曼谷附近的土地沉降:使用InSAR和机器学习的原因和长期趋势分析
Sakina Ahmed1, Yusuke Hiraga1, So Kazama1
1Department of Civil and Environmental Engineering, Tohoku University, Sendai, Japan.
The Science of the total environment
|June 28, 2024
概括
曼谷的土地沉降情况在周边省份恶化,尽管市内有改善. 使用InSAR和机器学习的未来预测显示,沉降率越来越高,取决于未来情景,趋势会有所不同.
科学领域:
- 地质科学 地质科学
- 环境科学 环境科学
- 遥感 遥感 遥感 遥感
背景情况:
- 曼谷的土地沉降是一个重大的环境挑战,需要长期的政策解决方案.
- 缓解努力已经减少了曼谷内部的沉降,但周边地区面临着不断升级的速度.
- 传统的监测方法覆盖范围有限,复杂的气候和社会经济因素影响沉降模式.
研究的目的:
- 预测未来在曼谷和周边省份近期,中期和远期的土地沉降情况.
- 利用先进的技术,如交叉测量合成孔径雷达 (InSAR) 和机器学习,进行准确的预测.
- 整合共享社会经济路径-代表性度路径 (SSP-RCPs) 来建模各种未来情景.
主要方法:
- 干涉测量合成孔径雷达 (InSAR) 用于土地沉降监测.
- 一个随机森林机器学习算法被用于预测建模.
- 综合SSP-RCPs场景被整合到预测不同未来条件下的沉降.
主要成果:
- 平均视线下沉速度为 -7.0毫米/年,在阿尤塔亚最高为 -53.5毫米/年.
- 开发的模型表现出高性能,R2值为0.84,并且没有过度装配.
- 近期 (2023-2048) 的预测表明,在所有情景中,沉降率的增加将超过每年 -9.0毫米.
结论:
- 未来沉降趋势在中远未来情景之间有很大差异.
- 一个"仅限城市土地使用变化"的情景表明,土地使用将逐渐恢复.
- 其他情景表明不同的沉降趋势,突出需要量身定制的政策干预.
关键词:
在曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷曼谷随机的森林 随机的森林一个SSP-RCP的场景.卫星监控 卫星监控 卫星监控在此之前,我一直在研究Subsidence.更多相关视频
相关概念视频
Types of Global Positioning System Surveys
54
GPS surveying methods vary in application, accuracy, and data collection techniques, catering to diverse surveying and mapping needs. Static GPS, kinematic GPS, and real-time kinematic (RTK) surveying are widely used. Each technique offers distinct advantages.Static GPS involves placing one receiver at a known reference point and another at the target point. It collects exact positional data by observing multiple satellite ranges over an extended period, achieving centimeter-level accuracy for...
54
Design Example: Maintaining Level of an Embankment
61
Constructing a roadway embankment over uneven terrain requires precise leveling to ensure stability and proper drainage. Surveyors use a leveling instrument and staff to calculate ground elevations and determine the required fill material at each point along the embankment alignment.The process begins by positioning a leveling instrument near a benchmark with a known elevation. A backsight reading establishes the instrument height, which serves as a reference for subsequent measurements. A...
61
Methods of Obtaining Topography
63
Topography involves measuring and mapping land elevations, natural features, and artificial structures to create accurate representations of the terrain. Topographic surveying relies on traditional and modern methods, each with distinct advantages and limitations.Traditional Surveying Methods:Transit stadia surveys and plane table surveys were widely used traditional surveying methods. These techniques relied on instruments like theodolites and stadia rods for measuring distances and angles,...
63
Manipulation and Analysis
23
GIS manipulation and analysis functions are vital for decision-making and planning. These activities range from data retrieval tasks, such as selecting information based on specific criteria, to advanced analytical techniques that address complex spatial problems.One critical GIS analysis method is overlaying, which combines multiple data layers to examine impacts. For example, overlaying a river-dammed lake boundary with road networks can identify affected infrastructure. Another common...
23
Influence of Earth's Curvature and Atmospheric Refraction on Leveling
91
During leveling, the Earth's curvature and atmospheric refraction introduce deviations in the line of sight from a true horizontal reference. When the line of sight is leveled, it remains perpendicular to the plumb line only at a single point. Beyond this, it deviates due to the Earth’s curvature, represented by the correction C. For a sight distance D, the deviation can be derived using the relationship:This relationship shows that the deviation increases quadratically with distance.
91
Introduction to Surveying, Plane Surveying and Geodetic Surveys
79
Surveying is the art and science of mapping the earth's surface. It involves measuring distances, angles in horizontal or vertical directions, and levels to understand the shape and size of land features. Surveying techniques are essential for various tasks, such as identifying the levels of a land area with reference to a specific point, and mapping undulations and water bodies.There are two main types of surveying: plane surveys and geodetic surveys. Plane surveys assume the earth is flat,...
79


