頁籤選單縮合
題 名 | 沉睡海底下的寶藏--「天然氣水合物」=The Treasure Beneath Seafloor--"Gas Hydrate" |
---|---|
作 者 | 陳松春; 許樹坤; 王詠絢; 鐘三雄; 陳柏淳; 楊燦堯; | 書刊名 | 前瞻科技與管理 |
卷 期 | 2:2 2012.11[民101.11] |
頁 次 | 頁107-134 |
分類號 | 457.8 |
關鍵詞 | 天然氣水合物; 可燃冰; 海底山崩; Gas hydrate; Combustible ice; Submarine landslide; |
語 文 | 中文(Chinese) |
中文摘要 | 天然氣水合物是甲烷氣和水組成的固態物質,因外觀看起來像冰塊,一般也稱為「可燃冰」。因為溫壓條件的關係,天然氣水合物廣泛分布在永凍原及大陸邊緣海域,其甲烷碳含量約為目前所有已知傳統化石能源(煤、石油、天然氣)所含碳總量的2倍。由於天然氣水合物具高密度、儲量大及潔淨等特性,是21世紀的新興能源,一旦成功開採利用,將是能源歷史之另一里程碑。然而,天然氣水合物的重要性,不只是能源資源特性,它還可能造成海底災害及影響全球氣候變遷;天然氣水合物會因溫壓條件改變而解離,在海床下方可能造成海底山崩及海嘯等地質災害,而甲烷氣是溫室氣體,如從海底釋放出來,會加劇全球暖化效應,影響全球氣候變遷。過去調查研究顯示台灣西南海域極可能蘊藏著大量的天然氣水合物,後續應積極進行更進一步之調查研究,以了解能源資源潛能及海床穩定性。 |
英文摘要 | Gas hydrate is a solid material composed of gas (mostly methane) and water molecules. It looks like ice, thus sometimes being called ”combustible ice.” Natural gas hydrates occur usually beneath the permafrost layer in the polar regions and also in marine sediments of the continental margins. The total amount of organic carbon in gas hydrates worldwide is estimated to be twice as much as the amount of organic carbon found in all known fossil fuels (petroleum, coal and natural gas) combined. Gas hydrate is considered as a new energy resource in the 21st century because of its characteristics of high energy density, huge amount of resources and relatively clean. Once gas hydrate successfully extracted and used, it will be a milestone of energy resource history. Actually, gas hydrates are important not only on their energy resource potential but also on their roles as submarine geohazards and their effects on global climate change. The stability of gas hydrates can be affected due to change of pressure and temperature conditions. Destabilized gas hydrates beneath the seafloor lead to geological hazards such as submarine landslide and tsunami, and may also affect climate due to the release of greenhouse gas methane to atmosphere, which may enhance global warming and climate change. Previous investigations have indicated that large amount of gas hydrate could be present beneath the seafloor offshore southwestern Taiwan, thus it is critical to conduct further investigate to understand its energy resource potentials and seafloor stabilities. |
本系統中英文摘要資訊取自各篇刊載內容。