Numerical simulations of debris drift from the Great Japan Tsunami of 2011 and their verification with observational reports

Maximenko, Nikolai; Hafner, Jan; Kamachi, Masafumi; MacFadyen, Amy

doi:10.1016/j.marpolbul.2018.03.056

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Numerical simulations of debris drift from the Great Japan Tsunami of 2011 and their verification with observational reports

2018
By Maximenko, Nikolai ; Hafner, Jan ; Kamachi, Masafumi ; ...
Source: Marine Pollution Bulletin, 132, 5-25

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Journal Title:

Marine Pollution Bulletin
Personal Author:

Maximenko, Nikolai ; Hafner, Jan ; Kamachi, Masafumi ; MacFadyen, Amy

Maximenko, Nikolai ; Hafner, Jan ; Kamachi, Masafumi ; MacFadyen, Amy Less -
NOAA Program & Office:

NOS (National Ocean Service) ; ORR (Office of Response and Restoration)

NOS (National Ocean Service) ; ORR (Office of Response and Restoration) Less -
Description:

A suite of five ocean models is used to simulate the movement of floating debris generated by the Great Japan Tsunami of 2011. This debris was subject to differential wind and wave-induced motion relative to the ambient current (often termed “windage”) which is a function of the shape, size, and buoyancy of the individual debris items. Model solutions suggest that during the eastward drift across the North Pacific the debris became “stratified” by the wind so that objects with different windages took different paths: high windage items reached North America in large numbers the first year, medium windage items recirculated southwest toward Hawaii and Asia, and low windage items collected in the Subtropical Gyre, primarily in the so-called “garbage patch” area located northeast of Hawaii and known for high concentrations of microplastics. Numerous boats lost during the tsunami were later observed at sea and/or found on the west coast of North America: these observations are used to determine optimal windage values for scaling the model solutions. The initial number of boats set adrift during the tsunami is estimated at about 1000, while about 100 boats are projected to still float in year 2018 with an e-folding decay of 2 to 8 years.
Keywords:

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Data Analysis Marine Debris Ocean Circulation
Source:

Marine Pollution Bulletin, 132, 5-25
DOI:

https://doi.org/10.1016/j.marpolbul.2018.03.056
ISSN:

0025-326X
Publisher:

Elsevier BV
Document Type:

Journal Article
License:

https://creativecommons.org/licenses/by-nc-nd/4.0/
Rights Information:

CC BY-NC-ND
Rights Statement:

This manuscript is made available under the Elsevier user license https://www.elsevier.com/open-access/userlicense/1.0/
Compliance:

Library
Main Document Checksum:

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urn:sha256:00d1faa79afdb78afee0b197a02f99a524d20765e2ed2658afeda5a56c4a06fc
Download URL:

https://repository.library.noaa.gov/view/noaa/50670/noaa_50670_DS1.pdf
File Type:

Available dataset

htm

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