來吊個書袋
V-shaped valley: A valley having a pronounced cross profile suggesting the
form of the letter "V", characterized by steep sides and
short turbutaries; specif. a young, narrow valley resulting
from downcutting by a stream. The "V" becomes broader as the
amount of mass wasting increases.
U-shaped valley: A valley having a pronounced parabolic cross profile
suggesting the form of a broad letter "U", with steep wall
and a broad nearly flat floor; specif. a valley carved by
glacial erosion, such as a glacial trough.
Ref: glossary of geology, 4th edtion.
結論: 是的 的確似乎沒有很嚴謹的width/depth這種可能的數值化定義
但如此係用floor的narrow和broad做討論的話 結果應該其實還算明顯
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V-shaped valley: A valley having a pronounced cross profile suggesting the
form of the letter "V", characterized by steep sides and
short turbutaries; specif. a young, narrow valley resulting
from downcutting by a stream. The "V" becomes broader as the
amount of mass wasting increases.
U-shaped valley: A valley having a pronounced parabolic cross profile
suggesting the form of a broad letter "U", with steep wall
and a broad nearly flat floor; specif. a valley carved by
glacial erosion, such as a glacial trough.
Ref: glossary of geology, 4th edtion.
結論: 是的 的確似乎沒有很嚴謹的width/depth這種可能的數值化定義
但如此係用floor的narrow和broad做討論的話 結果應該其實還算明顯
--
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