File:Lake Tai, China ESA21456724.jpeg
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描述Lake Tai, China ESA21456724.jpeg |
English: The Copernicus Sentinel-2 mission takes us over the Lake Tai, the third largest freshwater lake in China. The lake, also known as Lake Taihu, is located in the Jiangsu province and is approximately 70 km long and 60 km wide, with an average water depth of approximately 2 metres. The lake discharges its waters through Wusong, Liu, Huangpu and several other rivers. The Tai Basin is a very developed region in China, and includes the megacities Suzhou, visible east of the lake, Wuxi, visible north of the lake, and the nearby Shanghai. Over the past decades, rapid urbanisation, population growth and excessive fish farming have resulted in eutrophication – where the lake becomes enriched with minerals and nutrients. The increase of nutrients deteriorate the water quality of the lake causing toxic algae blooms to form on the lake’s surface – threatening the quality for millions of people who depend on the lake as a source of drinking water. In 2007, the algal blooms were so severe that the outbreak was declared a health emergency. Water supplies to Wuxi were suspended, leaving two million residents without drinking water for several weeks. In this image captured on 24 May 2019, the algae-infested waters are clearly visible. Algae blooms have been reported in the lake since the 1980s. Many attempts have been made to salvage the water quality of the lake including removal of the algae, closing chemical and manufacturing plants near Tai and stricter water treatment regulations. However, the lake remains to be highly polluted. Agriculture, sewage and manufacturing still affect the lake’s waters – overloading it with nutrients. Sentinel-2 is a two-satellite mission to supply the coverage and data delivery needed for Europe’s Copernicus programme. The mission’s frequent revisits over the same area and high spatial resolution allow changes in inland water bodies to be closely monitored. This image is also featured on the Earth from Space video programme. |
日期 | 2019年11月15日 (上传日期) |
来源 | Lake Tai, China |
作者 | European Space Agency |
其他版本 |
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Activity InfoField | Observing the Earth |
Mission InfoField | Sentinel-2 |
Set InfoField | Earth observation image of the week |
System InfoField | Copernicus |
许可协议[编辑]
此图像包含来自哥白尼计划中的卫星的数据,例如哨兵1号、哨兵2号或哨兵3号。使用此图片时需要注明出处。
署名: 包含修改后的哥白尼哨兵数据2019
Attribution
哥白尼哨兵数据的使用受欧盟法律监管(委员会授权条例 (EU) No 1159/2013和条例 (EU) No 377/2014)。相关摘录:
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Attribution
This media was created by the European Space Agency (ESA).
Where expressly so stated, images or videos are covered by the Creative Commons Attribution-ShareAlike 3.0 IGO (CC BY-SA 3.0 IGO) licence, ESA being an Intergovernmental Organisation (IGO), as defined by the CC BY-SA 3.0 IGO licence. The user is allowed under the terms and conditions of the CC BY-SA 3.0 IGO license to Reproduce, Distribute and Publicly Perform the ESA images and videos released under CC BY-SA 3.0 IGO licence and the Adaptations thereof, without further explicit permission being necessary, for as long as the user complies with the conditions and restrictions set forth in the CC BY-SA 3.0 IGO licence, these including that:
See the ESA Creative Commons copyright notice for complete information, and this article for additional details.
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本文件采用知识共享署名-相同方式共享 3.0 政府间组织许可协议授权。 署名: ESA, CC BY-SA IGO 3.0
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日期/时间 | 缩略图 | 大小 | 用户 | 备注 | |
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当前 | 2020年6月7日 (日) 12:59 | 10,980 × 10,980(27.46 MB) | OptimusPrimeBot(留言 | 贡献) | #Spacemedia - Upload of https://www.esa.int/var/esa/storage/images/esa_multimedia/images/2019/11/lake_tai_china/21456714-1-eng-GB/Lake_Tai_China.jpg via Commons:Spacemedia |
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方位 | 标准 |
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水平分辨率 | 72 dpi |
垂直分辨率 | 72 dpi |
使用软件 | Adobe Photoshop CC 2019 (Windows) |
文件修改日期时间 | 2019年7月2日 (二) 16:50 |
色彩空间 | 无标定 |
数字化日期时间 | 2019年7月1日 (一) 18:14 |
原始数据最后修改日期 | 2019年7月2日 (二) 18:50 |
原始文件唯一ID | xmp.did:e3c96ff5-87ca-3b4c-8a52-027ce4434726 |