A magnitude ML 1.8 earthquake occured in region: Costa Ligure centro occidentale (Savona), on
and geographic coordinates (lat, lon) 44.0020, 8.6900 at 9 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.
No Italian municipalities within 20 km distance.
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
ML 1.8 | 2017-12-18 20:52:09 |
44.0025 | 8.6905 | 9 | 2018-09-04 09:10:41 |
Bollettino Sismico Italiano INGV | 53917951 |
Reviewed Rev100 |
ML 1.7 | 2017-12-18 20:52:10 |
44.0313 | 8.6662 | 5 | 2017-12-18 21:14:09 |
Sala Sismica INGV-Roma | 52663631 |
Field | Value |
---|---|
Time (UTC) | 2017-12-18 20:52:09 ± 0.37 |
Latitude | 44.0025 ± 0.0099 |
Longitude | 8.6905 ± 0.0088 |
Depth (km) | 9 ± 3 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | earthquake |
Origin ID | 53917951 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1027 |
Semi-minor axis of confidence ellipse (meter) | 601 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 4 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1030.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 90 |
Number of associated phases, regardless of their use for origin computation | 23 |
Number of defining phases | 23 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.31 |
Epicentral distance of station closest to the epicenter (degree) | 0.38491 |
Epicentral distance of station farthest from the epicenter (degree) | 1.47039 |
Number of stations at which the event was observed | 15 |
Number of stations from which data was used for origin computation | 15 |
Field | Value |
---|---|
Value | 1.8 |
Uncertainty | 0.2 |
Num. used stations | 12 |
Type of magnitude | ML |
Reference to an origin | 53917951 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2018-07-23 14:30:21 |
Field | Value |
---|---|
Value | 1.7 |
Uncertainty | 0.2 |
Num. used stations | 12 |
Type of magnitude | ML |
Reference to an origin | 52663631 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2017-12-18 21:14:09 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
GU.ENR.HHZ. | 2017-12-18T20:52:41.13 | 0.6 | undecidable | manual | S | 284 | 104.2179 | 50 | 0.45 | 42 |
RD.PGF.BHZ. | 2017-12-18T20:52:36.46 | 0.6 | undecidable | manual | P | 171 | 163.2144 | 50 | -0.34 | 36 |
GU.GORR.HHE. | 2017-12-18T20:52:35.39 | 0.6 | undecidable | manual | S | 35 | 82.3509 | 50 | 0.53 | 42 |
GU.SARM.EHZ. | 2017-12-18T20:52:33.50 | 0.3 | undecidable | manual | P | 81 | 137.7621 | 50 | 0.63 | 55 |
GU.GBOS.HHZ. | 2017-12-18T20:52:32.38 | 0.6 | undecidable | manual | S | 292 | 72.7716 | 50 | 0.09 | 48 |
IV.IMI.HHZ. | 2017-12-18T20:52:30.64 | 0.6 | undecidable | manual | S | 261 | 64.491 | 50 | 0.55 | 44 |
GU.EQUI.HHZ. | 2017-12-18T20:52:29.32 | 0.3 | undecidable | manual | P | 81 | 117.8931 | 50 | -0.5 | 60 |
