欢迎访问易文君范文网!

海水的盐度(The Salinity of Ocean Waters)

作文网 分享 时间: 加入收藏 我要投稿 点赞
0

海水的盐度(The Salinity of Ocean Waters)6hB易文君-文库范文网

  if the salinity of ocean waters is analyzed, it is found to vary only slightly from place to place. nevertheless, some of these small changes are important. there are three basic processes that cause a change in oceanic salinity.6hB易文君-文库范文网

  one of these is the subtraction of water from the ocean by means of evaporation--- conversion of liquid water to water vapor. in this manner the salinity is increased, since the salts stay behind. if this is carried to the extreme, of course, white crystals of salt would be left behind.6hB易文君-文库范文网

  the opposite of evaporation is precipitation, such as rain, by which water is added to the ocean. here the ocean is being diluted so that the salinity is decreased.6hB易文君-文库范文网

  this may occur in areas of high rainfall or in coastal regions where rivers flow into the ocean. thus salinity may be increased by the subtraction of water by evaporation, or decreased by the addition of fresh water by precipitation or runoff.6hB易文君-文库范文网

  normally, in tropical regions where the sun is very strong, the ocean salinity is somewhat higher than it is in other parts of the world where there is not as much evaporation.6hB易文君-文库范文网

  similarly, in coastal regions where rivers dilute the sea, salinity is somewhat lower than in other oceanic areas.6hB易文君-文库范文网

  a third process by which salinity may be altered is associated with the formation and melting of sea ice. when sea water is frozen, the dissolved materials are left behind. in this manner, sea water directly materials are left behind.6hB易文君-文库范文网

  in this manner, sea water directly beneath freshly formed sea ice has a higher salinity than it did before the ice appeared. of course, when this ice melts, it will tend to decrease the salinity of the surrounding water.6hB易文君-文库范文网

  in the weddell sea antarctica, the densest water in the oceans is formed as a result of this freezing process, which increases the salinity of cold water. this heavy water sinks and is found in the deeper portions of the oceans of the world.6hB易文君-文库范文网

84200
领取福利

微信扫码领取福利

微信扫码分享

月会员
每天0次下载
1元/30天
直接下载
单次下载
0元/次
微信支付
支付宝支付
欢迎使用微信支付
扫一扫支付
金额:
常见问题

请登录之后再下载!

下载中心

您的账号注册成功!密码为:123456,当前为默认信息,请及时修改

下载文件立即修改

帮助中心

如何获取自己的订单号?

打开微信,找到微信支付,找到自己的订单,就能看到自己的交易订单号了。

阅读并接受《用户协议》
注:各登录账户无关联!请仅用一种方式登录。


用户注册协议

一、 本网站运用开源的网站程序平台,通过国际互联网络等手段为会员或游客提供程序代码或者文章信息等服务。本网站有权在必要时修改服务条款,服务条款一旦发生变动,将会在重要页面上提示修改内容或通过其他形式告知会员。如果会员不同意所改动的内容,可以主动取消获得的网络服务。如果会员继续享用网络服务,则视为接受服务条款的变动。网站保留随时修改或中断服务而不需知照会员的权利。本站行使修改或中断服务的权利,不需对会员或第三方负责。

关闭