搜索结果: 1-15 共查到“the Earth”相关记录49条 . 查询时间(0.078 秒)
New modeling of nuclear device to deflect or destroy asteroids en route to Earth（图）
小行星 核装置 天体物理学
2024/2/1
The same high energy density that makes nuclear energy a clean and efficient source of power could make it a good alternative to defend the planet against catastrophic asteroid impacts. NASA demonstra...
Researchers create synthetic species without biochemistry, find they operate according to Darwinian evolutionary principles.
New research from Cornell and the Smithsonian Institution deepens the geological understanding of Earth’s continents by testing and ultimately eliminating a popular hypothesis about why continental an...
On the eve of Earth Day, Brown climate scientist outlines solutions for a warming world（图）
气候科学 全球变暖 气候变化
2023/6/26
Kim Cobb, a Brown University professor and director of the Institute at Brown for Environment and Society, spoke about the need to act on climate change, urging that action must be taken collaborative...
Can humans endure long-term living in deep space?The answer is a lukewarm maybe, according to a new theory describing the complexity of maintaining gravity and oxygen, obtaining water, developing agri...
A yearslong effort to launch Cornell-made satellite technology into a neighboring solar system is making a terrestrial stop at the Intrepid Sea, Air and Space Museum in New York City.
Partly melted rocks under Earth’s surface offer insights into what makes plate tectonics possible（图）
地球表面 板块构造 构造地质学
2023/6/26
Using seismic waves, scientists detect widespread partially molten rock hidden under the Earth’s tectonic plates in a new way, a step in settling a long-held geological debate that has big implication...
Moving water and earth（图）
颗粒形状 河流恢复 海岸侵蚀
2023/6/19
As a river cuts through a landscape, it can operate like a conveyer belt, moving truckloads of sediment over time. Knowing how quickly or slowly this sediment flows can help engineers plan for the dow...
浙江师范大学生命科学学院倪健课题组在Earth System Science Data上发表重要研究成果（图）
倪健 Earth System Science Data 青藏高原 生态系统
2023/12/27
新年伊始，生命科学学院倪健课题组在青藏高原第二次综合科学考察研究取得重要进展，相关成果以题为“TiP-Leaf: A dataset of leaf traits across vegetation types on the Tibetan Plateau”的数据论文发表在国际顶级期刊Earth System Science Data 2023年第1期。ESSD《地球系统科学数据》是当前地学和生态...
Mysteriously bright flash is a black hole jet pointing straight toward Earth, astronomers say（图）
黑洞生长 超大质量黑洞 兹威基瞬态设施 天文观测
2023/6/9
Earlier this year, astronomers were keeping tabs on data from the Zwicky Transient Facility, an all-sky survey based at the Palomar Observatory in California, when they detected an extraordinary flash...
New research analyzing pieces of the most ancient rocks on the planet adds some of the sharpest evidence yet that Earth’s crust was pushing and pulling in a manner similar to modern plate tectonics at...
中国科学院地理科学与资源研究所生态水文课题组在《ACS earth and space chemistry》揭示吞吐型湖泊水—气界面碳交换驱动机制（图）
生态水文课题组 《ACS earth and space chemistry》吞吐型湖泊 水—气界面碳交换
2023/1/11
湖泊代谢(metabolism)指湖泊生物不断进行的光合和呼吸作用，可通过湖泊总初级生产力（GPP）和湖泊总呼吸（RE）量化。水体二氧化碳分压（pCO2)指溶解在水中的二氧化碳（CO2）分子产生的压力，可用来量化量溶解在水中的二氧化碳的量。pCO2与其他参数，如 pH 值、溶解性无机碳和碱度一样，都用来描述水体的无机碳系统（CO2 (aq)、HCO3-、CO32-）的浓度和形态。湖泊pCO2不仅受...
When glacial ice sheets melt, something counterintuitive happens to sea levels. Logic might suggest that nearby levels would rise, but instead they fall.
Earth's Future：第三极融水主导流域未来径流呈现不同变化（图）
第三极融水 流域未来径流 不同变化
2023/1/16
第三极是地球上除了南极和北极之外冰川分布最多的地区（总面积约10万km2），随着气候快速变暖，冰川的加速消融引发了人们对下游农业、生态和社会供水的担忧。然而，冰川融水的重要性在第三极各个流域并不一致。第三极超过50%以上的冰川集中分布在西天山-帕米尔-喀剌昆仑-兴都库什-西喜马拉雅山。相较位于青藏高原东南部主要受季风影响的流域（如黄河源、澜沧江-湄公河上游等），冰雪融水对受西风主导且下游干旱的西部...
小麦是一种起源于温带的喜凉作物，是全球三大谷物之一，每年提供了全球人口20%的蛋白质和卡路里。目前气候变化的小麦影响评估研究主要集中于研究气候平均态的变化对小麦产量的影响和模型不确定性上。但产量仅是粮食安全问题的一个方面，国际农业贸易也是全球众多国家保持粮食供给的重要手段。因此粮食安全的其它维度（如，农产品价格、农业相关的社会经济与民生问题）同等重要，但相关研究非常有限。