文章基本信息

标题：Development of Kd(490) Algorithm Using Medium Spatial Resolution Landsat 8 OLI Arround Shallow Waters In Panggang Island
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作者：Budhi Agung Prasetyo ; Wikanti Asriningrum ; Vincentius Paulus Siregar 等
期刊名称：Journal of Applied Geospatial Information
电子版ISSN：2579-3608
出版年度：2021
卷号：5
期号：1
页码：413-423
DOI：10.30871/jagi.v5i1.2773
语种：English
出版社：Politeknik Negeri Batam
摘要：The state of water quality around Panggang Island, Seribu Islands, in recent decades, experienced degradation caused by human activities. The parameter of the diffuse attenuation coefficient (Kd) is an important optical property-related attenuation of light in the water column and its brightness. Landsat 8 data has the potential to map the value of Kd(490) in regional waters in Indonesia. Landsat 8 data could provide solutions to spatial data availability of Kd(490) values in addition to Ocean Color data. This research aimed to develop an empirical algorithm of Landsat 8 data to derive Kd(490) value, that can be used as tools for monitoring water quality optically on a regional scale, which could not be done by Ocean Color data that has spatial resolution limitation. The in-situ measurement of radiometric data was done using the TriOS-RAMSES hyperspectral spectroradiometer with a range of 320 – 890 nm and a spectral sampling of 3.3 nm shallow-waters around Panggang Island. The development of the Kd(490) algorithm was done by simulation on the ratio of Green, and Near-infrared band has great determination values with Kd(490) empirically. That empirical algorithm can be applied on Landsat 8 data to derive its values. It is also noted that the shallow-waters around Panggang Island, dominant affected by absorption of chlorophyll-a rather than scattering by suspended solids.
关键词：Diffuse Attenuation Coefficient;Kd(490);Landsat 8;Ocean Color;Algorithm