A magnitude ML 1.1 earthquake occured in region: 2 km E Marradi (FI), on
and geographic coordinates (lat, lon) 44.0770, 11.6420 at 11 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 | 2 | 3139 | 3139 |
Tredozio | FC | 8 | 1212 | 4351 |
Palazzuolo sul Senio | FI | 9 | 1154 | 5505 |
Portico e San Benedetto | FC | 13 | 756 | 6261 |
Modigliana | FC | 15 | 4560 | 10821 |
Premilcuore | FC | 15 | 799 | 11620 |
Rocca San Casciano | FC | 16 | 1910 | 13530 |
Casola Valsenio | RA | 17 | 2617 | 16147 |
San Godenzo | FI | 17 | 1167 | 17314 |
Castel del Rio | BO | 19 | 1246 | 18560 |
Brisighella | RA | 19 | 7639 | 26199 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.1 | 2023-09-18 03:36:32 |
44.077 | 11.6422 | 11 | 2023-09-18 03:59:28 |
Sala Sismica INGV-Roma | 121153781 |
Field | Value |
---|---|
Time (UTC) | 2023-09-18 03:36:32 ± 0.12 |
Latitude | 44.0770 ± 0.0045 |
Longitude | 11.6422 ± 0.0075 |
Depth (km) | 11 ± 0 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 121153781 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 675 |
Semi-minor axis of confidence ellipse (meter) | 341 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 230 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 670.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 192 |
Number of associated phases, regardless of their use for origin computation | 10 |
Number of defining phases | 10 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.19 |
Epicentral distance of station closest to the epicenter (degree) | 0.14569 |
Epicentral distance of station farthest from the epicenter (degree) | 0.25721 |
Number of stations at which the event was observed | 5 |
Number of stations from which data was used for origin computation | 5 |
Field | Value |
---|---|
Value | 1.1 |
Uncertainty | 0.3 |
Num. used stations | 8 |
Type of magnitude | ML |
Reference to an origin | 121153781 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2023-09-18 03:59:28 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.RUFI.EHZ. | 2023-09-18T03:36:42.68 | 0.1 | undecidable | manual | S | 202 | 28.5492 | 50 | 0.08 | 97 |
IV.SEI.HHZ. | 2023-09-18T03:36:41.13 | 0.1 | undecidable | manual | S | 264 | 22.755 | 50 | 0.08 | 97 |
IV.SFI.EHZ. | 2023-09-18T03:36:41.85 | 0.1 | undecidable | manual | S | 139 | 25.1526 | 50 | 0.16 | 96 |
IV.VISG.HHZ. | 2023-09-18T03:36:40.72 | 0.1 | undecidable | manual | S | 307 | 20.6682 | 50 | 0.22 | 95 |
IV.VMGN.HHZ. | 2023-09-18T03:36:39.15 | 0.1 | undecidable | manual | S | 213 | 16.1727 | 123 | 0.01 | 100 |
IV.SFI.EHZ. | 2023-09-18T03:36:37.70 | 0.3 | positive | manual | P | 139 | 25.1526 | 50 | -0.07 | 73 |
IV.RUFI.EHZ. | 2023-09-18T03:36:37.93 | 1.0 | negative | manual | P | 202 | 28.5492 | 50 | -0.37 | 23 |
IV.SEI.HHZ. | 2023-09-18T03:36:37.14 | 0.1 | negative | manual | P | 264 | 22.755 | 50 | -0.26 | 94 |
IV.VMGN.HHZ. | 2023-09-18T03:36:36.24 | 0.3 | positive | manual | P | 213 | 16.1727 | 123 | -0.06 | 74 |
IV.VISG.HHZ. | 2023-09-18T03:36:36.86 | 0.6 | undecidable | manual | P | 307 | 20.6682 | 50 | -0.22 | 47 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.VMGN.HHE. | ML:0.9 | 0.0000678 | 0.46 | AML | other | m | 2023-09-18T03:36:39.49 |
IV.VISG.HHE. | ML:0.8 | 0.0000506 | 0.54 | AML | other | m | 2023-09-18T03:36:40.54 |
IV.VISG.HHN. | ML:0.9 | 0.000054 | 1.6 | AML | other | m | 2023-09-18T03:36:40.13 |
IV.SEI.HHE. | ML:1.4 | 0.00016649999999999998 | 0.4 | AML | other | m | 2023-09-18T03:36:41.20 |
IV.SEI.HHN. | ML:1.8 | 0.0004465 | 0.2 | AML | other | m | 2023-09-18T03:36:41.36 |
IV.VMGN.HHN. | ML:0.9 | 0.00006315 | 0.3 | AML | other | m | 2023-09-18T03:36:41.38 |
IV.SFI.EHN. | ML:1.1 | 0.00007714999999999999 | 0.18 | AML | other | m | 2023-09-18T03:36:42.48 |
IV.SFI.EHE. | ML:1.2 | 0.0001012 | 0.58 | AML | other | m | 2023-09-18T03:36:42.60 |