搜索结果: 46-60 共查到“国际动态 水文学”相关记录100条 . 查询时间(0.28 秒)
North America's freshwater lakes are getting saltier
North America freshwater lakes getting saltier
2017/4/27
North America's freshwater lakes are getting saltier due to development and exposure to road salt. A study of 371 lakes published today in the Proceedings of the National Academy of Sciences reports t...
Critical Zone Observatories help U.S. plan for the future
Critical Zone Observatories U.S. plan
2016/3/28
From treetops to rivers to the bedrock below, there is constant activity going on in what we can think of as the "skin" of our planet. It's called the critical zone, the active layer of the Earth wher...
This publication aims to fulfil the objective of FIG Commission 4’s Working Group 4.4, to develop an awareness of hydrographic surveying and raise its profile in terms of how it can benefit society, c...
More than a quarter of the rain and snow that falls on continents reaches the oceans as runoff. Where does the rest go?Now results of a new study help answer that question: two-thirds of the remaining...
鄱阳湖的复杂水文节律研究取得新进展（图）
鄱阳湖 复杂水文节律
2015/3/6
鄱阳湖是中国第一大淡水湖，同时也是国际重要湿地，夏季高水似湖，冬季低水似河，具有独特的水位波动和水面变化过程，在涵养水源、调蓄水量、维持生物多样性等方面发挥着重要作用。受流域“五河”来水及长江顶托作用的复合影响，不同时期鄱阳湖的水域分布差异显著，尤其是近十年来干旱频发，湖泊水域的时空分布更趋复杂。因此，准确地认识和全面地把握鄱阳湖的复杂水文节律，是当前进行湖泊管理与实践的重要科学前提。
Unmanned underwater vehicle provides first 3-D images of underside of Antarctic sea ice（图）
Antarctic sea ice 3-D images
2014/12/1
A video news release and b-roll are available by contacting Dena Headlee, (703) 292-7739 / dheadlee@nsf.gov
A National Science Foundation (NSF)-funded research team has successfully tested an autonom...
Trying to sell or buy water rights can be a complicated exercise. First, it takes time and effort for buyers and sellers to find each other, a process that often relies on word-of-mouth, local bulleti...
BOULDER — Groundbreaking work by a group of Boulder scientists has been recognized this month with one of the world’s most prestigious awards for innovations related to water resources.
Hydrologists find Mississippi River network's buffering system for nitrates is overwhelmed
Hydrologists find Mississippi River network's buffering system nitrates is overwhelmed
2014/6/12
AUSTIN, Texas — A new method of measuring the interaction of surface water and groundwater along the length of the Mississippi River network adds fresh evidence that the network’s natural ability to c...
Rivers are an important part of our everyday lives. They provide water for drinking and irrigation and transport for trade and travel. They are used to generate electric power for energy and act as ha...
Although liquid water covers a majority of Earth's surface, scientists are still searching for planets outside our solar system that contain water. California Institute of Technology researchers have ...
俄罗斯与德国在雅库特联合科考取得新进展
俄罗斯 德国 雅库特联合科考 新进展
2013/6/14
俄东北联邦大学宣布，俄德两国“雅库特-2013”联合科考活动取得新进展。围绕当地最深的大托克湖，双方专家已顺利完成全部考察课题目，并提取到具有重要科研价值的标本材料。
2013年3月11日，俄罗斯科考队经过周密准备，成功从南极“东方”冰下湖采集到第一份水样，同时还发现新的细菌品种。科考队采用直径135毫米的钻头从冰下湖表层采集水样，钻头在从湖底升起过程中形成“速冻冰芯”，温度的变化从零下120摄氏度（深度3300米）到零下30摄氏度（深度500米）。按原计划，科考队在2012至2013年度要完成深度3406米至3460米的钻探作业，其中就包括采集“速冻水”样品的...
美国宇航局研制新型月球车搜寻极地水资源（图）
月球勘测轨道 美国 月球
2013/4/18
北京时间2013年18日消息，据美国国家广播公司网站(NBC)报道，美国宇航局正致力于研发一种新型月球车，用于在月球南极地区搜寻并分析这里的水冰物质，并展示如何在月球上就地生产液态水的方式。这一名为“风化层和环境科学以及氧气和月面挥发分提取”(RESOLVE)的项目计划将于2017年11月发射升空，预计将用一周的时间达成其预定目标。