求助36套29的第10题

sirjasonUID: 3489676

It has long been known that during an El Nino, two conditions exist: (1) unusually warm water extends along the eastern Pacific, principally along the coasts of Ecuador and Peru, and (2) winds blow from the west into the warmer air rising over the warm water in the east. These winds tend to create a feedback mechanism by driving the warmer surface water into a "pile" that blocks the normal upwelling of deeper, cold water in the east and further warms the eastern water, thus strengthening the wind still more. The contribution of the recent model is to show that the winds of an El Nino, which raise sea level in the cast, simultaneously send a signal to the west lowering sea level. According to the model, that signal is generated as a negative Rossby wave, a wave of depressed, or negative, sea level, that moves westward parallel to the equator at 25 to 85 kilometers per day. Taking months to traverse the Pacific, Rossby waves march to the western boundary of the Pacific basin, which is modeled as a smooth wall but in reality consists of quite irregular island chains, such as the Philippines and Indonesia.

10. Which of the following, if true, would most seriously undermine the validity of the model of El Nino that is presented in the passage?
(A) During some years El Nino extends significantly farther along the coasts of Ecuador and Peru than during other years.
(B) During periods of unusually cool temperatures along the eastern Pacific, an El Nino is much colder than normal.
(C) The normal upwelling of cold water in the eastern Pacific depends much more on the local characteristics of the ocean than on atmospheric conditions.
(D) The variations in the time it takes Rossby waves to cross the Pacific depend on the power of the winds that the waves encounter.
(E) The western boundary of the Pacific basin is so irregular that it impedes most coastal Kelvin waves from heading eastward.
答案是E,看了解析，还是不懂，我咋觉得C特别正确呢？
文中没有提到Kelvin waves以及它向东回流啊？
相反C，说是当地ocean造成而不是厄尔尼诺风(atmospheric conditions)造成的，不是正好weaken了吗？
请大神们赐教!
最近被36虐的好苦啊，这么多年的英语感觉轰然倒塌，还想求安慰。。。:mad

crazyrobinUID: 2368627

这个model是 风让东海岸海平面上升，同时导致R什么的wave向西移动。

你的C normal upwelling是由哪个因素决定的并不能说明这个model就不对啊。即便是local ocean又怎么样。 wind作为一个contribution factor还是有影响的。

E这里直接攻击了第二点 block upwelling deeper water哪里。


另外这是截取片段，请阅读全文

sirjasonUID: 3489676

crazyrobin 发表于 2014-5-23 20:44
这个model是 风让东海岸海平面上升，同时导致R什么的wave向西移动。

你的C normal upwelling是由哪个因素 ...

谢谢大神 我明白C为什么错了。。。新36里只给了这一段 木有全文。。