A magnitude ML 0.9 earthquake occured in region: 1 km SE Marradi (FI), on
and geographic coordinates (lat, lon) 44.0680, 11.6220 at 6 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 | 8 | 1154 | 4293 |
Tredozio | FC | 10 | 1212 | 5505 |
Portico e San Benedetto | FC | 14 | 756 | 6261 |
San Godenzo | FI | 16 | 1167 | 7428 |
Premilcuore | FC | 16 | 799 | 8227 |
Modigliana | FC | 17 | 4560 | 12787 |
Casola Valsenio | RA | 17 | 2617 | 15404 |
Rocca San Casciano | FC | 18 | 1910 | 17314 |
Castel del Rio | BO | 19 | 1246 | 18560 |
Vicchio | FI | 19 | 8044 | 26604 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 0.9 | 2023-10-28 03:44:30 |
44.0682 | 11.6223 | 6 | 2023-10-28 03:53:21 |
Sala Sismica INGV-Roma | 122490631 |
Field | Value |
---|---|
Time (UTC) | 2023-10-28 03:44:30 ± 0.14 |
Latitude | 44.0682 ± 0.0045 |
Longitude | 11.6223 ± 0.0063 |
Depth (km) | 6 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 122490631 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 494 |
Semi-minor axis of confidence ellipse (meter) | 260 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 177 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 490.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 129 |
Number of associated phases, regardless of their use for origin computation | 12 |
Number of defining phases | 12 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.21 |
Epicentral distance of station closest to the epicenter (degree) | 0.01439 |
Epicentral distance of station farthest from the epicenter (degree) | 0.24372 |
Number of stations at which the event was observed | 7 |
Number of stations from which data was used for origin computation | 7 |
Field | Value |
---|---|
Value | 0.9 |
Uncertainty | 0.1 |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 122490631 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2023-10-28 03:53:21 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.SEI.HHZ. | 2023-10-28T03:44:38.51 | 0.3 | undecidable | manual | S | 266 | 21.0678 | 106 | 0.08 | 72 |
IV.VISG.HHZ. | 2023-10-28T03:44:38.31 | 0.3 | undecidable | manual | S | 312 | 20.0688 | 107 | 0.21 | 70 |
IV.VMGN.HHZ. | 2023-10-28T03:44:36.64 | 0.3 | undecidable | manual | S | 210 | 14.4744 | 112 | 0.38 | 69 |
IV.RUFI.EHZ. | 2023-10-28T03:44:36.01 | 0.1 | undecidable | manual | P | 199 | 27.0507 | 102 | -0.37 | 90 |
IV.VISG.HHZ. | 2023-10-28T03:44:35.01 | 0.1 | undecidable | manual | P | 312 | 20.0688 | 107 | -0.01 | 98 |
IV.RINC.EHZ. | 2023-10-28T03:44:35.13 | 0.1 | undecidable | manual | P | 184 | 20.1687 | 107 | 0.09 | 96 |
IV.VMGN.HHZ. | 2023-10-28T03:44:34.09 | 0.3 | positive | manual | P | 210 | 14.4744 | 112 | 0.13 | 72 |
IV.LMD.HHZ. | 2023-10-28T03:44:34.06 | 0.1 | undecidable | manual | S | 81 | 6.8931 | 131 | 0.09 | 99 |
IV.SEI.HHZ. | 2023-10-28T03:44:34.99 | 0.1 | undecidable | manual | P | 266 | 21.0678 | 106 | -0.22 | 94 |
IT.MRR.HGZ. | 2023-10-28T03:44:32.81 | 0.1 | undecidable | manual | S | 253 | 1.5984 | 165 | -0.16 | 98 |
IT.MRR.HGZ. | 2023-10-28T03:44:32.00 | 0.1 | undecidable | manual | P | 253 | 1.5984 | 165 | -0.06 | 100 |
IV.LMD.HHZ. | 2023-10-28T03:44:32.68 | 0.1 | undecidable | manual | P | 81 | 6.8931 | 131 | 0.04 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.VMGN.HHE. | ML:0.9 | 0.0000931 | 1.56 | AML | other | m | 2023-10-28T03:44:37.01 |
IV.VMGN.HHN. | ML:0.9 | 0.00009735 | 0.42 | AML | other | m | 2023-10-28T03:44:37.59 |
IV.VISG.HHN. | ML:0.9 | 0.0000583 | 0.9 | AML | other | m | 2023-10-28T03:44:38.57 |
IV.VISG.HHE. | ML:0.7 | 0.00003985 | 1.58 | AML | other | m | 2023-10-28T03:44:40.83 |