EAPSI: Understanding water availability through the modeling of groundwater flow and temperature of the Heihe River in China

EAPSI：通过中国黑河地下水流量和温度建模了解水资源可用性

• 批准号: 1414634
• 负责人: Sarah Evans
• 金额: $ 0.51万
• 依托单位: Evans Sarah G
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-06-01 至 2015-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1414634&HistoricalAwards=false
• 关键词: EAPSI; Understanding; water; availability; through

A warming climate in the Qinghai-Tibet Plateau in China has led to decreases in permafrost extent and water insecurity. While it is speculated that there will be large-scale changes in water resource availability, it is unknown at what magnitude and rate these changes will occur. To test this, a three-dimensional, groundwater flow and temperature model will be developed for the Hulugou watershed, the headwaters of the Heihe River located on the northern edge of the Qinghai-Tibet Plateau. This research will be conducted in collaboration with Dr. Sihai Liang, a noted expert on quantitative hydrology and the Hulugou watershed, at the China University of Geosciences in Beijing. Conducting this research in China affords a unique opportunity to gather necessary field measurements. This research will help the hydrologic community by providing new knowledge on the effect of climatic changes on regional water resources.This project will investigate how thawing and freezing permafrost affects groundwater storage and movement. A coupled hydrogeologic model will incorporate the physics of water phase change, allowing for modeling of pore water freeze and thaw and permeability dependence on ice saturation. Model inputs will be constrained and calibrated by collecting and analyzing new field data from the Hulugou watershed. Major outcomes of the model will include: spatial and temporal distributions of subsurface temperature, fluid pressure, groundwater recharge, and discharge to the land surface. Model results will corroborate relationships between climatic effects on this watershed and a similar watershed in the Rocky Mountains in Colorado. While these two watersheds are under similar climatic stresses and both potentially experiencing declines in water resources, underlying causes may differ. This NSF EAPSI is funded in collaboration with the Chinese Ministry of Science and Technology.

中国青藏高原气候变暖导致永久冻土范围缩小和水资源不安全。虽然据推测水资源供应量将发生大规模变化，但尚不清楚这些变化的幅度和速度。为了测试这一点，将为位于青藏高原北缘的黑河源头葫芦沟流域开发三维地下水流量和温度模型。这项研究将与北京中国地质大学定量水文学和葫芦沟流域著名专家梁四海博士合作进行。在中国进行这项研究为收集必要的现场测量结果提供了独特的机会。这项研究将通过提供有关气候变化对区域水资源影响的新知识来帮助水文界。该项目将研究永久冻土的融化和冻结如何影响地下水储存和运动。 耦合水文地质模型将结合水相变的物理原理，允许对孔隙水冻结和融化以及渗透率对冰饱和度的依赖性进行建模。将通过收集和分析葫芦沟流域的新现场数据来约束和校准模型输入。该模型的主要结果将包括：地下温度、流体压力、地下水补给和地表排放的空间和时间分布。模型结果将证实该流域的气候影响与科罗拉多州落基山脉的类似流域之间的关系。虽然这两个流域面临相似的气候压力，并且都可能经历水资源减少，但根本原因可能不同。该 NSF EAPSI 是与中国科学技术部合作资助的。