Investigating subsurface pathways of Fukushima cesium in the Northwest Pacific
Date
2019-06-18Author
Cedarholm, Ella R.
Concept link
Rypina, Irina I.
Concept link
Macdonald, Alison M.
Concept link
Yoshida, Sachiko
Concept link
Metadata
Show full item recordCitable URI
https://hdl.handle.net/1912/24556As published
https://doi.org/10.1029/2019GL082500DOI
10.1029/2019GL082500Keyword
Fukushima tracer; Transport across Kuroshio Extension current; Subsurface pathways and barriers; Mode waters; Particle trackingAbstract
Advective pathways for Fukushima Daiichi Nuclear Power Plant (FDNPP)‐derived cesium observed in 2013 at 166°E south of the Kuroshio Extension (KE) at >500 m on the 26.5σθ isopycnal are investigated. Attention is paid to the KE's role in shaping these pathways. Using a high‐resolution model, particle trajectories were simulated backward and forward in time on 26.5σθ between the 2013 observations and the 2011 source. A large fraction of backtracked trajectories interacted with the mixed layer just offshore of the FDNPP. The likeliest pathway reaching the deepest 2013 observed cesium location runs along the KE out to ~165°E, where it turns sharply southward. Forward trajectory statistics suggest that for 26.5σθ waters originating north of the KE, this current acted as a permeable barrier west of 155–160°E. The deepest 2011 model mixed layers suggest that FDNPP‐derived radionuclides may have been present at 30°N in 2013 at greater depths and densities (700 m; 26.8σθ).
Description
A© The Author(s), 2019. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Cedarholm, E. R., Rypina, I. I., Macdonald, A. M., & Yoshida, S. Investigating subsurface pathways of Fukushima cesium in the Northwest Pacific. Geophysical Research Letters, 46(12), (2019): 6821-6829, doi:10.1029/2019GL082500.
Collections
Suggested Citation
Cedarholm, E. R., Rypina, I. I., Macdonald, A. M., & Yoshida, S. (2019). Investigating subsurface pathways of Fukushima cesium in the Northwest Pacific. Geophysical Research Letters, 46(12), 6821-6829.The following license files are associated with this item:
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 International
Related items
Showing items related by title, author, creator and subject.
-
Desorption behavior of Fukushima-derived radiocesium in sand collected from Yotsukura Beach in Fukushima prefecture
Nagao, Seiya; Terasaki, Soichiro; Ochiai, Shinya; Fukushi, Keisuke; Tomihara, Seiichi; Charette, Matthew A.; Buesseler, Ken O. (The Japan Society for Analytical Chemistry, 2020-05-10)Beach sand samples were collected along a coastal area 32 km south of the Fukushima Daiichi Nuclear Power Plant (FDNPP) in Fukushima Prefecture, Japan, 5 years after the FDNPP accident. Desorption experiments were performed ... -
Metadata and accessions for comparative single-cell genomics of Chloroflexi from the Okinawa Trough deep subsurface biosphere from DV/Chikyu OIDP stations, Sept-Oct. 2010 (Subsurface FeOBs project)
Moyer, Craig L.; Fullerton, Heather (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2021-03-03)Metadata and accessions for comparative single-cell genomics of Chloroflexi from the Okinawa Trough deep subsurface biosphere from DV/Chikyu OIDP stations, Sept-Oct. 2010; with links to NCBI and IMG repositories. For a ... -
Investigation on acoustic reception pathways in finless porpoise (Neophocaena asiaorientalis sunameri) with insight into an alternative pathway
Song, Zhongchang; Zhang, Yu; Mooney, T. Aran; Wang, Xianyan; Smith, Adam B.; Xu, Xiaohui (2018-10)Sound transmission and reception are both vital components to odontocete echolocation and daily life. Here, we combine computed tomography (CT) scanning and Finite Element Modeling to investigate the acoustic propagation ...