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March 11, 2011 DART Data

On 2011/3/11 near HONSHU ISLAND, JAPAN (38.322°N, 142.369°E) at 5:46:23 (UTC), a magnitude 9.0 earthquake occurred.

This page provides data from the Deep-ocean Assessment and Reporting of Tsunami (DART®) buoys. Files contain raw observations, fitted tidal components, and residual tide values. There are 2 types of data:
1) 15-sec values as recorded by the Bottom Pressure Recorded (BPR) or
2) Real-time water level data as recorded by the Bottom Pressure Recorder (BPR) in extended-reporting mode containing measurement types of 15 minutes, 1 minute, and 15 seconds. Real-time data have been extracted from the National Data Buoy Center.

We have also provided the computed tides and details on the harmonic tidal analysis results. The source 15-sec data are in pounds per square inch absolute [psia], the tidal analysis is performed on that data. The real-time data are processed in PSIA to be compatible with the data from previous deployments. All tsunami event data as observations, fitted tides and residuals here are provided in meters water column using conversion factor of 670.0 mm of water/PSIA.

On the right of the Tsunami Travel Time map below there are links to individual data files under column Data. The columns in those files are as follows: Time in Julian days from the beginning of the year, Year, Month, Day, Hours, Minutes, Seconds, Raw Observations, Fitted tidal component, and computed residuals in meters water column. We have also provided details on the harmonic analysis results under column Tide.
Details on the methods for data processing. Event details: 2011 Honshu (Tohoku) tsunami event page
Tsunami Travel Time Map Near Field (Stations 21418 and 21413 only) Central Pacific East Pacific North Pacific West Pacific
Roll over map to select a location from the map above to view DART regional plots showing filtered data. Tsunami Travel Time (TTT) Map with DART locations produced using Tsunami Travel Times (TTT) software developed by Paul Wessel.

Download Regional DART Plots Download All Plots (.zip)
Download All Data (.zip)

Station Depth Latitude Longitude Data Tides
[m] [deg] [deg]
21401 5264 42.617 152.583 * *
21413 5874 30.528 152.123 * *
21414 5431 48.937 178.251 * *
21415 4681 50.176 171.849 * *
21416 5600 48.042 163.486 * *
21418 5500 38.718 148.698 * *
21419 5285 44.455 155.735 * *
32401 4799 -19.2970 -74.7460 * *
32411 3297 4.936 -90.653 * *
32412 4364 -17.972 -86.392 * *
32413 3894 7.4003 -93.4989 * *
43412 3232 16.031 -107.001 * *
43413 3600 10.840 -100.085 * *
46402 4760 51.068 -164.005 * *
46403 4510 52.649 -156.921 * *
46404 2775 45.858 -128.797 * *
46407 3500 42.595 -128.894 * *
46408 5382 49.624 -169.853 * *
46409 4210 55.300 -148.492 * *
46410 3783 57.617 -143.800 * *
46411 4302 39.328 -127.013 * *
46412 3776 32.455 -120.557 * *
46419 2775 48.7596 -129.6104 * *
51406 4450 -8.480 -125.030 * *
51407 4710 19.620 -156.511 * *
51425 4962 -9.504 -176.230 * *
51426 5686 -22.9911 -168.1031 * *
52402 5708 11.882 154.111 * *
52403 4489 4.032 145.596 * *
52405 5695 12.881 132.334 * *
52406 1849 -5.293 165.002 * *
54401 5836 -33.003 -172.987 * *
55012 3284 -15.7989 158.4003 * *
55013 4920 -46.6650 161.0010 * *
55023 4595 -14.8000 53.5800 * *