Download - Samdra atlantik
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Samudra Atlantik
• Nama Atlantik berasal dari Atlas (mitologi Yunani) , menjadiAtlantik artinya Laut Atlas
• Samudra terbesar kedua di dunia setelah samudrapasifik . Dengan total luas sekitar 106.400.000 km² @ 20% Permukaan bumi.
• Samudra Atlantik berbentuk memanjang dengan cekungan berbentuk S, memanjang secara longitudinal antara Eurasia dan Afrika ke timur dan Amerika barat
• Terhubung dengan: Samudra Arktik di utara , SamuderaPasifik di barat daya, Samudera Hindia di tenggara, dan Samudra Selatan di selatan
• Garis khatulistiwa membagi Atlantik menjadi dua yaitu Samudra Atlantik Utara dan Samudra Atlantik Selatan.
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• Didasar samudra atlantik terbentang bukit bawah laut (Mid-Atlantic Ridge), tebentang dari Islandia sampai ke 58º lintang selatan
• Mid-Atlantic Ridge memisahkan Samudra Atlantik menjadidua cekungan utama (di utara dan selatan khatulistiwa)yang dibagi lagi menjadi beberapa cekungan lainnya.
• Di Atlantik Utara, cekungan laut yang paling menonjoladalah: cekungan Baffin, cekungan Hudson, cekunganLabrador, cekungan Newfoundland dan lembah Utara Amerika
• Atlantik memiliki kedalaman rata-rata 3.660 m
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Atlantik ocean surface
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FORCING
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NORTH ATLANTIC CIRCULATION
• Subtropical Circulation
• Gulf Stream System
• North Atlantic Current
• Canary and Portugal Current Systems
• Subpolar Circulation
• North Atlantic Eddy Variability and Gulf StreamRings
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Sirkulasi Atlantik utara
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Gulf Stream System
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Sea surface temperature from the GOES satellite
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Canary Current System
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Labrador Curent
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Tropical Atlantic Circulation
• We describe the circulation in the tropical
Atlantic briefly, reserving a more complete
description of typical features of equatorial
circulation for the Pacific
• The tropical circulation responds strongly to the trade wind forcing, which has large seasonaldominant surface flow is westward, in the SouthEquatorial Current (SEC)
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South Atlantic Circulation
• Subtropical Gyre
• Brazil Current
• Malvinas Current and Subantarctic Front
• Benguela Current System
• South Atlantic Eddy Variability
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Sirkulasi Atlantik Selatan
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DEPTH Dependence OF THE ATLANTIC OCEAN CIRCULATION
• Depth Dependence of the Wind-Driven Circulation
• Deep Circulation and Deep Western BoundaryCurrents
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Masa Air Samudra Atlantik
• Secara vertikal terdiri dari 4 struktur,yaitu: pycnocline, intermediate,deep, and abyssal.
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Potensi Suhu, Salinitas, Oxygendan Densitas
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“Terima Kasih...