Tracing offshore low-salinity plumes in the Northeastern Gulf of Mexico during the summer season by use of multispectral remote-sensing data SCIE SCOPUS

Cited 18 time in WEB OF SCIENCE Cited 16 time in Scopus
Title
Tracing offshore low-salinity plumes in the Northeastern Gulf of Mexico during the summer season by use of multispectral remote-sensing data
Author(s)
Son, Young Baek; Gardner, Wilford D.; Richardson, Mary Jo; Ishizaka, Joji; Ryu, Joo-Hyung; Kim, Sang-Hyun; Lee, Sang H.
KIOST Author(s)
Son, Young Baek(손영백)Ryu, Joo Hyung(유주형)
Publication Year
2012-10
Abstract
To trace offshore surface low-salinity water (LSW) in the northeastern Gulf of Mexico, a proxy was developed using the surface water beam attenuation coefficient (c (p)), and salinity matched with synchronous Sea-viewing Wide Field-of-view Sensor (SeaWiFS) satellite data from three annual summer cruises (July 1998-August 2000) using a two-step empirical approach. First, a relationship between in-situ salinity and c (p) was obtained. Second, in-situ c (p) was matched with SeaWiFS radiance ratios of all available blue-to-green wavelengths. Finally, satellite-derived surface salinity was determined directly by combining the two empirical relationships, providing a robust estimate over a range of salinities (26-36). This significantly improves the limited spatial and temporal resolution of surface salinity distribution obtained by shipboard sampling. The resulting correlation is best explained as mixing between low-salinity plume waters and normal salinity Gulf waters. The empirical relationships were used to map satellite-derived salinity using the average of SeaWiFS images during each summer cruise. As expected for summer, spatial patterns of LSW plumes with high c (p), particulate matter (PM), particulate organic carbon (POC), and chlorophyll-a (Chl-a) were connected to the mouth of the Mississippi River Delta and extended to the east-southeast. Normal salinity Gulf water with lower c (p), PM, POC, and Chl-a was confined to the shelf and upper slope in the eastern part of the study area, outside the plumes. This proxy approach can be applied throughout the region of shipboard sampling for more detailed coverage and analysis.
ISSN
0916-8370
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/3446
DOI
10.1007/s10872-012-0131-y
Bibliographic Citation
JOURNAL OF OCEANOGRAPHY, v.68, no.5, pp.743 - 760, 2012
Publisher
SPRINGER
Subject
PARTICULATE ORGANIC-CARBON; MISSISSIPPI RIVER; WESTERN GULF; ATTENUATION COEFFICIENT; CONTINENTAL-MARGIN; BEAM ATTENUATION; CHLOROPHYLL-A; POC; VARIABILITY; ALGORITHMS
Keywords
Low-salinity water (LSW); Beam attenuation coefficient; Satellite-derived salinity; Gulf of Mexico; SeaWiFS; MNDCI
Type
Article
Language
English
Document Type
Article
Publisher
SPRINGER
Related Researcher
Research Interests

Coastal Remote Sensing,RS based Marine Surveillance System,GOCI Series Operation,연안 원격탐사,원격탐사기반 해양감시,천리안해양관측위성 운영

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