GU.PCP.HHZ. | 2017-12-18T20:52:28.91 | 1.0 | undecidable | manual | S | 349 | 60.8946 | 50 | -0.22 | 24 |
GU.ENR.HHZ. | 2017-12-18T20:52:28.51 | 0.6 | undecidable | manual | P | 284 | 104.2179 | 50 | 0.81 | 36 |
IV.GROG.HHN. | 2017-12-18T20:52:28.83 | 0.3 | undecidable | manual | P | 123 | 115.5954 | 50 | -0.63 | 57 |
GU.RORO.HHZ. | 2017-12-18T20:52:26.39 | 0.6 | undecidable | manual | S | 284 | 51.2154 | 50 | -0.17 | 49 |
IV.PLMA.HHE. | 2017-12-18T20:52:25.74 | 0.3 | undecidable | manual | P | 86 | 92.9403 | 50 | -0.22 | 67 |
IV.QLNO.HHZ. | 2017-12-18T20:52:24.21 | 0.6 | undecidable | manual | S | 323 | 45.0216 | 50 | -0.69 | 43 |
GU.GORR.HHE. | 2017-12-18T20:52:24.77 | 0.3 | undecidable | manual | P | 35 | 82.3509 | 50 | 0.44 | 65 |
IV.MSSA.HHZ. | 2017-12-18T20:52:23.41 | 0.3 | undecidable | manual | P | 62 | 74.4699 | 50 | 0.29 | 68 |
GU.CANO.HHZ. | 2017-12-18T20:52:23.73 | 0.6 | undecidable | manual | S | 302 | 42.7239 | 50 | -0.55 | 45 |
GU.GBOS.HHZ. | 2017-12-18T20:52:22.95 | 0.1 | undecidable | manual | P | 292 | 72.7716 | 50 | 0.1 | 95 |
IV.IMI.HHZ. | 2017-12-18T20:52:21.84 | 0.3 | undecidable | manual | P | 261 | 64.491 | 50 | 0.26 | 70 |
GU.PCP.HHZ. | 2017-12-18T20:52:20.79 | 0.3 | undecidable | manual | P | 349 | 60.8946 | 50 | -0.24 | 71 |
GU.RNCA.HHZ. | 2017-12-18T20:52:20.39 | 0.1 | undecidable | manual | P | 22 | 55.9995 | 50 | 0.12 | 98 |
GU.RORO.HHZ. | 2017-12-18T20:52:19.50 | 0.1 | undecidable | manual | P | 284 | 51.2154 | 50 | -0.04 | 100 |
GU.CANO.HHZ. | 2017-12-18T20:52:18.08 | 0.1 | undecidable | manual | P | 302 | 42.7239 | 50 | -0.14 | 99 |
IV.QLNO.HHZ. | 2017-12-18T20:52:18.37 | 0.1 | undecidable | manual | P | 323 | 45.0216 | 50 | -0.21 | 98 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
GU.CANO.HHE. | ML:2.1 | 0.00042200000000000007 | 1.3 | AML | other | m | 2017-12-18T20:52:25.09 |
GU.CANO.HHN. | ML:1.9 | 0.000264 | 1.2 | AML | other | m | 2017-12-18T20:52:25.98 |
IV.QLNO.HHE. | ML:1.6 | 0.000135 | 0.24 | AML | other | m | 2017-12-18T20:52:26.33 |
IV.QLNO.HHN. | ML:1.7 | 0.0001595 | 0.24 | AML | other | m | 2017-12-18T20:52:26.62 |
GU.RORO.HHN. | ML:1.8 | 0.00015900000000000002 | 1.48 | AML | other | m | 2017-12-18T20:52:26.96 |
GU.RORO.HHE. | ML:2.0 | 0.00022849999999999997 | 1.02 | AML | other | m | 2017-12-18T20:52:26.97 |
GU.PCP.HHE. | ML:1.7 | 0.00009870000000000001 | 1.04 | AML | other | m | 2017-12-18T20:52:29.83 |
IV.IMI.HHE. | ML:1.7 | 0.00009135 | 0.84 | AML | other | m | 2017-12-18T20:52:30.84 |
GU.PCP.HHN. | ML:1.6 | 0.00009029999999999999 | 0.54 | AML | other | m | 2017-12-18T20:52:31.04 |
IV.IMI.HHN. | ML:1.9 | 0.00013744999999999998 | 0.26 | AML | other | m | 2017-12-18T20:52:31.91 |
GU.GBOS.HHN. | ML:1.6 | 0.00006984999999999999 | 0.52 | AML | other | m | 2017-12-18T20:52:33.16 |
GU.GBOS.HHE. | ML:1.5 | 0.000054800000000000004 | 1.08 | AML | other | m | 2017-12-18T20:52:33.57 |