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相关概念视频

Global Climate Change01:50

Global Climate Change

24.4K
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.
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Audible changes in marine trophic ecology: Baleen whale song tracks foraging conditions in the eastern North Pacific.

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相关实验视频

Updated: Jul 1, 2025

Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats
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Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats

Published on: October 26, 2019

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通过使用冷音机的被动海冰厚度推断.

D Benjamin Reeder1, John E Joseph1, S Kyle Wheeler1

  • 1Department of Oceanography, Naval Postgraduate School, 1 University Circle, Monterey, California 93943, USAdbreeder@nps.edu, jejoseph@nps.edu, stephen.wheeler@nps.edu.

JASA express letters
|March 5, 2024
PubMed
概括

研究人员使用被动声学方法监测北极海冰,以测量波浪共振. 该技术成功推断了海冰厚度,显示了远程和自主海冰监测的潜力.

科学领域:

  • 地质物理学 地质物理学
  • 海洋学 海洋学 海洋学
  • 材料科学 材料科学 材料科学

背景情况:

  • 北极海冰的机械性质对于了解其行为至关重要.
  • 以前推断冰的特性方法依赖于主动信号生成和波速测量.

研究的目的:

  • 评估使用被动声学观测来监测北极海冰的可行性.
  • 使用压缩波共振推断海冰厚度.

主要方法:

  • 利用被动冷声观测来检测海冰中自然发生的压缩波共振.
  • 分析了ICEX20和ARCEX23现场活动期间的波浪共振.

主要成果:

  • 成功推断出第一年的平均冰厚为1.3米 (ICEX20) 和1.6米 (ARCEX23).
  • 结果与独立的海冰厚度观测结果一致.

结论:

  • 对海冰共振的被动声学监测是一种推断冰厚的可行方法.
  • 这种方法表明了远程和自主监测北极海冰状况的潜力.

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