Excellence in Research: Identification of absolute sea level rise and land subsidence from long-term tide gauge records along coasts of the Gulf of Mexico and the Chesapeake Bay

卓越的研究：从墨西哥湾和切萨皮克湾沿岸的长期验潮记录中识别绝对海平面上升和地面沉降

• 批准号: 2101056
• 负责人: Yi Liu
• 金额: $ 54.96万
• 依托单位: Morgan State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-07-01 至 2025-06-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2101056&HistoricalAwards=false
• 关键词: Excellence; Research; Identification; absolute; sea

Global warming causes worldwide sea level rising due to a combination of meltwater from glaciers and ice sheets and expansion of ocean water. As a result, flood risk and ecosystem change are elevated in the Gulf of Mexico and the Chesapeake Bay, two of the globe’s hot spots, where the sea level rise is about two to four times greater than global mean sea level rise. The sustainability and resiliency of the nation’s coastal communities to evolving needs of the environments in response to past and future sea level rise necessitates identification of it from long-term tide gauge records along the nation’s coasts. This research will develop an innovative methodology to accurately identify and predict sea level rise along any coasts. The proposed research activities will impart an improved understanding of sea level rise and its adverse impacts on coastal communities, which thereby inspires scientists and engineers to face various environmental challenges caused by sea level rise. In order to disseminate new knowledge and research findings, the program plans to deliver lectures or talks with research results to K-12 students, college students in three undergraduate courses, and graduate students in four graduate courses in Civil Engineering at Morgan State University. One postdoctoral researcher and one graduate student will be hired each year to participate in the proposed research activities.Gauged sea level rise comprises of absolute sea level rise, in light of the Earth’s climate system change, and land subsidence, due to the Earth’s geological system change. The latter change includes four sub-components: tectonic subsidence from basement rocks, basement rock creep, primary consolidation subsidence due to subsurface fluid withdrawal from compressible coastal aquifer systems and creep subsidence due to geohistorical overburden pressure of the same aquifer system. A novel piecewise equation of relative sea level rise comprising of absolute sea level rise and four sub-components of land subsidence can help scientists and engineers identify and project relative sea level rise value for adaptive engineering design and construction necessary with a view to increase the resilience of coastal communities against sea level rise as well as other natural hazards. To these ends, this project aims to raise public awareness of the importance of sea level rise in environmental sustainability and coastal community resilience in the coastal areas of the Mexico Gulf and the Chesapeake Bay and promote science, technology, engineering and mathematics (STEM) education for underrepresented minorities. This project is co-funded by the Geomorphology and Land-use Dynamics (GLD) Program and the Historically Black Colleges and Universities - Excellence in Research (HBCU-EiR) Program, along with support from Integrative and Collaborative Education and Research (ICER) funds of the NSF Geosciences Directorate.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

全球变暖导致全球海平面上升，这是由于冰川和冰盖融水以及海水膨胀的结合。因此，在墨西哥湾和切萨皮克湾这两个地球仪的热点地区，洪水风险和生态系统变化都有所增加，这两个地区的海平面上升幅度约为全球平均海平面上升幅度的2至4倍。为了应对过去和未来的海平面上升，国家沿海社区对环境不断变化的需求的可持续性和弹性需要从国家沿海沿着的长期验潮记录中加以识别。这项研究将开发一种创新的方法，以准确地识别和预测海平面上升沿沿着任何海岸。拟议的研究活动将使人们更好地了解海平面上升及其对沿海社区的不利影响，从而激励科学家和工程师应对海平面上升造成的各种环境挑战。为了传播新的知识和研究成果，该计划计划提供讲座或会谈的研究成果，以K-12学生，大学生在3个本科课程，研究生在4个研究生课程的土木工程在摩根州立大学。每年将聘请一名博士后研究员和一名研究生参与拟议的研究活动。海平面上升包括由于地球气候系统变化引起的绝对海平面上升和由于地球地质系统变化引起的地面沉降。后者的变化包括四个子组成部分：构造沉降从基底岩石，基底岩石蠕变，主固结沉降由于地下流体从可压缩的沿海含水层系统和蠕变沉降由于地质历史上覆压力的同一含水层系统。一种新的分段相对海平面上升方程，包括绝对海平面上升和地面沉降的四个子分量，可以帮助科学家和工程师确定和预测相对海平面上升值，以适应工程设计和建设，以提高沿海社区对海平面上升以及其他自然灾害的恢复力。为此，该项目旨在提高公众对海平面上升对墨西哥湾和切萨皮克湾沿海地区环境可持续性和沿海社区复原力的重要性的认识，并促进对代表性不足的少数群体的科学、技术、工程和数学教育。该项目由地貌和土地利用动态（GLD）计划和历史上的黑人学院和大学共同资助-卓越研究（HBCU-EiR）计划，沿着来自综合与合作教育和研究（ICER）的支持该奖项反映了NSF的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准。

项目成果

Land Subsidence Due to Creep of the Gulf Coast Aquifer System in the Houston-Galveston Region

• DOI: 10.2113/eeg-d-21-00076
• 发表时间: 2022-08
• 期刊: Environmental & Engineering Geoscience
• 作者: Yi Liu;Jiang Li