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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Ras Siyyan ： ウィキペディア英語版 Ras Siyyan Ras Siyyan or Ras Siyan ((アラビア語:رأس سيان)) is a peninsula in the Obock Region of Djibouti, on the Bab-el-Mandeb strait (between the Red Sea and the Gulf of Aden), about 20 km southwest of Perim Island. The peninsula consists of a reddish volcanic hill about 1.2 by 0.5 km and 138 m high,〔 ''(Sailing Directions (Enroute) - Red Sea and Persian Gulf ),'' page 161. National Geospatial Intelligence Agency pub. 172. Accessed 2012-07-6.〕 connected towards to the mainland by a low sandy strip that stretches south by about 5 km while widening from 500 to 800 m.〔William James Lloyd Wharton, John Phillips (1900), ''(The Red Sea and Gulf of Aden Pilot )'' page 230. Great Britain Hydrographic Offic.〕 The Ras Siyyan volcano is currently inactive but young, having erupted through a 21,000-year-old coral reef formation.〔 To the west of Ras Siyyan there is a shallow marshy bay or lagoon, about 2.5 km wide, protected on the north side by shallow coral banks. The bay is fringed with patches of mangrove bushes (''Avicennia marina''), in spite of the little input of freshwater. Abundant sea grasses (chiefly ''Halodule'' and ''Thalassia'' species) form large beds in the bay, and Sharks breed there in October.〔(2003-2004) ''Master Plan for the Isles des Sept Frères/Ras Siyyan and Godoria Marine Protected Area]''. (Draft, 2003-09 ); (Draft, 2004-05-21 ); . Regional Organization for the Conservation of the Environment of the Red Sea and Gulf of Aden (PERSGA)〕 An isolated white rock, Rocher Siyyan, lies in the bay about 800 m southwest of the volcanic hill. The hill of Ras Siyyan is sometimes considered the seventh of the Seven Brothers (Sawabi) islands; the other six lie from about 4.5 km to 14.5 km to the east. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ras Siyyan」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.