珠江三角洲及其邻近的架子地下水系统的演变自代晚期以来
Chong Sheng1, Jiu Jimmy Jiao1,2,3, Jinpeng Zhang4
1Department of Earth Sciences, The University of Hong Kong, Hong Kong, China.
Science advances
|April 10, 2024
概括
在珍珠河三角洲内陆盐水和海上淡地下水共存. 古地质模型显示,这是由于地质时间的海水入侵和低淡水形成交替而发生的.
科学领域:
- 水文地质学 水文地质学
- 古气候学 古气候学
- 地质化学 地质化学
背景情况:
- 地下水系统通常假定陆上是淡水,海上是盐水.
- 这项研究调查了珍珠河三角洲含水层系统内陆盐水和新鲜的海上地下水的反直觉共存.
研究的目的:
- 探索内陆架设置中的地下水系统的形成机制和演变.
- 解决有关同一含水层内对比的地下水类型共存的知识差距.
主要方法:
- 进行了广泛的实地研究,以确定地下水的盐分分布.
- 复杂的古水文地质模型模拟地下水系统的演变.
- 分析古气候变化及其对地下水系统的影响.
主要成果:
- 在珍珠河三角洲,内陆盐水和海上新鲜地下水的共存.
- 在普莱斯托时代晚期发现的新鲜地下水形成在海上低.
- 通过全新世纪的过渡确定盐水地下水的形成古海水入侵内陆.
结论:
- 陆地和海上地下水系统在地质时间尺度上呈现交替变化.
- 地下水系统在响应古气候变化时呈现出歇斯底里,显著滞后.
- 古气候强迫对当今的地下水系统有剩余的影响.
更多相关视频
10:28Investigating the Relationship between Sea Surface Chlorophyll and Major Features of the South China Sea with Satellite Information
Published on: June 13, 2020
5.8K
07:53Bioindication Testing of Stream Environment Suitability for Young Freshwater Pearl Mussels Using In Situ Exposure Methods
Published on: September 5, 2018
7.3K
相关概念视频
02:35What is Evolutionary History?
36.4K
Scientists record evolutionary history by analyzing fossil, morphological, and genetic data. The fossil record documents the history of life on Earth and provides evidence for evolution. However, both fossil and living organisms offer evidence that outlines Earth’s evolutionary history.
36.4K
02:22The Colonization of Land
34.3K
Changes in the environment of the early Earth drove the evolution of organisms. As prokaryotic organisms in the oceans began to photosynthesize, they produced oxygen. Eventually, oxygen saturated the oceans and entered the air, resulting in an increase in atmospheric oxygen concentration, known as the oxygen revolution approximately 2.3 billion years ago. Therefore, organisms that could use oxygen for cellular respiration had an advantage. More than 1.5 years ago, eukaryotic cells and...
34.3K
02:56The Fossil Record
25.1K
The fossil record documents only a small fraction of all organisms that have ever inhabited Earth. Fossilization is a rare process, and most organisms never become fossils. Moreover, the fossil record only exhibits fossils that have been discovered. Nevertheless, sedimentary rock fossils of long-lived, abundant, hard-bodied organisms dominate the fossil record. These fossils offer valuable information, such as an organism's physical form, behavior, and age. Studying the fossil record helps...
25.1K
01:07Speciation Rates
21.2K
Overview
21.2K
01:06Primary Production
23.6K
The total amount of energy acquired by primary producers in an ecosystem is called gross primary production (GPP). However, of this energy, producers use some for metabolic processes, and some is lost as heat, decreasing the amount of energy available to the next trophic level. The remaining usable amount of energy is called the net primary productivity (NPP). In terrestrial ecosystems, NPP is driven by climate, while light penetration and nutrient availability drive NPP in aquatic ecosystems.
23.6K
02:41Responses to Drought and Flooding
10.7K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
10.7K