理学 >>> 数学 信息科学与系统科学 物理学 化学 天文学 地球科学总论 大气科学 地球物理学 地理学 地质学 水文学 海洋科学 生物学 科学技术史
搜索结果: 1-15 共查到理学 North相关记录671条 . 查询时间(0.125 秒)
Identifying and understanding functional process domains (sensu Montgomery, 1999) in rivers is paramount for linking the physical habitat template to ecosystem structure and function.
New research reveals significant changes in the circulation of the North Pacific Ocean and their impact on the initial migration of humans from Asia to North America.The U.S. National Science Fou...
Researchers at the University of Arkansas have established a link between climate patterns in the Amazon and large parts of North and South America using a newly developed tree-ring chronolo...
Contaminants that occur together naturally in groundwater under certain geological conditions may heighten health risks for millions of North Carolinians whose drinking water comes from private wells,...
A new study has found that the larvae of haddock, a commercially important type of cod, have a magnetic compass to find their way at sea. Haddock larvae orient toward the northwest using Earth's magne...
A historic 120-year-old data set is allowing researchers to confirm what data modeling systems have been predicting: climate change is increasing precipitation events like hurricanes, tropical storms ...
A new study by NSF-funded scientists at the Woods Hole Oceanographic Institution clarifies the influence of major currents in the North Atlantic Ocean on sea level along the coast of the northeastern ...
Most fishing communities from Maine to North Carolina are projected to face declining fishing options unless they adapt to climate change by catching different species or fishing in different areas, a...
Vast subtropical gyres -- large systems of rotating currents in the middle of the oceans -- cover 40% of the Earth. The gyres have long been considered biological deserts, with waters that contain ver...
Tropical and subtropical fish are taking up residence on shipwrecks and other sunken structures off the North Carolina coast. This pattern may continue or even accelerate in coming years given predict...
Evapotranspiration (ET) is an essential element of the hydrological cycle and plays a significant role in regional and global climate through the hydrological circulation. Estimation and monitoring of...
利用地层中包含的大量微体化石,结合沉积学分析,恢复了澳大利亚North Carnarvon盆地中生代的古气候与古环境,综合中生界优质烃源岩发育的古地理背景,探讨了其发育模式。研究结果表明,中生代不同层段微体化石属种及其相对含量的变化,对应于古气候与古环境的变迁;古气候呈干旱-湿润-干旱-湿润的旋回性变化;早三叠世-晚三叠世为水退过程,晚三叠世-晚白垩世整体为水进过程。中生界可识别出4个沉积相类型:...
The Shan 2 Member, Shan 1 Member and He 8 Member of the Mid–Late Permian Shanxi and lower Xiashihezi formations, in the southeastern Ordos Basin, together comprise ~150 m of deltaic deposits. This seq...
Across North America, streams and rivers are becoming saltier, thanks to road deicers, fertilizers and other salty compounds that humans indirectly release into waterways. At the same time, freshwater...
近日,中国地质大学资源学院和地质过程与矿产资源国家重点实验室李建威教授团队在国际地球化学顶级期刊发表题为《Hydrothermal reequilibration of igneous magnetite in altered granitic plutons and its implications formagnetite classification schemes: Insights fr...

中国研究生教育排行榜-

正在加载...

中国学术期刊排行榜-

正在加载...

世界大学科研机构排行榜-

正在加载...

中国大学排行榜-

正在加载...

人 物-

正在加载...

课 件-

正在加载...

视听资料-

正在加载...

研招资料 -

正在加载...

知识要闻-

正在加载...

国际动态-

正在加载...

会议中心-

正在加载...

学术指南-

正在加载...

学术站点-

正在加载...