A magnitude ML 1.4 earthquake occured in region: 8 km SW Pisa (PI), on
and geographic coordinates (lat, lon) 43.6700, 10.3260 at 4 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 |
---|---|---|---|---|
Pisa | PI | 8 | 89158 | 89158 |
Livorno | LI | 13 | 159219 | 248377 |
Vecchiano | PI | 14 | 12189 | 260566 |
San Giuliano Terme | PI | 14 | 31399 | 291965 |
Collesalvetti | LI | 15 | 16827 | 308792 |
Calci | PI | 17 | 6426 | 315218 |
Cascina | PI | 18 | 45257 | 360475 |
Fauglia | PI | 19 | 3682 | 364157 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
ML 1.4 | 2021-11-21 20:40:44 |
43.6702 | 10.3255 | 4 | 2022-03-30 13:04:36 |
Bollettino Sismico Italiano INGV | 100788621 |
Reviewed Rev100 |
ML 1.4 | 2021-11-21 20:40:44 |
43.6892 | 10.3113 | 4 | 2021-11-21 20:58:51 |
Sala Sismica INGV-Roma | 97666891 |
Field | Value |
---|---|
Time (UTC) | 2021-11-21 20:40:44 ± 0.21 |
Latitude | 43.6702 ± 0.0072 |
Longitude | 10.3255 ± 0.0137 |
Depth (km) | 4 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | earthquake |
Origin ID | 100788621 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1072 |
Semi-minor axis of confidence ellipse (meter) | 461 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 87 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1070.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 161 |
Number of associated phases, regardless of their use for origin computation | 33 |
Number of defining phases | 23 |
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) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.96227 |
Number of stations at which the event was observed | 25 |
Number of stations from which data was used for origin computation | 15 |
Field | Value |
---|---|
Value | 1.4 |
Uncertainty | 0.2 |
Num. used stations | 19 |
Type of magnitude | ML |
Reference to an origin | 100788621 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2022-02-08 17:18:07 |
Field | Value |
---|---|
Value | 1.4 |
Uncertainty | 0.2 |
Num. used stations | 19 |
Type of magnitude | ML |
Reference to an origin | 97666891 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-11-21 20:58:51 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.SELL.HHZ. | 2021-11-21T20:42:40.67 | 3.0 | negative | manual | Pg | 12.86 | 0 | |||
IV.POFI.HHZ. | 2021-11-21T20:42:26.09 | 3.0 | undecidable | manual | Sg | 5.82 | 0 | |||
IV.IVUG.HHZ. | 2021-11-21T20:42:22.47 | 3.0 | positive | manual | Pn | -1.12 | 0 | |||
IV.MTGR.HHZ. | 2021-11-21T20:42:17.83 | 3.0 | undecidable | manual | Pn | -2.22 | 0 | |||
IV.RCAV.EHZ. | 2021-11-21T20:42:09.46 | 3.0 | undecidable | manual | Sg | 1.48 | 0 | |||
IV.PP3.EHZ. | 2021-11-21T20:42:04.13 | 3.0 | undecidable | manual | Sg | 4.29 | 0 | |||
IV.PAOL.HHZ. | 2021-11-21T20:41:57.53 | 3.0 | undecidable | manual | Pg | 5.06 | 0 | |||
OT.OT17.EHZ. | 2021-11-21T20:41:52.02 | 3.0 | positive | manual | Pn | -1.6 | 0 | |||
IV.VENL.EHZ. | 2021-11-21T20:41:51.58 | 3.0 | undecidable | manual | Sn | -2.12 | 0 | |||
IV.MILN.HHZ. | 2021-11-21T20:41:22.46 | 3.0 | undecidable | manual | Pg | 2.09 | 0 | |||
IV.OSSC.HHZ. | 2021-11-21T20:41:09.17 | 0.6 | undecidable | manual | S | 102 | 75.6687 | 50 | 0.06 | 45 |
IV.TRIF.CHZ. | 2021-11-21T20:41:08.96 | 0.6 | undecidable | manual | S | 143 | 77.1672 | 50 | -0.55 | 40 |
IV.MPPT.EHZ. | 2021-11-21T20:41:07.75 | 0.6 | undecidable | manual | S | 62 | 68.9754 | 50 | 0.42 | 43 |
IV.CRMI.HHZ. | 2021-11-21T20:41:03.06 | 0.3 | undecidable | manual | S | 75 | 54.2013 | 50 | -0.32 | 67 |
IV.CASP.HHE. | 2021-11-21T20:41:03.91 | 0.3 | undecidable | manual | P | 156 | 106.8153 | 50 | 0.25 | 61 |
GU.POPM.HHZ. | 2021-11-21T20:41:02.95 | 0.3 | undecidable | manual | S | 40 | 54.0015 | 50 | -0.38 | 66 |
