A magnitude ML 1.1 earthquake occured in region: 5 km E Marradi (FI), on
and geographic coordinates (lat, lon) 44.0930, 11.6730 at 10 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 | 5 | 3139 | 3139 |
Tredozio | FC | 6 | 1212 | 4351 |
Palazzuolo sul Senio | FI | 10 | 1154 | 5505 |
Portico e San Benedetto | FC | 11 | 756 | 6261 |
Modigliana | FC | 12 | 4560 | 10821 |
Rocca San Casciano | FC | 14 | 1910 | 12731 |
Casola Valsenio | RA | 15 | 2617 | 15348 |
Premilcuore | FC | 15 | 799 | 16147 |
Brisighella | RA | 16 | 7639 | 23786 |
Dovadola | FC | 18 | 1653 | 25439 |
San Godenzo | FI | 19 | 1167 | 26606 |
Castel del Rio | BO | 19 | 1246 | 27852 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.1 | 2023-09-18 17:09:11 |
44.0927 | 11.6732 | 10 | 2023-09-18 17:25:11 |
Sala Sismica INGV-Roma | 121200001 |
Field | Value |
---|---|
Time (UTC) | 2023-09-18 17:09:11 ± 0.22 |
Latitude | 44.0927 ± 0.0090 |
Longitude | 11.6732 ± 0.0125 |
Depth (km) | 10 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 121200001 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1176 |
Semi-minor axis of confidence ellipse (meter) | 257 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 44 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1180.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 183 |
Number of associated phases, regardless of their use for origin computation | 18 |
Number of defining phases | 16 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.34 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.28059 |
Number of stations at which the event was observed | 11 |
Number of stations from which data was used for origin computation | 9 |
Field | Value |
---|---|
Value | 1.1 |
Uncertainty | 0.1 |
Num. used stations | 2 |
Type of magnitude | ML |
Reference to an origin | 121200001 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2023-09-18 17:25:11 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.SFI.EHZ. | 2023-09-18T17:09:21.10 | 0.6 | undecidable | manual | S | 146 | 25.0527 | 50 | 0.53 | 42 |
IV.SEI.HHZ. | 2023-09-18T17:09:20.96 | 0.6 | undecidable | manual | S | 260 | 25.4523 | 50 | 0.28 | 46 |
IV.RINC.EHZ. | 2023-09-18T17:09:20.38 | 0.6 | undecidable | manual | S | 193 | 23.4543 | 114 | 0.22 | 44 |
IV.VMAN.HHE. | 2023-09-18T17:09:20.85 | 3.0 | positive | manual | P | 0.31 | 0 | |||
IV.VISG.HHZ. | 2023-09-18T17:09:19.89 | 0.3 | undecidable | manual | S | 299 | 21.867 | 115 | 0.26 | 70 |
IV.VMGN.HHZ. | 2023-09-18T17:09:18.79 | 0.3 | undecidable | manual | S | 216 | 18.9699 | 118 | 0.03 | 70 |
IV.SFI.EHZ. | 2023-09-18T17:09:17.09 | 0.6 | positive | manual | P | 146 | 25.0527 | 50 | 0.45 | 44 |
IV.RUFI.EHZ. | 2023-09-18T17:09:17.61 | 0.1 | undecidable | manual | P | 205 | 31.1466 | 50 | 0.03 | 95 |
IV.VMGN.HHZ. | 2023-09-18T17:09:16.01 | 1.0 | negative | manual | P | 216 | 18.9699 | 118 | 0.42 | 22 |
IV.SEI.HHZ. | 2023-09-18T17:09:16.76 | 0.1 | undecidable | manual | P | 260 | 25.4523 | 50 | 0.06 | 97 |
IV.VISG.HHZ. | 2023-09-18T17:09:16.43 | 0.1 | undecidable | manual | P | 299 | 21.867 | 115 | 0.34 | 92 |
IV.BOSL.HHZ. | 2023-09-18T17:09:16.55 | 0.1 | undecidable | manual | P | 233 | 29.8479 | 50 | -0.83 | 73 |
IV.RINC.EHZ. | 2023-09-18T17:09:16.79 | 1.0 | positive | manual | P | 193 | 23.4543 | 114 | 0.39 | 22 |
IV.LMD.HHZ. | 2023-09-18T17:09:14.35 | 0.6 | undecidable | manual | S | 122 | 3.1968 | 163 | -0.65 | 46 |
IV.SBPO.HNZ. | 2023-09-18T17:09:14.51 | 3.0 | negative | manual | P | -0.12 | 0 | |||
IT.MRR.HGE. | 2023-09-18T17:09:14.80 | 0.6 | undecidable | manual | S | 240 | 6.3936 | 148 | -0.67 | 46 |
IT.MRR.HGE. | 2023-09-18T17:09:13.62 | 0.1 | undecidable | manual | P | 240 | 6.3936 | 148 | -0.07 | 100 |
IV.LMD.HHZ. | 2023-09-18T17:09:13.36 | 0.6 | undecidable | manual | P | 122 | 3.1968 | 163 | -0.06 | 50 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.LMD.HHN. | ML:1.2 | 0.00026900000000000003 | 0.18 | AML | other | m | 2023-09-18T17:09:14.41 |
IV.LMD.HHE. | ML:1.0 | 0.00017549999999999998 | 0.08 | AML | other | m | 2023-09-18T17:09:14.55 |