搜索结果: 136-150 共查到“理学 Ice”相关记录506条 . 查询时间(0.078 秒)
Researchers crack the ice to study the Arctic marine food web
Arctic marine food web ice
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2014/12/1
Local climatic changes impact algae living inside the sea ice, which may drastically affect near shore Arctic marine food webs
Scientists traveled to a town near the top of the world to study a creat...
They know the drill: UW leads the league in boring through ice sheets（图）
ice sheets The university of Wisconsin Antarctica
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2014/12/3
Wisconsin is famous for its ice fishers — the stalwarts who drill holes through lake ice in the hope of catching a winter dinner. Less well known are the state’s big-league ice drillers — specialists ...
Highest altitude ice age human occupation documented in Peruvian Andes（图）
human occupation Peruvian Andes
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2014/12/1
the southern Peruvian Andes, an archaeological team led by researchers at the University of Maine has documented the highest altitude ice age human occupation anywhere in the world — nearly 4,500 mete...
Diatoms as Recorders of Sea Ice in the Bering and Chukchi Seas: Proxy Development and Application
Bering Sea Diatoms IP25 Marine Isotope Stage 11 Pacific Decadal Oscillation Sea Ice
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2014/10/22
The recent, rapid decline in Arctic summer sea ice extent has prompted questions as to the rates and magnitude of previous sea ice decline and the affect of this physical change on icerelated ecosyste...
IP25: A Molecular Proxy of Sea-ice Duration in the Bering and Chukchi Seas
IP25 A Molecular Proxy Sea-ice Duration Bering Chukchi Seas
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2014/10/21
Seasonal sea ice is an important component of the global climate system. Sea ice influences exchange rates of heat, moisture, and gas between the ocean and atmosphere. Sea ice also plays critical role...
Identifying variable sea ice carbon contributions to the Arctic ecosystem: A case study using highly branched isoprenoid lipid biomarkers in Cumberland Sound ringed seals
Sea ice carbon The arctic ecosystem
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2014/10/16
We analyzed liver samples from 322 ringed seals (Pusa hispida) collected from Cumberland Sound (southeast
Baffin Island) to test our ability to differentiate between carbon sources in near apex preda...
A regime shift in Lake Superior ice cover, evaporation, and water temperature following the warm El Niño winter of 1997–1998
Lake Superior ice cover evaporation water temperature following the warm El Nino winter
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2014/10/16
Significant trends in Lake Superior water temperature and ice cover have been observed in recent decades, and these trends have typically been analyzed using standard linear regression techniques. Alt...
Study resolves discrepancy in Greenland temperatures during end of last ice age（图）
Greenland temperatures ice cores
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2014/9/12
CORVALLIS, Ore. – A new study of three ice cores from Greenland documents the warming of the large ice sheet at the end of the last ice age – resolving a long-standing paradox over when that warming o...
TWP-ICE试验期间一次热带深对流过程的拉格朗日输送特征
热带深对流 卷云砧 水凝物输送 拉格朗日轨迹 FLEXPART扩散模式
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2014/9/26
本文使用高分辨率WRFV3.4.1模式对TWP-ICE试验期间的一次热带深对流过程进行了数值模拟，利用第四重嵌套每五分钟输出一次的模拟资料对对流系统的上升气流质量通量廓线特征进行了分析，并结合FLEXPART拉格朗日粒子扩散模式对热带深对流系统进行拉格朗日轨迹分析.质量通量廓线特征及拉格朗日轨迹的分析结果表明，在条件不稳定层顶附近便有部分水凝物被输送出深对流系统.深对流系统中的水凝物主要沿环境引导...
Confirmed: 800 meters beneath Antarctic ice sheet, subglacial lake holds viable microbial ecosystems（图）
The microbial ecosystem ice sheet
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2014/8/26
B-roll from the WISSARD project is available by contacting Dena Headlee, dheadlee@nsf.gov / (703) 292-7739.
In a finding that has implications for life in other extreme environments, both on Earth an...
Antarctic ice sheet is result of CO2 decrease, not continental breakup
Antarctic ice sheet result of CO2 decrease not continental breakup
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2014/8/14
Climate modelers from the University of New Hampshire have shown that the most likely explanation for the initiation of Antarctic glaciation during a major climate shift 34 million years ago was decre...
Synchronization of North Atlantic, North Pacific preceded abrupt warming, end of ice age
Synchronization of North Atlantic North Pacific preceded abrupt warming end of ice age
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2014/8/14
Scientists have long been concerned that global warming may push Earth’s climate system across a “tipping point,” where rapid melting of ice and further warming may become irreversible – a hotly debat...
Biological- and physical-induced oxygen dynamics in melting sea ice of the Fram Strait
Biological- and physical-induced oxygen dynamics melting sea ice Fram Strait
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2014/7/10
We investigated the production, consumption, and exchange of O2 in melting sea ice to assess the biological- and physical-induced O2 turnover. The underside of the ice was covered with 5–20 cm3 large,...
Rewriting the history of volcanic forcing during the past 2000 years A year-by-year record of volcanic eruptions from a comprehensive Antarctic ice core array（图）
The desert The South Pole. The volcano. Climate change Sulfur dioxide Sulfate Ice cores
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2014/7/18
RENO – A team of scientists led by Michael Sigl and Joe McConnell of Nevada’s Desert Research Institute (DRI) have completed the most accurate and precise reconstruction to date of historic volcanic s...
Feeding and overwintering of Antarctic krill across its major habitats: The role of sea ice cover, water depth, and phytoplankton abundance
Antarctic krill Feeding water depth
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2014/4/2
Antarctic krill (Euphausia superba) were sampled in contrasting habitats: a seasonally ice-covered deep ocean
(Lazarev Sea), ice-free shelves at their northern range (South Georgia) and the Antarctic...