A magnitude ML 0.8 earthquake occured in region: 3 km N Roccalbegna (GR), on
and geographic coordinates (lat, lon) 42.8070, 11.5050 at 2 km depth.
The earthquake was located by: Bollettino Sismico Italiano INGV.
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 |
---|---|---|---|---|
Roccalbegna | GR | 3 | 1044 | 1044 |
Santa Fiora | GR | 7 | 2622 | 3666 |
Arcidosso | GR | 8 | 4285 | 7951 |
Semproniano | GR | 9 | 1059 | 9010 |
Castel del Piano | GR | 10 | 4690 | 13700 |
Cinigiano | GR | 13 | 2618 | 16318 |
Seggiano | GR | 14 | 961 | 17279 |
Piancastagnaio | SI | 16 | 4230 | 21509 |
Castell'Azzara | GR | 16 | 1476 | 22985 |
Abbadia San Salvatore | SI | 16 | 6444 | 29429 |
Scansano | GR | 19 | 4427 | 33856 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
ML 0.8 | 2018-04-22 08:09:31 |
42.8073 | 11.5048 | 2 | 2019-04-24 14:49:47 |
Bollettino Sismico Italiano INGV | 65734171 |
Reviewed Rev100 |
ML 0.8 | 2018-04-22 08:09:31 |
42.8092 | 11.5082 | 2 | 2018-04-22 08:41:24 |
Sala Sismica INGV-Roma | 55952741 |
Field | Value |
---|---|
Time (UTC) | 2018-04-22 08:09:31 ± 0.16 |
Latitude | 42.8073 ± 0.0063 |
Longitude | 11.5048 ± 0.0074 |
Depth (km) | 2 ± 2 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | earthquake |
Origin ID | 65734171 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 743 |
Semi-minor axis of confidence ellipse (meter) | 358 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 220 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 740.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 203 |
Number of associated phases, regardless of their use for origin computation | 20 |
Number of defining phases | 20 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.24 |
Epicentral distance of station closest to the epicenter (degree) | 0.04317 |
Epicentral distance of station farthest from the epicenter (degree) | 0.29947 |
Number of stations at which the event was observed | 10 |
Number of stations from which data was used for origin computation | 10 |
Field | Value |
---|---|
Value | 0.8 |
Uncertainty | 0.3 |
Num. used stations | 6 |
Type of magnitude | ML |
Reference to an origin | 55952741 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2018-04-22 08:41:24 |
Field | Value |
---|---|
Value | 0.8 |
Uncertainty | 0.3 |
Num. used stations | 6 |
Type of magnitude | ML |
Reference to an origin | 65734171 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2019-02-20 14:21:46 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.SACS.HHZ. | 2018-04-22T08:09:43.03 | 0.3 | undecidable | manual | S | 82 | 33.2445 | 94 | 0.22 | 69 |
IV.LATE.HHZ. | 2018-04-22T08:09:42.56 | 0.3 | undecidable | manual | S | 131 | 32.5452 | 94 | 0.01 | 72 |
IV.LATE.HHZ. | 2018-04-22T08:09:38.10 | 0.3 | undecidable | manual | P | 131 | 32.5452 | 94 | 0.32 | 67 |
IV.SACS.HHZ. | 2018-04-22T08:09:38.71 | 0.1 | undecidable | manual | P | 82 | 33.2445 | 94 | 0.78 | 77 |
IV.MCIV.HHN. | 2018-04-22T08:09:36.03 | 0.6 | undecidable | manual | S | 103 | 14.3745 | 98 | -0.25 | 47 |
TV.SF11.HHE. | 2018-04-22T08:09:36.35 | 0.6 | undecidable | manual | S | 64 | 15.6732 | 97 | -0.4 | 45 |
TV.SF03.EHN. | 2018-04-22T08:09:36.17 | 0.6 | undecidable | manual | S | 92 | 14.6742 | 98 | -0.24 | 47 |
TV.SF04.EHZ. | 2018-04-22T08:09:35.67 | 0.6 | undecidable | manual | S | 76 | 13.0758 | 99 | -0.16 | 48 |
TV.SF14.HHE. | 2018-04-22T08:09:34.77 | 0.6 | undecidable | manual | S | 123 | 10.6782 | 101 | -0.25 | 47 |
TV.SF03.EHN. | 2018-04-22T08:09:34.12 | 0.1 | undecidable | manual | P | 92 | 14.6742 | 98 | -0.11 | 96 |
TV.SF13.HHE. | 2018-04-22T08:09:34.65 | 0.3 | undecidable | manual | S | 83 | 9.3795 | 102 | 0.06 | 74 |
IV.MCIV.HHN. | 2018-04-22T08:09:34.17 | 0.1 | undecidable | manual | P | 103 | 14.3745 | 98 | 0.02 | 98 |
TV.SF11.HHE. | 2018-04-22T08:09:34.20 | 0.1 | undecidable | manual | P | 64 | 15.6732 | 97 | -0.23 | 94 |
TV.SF04.EHZ. | 2018-04-22T08:09:33.80 | 0.1 | undecidable | manual | P | 76 | 13.0758 | 99 | -0.1 | 97 |
TV.SF14.HHE. | 2018-04-22T08:09:33.14 | 0.1 | undecidable | manual | P | 123 | 10.6782 | 101 | -0.29 | 94 |
IV.ARCI.HHZ. | 2018-04-22T08:09:33.28 | 0.1 | undecidable | manual | S | 334 | 5.4945 | 111 | -0.01 | 100 |
TV.SF13.HHE. | 2018-04-22T08:09:33.15 | 0.1 | undecidable | manual | P | 83 | 9.3795 | 102 | -0.03 | 99 |
TV.SF01.EHZ. | 2018-04-22T08:09:33.31 | 0.1 | undecidable | manual | S | 84 | 4.7952 | 113 | 0.25 | 95 |
IV.ARCI.HHZ. | 2018-04-22T08:09:32.38 | 0.1 | positive | manual | P | 334 | 5.4945 | 111 | -0.05 | 99 |
TV.SF01.EHZ. | 2018-04-22T08:09:32.40 | 0.1 | undecidable | manual | P | 84 | 4.7952 | 113 | 0.11 | 98 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.SACS.HNN. | ML:0.8 | 0.000030111589499999996 | 0.384 | AML | other | m | 2018-04-22T08:09:44.31 |
IV.SACS.HHN. | ML:0.5 | 0.00001520104 | 0.32 | AML | other | m | 2018-04-22T08:09:44.01 |
IV.SACS.HNE. | ML:0.6 | 0.000021453325000000002 | 0.3392 | AML | other | m | 2018-04-22T08:09:44.77 |
IV.SACS.HHE. | ML:0.5 | 0.00001613873 | 0.32 | AML | other | m | 2018-04-22T08:09:44.76 |
IV.LATE.HHE. | ML:1.1 | 0.000059555675 | 0.2816 | AML | other | m | 2018-04-22T08:09:45.10 |
IV.LATE.HHN. | ML:1.1 | 0.00005556343499999999 | 0.2944 | AML | other | m | 2018-04-22T08:09:46.19 |