DOI: 10.1002/2014GL060126
论文题名: Sinking velocity of particulate radiocesium in the northwestern North Pacific
作者: Honda M.C. ; Kawakami H.
刊名: Geophysical Research Letters
ISSN: 0094-10555
EISSN: 1944-10286
出版年: 2014
卷: 41, 期: 11 起始页码: 3959
结束页码: 3965
语种: 英语
英文关键词: marine snow
; radiocesium
; sediment trap
; sinking velocity
; TEPCO Fukushima Daiichi Nuclear Power Plant accident
Scopus关键词: Nuclear reactor accidents
; Sediment traps
; Fukushima Dai-ichi Nuclear Power Plant accidents
; Marine snow
; North Pacific
; Organic materials
; Radiocesium
; Sinking particles
; Sinking velocity
; Time-series sediment trap
; Cesium
; aluminosilicate
; cesium
; concentration (composition)
; marine sediment
; sediment trap
; time series
; water depth
; Pacific Ocean
; Pacific Ocean (North)
英文摘要: Sinking particles (SP) were collected by time series sediment traps at two depths in the northwestern Pacific before and after the Fukushima Daiichi Nuclear Power Plant accident, and accident-derived particulate radiocesium was measured. Radiocesium (137Cs) was first detected at 500m (4810m) about 2weeks (1month) after the accident. 137Cs of SP collected over 1year revealed that the time lag between two depths was larger than that for the first 137Cs detection (about 2weeks). We estimated the transient sinking velocity (SV) from the cumulative temporal 137Cs flux and the time lags at the two depths. Although the SV of SP collected in very early period was large, the estimated SV of most particulate 137Cs (about 80%) was about 50md-1. Based on comparison of 137Cs concentration in total SP with that in SP without organic materials, we suspect that most of the 137Cs was likely incorporated into aluminosilicates. © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901737123&doi=10.1002%2f2014GL060126&partnerID=40&md5=9c25d3c7e2a127ff28f87ab600d3a48b
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7819
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Department of Environmental Geochemical Cycle Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Japan
Recommended Citation:
Honda M.C.,Kawakami H.. Sinking velocity of particulate radiocesium in the northwestern North Pacific[J]. Geophysical Research Letters,2014-01-01,41(11).