1900年至2017年美国东海岸海平面趋势的空间变化的起源
Christopher G Piecuch1, Peter Huybers2, Carling C Hay3
1Woods Hole Oceanographic Institution, Woods Hole, MA, USA. cpiecuch@whoi.edu.
Nature
|December 21, 2018
概括
地质过程,主要是过去冰河时代的地沉降,是美国东海岸相对海平面上升的主要驱动因素. 这些地质因素将继续影响海平面几个世纪.
科学领域:
- 地质学
- 海洋学
- 气候科学
背景情况:
- 美国东海岸的相对海平面趋势显示出显著的空间变化.
- 之前的研究将这些变化归因于冰川静态调整,冰/水再分配和海洋循环变化.
研究的目的:
- 确定控制1900-2017年美国东海岸相对海平面趋势的区域空间差异的主导因素.
- 评估垂直地运动与其他因素对观测到的海平面变化的贡献.
主要方法:
- 分析仪器和代理海平面数据.
- 应用概率方法来建模地运动和海平面趋势.
- 模型输出与观察数据的比较.
主要成果:
- 垂直地运动,特别是由于冰川前放松而导致的沿海沉降,是相对海平面趋势的主要控制因素.
- 在北卡罗来纳州,马里兰州和弗吉尼亚州附近观察到最强的沉降率,这表明石化层比以前的模型更厚.
- 海平面趋势的显著沿海梯度与降冰无关,表明了20世纪冰和水重新分配的贡献.
结论:
- 地质过程,特别是垂直的陆地运动,解释了美国东海岸相对海平面上升的大规模空间变化.
- 这些地质驱动因素预计将持续几个世纪,表明区域相对海平面趋势的长期稳定性.
- 这些发现提升了对地球岩层对降冰的反应的理解,并突出了地质因素对沿海海平面的持久影响.
相关概念视频
What is Variation?
18.4K
Apart from the measures of central tendency, distribution, outliers, and the changing characteristics of data with time, an important characteristic of any data set is its variation or spread. In some data sets, the data values are concentrated closely near the mean; in others, the data values are more widely spread out from the mean.
The range, standard deviation, standard error, and variance are the different measures of variation.
Range: The range is the difference between its maximum and...
The range, standard deviation, standard error, and variance are the different measures of variation.
Range: The range is the difference between its maximum and...
18.4K
Variation
8.0K
An important characteristic of any set of data is the variation in the data. In some data sets, the data values are concentrated closely near the mean; in other data sets, the data values are more widely spread out from the mean. The most common measure of variation, or spread, is the standard deviation, which is the square root of variance.
When independent and dependent variables are plotted on a scatter plot, the slope of a line is a value that describes the rate of change between the two...
When independent and dependent variables are plotted on a scatter plot, the slope of a line is a value that describes the rate of change between the two...
8.0K
Current Trends in Nursing I
5.5K
Current trends in nursing include:
5.5K
Current Trends in Nursing II
3.5K
Trends in nursing are multifactorial and associated with changes in society, within the nursing profession, and in other professions. Notably, telehealth and remote nursing contribute to successful healthcare delivery for numerous patients and help reduce stress for nurses due to nursing shortages. Nurses can reach patients, monitor their conditions, and interact with them using computers, audio, visual accessories, and telephones—for example, remote patient monitoring systems. Likewise,...
3.5K
Conservative Site-specific Recombination and Phase Variation
6.8K
Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
The recognition sites for Cre recombinase called LoxP...
The recognition sites for Cre recombinase called LoxP...
6.8K
Variation of Atmospheric Pressure
4.1K
Change in atmospheric pressure with height is particularly interesting. The decrease in atmospheric pressure with increasing altitude is due to the decreasing gravitational force per unit area as we move away from the surface of the earth.
Assuming the air temperature is constant at a given altitude and that the ideal gas law of thermodynamics describes the atmosphere to a good approximation, one can find the variation of atmospheric pressure with height.
Let p(y) be the atmospheric pressure at...
Assuming the air temperature is constant at a given altitude and that the ideal gas law of thermodynamics describes the atmosphere to a good approximation, one can find the variation of atmospheric pressure with height.
Let p(y) be the atmospheric pressure at...
4.1K


