Earthquake 1 km NE Montieri (GR), Magnitude ML 2.1, 4 March 2013 time 21:33:55 (Timezone Italy)

A magnitude ML 2.1 earthquake occured in region: 1 km NE Montieri (GR), on

04-03-2013 20:33:55 (UTC)
04-03-2013 21:33:55 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.1360, 11.0250 at 8 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.

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Display location by

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).

Municipality	Region	Distance (km)	Inhabitants	Cumulative Inhabitants
Montieri	GR	1	1204	1204
Chiusdino	SI	6	1903	3107
Castelnuovo di Val di Cecina	PI	13	2231	5338
Monticiano	SI	13	1571	6909
Monterotondo Marittimo	GR	14	1371	8280
Radicondoli	SI	14	914	9194
Massa Marittima	GR	15	8375	17569
Roccastrada	GR	18	9199	26768

Municipalities with at least 50000 inhabitants

An earthquake occurred to

32 Km SW of Siena (53903 inhabitants)

42 Km N of Grosseto (82087 inhabitants)

71 Km S of Scandicci (50609 inhabitants)

73 Km S of Firenze (382808 inhabitants)

74 Km SE of Livorno (159219 inhabitants)

79 Km W of Arezzo (99543 inhabitants)

82 Km SE of Pisa (89158 inhabitants)

83 Km S of Prato (191150 inhabitants)

89 Km S of Pistoia (90315 inhabitants)

90 Km SE of Lucca (89046 inhabitants)

Recent and historical seismicity

Not available maps for this sismic event.

Seismic hazard

Not available maps for this sismic event.

Shakemap

Not available maps for this sismic event.

Felt maps

Not available maps for this sismic event.

Locations history

Type	Magnitude	Date and Time (UTC)	Latitude	Longitude	Depth (km)	Published time (UTC)	Author	Location ID
Bulletin Rev1000	ML 2.1	2013-03-04 20:33:55	43.1357	11.0253	9	2015-01-20 11:23:57	Bollettino Sismico Italiano INGV	3222221
Reviewed Rev100	ML 2.2	2013-03-04 20:33:55	43.1303	11.042	8	2014-10-21 12:08:56	Sala Sismica INGV-Roma	3019731

Preferred location and magnitude until now.

Origin information

Origin

Field	Value
Time (UTC)	2013-03-04 20:33:55 ± 0.12
Latitude	43.1357 ± 0.0063
Longitude	11.0253 ± 0.0099
Depth (km)	9 ± 1 (from location)
Evaluation mode of Origin	manual
Evaluation status of Origin	reviewed
Version	1000 -> BULLETIN-INGV
Event type	earthquake
Origin ID	3222221

Uncertainty

Field	Value
Preferred uncertainty description	uncertainty ellipse
Semi-major axis of confidence ellipse (meter)	669
Semi-minor axis of confidence ellipse (meter)	536
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)	287
Circular confidence region, given by single value of horizontal uncertainty (meter)	670.0
Confidence level of the uncertainty (%)	68

Quality

Field	Value
Largest azimuthal gap in station distribution as seen from epicenter (degree)	77
Number of associated phases, regardless of their use for origin computation	28
Number of defining phases	28
RMS of the travel time residuals of the arrivals used for the origin computation (sec)	0.43
Epicentral distance of station closest to the epicenter (degree)	0.09173
Epicentral distance of station farthest from the epicenter (degree)	1.01893
Number of stations at which the event was observed	19
Number of stations from which data was used for origin computation	19

Magnitudes information

ML:2.1

Field	Value
Value	2.1
Uncertainty	0.4
Num. used stations	18
Type of magnitude	ML
Reference to an origin	3222221
Agency	INGV
Autore	Manually reviewed by Franco Mele
Time of creation (UTC)	2015-01-15 12:55:14

ML:2.2

Field	Value
Value	2.2
Uncertainty	0.5
Num. used stations	18
Type of magnitude	ML
Reference to an origin	3019731
Agency	INGV
Autore	Sala Sismica INGV-Roma
Time of creation (UTC)	2013-03-04 20:50:50