IV.CELB.HHE. | 2021-11-21T20:41:02.97 | 0.3 | undecidable | manual | P | 185 | 102.8193 | 50 | -0.07 | 64 |
GU.GRAM.HHZ. | 2021-11-21T20:41:02.21 | 0.3 | undecidable | manual | P | 347 | 93.3399 | 50 | 0.64 | 57 |
IV.MAGO.CHN. | 2021-11-21T20:41:01.38 | 0.6 | undecidable | manual | S | 149 | 51.5151 | 50 | -1.28 | 30 |
IV.TRIF.CHZ. | 2021-11-21T20:40:59.24 | 0.3 | undecidable | manual | P | 143 | 77.1672 | 50 | 0.16 | 66 |
IV.OSSC.HHZ. | 2021-11-21T20:40:59.83 | 0.3 | undecidable | manual | P | 102 | 75.6687 | 50 | 0.98 | 51 |
IV.MOCL.EHZ. | 2021-11-21T20:40:59.47 | 0.3 | undecidable | manual | P | 61 | 77.8665 | 50 | 0.28 | 65 |
GU.CARD.HHZ. | 2021-11-21T20:40:58.43 | 0.6 | undecidable | manual | S | 18 | 41.4252 | 95 | -0.83 | 38 |
IV.MPPT.EHZ. | 2021-11-21T20:40:58.14 | 0.1 | undecidable | manual | P | 62 | 68.9754 | 50 | 0.32 | 87 |
IV.CRMI.HHZ. | 2021-11-21T20:40:56.09 | 0.1 | negative | manual | P | 75 | 54.2013 | 50 | 0.55 | 84 |
GU.EQUI.HHZ. | 2021-11-21T20:40:55.60 | 0.3 | undecidable | manual | P | 346 | 56.6988 | 50 | -0.32 | 67 |
GU.SARM.EHE. | 2021-11-21T20:40:55.85 | 0.3 | undecidable | manual | P | 6 | 57.2982 | 50 | -0.17 | 69 |
GU.POPM.HHZ. | 2021-11-21T20:40:55.45 | 0.3 | undecidable | manual | P | 40 | 54.0015 | 50 | -0.06 | 71 |
IV.BDI.HHZ. | 2021-11-21T20:40:54.45 | 0.1 | undecidable | manual | P | 26 | 48.618 | 94 | -0.15 | 94 |
IV.MAGO.CHN. | 2021-11-21T20:40:54.84 | 0.1 | undecidable | manual | P | 149 | 51.5151 | 50 | -0.28 | 91 |
GU.CARD.HHZ. | 2021-11-21T20:40:53.18 | 0.3 | undecidable | manual | P | 18 | 41.4252 | 95 | 0.02 | 73 |
IV.PII.HHZ. | 2021-11-21T20:40:50.89 | 0.6 | undecidable | manual | S | 70 | 16.9719 | 102 | 0.02 | 51 |
IV.PII.HHZ. | 2021-11-21T20:40:48.22 | 0.1 | positive | manual | P | 70 | 16.9719 | 102 | -0.1 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.PII.HHN. | ML:1.9 | 0.000875 | 0.28 | AML | other | m | 2021-11-21T20:40:51.21 |
IV.PII.HHE. | ML:1.8 | 0.00067954075 | 0.1152 | AML | other | m | 2021-11-21T20:40:51.23 |
GU.CARD.HHE. | ML:1.3 | 0.00007147152500000001 | 0.128 | AML | other | m | 2021-11-21T20:41:00.83 |
IV.CRMI.HHE. | ML:1.2 | 0.00003635 | 0.2 | AML | other | m | 2021-11-21T20:41:03.27 |
GU.POPM.HHE. | ML:1.6 | 0.000095679 | 0.384 | AML | other | m | 2021-11-21T20:41:03.28 |
IV.CRMI.HHN. | ML:1.3 | 0.000047431885 | 0.1664 | AML | other | m | 2021-11-21T20:41:03.46 |
GU.POPM.HHN. | ML:1.6 | 0.00008981799 | 0.1536 | AML | other | m | 2021-11-21T20:41:03.65 |
GU.CARD.HHN. | ML:1.3 | 0.000074761845 | 1.7312 | AML | other | m | 2021-11-21T20:41:03.12 |
IV.BDI.HHE. | ML:1.2 | 0.000039619875 | 0.2816 | AML | other | m | 2021-11-21T20:41:05.59 |
GU.EQUI.HHN. | ML:1.0 | 0.000025716575 | 0.32 | AML | other | m | 2021-11-21T20:41:06.78 |
IV.BDI.HHN. | ML:1.4 | 0.0000628 | 1.68 | AML | other | m | 2021-11-21T20:41:06.10 |
IV.MPPT.EHE. | ML:1.2 | 0.00002905173 | 0.2816 | AML | other | m | 2021-11-21T20:41:08.90 |
IV.MPPT.EHN. | ML:1.4 | 0.000045902520000000004 | 0.1536 | AML | other | m | 2021-11-21T20:41:09.59 |
IV.OSSC.HHN. | ML:1.1 | 0.000021016325 | 1.5392 | AML | other | m | 2021-11-21T20:41:09.11 |
IV.OSSC.HHE. | ML:1.4 | 0.000035641809999999995 | 0.7936 | AML | other | m | 2021-11-21T20:41:12.72 |
IV.MOCL.EHN. | ML:1.6 | 0.000055400000000000005 | 0.34 | AML | other | m | 2021-11-21T20:41:12.84 |
IV.MOCL.EHE. | ML:1.6 | 0.000054620630000000006 | 0.3072 | AML | other | m | 2021-11-21T20:41:12.68 |
GU.GRAM.HHN. | ML:1.7 | 0.000055274119999999995 | 0.32 | AML | other | m | 2021-11-21T20:41:21.45 |
GU.GRAM.HHE. | ML:1.8 | 0.00006652844 | 1.6032 | AML | other | m | 2021-11-21T20:41:22.86 |