English  |  正體中文  |  简体中文  |  Items with full text/Total items : 28326/40319
Visitors : 4082571      Online Users : 194
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/44341

Title: The coastal sea surface temperature changes near the nuclear power plants of northern Taiwan observed from satellite images
Authors: Shih-Jen Huang;Jung-Te Lin;Yao-Tsai Lo;Nan-Jung Kuo;Chung-Ru Ho
Contributors: 國立臺灣海洋大學:海洋環境資訊系
Date: 2016-04
Issue Date: 2017-11-21T08:22:10Z
Publisher: IEEE
Abstract: Abstract:In order to estimate the thermal plumes discharged from Chinshan and Kuosheng nuclear power plants on the coast of north Taiwan, this study uses the thermal infrared data from Landsat 7 ETM+(Enhanced Thematic Mapper Surface Temperature) to contrast with the in-situ SST measurement for the intake/discharge ports of the nuclear power plants. The near-infrared (band 4) data of Landsat 7 ETM+ are firstly applied to distinguish ocean and land, and then the thermal infrared (band 6) data are used to estimate SST. The algorithm of SST on north Taiwan is established in this study by the contrast between the in-situ SST data of the two nuclear power plants and the thermal infrared data of Landsat 7 ETM+. The standard deviation of SST retrieved through this algorithm is estimated to be 3.1°C, but the mean difference is near 0. According to the retrieved SST from the satellite data, the warm-plume (>4°C than offshore SST) discharge of Chinshan nuclear power plant reaches 540-1080 m far from its discharge port, but for Kuosheng Nuclear Power Plant, the farthest of the warm-plume discharge from the discharge port is 390-900 m. The retrieved SST gradually gets cooler by diffusion from the discharge port to the offshore. Apparently, the Landsat 7 ETM+ can be applied to measure the special variance of SST. The result also shows the area of significant thermal plume (>4°C than offshore SST) are about 0.01-1.3 km2 and 0.09-8.53 km2 for the Chinshan and Kuosheng nuclear plants respectively. Moreover, the significant thermal plume area is affected by tides. During the flood tide, the warm-plume discharge gets close to the coast, and it will make the significant thermal plume area increase. Besides, the second significant thermal plume (>2°C than offshore SST) is also increased during the ebb tide because the thermal plume may be taken away and diluted from the discharged port. However, due to different topographies, the area of thermal plume of the Kuosheng is broader than that of Chinshan nuclear power plant.
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/44341
Appears in Collections:[海洋環境資訊系] 演講及研討會

Files in This Item:

There are no files associated with this item.

All items in NTOUR are protected by copyright, with all rights reserved.


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback