File:The Beauty of Copernicus ESA22371273.gif
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[править]ОписаниеThe Beauty of Copernicus ESA22371273.gif |
English: The images of Russia’s Ozero Nayval Lagoon and surrounding rivers show multiple views from Copernicus satellites. The first is a 10-m resolution ‘camera-like’ image captured on 29 October 2020 by Copernicus Sentinel-2. The peninsula lies on the eastern part of the Bearing Straits. The land-bound lagoon, various river and lake features are clearly visible. The image is marked with the ground track of Copernicus Sentinel-6 as it crosses the region. The second is a radar image captured on 29 November 2020 by Copernicus Sentinel-1 in interferometric wide swath mode and processed to 10 m resolution. The radar look direction is from the right with layover effects seen on the mountainous region to the left of the image. The lagoon has frozen over and numerous cracks are visible in the ice. Ocean swell and wind sea roughness are also seen in the ocean with some wave reflection and refraction on the southern coastal areas. The next image uses Copernicus Sentinel-6 pulse-limited low-resolution mode data for the same area. In this mode, similar to Jason-3, the strongest radar reflections appear as overlapping parabola features, but no discrimination of the ground can be made. Overlying the third image, the Copernicus Sentinel-6 Poseidon-4 fully-focused synthetic aperture radar image reveals features of the Ozero Nayvak Peninsular in fine detail. The high performance and low noise of Poseidon-4 when processed using these ESA-developed techniques reveals exceptional results. In this example, the altimeter data were first processed at a resolution of 1.1 m in the azimuth direction (left to right) and <0.4 m in the range direction (vertical). These data are then further multi-looked in azimuth to reduce speckle noise providing an image at a resolution of ~30 m. The radar backscatter power is coded by colour as a function of across-track range and clearly reveals the vertical elevation of sea ice in the lagoon and low-lying river and lake features. Unlike the Sentinel-1 image, the Sentinel-6 Poseiodon-4 radar is illuminating the scene from the north and in this case, ocean wave structure and refraction at the coastline can be clearly seen. Read full story: Sea-level monitoring satellite first results surpass expectations Français : Ces trois images du lagon de l'Ozero Nayval situé sur la côte occidentale du fr:détroit de Béring en Russie démontrent les capacités des satellites Sentinel du fr:programme Copernicus. La première photo à gauche a été prise avec une fr:résolution spatiale de 10 mètres par un satellite fr:Sentinel-2 le 29 octobre 2020. Elle montre le lagon entouré de terres, la rivière et les caractéristiques du lac. La fr:trace au sol du satellite Sentinel-6 lors de son survol est précisée. La deuxième image a été prise le 29 novembre en mode interférométrique par le fr:radar à synthèse d'ouverture d'une satellite fr:Sentinel-1 avec une résolution spatiale de 10 mètres. On distingue les reliefs montagneux sur la gauche. Le lagon a gelé et de nombreuses craquelures sont visibles dans la glace. La houle sur la mer est visible. La troisième image contient des images de fr:Sentinel-6 prise en mode pulsé avec une résolution spatiale basse. Le radar Poseidon-4 de Sentinel-6 permet de distinguer des détails plus fins. L'fr:altimètre radar, dont la précision est de 1,1 m dans le sens du déplacement du satellite et de 0,4 dans la direction orthogonale, permet de mettre évidence l'épaisseur de la glace dans le lagon, le lac et la rivière (codé en couleurs). |
Дата | 10 декабря 2020 (дата загрузки) |
Источник | The Beauty of Copernicus |
Автор | contains modified Copernicus Sentinel data (2020) processed by ESA/Aresys |
Activity InfoField | Observing the Earth |
Mission InfoField | Sentinel-1 Sentinel-2 Sentinel-6 |
System InfoField | Copernicus |
Лицензирование
[править]This image contains data from a satellite in the Copernicus Programme, such as Sentinel-1, Sentinel-2 or Sentinel-3. Attribution is required when using this image.
Атрибуция: Contains modified Copernicus Sentinel data 2020
Attribution
The use of Copernicus Sentinel Data is regulated under EU law (Commission Delegated Regulation (EU) No 1159/2013 and Regulation (EU) No 377/2014). Relevant excerpts:
Free access shall be given to GMES dedicated data [...] made available through GMES dissemination platforms [...].
Access to GMES dedicated data [...] shall be given for the purpose of the following use in so far as it is lawful:
GMES dedicated data [...] may be used worldwide without limitations in time.
GMES dedicated data and GMES service information are provided to users without any express or implied warranty, including as regards quality and suitability for any purpose. |
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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Этот файл доступен по лицензии Creative Commons Attribution-Share Alike 3.0 IGO. Атрибуция: ESA/Aresys, CC BY-SA IGO 3.0
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текущий | 12:41, 10 декабря 2020 | 1947 × 756 (1,98 МБ) | OptimusPrimeBot (обсуждение | вклад) | #Spacemedia - Upload of https://www.esa.int/var/esa/storage/images/esa_multimedia/images/2020/12/the_beauty_of_copernicus/22371262-1-eng-GB/The_Beauty_of_Copernicus.gif via Commons:Spacemedia |
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