新闻 > 国际
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000166/20170902/31263322.html
Server: cms-8-251
Date: 2024/12/31 05:42:05

Powered by China
China

升温导致世界最大湖泊水位连年下降

2017-09-02 14:46:01   新华网

新华社北京9月2日电 一个国际科研小组报告说,1996年至2015年间,世界最大湖泊——里海的水位以每年近7厘米的速度下降,主要原因是气温上升导致湖水蒸发速度加快。

里海是位于欧洲与亚洲之间的一个咸水湖,面积超过37万平方公里,是全球最大的内陆封闭水体。几百年来,里海水位曾多次大幅波动。

美国地球物理学联合会日前发布的一份新闻公报说,美国、俄罗斯、阿塞拜疆等国科学家组成的团队结合卫星和地面观测数据,分析了最近几十年里海水位的变化及其原因。

研究小组在新一期美国《地球物理通讯》杂志上报告说,里海水位在20世纪70年代末达到有记录以来最低点,随后持续上升,但在1996年转为下降,到2015年总共下降了约1.5米。目前里海水位约为海平面以下27.5米,仅比历史最低值高出1米多。

由于里海不与任何海洋相连,研究人员可以比较准确地估算其水量收支。分析显示,过去20年来的水位下降约有一半是蒸发速度加快导致,另一半由河流汇入里海的水量以及降雨量变化造成。

气温上升导致湖水蒸发速度加快。据统计,1996年至2015年间里海的年平均表面温度比1979年至2015年间的平均温度上升了约1摄氏度。

研究人员说,鉴于地球气候将持续变暖,预计里海水位会继续下降,不久就将重回历史最低水平。如果每年下降7厘米的趋势稳定持续下去,里海北部较浅区域将在约75年后消失。

404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000166/20170902/31263322.html
Server: cms-8-251
Date: 2024/12/31 05:42:05

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000166/20170902/31263322.html
Server: cms-8-251
Date: 2024/12/31 05:42:05

Powered by China
China

相关阅读

404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000166/20170902/31263322.html
Server: cms-8-251
Date: 2024/12/31 05:42:05

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000166/20170902/31263322.html
Server: cms-8-251
Date: 2024/12/31 05:42:05

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000166/20170902/31263322.html
Server: cms-8-251
Date: 2024/12/31 05:42:05

Powered by China
China
分享到:
0 0
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000166/20170902/31263322.html
Server: cms-8-251
Date: 2024/12/31 05:42:05

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000166/20170902/31263322.html
Server: cms-8-251
Date: 2024/12/31 05:42:05

Powered by China
China

美图推荐

404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000166/20170902/31263322.html
Server: cms-8-251
Date: 2024/12/31 05:42:05

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000166/20170902/31263322.html
Server: cms-8-251
Date: 2024/12/31 05:42:05

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000166/20170902/31263322.html
Server: cms-8-251
Date: 2024/12/31 05:42:05

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000166/20170902/31263322.html
Server: cms-8-251
Date: 2024/12/31 05:42:05

Powered by China
China

为您推荐

加载更多>>
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000166/20170902/31263322.html
Server: cms-8-251
Date: 2024/12/31 05:42:05

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000166/20170902/31263322.html
Server: cms-8-251
Date: 2024/12/31 05:42:05

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000166/20170902/31263322.html
Server: cms-8-251
Date: 2024/12/31 05:42:05

Powered by China
China