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토플학원 어셔 학사일정
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작성일 : 07-05-25 02:41
토플배경지식 : 모래사구- linear dune
 글쓴이 : 9◎林 (222.♡.180.205)
조회 : 2,155   추천 : 0  

토플배경지식 : Origin

Linear dunes have formed in areas now characterized by wide ranges of wind speeds and directions.
Most are probably "fossil" dunes formed under more vigorous wind regimes during Pleistocene climatic conditions. Since then, wind regimes have apparently become less intense, although wind directions are apparently similar. Thus, where linear dunes are active today, they are commonly being modified into compound or complex features by the addition of secondary dunes.

오- 신기하다~~


주영 07-05-25 03:09
 58.♡.19.61  
  진짜 크다....1cm가 거의 2km네;;
 
 

Total 1,374
번호 제   목 글쓴이 날짜 조회 추천
9 토플배경지식 : 모래사구- linear dune (1) 9◎林 07-05-25 2156 0
8 토플배경지식 : 돼지코뱀~ (12) 박영조 07-05-24 3160 0
7 토플배경지식 : 양자역학세계의 스키어..,ㅡ,.ㅡ; (4) 박영조 07-05-18 2344 0
6 토플배경지식 : when is easter break? usher 07-03-25 2127 0
5 토플배경지식 : 독해반 어제 수업분중 falling cat에 관한 추가 (1) usher 07-02-09 2281 0
4 토플배경지식 : 독해반 수업분중 winterthur museum에 관하여... usher 07-02-09 2390 0
3 토플배경지식 : Ice storm death toll rises to 39 usher 07-01-16 3147 0
2 토플배경지식 : Castro in serious condition usher 07-01-16 2707 0
1 토플배경지식 : Scientists aim to save ‘EDGE’ species usher 07-01-16 4054 0
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