Picking and Arrival

SCNL	Time	Uncertainty	Polarity	Evaluation_mode	Phase	Azimuth	Distance(km)	Takeoff_angle	Residual	Weight
IV.MTCR.EHZ.	2013-03-04T20:34:24.72	0.1	undecidable	manual	S	359	99.0231	50	-0.56	76
GU.MAIM.HHZ.	2013-03-04T20:34:23.54	0.6	undecidable	manual	S	334	96.4257	50	-1.06	31
IV.MAON.HHZ.	2013-03-04T20:34:20.31	0.1	undecidable	manual	S	174	78.9654	50	0.39	83
IV.CRMI.HHZ.	2013-03-04T20:34:18.02	0.3	undecidable	manual	S	357	73.2711	50	-0.4	63
IV.MCIV.HHZ.	2013-03-04T20:34:16.39	0.1	undecidable	manual	S	127	66.0894	50	-0.09	91
IV.PARC.HHZ.	2013-03-04T20:34:15.67	0.1	undecidable	manual	P	59	113.0979	50	0.66	71
IV.BADI.EHZ.	2013-03-04T20:34:14.79	0.1	undecidable	manual	P	67	106.7154	50	0.76	69
IV.MTCR.EHZ.	2013-03-04T20:34:13.30	0.1	undecidable	manual	P	359	99.0231	50	0.46	79
IV.ATMC.EHZ.	2013-03-04T20:34:13.90	0.1	undecidable	manual	P	69	100.4217	50	0.85	67
IV.ASQU.HHZ.	2013-03-04T20:34:12.80	0.1	undecidable	manual	P	40	95.7264	50	0.47	79
IV.PTF.SHZ.	2013-03-04T20:34:12.01	0.1	undecidable	manual	P	2	91.5417	50	0.32	82
GU.MAIM.HHZ.	2013-03-04T20:34:12.71	0.3	undecidable	manual	P	334	96.4257	50	0.27	62
IV.MGAB.HHZ.	2013-03-04T20:34:11.55	0.3	undecidable	manual	P	105	91.5417	50	-0.14	64
IV.ARCI.HHZ.	2013-03-04T20:34:11.00	0.3	undecidable	manual	S	131	48.2184	50	-0.72	59
IV.MAON.HHZ.	2013-03-04T20:34:10.18	0.1	undecidable	manual	P	174	78.9654	50	0.44	82
IV.CELB.HHZ.	2013-03-04T20:34:10.54	0.3	undecidable	manual	P	237	78.9654	50	0.79	54
IV.CAFI.HHZ.	2013-03-04T20:34:09.65	0.1	undecidable	manual	P	74	79.0653	50	-0.1	88
IV.SACS.HHZ.	2013-03-04T20:34:09.82	0.3	undecidable	manual	P	114	78.4659	50	0.15	66
IV.CRMI.HHZ.	2013-03-04T20:34:08.81	0.1	undecidable	manual	P	357	73.2711	50	-0.06	90
IV.CASP.HHZ.	2013-03-04T20:34:08.65	0.1	undecidable	manual	S	199	40.4262	50	-0.99	71
IV.MCIV.HHZ.	2013-03-04T20:34:07.69	0.1	undecidable	manual	P	127	66.0894	50	-0.07	91
IV.ARCI.HHZ.	2013-03-04T20:34:04.68	0.1	undecidable	manual	P	131	48.2184	50	-0.32	89
IV.CASP.HHZ.	2013-03-04T20:34:03.55	0.1	undecidable	manual	P	199	40.4262	50	-0.26	92
IV.CSNT.HHZ.	2013-03-04T20:34:03.87	0.1	undecidable	manual	P	30	43.1235	50	-0.35	90
IV.TRIF.HHZ.	2013-03-04T20:34:00.34	0.1	undecidable	manual	S	257	10.1787	130	-0.1	100
IV.FROS.HHZ.	2013-03-04T20:34:00.74	0.1	undecidable	manual	S	52	13.3755	122	-0.59	88
IV.TRIF.HHZ.	2013-03-04T20:33:58.68	0.1	undecidable	manual	P	257	10.1787	130	0.19	98
IV.FROS.HHZ.	2013-03-04T20:33:58.90	0.1	undecidable	manual	P	52	13.3755	122	-0.11	99

