File:Spooky sights from space- world’s largest acidic lake ESA25162180.jpg
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[edit]DescriptionSpooky sights from space- world’s largest acidic lake ESA25162180.jpg |
English: What’s spookier than the ‘largest acid cauldron on Earth?’ In East Java, Indonesia, lies the Kawah Ijen Crater Lake – the world’s largest acidic lake, a chilling spectacle perfect for Halloween. The images here have been captured by the Copernicus Sentinel-2 mission which provides optical images of Earth’s surface. In the true-colour image in the left, we can see Kawah Ijen with its striking turquoise blue waters. Although seemingly inviting, the lake is filled with a high concentration of sulphuric and hydrochloric acids, as well as dissolved minerals. Though this deems the lake unswimmable, it makes it incredibly easy to spot from space. The water in the Kawah Ijen Crater Lake has pH values as low as 0.5, similar to the strength of car battery acid. The image on the right, on the other hand, takes on a horror-style palette for Halloween. It has been processed including a specific band from Sentinel-2 that is often used for coastal water and ocean colour observation. By using this band combination, the Kawah Ijen Crater Lake shows a higher reflectance compared to their surroundings, with the lake’s waters appearing electric blue. The lake's unnaturally high acidity is not its sole frightening characteristic. It also emits hot, flammable sulphurous gases that ignite as they enter Earth’s oxygen-rich atmosphere. These then burn with an eerie, blue flame, creating an enchanting nighttime spectacle. Also seen in the images is the Raung, or Gunung Raung Volcano, one of the most active volcanoes on the island of Java. With an impressive height of 3332 m, it looms in the immediate southwest vicinity. |
Date | 31 October 2023 (upload date) |
Source | Spooky sights from space: world’s largest acidic lake |
Author | European Space Agency |
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Activity InfoField | Observing the Earth |
Mission InfoField | Sentinel-2 |
System InfoField | Copernicus |
Licensing
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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.
Attribution: Contains modified Copernicus Sentinel data 2023
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. |
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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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current | 06:00, 1 November 2023 | ![]() | 1,561 × 1,311 (1.42 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://www.esa.int/var/esa/storage/images/esa_multimedia/images/2023/10/acid_lake_of_kawah_ijen_indonesia/25162090-2-eng-GB/Acid_lake_of_Kawah_Ijen_Indonesia.jpg via Commons:Spacemedia |
06:00, 1 November 2023 | ![]() | 2,404 × 2,018 (1.22 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://www.esa.int/var/esa/storage/images/esa_multimedia/images/2023/10/spooky_sights_from_space_world_s_largest_acidic_lake/25162169-2-eng-GB/Spooky_sights_from_space_world_s_largest_acidic_lake.jpg via Commons:Spacemedia |
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