A magnitude ML 1.5 earthquake occured in region: 3 km SE Marradi (FI), on
and geographic coordinates (lat, lon) 44.0640, 11.6400 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 | 3 | 3139 | 3139 |
Tredozio | FC | 9 | 1212 | 4351 |
Palazzuolo sul Senio | FI | 9 | 1154 | 5505 |
Portico e San Benedetto | FC | 12 | 756 | 6261 |
Premilcuore | FC | 15 | 799 | 7060 |
San Godenzo | FI | 15 | 1167 | 8227 |
Modigliana | FC | 16 | 4560 | 12787 |
Rocca San Casciano | FC | 16 | 1910 | 14697 |
Casola Valsenio | RA | 18 | 2617 | 17314 |
Castel del Rio | BO | 20 | 1246 | 18560 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.5 | 2023-09-18 03:38:47 |
44.0645 | 11.6403 | 10 | 2023-09-18 04:01:14 |
Sala Sismica INGV-Roma | 121154021 |
Field | Value |
---|---|
Time (UTC) | 2023-09-18 03:38:47 ± 0.21 |
Latitude | 44.0645 ± 0.0081 |
Longitude | 11.6403 ± 0.0113 |
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 | 121154021 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1181 |
Semi-minor axis of confidence ellipse (meter) | 99 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 45 |
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) | 187 |
Number of associated phases, regardless of their use for origin computation | 14 |
Number of defining phases | 14 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.35 |
Epicentral distance of station closest to the epicenter (degree) | 0.13400 |
Epicentral distance of station farthest from the epicenter (degree) | 0.49912 |
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 | 1.5 |
Uncertainty | 0.2 |
Num. used stations | 10 |
Type of magnitude | ML |
Reference to an origin | 121154021 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2023-09-18 04:01:14 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.CRE.HHZ. | 2023-09-18T03:39:06.30 | 0.1 | undecidable | manual | S | 153 | 55.4001 | 50 | 0.82 | 74 |
IV.MOCL.EHZ. | 2023-09-18T03:39:00.63 | 0.1 | undecidable | manual | S | 260 | 37.2294 | 50 | -0.01 | 96 |
IV.CRE.HHZ. | 2023-09-18T03:38:57.17 | 1.0 | negative | manual | P | 153 | 55.4001 | 50 | -0.91 | 18 |
IV.RUFI.EHZ. | 2023-09-18T03:38:57.46 | 0.1 | undecidable | manual | S | 203 | 27.2505 | 50 | -0.51 | 88 |
IV.VISG.HHZ. | 2023-09-18T03:38:56.26 | 0.1 | undecidable | manual | S | 310 | 21.4674 | 115 | 0.11 | 97 |
IV.SFI.EHZ. | 2023-09-18T03:38:56.79 | 0.1 | undecidable | manual | S | 137 | 24.1536 | 112 | -0.24 | 94 |
IV.RINC.EHZ. | 2023-09-18T03:38:55.93 | 0.1 | undecidable | manual | S | 188 | 19.9689 | 116 | 0.25 | 94 |
IV.MOCL.EHZ. | 2023-09-18T03:38:55.95 | 1.0 | negative | manual | P | 260 | 37.2294 | 50 | 0.67 | 20 |
IV.VMGN.HHZ. | 2023-09-18T03:38:54.17 | 0.1 | undecidable | manual | S | 215 | 14.874 | 123 | 0 | 100 |
IV.RUFI.EHZ. | 2023-09-18T03:38:53.18 | 1.0 | undecidable | manual | P | 203 | 27.2505 | 50 | -0.56 | 22 |
IV.RINC.EHZ. | 2023-09-18T03:38:52.63 | 0.3 | negative | manual | P | 188 | 19.9689 | 116 | 0.21 | 71 |
IV.SFI.EHZ. | 2023-09-18T03:38:52.84 | 0.6 | positive | manual | P | 137 | 24.1536 | 112 | -0.36 | 46 |
IV.VISG.HHZ. | 2023-09-18T03:38:52.49 | 1.0 | undecidable | manual | P | 310 | 21.4674 | 115 | -0.2 | 24 |
IV.VMGN.HHZ. | 2023-09-18T03:38:51.48 | 0.1 | positive | manual | P | 215 | 14.874 | 123 | -0.06 | 99 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.VMGN.HHN. | ML:1.6 | 0.000431 | 0.24 | AML | other | m | 2023-09-18T03:38:54.41 |
IV.VMGN.HHE. | ML:1.7 | 0.0004395 | 0.38 | AML | other | m | 2023-09-18T03:38:54.47 |
IV.RINC.EHN. | ML:1.7 | 0.000373 | 0.8 | AML | other | m | 2023-09-18T03:38:56.43 |
IV.RINC.EHE. | ML:1.6 | 0.0003115 | 0.6 | AML | other | m | 2023-09-18T03:38:56.33 |
IV.VISG.HHN. | ML:1.3 | 0.00014150000000000002 | 0.5 | AML | other | m | 2023-09-18T03:38:57.14 |
IV.SFI.EHE. | ML:1.3 | 0.000136 | 0.24 | AML | other | m | 2023-09-18T03:38:57.61 |
IV.SFI.EHN. | ML:1.3 | 0.00011199999999999998 | 0.8 | AML | other | m | 2023-09-18T03:38:57.50 |
IV.VISG.HHE. | ML:1.2 | 0.0000983 | 0.7 | AML | other | m | 2023-09-18T03:38:57.50 |
IV.RUFI.EHN. | ML:1.7 | 0.00025550000000000003 | 0.44 | AML | other | m | 2023-09-18T03:38:57.90 |
IV.RUFI.EHE. | ML:1.2 | 0.00007905000000000001 | 1.78 | AML | other | m | 2023-09-18T03:38:57.97 |