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Tag: Satellite

Video » Lake Titicaca from Space

Lake Titicaca, which borders both Bolivia and Peru, is one of the largest freshwater lakes in South America.

The video is brought to us by the European Space Agency (ESA).

Covering an area of around 8300 sq km, Lake Titicaca lies on the high Andes plateau and straddles the border between Peru (to the west) and Bolivia (to the east). It is considered the highest major body of navigable water in the world, as it sits at an elevation of 3800 m above sea level.

More information is available from the ESA.

Video » Banks Peninsula, New Zealand from Space

The video of the Banks Peninsula, on the South Island of New Zealand, is presented by the European Space Agency (ESA).

Banks Peninsula, visible in the bottom-right of the image, consists of two overlapping extinct volcanoes: the Lyttelton Volcano and the Akaroa Volcano. The peninsula was formed by several volcanic eruptions that took place around eight million years ago. The name of the peninsula comes from Sir Joseph Banks, a British biologist who sailed with Captain Cook.

Breaches in the crater walls led to the formation of two long, thin harbours: Lyttelton in the north and Akaroa in the south. The peninsula also has many other smaller bays and coves, giving it its unusual, cogwheel shape. Christchurch, the largest city on South Island, is visible immediately north of Banks Peninsula.

The jagged coastline heavily contrasts with the adjoining, flat Canterbury Plains. Extending around 80 km inland from the coast to the foothills of the Southern Alps, visible in the top-left of the image, the plains are a rich agricultural region known for wheat and barley, as well as wool and livestock.

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Video » Amazon River from Space

The European Space Agency (ESA) brings us a video of the Amazon River meandering through one of the most vital ecosystems in the world, the Amazon rainforest, and six countries in South America.

The Amazon River originates in the Andes Mountains of Peru and travels through EcuadorColombiaVenezuela, Bolivia, and Brazil before emptying into the Atlantic Ocean.

The Amazon river begins its journey in the Andes and makes its way east through six South American countries before emptying into the Atlantic Ocean on the northeast coast of Brazil. The river has a length of around 6400 km – the equivalent of the distance from New York City to Rome.

The Amazon is considered the widest river in the world with a width of between 1.6 and 10 km, but expands during the wet season to around 50 km. With more than 1000 tributaries, the Amazon River is the largest drainage system in the world in terms of the volume of its flow and the area of its basin. As a consequence of its ever-changing flow, older riverbeds can be seen as thin lines around the main river at the top of the image.

One of its tributaries, the Javari River, or Yavari River, is visible as a thinner blue line weaving through the tropical rainforest. The river flows for 870 km, forming the border between Brazil and Peru, before joining the Amazon River.

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Video » San Francisco Bay from Space

This video from space of San Francisco Bay, California is brought to us by the European Space Agency (ESA).

San Francisco Bay, almost 100 km in length, is a shallow estuary surrounded by the San Francisco Bay Area – an extensive metropolitan region that is dominated by large cities such as San Francisco, Oakland and San Jose. The densely populated urban areas around the bay contrast strongly with the surrounding green forest and park areas.

In the upper right of the image, the delta of the Sacramento and San Joaquin rivers is visible – with the brown, sediment-filled water flowing down into San Pablo Bay. Here, the murky waters mix before flowing into the larger bay area, which is connected to the Pacific Ocean via the Golden Gate strait. A large sediment plume can be seen travelling westward into the Pacific in the left of the image.

The Golden Gate Bridge, around 2.7 km long, is visible crossing the opening of the bay into the Pacific Ocean between Marin County and the city of San Francisco – which can be seen at the tip of the southern peninsula in the centre of the image. Treasure, Angel and Alcatraz islands can be seen sticking out of the waters of the bay, with several bridges connecting its east and west shores. Several boats are also visible.

The bright green and yellow colours in the bottom right of the image are salt ponds and are part of the Don Edwards National Wildlife Refuge. Covering an area of around 120 sq km, the refuge contains salt marsh, mudflat and vernal pool habitats for millions of migratory birds and endangered species.

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