Author Topic: Earth from space: image of the week  (Read 144756 times)

Online jacqmans

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Re: Earth from space: image of the week
« Reply #400 on: 11/28/2016 08:52 AM »
Japan
 
Sentinel-3A captured part of Japan on 12 May in this false-colour image. Sitting on a volcanic zone in the Pacific Ring of Fire, Japan is prone to earthquakes – like the one felt earlier this week. In 2011 the Tōhoku earthquake and subsequent tsunami caused widespread damage and claimed over 15 000 lives.
 
In this image we can make out the location of the Median Tectonic Line – a fault system running primarily northeast–southwest in the southern part of the country. While it is impossible to see the fault line itself, rivers formed along the line and the fields and buildings in these river basins are visible as linear elements in the lower left part of the image on the smaller islands, giving a sense of the general location of the fault.
 
The water surrounding the islands appears blue on the left side of the image, but dark grey on the right. This is an effect of the Sun glinting off the water.
 
Taking a closer look at the waters along the coast, the light blue areas show the outflow of rivers, carrying sediments into the ocean.
 
Launched in February 2016, the Copernicus Sentinel-3A satellite carries four sensors working together, making it the most complex of all the Sentinel missions. The Ocean and Land Colour Instrument used to create this image offers a new eye on Earth, monitoring ocean ecosystems, supporting crop management and agriculture, and providing estimates of atmospheric aerosol and clouds.
 
This image is featured on the Earth from Space video programme.
 
Credit: contains modified Copernicus Sentinel data (2016), processed by ESA

Offline emulatormania

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Re: Earth from space: image of the week
« Reply #401 on: 12/01/2016 04:36 PM »
Amazing Image

Offline eeergo

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Re: Earth from space: image of the week
« Reply #402 on: 06/19/2017 06:13 AM »
Appalling image from Terra of the deadly (upwards of 60 casualties) fires in Portugal this weekend: 200 square kilometers of scorched land.
-DaviD-

Online jacqmans

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Re: Earth from space: image of the week
« Reply #403 on: 07/14/2017 08:44 AM »
Vesuvius on fire
 
With Italy suffering high temperatures and drought, wildfires have broken out including blazes that are ravaging the slopes of Mount Vesuvius near Naples. Using images taken by the Copernicus Sentinel-2B satellite on 12 July 2017, the animation combines different sensor bands to highlight the numerous separate fires around this iconic volcano and the smoke billowing over the surrounding area.
 
This huge plume of smoke led some to believe that Vesuvius was erupting again. The last time it erupted was back in 1944, but is most famous for the 79 AD eruption that destroyed Pompeii.
 
The smoke from these fires poses the biggest threat and has forced several evacuations this week. The wooded slopes of Vesuvius form part of the Vesuvio National Park, which was set up in 1995 to protect the volcano and surroundings. Much of the woodland is now destroyed.
 
Vesuvius is the only active volcano on mainland Europe. The animation also shows another fire and smoke near Positano on the Amalfi coast.
 
The Sentinel-2 mission is based on a constellation of two identical satellites: Sentinel-2A and Sentinel-2B. Each carries a high-resolution multispectral camera working in 13 wavelength bands for a new perspective on land and vegetation. The combination of high-resolution, novel spectral capabilities, a field of vision covering 290 km and frequent revisit times is providing unprecedented views of Earth. Information from this mission is helping to improve agricultural practices, monitor the world’s forests, detect pollution in lakes and coastal waters, and contribute to disaster mapping.
 
Credit: contains modified Copernicus Sentinel data (2017),
« Last Edit: 07/14/2017 08:45 AM by jacqmans »

Online jacqmans

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Re: Earth from space: image of the week
« Reply #404 on: 07/21/2017 09:02 AM »
Northeastern Europe
 

The Copernicus Sentinel-3 satellite takes us over the Baltic Sea and surrounding countries.
 
Snow, ice and clouds dominate the image, providing us with an overall view of the area’s climate when this image was captured on 6 March. Sentinel-3 offers a ‘bigger picture’ for Europe’s Copernicus programme by systematically measuring Earth’s oceans, land, ice and atmosphere to monitor and understand large-scale global dynamics.
 
Finland is positioned at the centre of the image. The country has been called the ‘land of a thousand lakes’ – most of which are covered by ice and snow in this image.
 
To its west is the Gulf of Bothnia, the northernmost arm of the Baltic Sea separating part of Finland from Sweden. Clouds on the lower left obstruct our view of the Swedish capital, Stockholm.
 
In the upper left we can see part of Norway’s coastline with its famed fjords. During the ice age, ice and rivers carved deep valleys in the mountains. As the climate changed, most of the ice melted and the valleys were gradually filled with salt water from the coast, giving birth to the fjords.
 
Russia dominates the right side of the image with the ice-covered Lake Onega and partially covered Lake Ladoga.
 
Estonia is visible in the lower-central part of the image with significantly less snow cover, but with large areas of ice along its coast and on Lake Peipus.

 
Credit: contains modified Copernicus Sentinel data (2017), processed by ESA

Online jacqmans

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Re: Earth from space: image of the week
« Reply #405 on: 07/21/2017 09:04 AM »
MAKS-2017
 
The Space Resource Remote Sensing Satellite "Resurs-P" (part of the orbital group ROSKOSMOSA) took a snapshot of the territory at which the International Aviation and Space Salon (MAKS-2017) is taking place.

Offline yoichi

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Re: Earth from space: image of the week
« Reply #406 on: 07/26/2017 07:04 AM »
http://www.eorc.jaxa.jp/ALOS-2/en/img_up/dis_pal2_ant-iceshelf_20170725.htm

ALOS-2/PALSAR-2 Observation results on detachment of a large iceberg from Larsen-C Ice Shelf in Antarctic Peninsula.

Larsen is one of the huge ice shelves in Antarctica. Larsen-A and -B experienced the destructions in 1995 and 2002, respectively. Larsen Ice Shelf affects the ice loss in west Antarctica and its contribution to global sea level rise. Therefore, many glaciologists have paid much attention to their dynamics. On 12th July, 2017, a large iceberg separated from Larsen-C Ice Shelf, which is the expected weight of approx. one trillion ton, and the surface area is about 5,800 km2. Due to its size, ALOS-2 ScanSAR mode (Observation width: 350 km) is suitable for capturing the entire portion of the iceberg.

Color composite images acquired on 21th July 2017 (left) and 19th Aug 2016 (right).

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