Capturing coastal water clarity variability with Landsat 8

MARINE POLLUTION BULLETIN

卷:145

Article

Luis, Kelly M. A.¹  Rheuban, Jennie E.²  Kavanaugh, Maria T.³  Glover, David M.²  Wei, Jianwei¹  Lee, Zhongping¹  Doney, Scott C.^2,4 

[1] Univ Massachusetts, Sch Environm, Boston, MA 02125 USA

[2] Woods Hole Oceanog Inst, Dept Marine Chem & Geochem, Woods Hole, MA 02543 USA

[3] Oregon State Univ, Coll Earth Ocean & Atmospher Sci, Corvallis, OR 97330 USA

[4] Univ Virginia, Dept Environm Sci, Charlottesville, VA 22904 USA

关键词: Water quality;    Secchi disk depth;    Remote sensing;    Landsat;   

DOI  :  10.1016/j.marpolbul.2019.04.078

来源: Elsevier

【 摘 要 】

Coastal water clarity varies at high temporal and spatial scales due to weather, climate, and human activity along coastlines. Systematic observations are crucial to assessing the impact of water clarity change on aquatic habitats. In this study, Secchi disk depths (Z(SD)) from Boston Harbor, Buzzards Bay, Cape Cod Bay, and Narragansett Bay water quality monitoring organizations were compiled to validate Z(SD) derived from Landsat 8 (L8) imagery, and to generate high spatial resolution Z(SD) maps. From 58 L8 images, acceptable agreement was found between in situ and L8 Z(SD) in Buzzards Bay (N = 42, RMSE = 0.96 m, MAPD = 28%), Cape Cod Bay (N = 11, RMSE = 0.62 m, MAPD = 10%), and Narragansett Bay (N = 8, RMSE = 0.59 m, MAPD = 26%). This work demonstrates the value of merging in situ Z(SD) with high spatial resolution remote sensing estimates for improved coastal water quality monitoring.

【 授权许可】

Free