Station Magnitude and Amplitude

SCNL	mag	Generic_amplitude	Period	Type	Category	Unit	Time_window_reference
IV.ARCI.HHE.	ML:2.4	0.0007295	0.5	AML	other	m	2013-03-04T20:34:11.26
IV.ARCI.HHN.	ML:2.3	0.0005800000000000001	0.66	AML	other	m	2013-03-04T20:34:12.51
IV.ASQU.HHN.	ML:1.8	0.00006309999999999999	0.48	AML	other	m	2013-03-04T20:34:30.63
IV.ASQU.HHE.	ML:1.7	0.0000552	1.58	AML	other	m	2013-03-04T20:34:32.79
IV.CAFI.HHE.	ML:1.7	0.00006375	0.64	AML	other	m	2013-03-04T20:34:25.22
IV.CAFI.HHN.	ML:1.6	0.0000497	1.14	AML	other	m	2013-03-04T20:34:25.20
IV.CASP.HHN.	ML:3.0	0.0031	0.28	AML	other	m	2013-03-04T20:34:08.82
IV.CASP.HHE.	ML:2.7	0.0017549999999999998	0.4	AML	other	m	2013-03-04T20:34:09.20
IV.CELB.HHN.	ML:2.6	0.00062	0.46	AML	other	m	2013-03-04T20:34:21.95
IV.CELB.HHE.	ML:2.4	0.000317	0.38	AML	other	m	2013-03-04T20:34:23.33
IV.CRMI.HHE.	ML:1.4	0.00003895	0.3	AML	other	m	2013-03-04T20:34:18.71
IV.CRMI.HHN.	ML:1.3	0.0000286	1.2	AML	other	m	2013-03-04T20:34:19.44
IV.CSNT.HHN.	ML:2.2	0.0005235	0.22	AML	other	m	2013-03-04T20:34:09.43
IV.CSNT.HHE.	ML:2.2	0.0004445	0.3	AML	other	m	2013-03-04T20:34:09.94
IV.FROS.HHN.	ML:2.9	0.00802	0.22	AML	other	m	2013-03-04T20:34:00.96
IV.FROS.HHE.	ML:2.9	0.008315000000000001	0.46	AML	other	m	2013-03-04T20:34:01.16
IV.LAV9.HHE.	ML:3.3	0.000498	0.28	AML	other	m	2013-03-04T20:34:35.11
GU.MAIM.HHE.	ML:1.7	0.0000571	1.58	AML	other	m	2013-03-04T20:34:24.18
GU.MAIM.HHN.	ML:1.9	0.0000766	1.12	AML	other	m	2013-03-04T20:34:25.78
IV.MAON.HHE.	ML:2.4	0.00039200000000000004	0.2	AML	other	m	2013-03-04T20:34:21.36
IV.MAON.HHN.	ML:2.6	0.0004955	0.24	AML	other	m	2013-03-04T20:34:21.41
IV.MCIV.HHE.	ML:2.2	0.0002635	0.96	AML	other	m	2013-03-04T20:34:18.52
IV.MCIV.HHN.	ML:2.3	0.000357	0.34	AML	other	m	2013-03-04T20:34:18.21
IV.MGAB.HHN.	ML:1.7	0.00006105	0.4	AML	other	m	2013-03-04T20:34:29.02
IV.MGAB.HHE.	ML:1.7	0.0000597	1.26	AML	other	m	2013-03-04T20:34:29.41
IV.MTCR.EHN.	ML:2.0	0.0001100000000000001	0.42	AML	other	m	2013-03-04T20:34:29.24
IV.MTCR.EHE.	ML:1.8	0.00007000000000000006	1.58	AML	other	m	2013-03-04T20:34:28.75
IV.PARC.HHE.	ML:1.6	0.0000355	0.5	AML	other	m	2013-03-04T20:34:38.02
IV.PARC.HHN.	ML:1.7	0.00003695	0.72	AML	other	m	2013-03-04T20:34:35.38
GU.POPM.HHE.	ML:2.1	0.000127	0.24	AML	other	m	2013-03-04T20:34:29.08
GU.POPM.HHN.	ML:2.1	0.000128	0.6	AML	other	m	2013-03-04T20:34:29.62
IV.SACS.HHE.	ML:1.7	0.00006900000000000001	0.46	AML	other	m	2013-03-04T20:34:24.46
IV.SACS.HHN.	ML:1.6	0.00005025	0.64	AML	other	m	2013-03-04T20:34:27.30
IV.TRIF.HHN.	ML:2.8	0.008195000000000001	0.14	AML	other	m	2013-03-04T20:34:00.74
IV.TRIF.HHE.	ML:2.8	0.008115	0.88	AML	other	m	2013-03-04T20:34:01.86

TDMT - Time Domain Moment Tensor

Not available TDMT solution for this seismic event.

Fault Plane solutions in the area

Not available maps for this sismic event.

Download

Type	Description	Link
QuakeML - small	Event, Origin, FocalMechanism	Download
QuakeML - full	Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude	Download
Waveforms	Seismic signals in miniseed + resp format	Download

Earthquake with magnitude of ML 2.1 on date 04-03-2013 and time 21:33:55 (Italy) in region 1 km NE Montieri (GR)

Municipalities within 20 km from the epicenter

Municipalities with at least 50000 inhabitants

Origin

Uncertainty

Quality

ML:2.1

ML:2.2