A magnitude ML 1.1 earthquake occured in region: 5 km W Palazzuolo sul Senio (FI), on
and geographic coordinates (lat, lon) 44.1170, 11.4860 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 |
---|---|---|---|---|
Palazzuolo sul Senio | FI | 5 | 1154 | 1154 |
Firenzuola | FI | 9 | 4726 | 5880 |
Castel del Rio | BO | 11 | 1246 | 7126 |
Marradi | FI | 11 | 3139 | 10265 |
Casola Valsenio | RA | 16 | 2617 | 12882 |
Fontanelice | BO | 17 | 1943 | 14825 |
Monghidoro | BO | 18 | 3749 | 18574 |
Borgo San Lorenzo | FI | 20 | 18211 | 36785 |
Borgo Tossignano | BO | 20 | 3288 | 40073 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.1 | 2021-04-22 03:57:14 |
44.1173 | 11.4858 | 10 | 2021-04-22 04:14:41 |
Sala Sismica INGV-Roma | 89347361 |
Field | Value |
---|---|
Time (UTC) | 2021-04-22 03:57:14 ± 0.24 |
Latitude | 44.1173 ± 0.0108 |
Longitude | 11.4858 ± 0.0138 |
Depth (km) | 10 ± 3 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 89347361 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1004 |
Semi-minor axis of confidence ellipse (meter) | 912 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 101 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1000.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 98 |
Number of associated phases, regardless of their use for origin computation | 11 |
Number of defining phases | 10 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.27 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.27969 |
Number of stations at which the event was observed | 7 |
Number of stations from which data was used for origin computation | 6 |
Field | Value |
---|---|
Value | 1.1 |
Uncertainty | 0.4 |
Num. used stations | 6 |
Type of magnitude | ML |
Reference to an origin | 89347361 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-04-22 04:14:41 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.APEC.HHZ. | 2021-04-22T03:57:33.81 | 3.0 | negative | manual | P | 0.48 | 0 | |||
IV.BRIS.HHZ. | 2021-04-22T03:57:23.74 | 0.6 | undecidable | manual | S | 62 | 25.2525 | 111 | 0.04 | 42 |
IV.RUFI.EHZ. | 2021-04-22T03:57:20.31 | 1.0 | negative | manual | P | 177 | 31.0467 | 50 | -0.42 | 24 |
IV.RONT.HHZ. | 2021-04-22T03:57:20.65 | 0.6 | undecidable | manual | S | 197 | 14.3745 | 123 | 0.35 | 49 |
IV.SEI.HHZ. | 2021-04-22T03:57:20.18 | 0.6 | undecidable | manual | S | 235 | 12.2766 | 128 | 0.46 | 49 |
IV.BRIS.HHZ. | 2021-04-22T03:57:19.48 | 0.6 | positive | manual | P | 62 | 25.2525 | 111 | -0.26 | 48 |
IV.VISG.HHZ. | 2021-04-22T03:57:18.73 | 0.6 | undecidable | manual | S | 333 | 8.9799 | 137 | -0.12 | 44 |
IV.RONT.HHZ. | 2021-04-22T03:57:17.99 | 0.1 | positive | manual | P | 197 | 14.3745 | 123 | 0.21 | 100 |
IV.SEI.HHZ. | 2021-04-22T03:57:17.63 | 0.1 | positive | manual | P | 235 | 12.2766 | 128 | 0.19 | 99 |
IV.LMD.HHZ. | 2021-04-22T03:57:17.89 | 0.6 | undecidable | manual | P | 104 | 18.1707 | 118 | -0.55 | 46 |
IV.VISG.HHZ. | 2021-04-22T03:57:16.93 | 0.6 | undecidable | manual | P | 333 | 8.9799 | 137 | -0.01 | 49 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.SEI.HHE. | ML:1.1 | 0.000131 | 0.14 | AML | other | m | 2021-04-22T03:57:20.46 |
IV.SEI.HHN. | ML:1.6 | 0.000506 | 0.2 | AML | other | m | 2021-04-22T03:57:20.40 |
IV.RONT.HHE. | ML:1.3 | 0.0002135 | 0.26 | AML | other | m | 2021-04-22T03:57:21.72 |
IV.RONT.HHN. | ML:1.3 | 0.000213 | 0.38 | AML | other | m | 2021-04-22T03:57:22.20 |
IV.LMD.HHE. | ML:0.5 | 0.00002665 | 0.82 | AML | other | m | 2021-04-22T03:57:22.72 |
IV.LMD.HHN. | ML:0.6 | 0.00003025 | 0.82 | AML | other | m | 2021-04-22T03:57:23.10 |