INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of Mwp 6.0 on date 13-02-2018 and time 02:11:44 (Italy) in region Northern Mariana Islands Guam [Sea]

A magnitude Mwp 6.0 earthquake occured in region: Northern Mariana Islands Guam [Sea], on

  • 13-02-2018 01:11:44 (UTC)
  • 13-02-2018 02:11:44 (UTC +01:00) Italian time
  • 13-02-2018 11:11:44 (UTC +10:00) local time in the region of the earthquake (Pacific/Saipan)

and geographic coordinates (lat, lon) 13.73, 146.56 at 18 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.

Municipalities within 20 km from the epicenter

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

No Italian municipalities within 100 km from the epicenter with at least 50000 inhabitants.

Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 mb 5.2
Mwp 6.0

Mwpd 6.2
2018-02-13
01:11:44
13.73 146.57 18 2018-02-13
01:31:57
Sala Sismica INGV-Roma 53866441
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-02-13 01:11:44
Latitude 13.73
Longitude 146.57
Depth (km) 18 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 53866441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 20002
Semi-minor axis of confidence ellipse (meter) 719
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 357
Circular confidence region, given by single value of horizontal uncertainty (meter) 16145.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 119.659
Number of associated phases, regardless of their use for origin computation 40
Number of defining phases 40
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.84699
Epicentral distance of station closest to the epicenter (degree) 1.65464
Epicentral distance of station farthest from the epicenter (degree) 67.32283
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 35
Magnitudes information

Mwp:6

Field Value
Value 6
Uncertainty 0.1
Num. used stations 9
Type of magnitude Mwp
Reference to an origin 53866441
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-02-13 01:31:57

Mwpd:6.2

Field Value
Value 6.2
Uncertainty 0.1
Num. used stations 8
Type of magnitude Mwpd
Reference to an origin 53866441
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-02-13 01:31:57

mb:5.2

Field Value
Value 5.2
Uncertainty 0.1
Num. used stations 27
Type of magnitude mb
Reference to an origin 53866441
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-02-13 01:31:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.COLA.BHZ.00 2018-02-13T01:22:43.02 10.0 negative automatic sP 25 67.3228 -0.204514 0
IU.COLA.BHZ.00 2018-02-13T01:22:39.10 10.0 negative automatic P 25 67.3228 2.66974 0.286036
GE.MALK.BHZ. 2018-02-13T01:22:20.82 10.0 positive automatic P 273 64.834 0.396552 0.159287
II.KDAK.BHZ.00 2018-02-13T01:22:13.15 10.0 negative automatic P 31 63.0555 4.41515 0.368824
AK.TNA.BHZ. 2018-02-13T01:21:50.87 10.0 positive automatic P 20 60.1446 1.79282 0.425522
IU.TIXI.BHZ.00 2018-02-13T01:21:38.52 10.0 positive automatic P 354 58.8741 -1.77898 0.276325
JP.JMM.BHZ. 2018-02-13T01:21:35.30 10.0 positive automatic S 349 24.6756 13.3134 0
IO.EVN.BHZ. 2018-02-13T01:21:28.70 10.0 positive automatic P 295 57.0748 0.156937 0.424011
IU.BILL.BHZ.00 2018-02-13T01:21:18.57 10.0 positive automatic P 9 55.8429 -0.388936 0.473006
AU.MORW.BHZ. 2018-02-13T01:20:49.37 10.0 positive automatic P 214 51.9687 -1.26573 0.453355
AU.TOO.BHZ. 2018-02-13T01:20:48.90 10.0 negative automatic P 181 51.3111 3.12071 0.49769
GE.GSI.BHZ. 2018-02-13T01:20:34.87 10.0 positive automatic P 260 50.006 -0.970392 0.476108
AU.FORT.BHZ. 2018-02-13T01:20:19.42 10.0 positive automatic P 202 47.934 -0.544328 0.609382
AU.HTT.BHZ. 2018-02-13T01:20:17.42 10.0 positive automatic P 189 47.7208 -0.984901 0.578286
IU.ULN.BHZ.00 2018-02-13T01:20:14.37 10.0 positive automatic P 324 47.2465 -0.502778 0.560687
GE.MNAI.BHZ. 2018-02-13T01:20:10.47 10.0 positive automatic P 250 46.8974 -1.4289 0.400747
MY.KUM.BHZ. 2018-02-13T01:20:05.42 10.0 positive automatic P 264 45.9837 0.71325 0.504284
IU.CHTO.BHZ.00 2018-02-13T01:20:03.97 10.0 positive automatic P 283 45.8638 0.146189 0.589379
IU.MBWA.BHZ.00 2018-02-13T01:19:46.50 10.0 negative automatic P 218 43.7209 -0.208759 0.685423
AU.WRKA.BHZ. 2018-02-13T01:19:36.97 10.0 positive automatic P 205 42.6648 -1.27205 0.696789
RM.SLV.BHZ. 2018-02-13T01:19:27.47 10.0 positive automatic P 287 41.2515 0.769896 0.67513
G.DZM.BHZ.00 2018-02-13T01:19:23.55 10.0 positive automatic P 151 40.764 0.825435 0.732634
GE.JAGI.BHZ. 2018-02-13T01:19:06.42 10.0 positive automatic P 237 39.0873 -2.2512 0.353076
AU.FITZ.BHZ. 2018-02-13T01:18:58.40 10.0 positive automatic P 214 37.9361 -0.589058 0.778357
MY.SBM.BHZ. 2018-02-13T01:18:40.72 10.0 positive automatic P 255 35.7632 0.200393 0.758947
AU.MTN.BHZ. 2018-02-13T01:17:55.52 10.0 negative automatic P 211 30.6599 -0.482628 0.92722
AU.KDU.BHZ. 2018-02-13T01:17:47.90 10.0 positive automatic P 208 29.8818 -1.21399 0.842105
AU.COEN.BHZ. 2018-02-13T01:17:32.02 10.0 negative automatic P 187 27.891 0.560619 0.963855
GE.SANI.BHZ. 2018-02-13T01:17:10.67 10.0 positive automatic P 234 25.7921 -1.84969 0.909091
JP.JMM.BHZ. 2018-02-13T01:17:01.60 10.0 positive automatic P 349 24.6756 -0.782938 0.869565
IU.MAJO.BHZ.00 2018-02-13T01:16:52.77 10.0 positive automatic P 343 24.0086 -3.58472 0.43956
IU.PMG.BHZ.00 2018-02-13T01:16:49.27 10.0 positive automatic P 179 23.1433 1.36571 0.930233
JP.JGF.BHZ. 2018-02-13T01:16:49.40 10.0 positive automatic P 341 23.3874 -1.16206 0.869565
JP.JMN.BHZ. 2018-02-13T01:16:46.65 10.0 positive automatic P 332 23.0779 -0.646426 0.851064
GE.FAKI.BHZ. 2018-02-13T01:16:35.67 10.0 positive automatic P 221 21.8831 1.13405 0.769231
JP.JOW.BHZ. 2018-02-13T01:16:32.00 10.0 negative automatic P 310 21.5396 1.13691 0.952381
IU.GUMO.BHZ.00 2018-02-13T01:12:10.22 10.0 positive automatic P 265 1.6546 -0.547534 0.869565
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download