Detail Flood defences: Dambusterbusters   Oleh:  The Economist Jenis: Article from Bulletin/Magazine Dalam koleksi: The Economist (http://search.proquest.com/) vol. 394 no. 8663 (Jan. 2010), page 60. Topik: River; Flood; Portable Lightweight Ubiquitous Gasket (PLUG) Ketersediaan Perpustakaan Pusat (Semanggi) Nomor Panggil: EE29.58 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada     Lihat Detail Induk Isi artikel THE destruction of New Orleans by Hurricane Katrina in 2005 showed the importance of keeping levees—the artificial banks that contain the flow of partly canalised rivers—in tip-top condition. In practice, though, that is hard. Levees fail for many reasons, not all of them associated with violent storms, and there are so many of them (100,000 miles-worth in America alone) that keeping an eye on all of them is an almost impossible task. It is good, therefore, to have a backup plan to block up unexpected holes before they can cause too much damage. Opini Anda Klik untuk menuliskan opini Anda tentang koleksi ini! Kembali

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