相关实验视频
Updated: Jun 7, 2025

12:44
Watershed Planning within a Quantitative Scenario Analysis Framework
Published on: July 24, 2016
8.0K
可扩展,数据同化模型预测大规模的海岸线对波浪和海平面上升的反应
Sean Vitousek1,2, Kilian Vos3, Kristen D Splinter3
1U.S. Geological Survey, Santa Cruz, USA. svitousek@usgs.gov.
Scientific reports
|November 14, 2024
概括
未来的海平面上升将大大增加沿海侵蚀. 一个新的模型显示,如果不进行干预,美国南大西洋海岸线的63-94%可能会在2100年之前退缩,影响沙.
科学领域:
- 沿海的地形形态.
- 气候变化影响气候变化的影响.
- 海平面上升研究研究
背景情况:
- 沿海变化是由复杂的,多层次的过程造成的,例如侵蚀和沉积物运输.
- 由于海平面上升而导致的历史沿海衰退往往比波浪驱动的变化慢.
- 未来海平面上升正在加速,增加沿海经济衰退的风险.
研究的目的:
- 开发和应用一个可扩展的,数据同化的海岸线变化模型.
- 模拟大型地区的长期沿海变化和不确定性.
- 预计到2100年美国南大西洋海岸的沿海变化.
主要方法:
- 利用历史的,来自卫星的海岸线位置数据.
- 整合了每天的后投和预测的波浪和海平面条件.
- 应用数据同化海岸线变化模型进行大规模,长期的模拟.
主要成果:
- 该模型实现了长期沿海变化和不确定性的现实模拟.
- 预计到2100年,美国63%至94%的南大西洋海岸线将退缩.
- 预计在没有干预的情况下,海平面上升1.0到2.0米以下的海平面上升.
结论:
- 可扩展,数据同化模型对于模拟长期沿海变化是有效的.
- 由于海平面上升,美国南大西洋海岸预计将出现显著的海岸线撤退.
- 迫切考虑沿海干预措施是必要的,以减轻未来的影响.
相关概念视频
Typical Model Studies
340
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
340
Design Example: Creating a Hydraulic Model of a Dam Spillway
127
Scaled hydraulic models of dam spillways provide a practical way to replicate and study the intricate flow dynamics of these structures. Often built to a 1:15 ratio, these models allow for observing critical water behavior, such as velocity distribution, flow patterns, and energy dissipation.
127
Modeling and Similitude
245
Scaled modeling is a fundamental technique in engineering, enabling the study of large and complex systems by creating smaller, manageable replicas that recreate critical characteristics of the original. In hydrology and civil infrastructure, for example, scaled models of dams help analyze water flow, turbulence, and pressure. This method allows for accurate predictions of real-world behavior within a controlled environment, significantly reducing the cost and time involved in full-scale...
245
Design Example: Analyzing Capacity Contours for Flood Risk Assessment
40
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
40
Responses to Drought and Flooding
10.6K
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.
10.6K
What is Climate?
18.4K
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.
18.4K

