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Updated: Jun 27, 2026

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Resurrection of Dormant Daphnia magna: Protocol and Applications
Published on: January 19, 2018
大西洋の転覆は,プレイストセンの末期に起きた気候変動への反応を促した
Lorraine E Lisiecki1, Maureen E Raymo, William B Curry
1Department of Earth Sciences, Boston University, 675 Commonwealth Avenue, Boston, Massachusetts 02215, USA. lisiecki@alumni.brown.edu
Nature
|November 7, 2008
まとめ
氷河期における海洋循環の変化は複雑である. 新しい研究によると,大西洋の転覆は,ミランコビッチ強制を超えた複数の要因に敏感であり,気候モデルに影響を及ぼします.
科学分野:
- パレオセアノグラフィー
- 気候科学 気候科学
- 海洋学 海洋学とは
背景:
- SPECMAPプロジェクトでは,高緯度の夏の太陽照射 (ミランコビッチ強制) が,海洋循環と軌道サイクル全体にわたる気候反応を推進するという仮説を立てました.
- 軌道強制への海洋循環反応の以前の分析は,いくつかの大西洋地域に限られており,場所固有の相変化を完全に捉えることができませんでした.
関連する概念動画
What is Climate?
Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water.
Global Climate Change
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
Speciation Rates
Speciation can proceed at markedly different rates, and evolutionary biologists commonly describe these differences through the models of gradualism and punctuated equilibrium. Both patterns explain how new species arise, but they differ in the tempo and continuity of evolutionary change. In both cases, evolutionary change arises from heritable variation within populations, with natural selection often shaping traits that improve survival and reproduction under specific environmental conditions.
Isothermal Processes
A thermodynamic process that occurs at constant temperature is called an isothermal process. Heat slowly flows into the system or out of the system to maintain thermal equilibrium. Processes involving phase changes like water evaporation into steam or freezing water into ice at a constant temperature are examples of Isothermal Processes.
An ideal gas can also undergo isothermal expansion or compression.
For example, consider 1 mole of an ideal gas inside an isolated cylinder at initial volume V...
An ideal gas can also undergo isothermal expansion or compression.
For example, consider 1 mole of an ideal gas inside an isolated cylinder at initial volume V...
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Microorganisms are pivotal agents in Earth's biogeochemical cycles, significantly influencing climate dynamics through their metabolic activities. These microbes modulate the levels of key greenhouse gases by both contributing to and helping mitigate climate change.Microbial Contributions to Greenhouse Gas EmissionsRising global temperatures accelerate microbial metabolism, which, in turn, speeds up the decomposition of organic matter. This process releases carbon dioxide (CO₂) through...

