Subsidence

This resource includes lecture slides, a reading, and a set of questions related to the topic of land subsidence created by groundwater extraction. An answer key is also provided. At the end of the lecture and questions, students will understand that groundwater extraction causes subsidence, and subsidence is not reversible. They will learn that megacities built on coastal deltas are rapidly sinking, and subsidence far outpaces global sea level rise in these populous areas. The content is appropriate for general education or introductory classes. The reading and questions can be completed as a take-home assignment or as an in-class activity (flipped classroom model).

本资源包含与地下水提取导致的地面沉降主题相关的讲座幻灯片、阅读材料以及一系列问题。同时，亦提供了答案关键。在讲座及问题环节结束后，学生将认识到地下水提取会导致地面沉降，且地面沉降是不可逆的。他们将了解到建立在沿海三角洲上的超大城市正迅速下沉，而这些人口密集地区的地面沉降速度远超过全球海平面上升。该内容适合于通识教育或入门课程。阅读材料和问题可以作为家庭作业或课堂活动（翻转课堂模式）完成。