搜索结果: 16-30 共查到“国际动态 海洋科学”相关记录924条 . 查询时间(2.109 秒)
科学家首次实现定量测量全球海洋碳循环(图)
海洋 初级生产力 浮游植物 碳循环
2021/8/17
近日,在发表于《自然—地球科学》的一项新研究中,美国蒙特里海洋生物研究所高级科学家Ken Johnson和前MBARI博士后研究员Mariana Bif演示了机器人浮标舰队如何在全球范围内改变了人们对海洋初级生产力的理解。
海平面变化影响圣托里尼火山活动
海平面 火山 沉积物
2021/8/4
《自然—地球科学》2021年8月2日发表的一项研究指出,全球海平面间歇性降低影响了希腊圣托里尼火山在过去36万年里的喷发时间。研究表明,岩浆房会将岩浆注入喷发的火山,而岩浆房的活动和其他许多因素一样,会受到上覆材料向下压力的影响。减少或增加沉积物的侵蚀和构造过程可能会改变长时间内的喷发活动。
新型深海探测车将助力海底物质循环研究
深海探测车 海底物质
2021/5/20
这部由三个轴六个实心塑料轮、上方的矩形平台、有机玻璃管、电缆和各种传感器组成的探测车,来自于德国亥姆霍兹基尔海洋研究中心(GEOMAR Helmholtz Centre for Ocean Research Kiel))技术与物流中心,名叫PANTA RHEI。其外观与火星探测车的外观造型极为相似,但研发意义旨在探索深海探测,而非外部行星。2021年4月,在Eckernförde和Str...
神秘痕迹显示北极海绵正在移动(图)
神秘痕迹 北极海绵 正在移动
2021/4/28
海绵虽然是一种水生动物,但人们通常认为它们是完全固着的:一旦在一个地方定居并成熟,它们不会再移动。但是,4月26日发表在《当代生物学》上的一项新研究显示,情况并不总是如此。研究人员描述了横跨北极海底的浅棕色海绵针状神秘痕迹(海绵中的针状支撑物)。“我们观察到紧密交织的针状痕迹直接连接到海绵个体的下侧,表明这些痕迹是海绵的活动痕迹。”研究人员说,“这是首次在现场观察到大量的海绵移动痕迹。”该研究由德...
世界最大冰山融化解体 曾经覆盖约6000平方公里(图)
世界最大 冰山融化 解体 6000平方公里
2021/4/21
据英国广播公司报道,卫星图像显示,曾经世界上最大的冰山A68,融化分解成“无数小碎片”,实际上已经不复存在。A68在2017年从南极大陆分离出来时,覆盖了近6000平方公里的面积。
Flooding in Houston polluted reefs more than 100 miles offshore(图)
Flooding Houston polluted reefs 100 miles offshore
2021/4/23
Runoff from Houston's 2016 Tax Day flood and 2017's Hurricane Harvey flood carried human waste onto coral reefs more than 100 miles offshore in the Flower Garden Banks, according to U.S. National Scie...
Bacteria release more carbon from the ocean than previously thought(图)
Bacteria release carbon ocean previously thought
2021/4/23
A team led by University of Minnesota researchers has discovered that deep-sea bacteria dissolve carbon-containing rocks, releasing excess carbon into the ocean and atmosphere. The findings ...
Taking the vital signs of the global ocean with biogeochemical floats(图)
Taking vital signs global ocean biogeochemical floats
2021/4/16
As the researchers and crew aboard the research vessel Thomas G. Thompson continue to deploy biogeochemical floats in the western North Atlantic, the arrival of the first profile data marks ...
研究显示全球变暖迫使海洋生物“逃离”赤道
全球变暖 海洋生物 逃离赤道
2021/4/9
新西兰奥克兰大学牵头的一项新研究显示,全球变暖正迫使海洋生物改变地理分布,“逃离”赤道地区,向两极方向迁移。研究团队分析了20世纪50年代以来48661种海洋生物物种的分布数据,以评估气候变化对跨纬度物种多样性的影响。结果显示,赤道附近的海洋生物物种数量减少,而亚热带的物种数量却有所增加。这些物种包括生活在海底及海水中上层开阔水域的鱼类、软体动物和甲壳类动物。
U.S. East Coast sea level rise in 20th century fastest in 2,000 years(图)
U.S. East Coast sea level rise 20th century 2,000 years
2021/4/9
The rate of sea level rise in the 20th century along much of the U.S. Atlantic coast was the fastest in 2,000 years, and southern New Jersey had the fastest rates, according to a Rutgers Universi...
Changes in ocean chemistry show how sea level affects global carbon cycle(图)
ocean chemistry sea level global carbon cycle
2021/4/9
A new analysis of strontium isotopes in marine sediments has enabled scientists to reconstruct fluctuations in ocean chemistry reflecting changing climate conditions over the past 35 million years.The...
Researchers discover that 'cryptic species' respond differently to coral bleaching(图)
cryptic species respond differently coral bleaching
2021/4/9
Certain brightly colored coral species dotting the seafloor may appear indistinguishable to divers and snorkelers, but Florida State University researchers have found that these genetically ...
Engineering the Mississippi River has kept carbon out of the atmosphere,new study reveals(图)
Engineering Mississippi River kept carbon out atmosphere
2021/4/9
A new study co-authored by a Tulane University geoscientist shows that human efforts to tame the Mississippi River may have had an unintended positive effect: more rapid transport of carbon ...
'By-the-wind sailor' jellies wash ashore in massive numbers after warmer winters(图)
By-the-wind sailor jellies wash ashore massive numbers warmer winters
2021/4/9
As their name suggests, by-the-wind sailor jellyfish know how to catch a breeze. Using a stiff, translucent sail propped an inch above the surface of the ocean, these teacup-sized organisms skim along...