A magnitude ML 1.2 earthquake occured in region: 3 km E Marradi (FI), on
and geographic coordinates (lat, lon) 44.0810, 11.6460 at 8 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 | 3 | 3139 | 3139 |
Tredozio | FC | 8 | 1212 | 4351 |
Palazzuolo sul Senio | FI | 9 | 1154 | 5505 |
Portico e San Benedetto | FC | 12 | 756 | 6261 |
Modigliana | FC | 15 | 4560 | 10821 |
Premilcuore | FC | 16 | 799 | 11620 |
Rocca San Casciano | FC | 16 | 1910 | 13530 |
Casola Valsenio | RA | 16 | 2617 | 16147 |
San Godenzo | FI | 17 | 1167 | 17314 |
Brisighella | RA | 19 | 7639 | 24953 |
Castel del Rio | BO | 19 | 1246 | 26199 |
Dovadola | FC | 20 | 1653 | 27852 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.2 | 2023-09-20 01:21:57 |
44.0812 | 11.6462 | 8 | 2023-09-20 04:47:46 |
Sala Sismica INGV-Roma | 121259991 |
Field | Value |
---|---|
Time (UTC) | 2023-09-20 01:21:57 ± 0.07 |
Latitude | 44.0812 ± 0.0027 |
Longitude | 11.6462 ± 0.0038 |
Depth (km) | 8 ± 0 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 121259991 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 274 |
Semi-minor axis of confidence ellipse (meter) | 235 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 194 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 270.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 150 |
Number of associated phases, regardless of their use for origin computation | 17 |
Number of defining phases | 17 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.11 |
Epicentral distance of station closest to the epicenter (degree) | 0.04407 |
Epicentral distance of station farthest from the epicenter (degree) | 0.51171 |
Number of stations at which the event was observed | 9 |
Number of stations from which data was used for origin computation | 9 |
Field | Value |
---|---|
Value | 1.2 |
Uncertainty | 0.3 |
Num. used stations | 10 |
Type of magnitude | ML |
Reference to an origin | 121259991 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2023-09-20 04:47:46 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.MOCL.EHZ. | 2023-09-20T01:22:10.20 | 0.6 | undecidable | manual | S | 257 | 38.0286 | 50 | -0.12 | 64 |
IV.RUFI.EHZ. | 2023-09-20T01:22:07.34 | 0.6 | undecidable | manual | S | 202 | 29.1486 | 106 | -0.23 | 63 |
IV.CRE.HHZ. | 2023-09-20T01:22:07.82 | 0.6 | positive | manual | P | 154 | 56.7987 | 50 | 0.21 | 61 |
IV.SFI.EHZ. | 2023-09-20T01:22:06.37 | 0.6 | undecidable | manual | S | 141 | 25.2525 | 108 | 0.06 | 66 |
IV.SEI.HHZ. | 2023-09-20T01:22:05.52 | 0.6 | undecidable | manual | S | 263 | 23.1546 | 110 | -0.07 | 66 |
IV.VISG.HHZ. | 2023-09-20T01:22:05.01 | 0.6 | undecidable | manual | S | 305 | 20.6682 | 112 | 0.21 | 65 |
IV.RINC.EHZ. | 2023-09-20T01:22:05.28 | 0.6 | undecidable | manual | S | 188 | 21.867 | 111 | 0.11 | 66 |
IV.MOCL.EHZ. | 2023-09-20T01:22:04.48 | 1.0 | negative | manual | P | 257 | 38.0286 | 50 | -0.24 | 31 |
IV.VMGN.HHZ. | 2023-09-20T01:22:03.68 | 0.6 | undecidable | manual | S | 213 | 16.6722 | 116 | 0.14 | 66 |
IV.SFI.EHZ. | 2023-09-20T01:22:02.39 | 0.3 | negative | manual | P | 141 | 25.2525 | 108 | -0.01 | 100 |
IV.RUFI.EHZ. | 2023-09-20T01:22:02.87 | 1.0 | undecidable | manual | P | 202 | 29.1486 | 106 | -0.26 | 31 |
IV.SEI.HHZ. | 2023-09-20T01:22:01.80 | 1.0 | undecidable | manual | P | 263 | 23.1546 | 110 | -0.19 | 32 |
IV.VISG.HHZ. | 2023-09-20T01:22:01.59 | 1.0 | undecidable | manual | P | 305 | 20.6682 | 112 | 0.06 | 33 |
IV.RINC.EHZ. | 2023-09-20T01:22:01.83 | 1.0 | positive | manual | P | 188 | 21.867 | 111 | 0.08 | 33 |
IV.VMGN.HHZ. | 2023-09-20T01:22:00.96 | 0.3 | positive | manual | P | 213 | 16.6722 | 116 | 0.15 | 99 |
IV.LMD.HHZ. | 2023-09-20T01:22:00.20 | 0.6 | undecidable | manual | S | 95 | 4.8951 | 149 | -0.2 | 66 |
IV.LMD.HHZ. | 2023-09-20T01:21:58.96 | 0.6 | undecidable | manual | P | 95 | 4.8951 | 149 | -0.03 | 69 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.VMGN.HHE. | ML:1.0 | 0.0000946 | 1.54 | AML | other | m | 2023-09-20T01:22:04.98 |
IV.VISG.HHE. | ML:0.9 | 0.00006434999999999999 | 0.54 | AML | other | m | 2023-09-20T01:22:05.27 |
IV.VISG.HHN. | ML:1.0 | 0.0000735 | 0.1 | AML | other | m | 2023-09-20T01:22:05.85 |
IV.SEI.HHE. | ML:1.5 | 0.0002325 | 1.6 | AML | other | m | 2023-09-20T01:22:05.93 |
IV.SEI.HHN. | ML:2.0 | 0.000641 | 1.8 | AML | other | m | 2023-09-20T01:22:05.08 |
IV.VMGN.HHN. | ML:1.0 | 0.00008599999999999999 | 0.28 | AML | other | m | 2023-09-20T01:22:06.11 |
IV.SFI.EHN. | ML:1.2 | 0.00009595 | 0.2 | AML | other | m | 2023-09-20T01:22:07.20 |
IV.SFI.EHE. | ML:1.3 | 0.000111 | 0.6 | AML | other | m | 2023-09-20T01:22:07.61 |
IV.MOCL.EHE. | ML:1.4 | 0.00009255 | 1 | AML | other | m | 2023-09-20T01:22:10.18 |
IV.MOCL.EHN. | ML:1.4 | 0.00009329999999999999 | 0.88 | AML | other | m | 2023-09-20T01:22:10.96 |