[:ja]アフリカ東岸のインド洋に浮かぶマダガスカル島。島の中央には3000m級の山々が連なりますが、そこから525kmに渡って流れるベツィボカ川の複雑な河口です。
マダガスカルの東側には熱帯雨林、西側にはマングローブやサバンナが広がっています。源流からマングローブなどを通過した川は、熱帯雨林の土壌に特徴的な鉄・アルミニウムの酸化物が多く赤褐色の強いシルトを含み、河口で堆積しています。
ウェブ地球儀で地球俯瞰画像を見る： LiVEARTH
[Earthview Wonders] No.94: Betsiboka River Delta of Madagascar
Madagascar is a large island in the Indian Ocean, east of Africa. In the middle of the island lie 3000km mountains from which Betsiboka River runs 525km to form an intricate river delta.
On the eastern side of Madagascar stretches rainforest and Mangrove and Savannah on the western side. The Betsiboka River passing through the Mangrove contains reddish iron and aluminum oxides, characteristic silt sediment of the rainforest which pile up at the river delta.
See earthview photo gallery with web-globe: LiVEARTH[:en][Earthview Wonders] No.94: Betsiboka River Delta of Madagascar
Madagascar is a large island in the Indian Ocean, east of Africa. In the middle of the island lie 3000km mountains from which Betsiboka River runs 525km to form an intricate river delta.
On the eastern side of Madagascar stretches rainforest and Mangrove and Savannah on the western side. The Betsiboka River passing through the Mangrove contains reddish iron and aluminum oxides, characteristic silt sediment of the rainforest which pile up at the river delta.
See earthview photo gallery with web-globe: LiVEARTH[:]