相关实验视频
Updated: Feb 7, 2026

06:10
Using Generative Art to Convey Past and Future Climate Transitions
Published on: March 31, 2023
1.5K
作者纠正:选择南极洲的未来
S R Rintoul1,2,3, S L Chown4, R M DeConto5
1CSIRO Oceans & Atmosphere, Hobart, Tasmania, Australia. Steve.Rintoul@csiro.au.
Nature
|July 19, 2018
概括
海洋酸化正在增加南极地表水中的离子度. 这项研究证实,到2070年,海洋生态系统的酸度预计会增加50%.
科学领域:
- 环境科学
- 海洋学
- 气候变化研究
背景情况:
- 在南极60度以南的地表水域正在经历重大化学变化.
- 海洋酸化是全球海洋生态系统日益关注的问题.
研究的目的:
- 量化南极表面水中的pH和离子度的预测变化.
- 评估这些变化对海洋环境的影响.
主要方法:
- 分析60°南的地表水的pH值数据.
- 基于pH变化的离子度变化的计算.
- 预测2017年至2070年的未来变化
主要成果:
- 预计2017年至2070年间,南南60度的地表水的pH值将降低0.2个单位.
- 这种pH变化相当于自工业化前以来离子度增加了50%.
- 这些发现凸显了南极地区海洋酸化的显著趋势.
结论:
- 南极的表面水正在以加速的速度酸化.
- 预计离子的增加对海洋生物构成重大威胁.
- 迫切需要采取气候行动来缓解海洋进一步酸化.
相关概念视频
Milgram's Obedience to Authority
7.4K
Obedience to authority is classically demonstrated in a more famous series of social psychology experiments performed by Stanley Milgram. He was a social psychology professor at Yale who was influenced by the trial of Adolf Eichmann, a Nazi war criminal. Eichmann’s defense for the atrocities he committed was that he was “just following orders.”
7.4K
Choosing Between z and t Distribution
3.7K
The z and the Student t distribution estimate the population mean using the sample mean and standard deviation. However, to decide which distribution to use for a calculation, one needs to determine the sample size, the nature of the distribution, and whether the population standard deviation is known. If the population standard deviation is known and the population is normally distributed, or if the sample size is greater than 30, the z distribution is preferred. The Student t distribution is...
3.7K
Distance Corrections
297
To achieve precise distance measurements, especially in surveying and construction, certain corrections must be applied to account for potential sources of error like the standardization errors, temperature variations, and slope adjustments.Standardization error emerges when measurement equipment undergoes changes, such as wear, repairs, or weather impacts. To address this, surveyors compare the equipment’s readings to a standard. This process identifies any deviation that might lead to...
297
Power Factor Correction
545
The power transmission to a factory involves the transfer of apparent power, a combination of active and reactive power. The power factor measures how effectively electrical power is converted into useful work output. The ratio of the real power (KW) that does the work to the apparent power (KVA) supplied to the circuit.
545
NMR Spectrometers: Resolution and Error Correction
1.1K
When magnetic nuclei in a sample achieve resonance and undergo relaxation, the signal detected in NMR is an approximately exponential free induction decay. Fourier transform of an exponential decay yields a Lorentzian peak in the frequency domain. Lorentzian peaks in an NMR spectrum are defined by their amplitude, full width at half maximum, and position, where the peak width is governed by the spin-spin relaxation time alone. In real experiments, however, the applied magnetic field is rendered...
1.1K
Osmoregulation in Insects
17.6K
Malpighian tubules are specialized structures found in the digestive systems of many arthropods, including most insects, that handle excretion and osmoregulation. The tubules are typically arranged in pairs and have a convoluted structure that increases their surface area.
17.6K

