Tasik

Tasik (Jawi: ‏تاسيق‎code: ms is deprecated ‎) atau danau (Jawi: داناو‎) ialah sejenis sifat rupa bumi atau sifat fizikal yang berbentuk takungan air pedalaman beraliran perlahan lebih besar, luas^[1] dan dalam berbanding kolam serta bukan sebahagian lautan, di mana ia tidak semestinya ditempatkan di bawah lembangan (satu lagi ciri-ciri rupa bumi) dan disalurkan oleh sungai.^[2]^[3]

Tasik-tasik semula jadi biasanya terdapat di kawasan pergunungan, zon rengkahan, dan kawasan yang baru atau sering mengalami pengglasieran. Tasik-tasik lain pula dijumpai di lembangan endoreik atau sepanjang aliran sungai matang. Di sesetengah tempat di dunia terdapat banyak sekali tasik kesan corak-corak penyaliran camuk yang ditinggalkan dari Zaman Ais yang lalu. Semua tasik hanya wujud sementara sepanjang skala masa geologi, kerana lambat-laun tasik akan ditimbus mendapan atau tumpah keluar dari lembangan yang menakungnya.

^ Elya Nusantari (2010). "Kerusakan Danau Limboto dan Upaya Konservasi Melalui Pemberdayaan Masyarakat dan Peran Perguruan Tinggi". Jurnal Pendidikan Biologi. 1 (2): 1. ISSN 2085-6873.
^ Brittanica online. "Lake (physical feature)". Dicapai pada 2008-06-25. [a Lake is] any relatively large body of slowly moving or standing water that occupies an inland basin of appreciable size. Definitions that precisely distinguish lakes, ponds, swamps, and even rivers and other bodies of nonoceanic water are not well established. It may be said, however, that rivers and streams are relatively fast moving; marshes and swamps contain relatively large quantities of grasses, trees, or shrubs; and ponds are relatively small in comparison to lakes. Geologically defined, lakes are temporary bodies of water.
^ "a body of fresh or salt water of considerable size, surrounded by land". Dictionary.com. Dicapai pada 2008-06-25.

[1] Elya Nusantari (2010). "Kerusakan Danau Limboto dan Upaya Konservasi Melalui Pemberdayaan Masyarakat dan Peran Perguruan Tinggi". Jurnal Pendidikan Biologi. 1 (2): 1. ISSN 2085-6873.

[2] Brittanica online. "Lake (physical feature)". Dicapai pada 2008-06-25. [a Lake is] any relatively large body of slowly moving or standing water that occupies an inland basin of appreciable size. Definitions that precisely distinguish lakes, ponds, swamps, and even rivers and other bodies of nonoceanic water are not well established. It may be said, however, that rivers and streams are relatively fast moving; marshes and swamps contain relatively large quantities of grasses, trees, or shrubs; and ponds are relatively small in comparison to lakes. Geologically defined, lakes are temporary bodies of water.

[3] "a body of fresh or salt water of considerable size, surrounded by land". Dictionary.com. Dicapai pada 2008-06-25.

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