DOI: 10.1002/2015GL067521
论文题名: Satellite-based empirical models linking river plume dynamics with hypoxic area and volume
作者: Le C. ; Lehrter J.C. ; Hu C. ; Obenour D.R.
刊名: Geophysical Research Letters
ISSN: 0094-9217
EISSN: 1944-8948
出版年: 2016
卷: 43, 期: 6 起始页码: 2693
结束页码: 2699
语种: 英语
英文关键词: hypoxia
; Louisiana continental shelf
; river plume
; river plume color index
; satellite remote sensing
Scopus关键词: Image reconstruction
; Radiometers
; Regression analysis
; Remote sensing
; Satellites
; Color index
; Continental shelves
; hypoxia
; River plume
; Satellite remote sensing
; Rivers
; anoxic conditions
; chlorophyll a
; color
; MODIS
; nutrient enrichment
; regression analysis
; remote sensing
; river plume
; satellite altimetry
; seasonality
; Atlantic Ocean
; Gulf of Mexico
; Louisiana Shelf
; Mississippi River
; United States
英文摘要: Satellite-based empirical models explaining hypoxic area and volume variation were developed for the seasonally hypoxic (O2 < 2 mg L-1) northern Gulf of Mexico adjacent to the Mississippi River. Annual variations in midsummer hypoxic area and volume were related to Moderate Resolution Imaging Spectroradiometer-derived monthly estimates of river plume area (km2) and average, inner shelf chlorophyll a concentration (Chl a, mg m-3). River plume area in June was negatively related with midsummer hypoxic area (km2) and volume (km3), while July inner shelf Chl a was positively related to hypoxic area and volume. Multiple regression models using river plume area and Chl a as independent variables accounted for most of the variability in hypoxic area (R2 = 0.92) or volume (R2 = 0.89). These models explain more variation in hypoxic area than models using Mississippi River nutrient loads as independent variables. The results here also support a hypothesis that confinement of the river plume to the inner shelf is an important mechanism controlling hypoxia area and volume in this region. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84971632033&doi=10.1002%2f2015GL067521&partnerID=40&md5=279b67570c007c6827a2e8e4cc8cd817
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10180
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Ocean College, Zhejiang University, Hangzhou, China
Recommended Citation:
Le C.,Lehrter J.C.,Hu C.,et al. Satellite-based empirical models linking river plume dynamics with hypoxic area and volume[J]. Geophysical Research Letters,2016-01-01,43(6).