-18T13:42:44.13 | 3.0 | undecidable | manual | S | -0.15 | 0 | |||
IV.CRE.HHZ. | 2021-10-18T13:42:14.83 | 0.6 | undecidable | manual | S | 151 | 58.5969 | 50 | 0.67 | 40 |
IV.APEC.HHZ. | 2021-10-18T13:42:12.02 | 3.0 | positive | manual | P | 0.46 | 0 | |||
IV.MOCL.EHZ. | 2021-10-18T13:42:07.84 | 0.6 | undecidable | manual | S | 256 | 34.6431 | 102 | 0.38 | 46 |
IV.ASQU.HHZ. | 2021-10-18T13:42:07.87 | 0.6 | undecidable | manual | S | 155 | 35.1426 | 102 | 0.24 | 48 |
IV.CSNT.HHZ. | 2021-10-18T13:42:05.99 | 3.0 | positive | manual | P | -2.77 | 0 | |||
IV.RUFI.EHZ. | 2021-10-18T13:42:05.54 | 0.6 | undecidable | manual | S | 195 | 28.1496 | 104 | 0.27 | 48 |
IV.CRE.HHZ. | 2021-10-18T13:42:05.74 | 1.0 | negative | manual | P | 151 | 58.5969 | 50 | -0.4 | 22 |
IV.VISG.HHZ. | 2021-10-18T13:42:02.09 | 0.6 | undecidable | manual | S | 311 | 17.7711 | 112 | 0.26 | 49 |
IV.ASQU.HHZ. | 2021-10-18T13:42:02.01 | 0.1 | positive | manual | P | 155 | 35.1426 | 102 | -0.36 | 93 |
IV.SEI.HHZ. | 2021-10-18T13:42:02.84 | 0.6 | undecidable | manual | S | 261 | 19.6692 | 110 | 0.4 | 47 |
IV.MOCL.EHZ. | 2021-10-18T13:42:01.91 | 0.3 | positive | manual | P | 256 | 34.6431 | 102 | -0.37 | 70 |
IV.SFI.HNZ. | 2021-10-18T13:42:00.77 | 0.1 | undecidable | manual | P | 135 | 27.8499 | 104 | -0.18 | 98 |
IV.RUFI.EHZ. | 2021-10-18T13:42:00.89 | 0.6 | positive | manual | P | 195 | 28.1496 | 104 | -0.12 | 49 |
IV.SEI.HHZ. | 2021-10-18T13:41:59.24 | 0.1 | positive | manual | P | 261 | 19.6692 | 110 | -0.14 | 100 |
IV.LMD.HHZ. | 2021-10-18T13:41:59.59 | 0.6 | undecidable | manual | S | 94 | 8.4804 | 130 | 0.56 | 46 |
IV.BRIS.HHZ. | 2021-10-18T13:41:59.97 | 0.3 | positive | manual | P | 40 | 20.4684 | 109 | 0.44 | 70 |
IV.VISG.HHZ. | 2021-10-18T13:41:58.72 | 0.3 | positive | manual | P | 311 | 17.7711 | 112 | -0.3 | 73 |
IV.LMD.HHZ. | 2021-10-18T13:41:57.10 | 0.1 | positive | manual | P | 94 | 8.4804 | 130 | -0.3 | 98 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.VISG.HHN. | ML:1.0 | 0.00009534999999999999 | 0.98 | AML | other | m | 2021-10-18T13:42:02.69 |
IV.ASQU.HHN. | ML:0.9 | 0.00003176547 | 0.2368 | AML | other | m | 2021-10-18T13:42:08.52 |
IV.VISG.HHE. | ML:0.9 | 0.0000687 | 0.2 | AML | other | m | 2021-10-18T13:42:03.16 |
IV.SEI.HHN. | ML:1.6 | 0.00035049999999999995 | 0.5 | AML | other | m | 2021-10-18T13:42:03.42 |
IV.SEI.HHE. | ML:1.4 | 0.000224 | 1.4 | AML | other | m | 2021-10-18T13:42:03.06 |
IV.BRIS.HHE. | ML:0.0 | 0.00010405000000000001 | 0.38 | AML | other | m | 2021-10-18T13:42:06.19 |
IV.MOCL.EHN. | ML:1.2 | 0.000059999999999999995 | 1.06 | AML | other | m | 2021-10-18T13:42:07.93 |
IV.ASQU.HHE. | ML:1.0 | 0.000042749999999999996 | 1.34 | AML | other | m | 2021-10-18T13:42:08.14 |
IV.MOCL.EHE. | ML:1.1 | 0.00004895 | 0.22 | AML | other | m | 2021-10-18T13:42:08.40 |
IV.BRIS.HHN. | ML:0.0 | 0.0001325 | 0.36 | AML | other | m | 2021-10-18T13:42:10.70 |
IV.CRE.HHE. | ML:0.7 | 0.000011477350000000001 | 0.3008 | AML | other | m | 2021-10-18T13:42:15.11 |
IV.CRE.HHN. | ML:0.8 | 0.000016933115 | 0.1984 | AML | other | m | 2021-10-18T13:42:15.34 |