截至本日11月jj出現的GWD及天山彙總

[sophiechen]

以下是我這幾天看CD及版上的彙總結果
不知會不會抄錯或漏掉，供大家參考
我現在感到有些麻煩的是
修辭有很多題是爭議題的樣子
我沒空去查CD裏面的帖子了


SC
GWD 1 30, 32
GWD 2
GWD 3 22, 29
GWD 4 4,13,17,19,41
GWD 5 10
GWD 6 17, 41
GWD 7 12, 20, 39
GWD 8 30
GWD 9 18
GWD 10
GWD 11 34
GWD 12
GWD 13
GWD 17 12
GWD 18
GWD 19
GWD 21 41
GWD 24 28
GWD 28 10
GWD 31 13
天山 3 30
天山 4
天山 7 39
天山 9 17

CR
GWD 1 14, 31
GWD 2 10, 21
GWD 3
GWD 4
GWD 5 19，26
GWD 6 28
GWD 7 14，28
GWD 8 22, 33, 38
GWD 9 40
GWD 10
GWD 11 13
GWD 12
GWD 13
GWD 17
GWD 18
GWD 19
GWD 21
GWD 24 14, 18, 24, 37
GWD 28 32
GWD 31
天山 3 32
天山 4
天山 7
天山 9 28

RC
GWD 1
GWD 2
GWD 3 passage 3
GWD 4
GWD 5 passage 3 (IT)，高頻jj)
GWD 6
GWD 7
GWD 8
GWD 9
GWD 10
GWD 11
GWD 12
GWD 13
GWD 17 passage 4 (月球引力)，高頻jj)
GWD 18
GWD 19
GWD 21
GWD 24 passage 1 (bioagent)，高頻jj)
GWD 28 passage 3
GWD 31
天山 3
天山 4
天山 7
天山 9 passage 4


我看了一下
閱讀最常出現的就是
一、白老虎
二、Sand Dune
三、致冷物質A對green house effect的影響
其他可能麻煩各位上CD RC jj看了

有新的話再上來改

Sand Dune (copy from CD)
There are 4 sections.
The first section: how did the sand dune be formed. The sand was blown by the wind and bounced when they stroke on hard thing (for example rock). If they met soft thing, they would piled gradually and formed a dune. When other sand passed by the top of the dune, the sand is easier to fall. So sand dune has been formed.

The second section: Why does the sand dune move? When the dune is huge enough (namely an angle of the slope face surpasses 30 degree), the sand on the top of slope will collapse. Then the entire sand dunes go forward along the collapsing direction.

The third section mentions an interesting phenomenon that the scientists resemble have not been able to explain--when the dune moved, it made a sound (Moaning). The faster it moves, the louder the sound. (A detail question is here). But some dune does not emit sound at all. Some dunes emits sound now and then (temperamental). (Another detail question, why the sand dune is said to be temperamental).

The fourth section: This kind of moaning has relationship with moisture, generally speaking, when moisture is very high, you cannot hear the dune moaning. But, the author has points out a counter-example, he said that in seashore, the moisture of the sand is high, but it still emits moaning. Why? The scientists explain that the facial interaction between the sand is determined by not only moisture but also the material of the sand. The main ingredient of common sand is quartz, but of seashore sand, is calcification.

[wanderlust]

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[hjp1077]

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