| DOI: | 10.2172/1259757
|
| 报告号: | LLNL--TR-686433
|
| 报告题名: | California GAMA Special Study: Importance of River Water Recharge to Selected Groundwater Basins |
| 作者: | Visser, Ate; Moran, Jean E.; Singleton, Michael J.; Esser, Bradley K.
|
| 出版年: | 2016
|
| 发表日期: | 2016-03-21
|
| 总页数: | 30
|
| 国家: | 美国
|
| 语种: | 英语
|
| 中文主题词: | 灌溉
; 降水
; 地下水位
; 地表水
|
| 主题词: | IRRIGATION
; PRECIPITATION
; WATER TABLE
; SURFACE WATER
|
| 英文摘要: | River recharge represents 63%, 86% and 46% of modern groundwater in the Mojave Desert, Owens Valley, and San Joaquin Valley, respectively. In pre-modern groundwater, river recharge represents a lower fraction: 36%, 46%, and 24% respectively. The importance of river water recharge in the San Joaquin valley has nearly doubled and is likely the result of a total increase of recharge of 40%, caused by river water irrigation return flows. This emphasizes the importance of recharge of river water via irrigation for renewal of groundwater resources. Mountain front recharge and local precipitation contribute to recharge of desert groundwater basins in part as the result of geological features focusing scarce precipitation promoting infiltration. River water recharges groundwater systems under lower temperatures and with larger water table fluctuations than local precipitation recharge. Surface storage is limited in time and volume, as evidenced by cold river recharge temperatures resulting from fast recharge, compared to the large capacity for subsurface storage. Groundwater banking of seasonal surface water flows therefore appears to be a natural and promising method for increasing the resilience of water supply systems. The distinct isotopic and noble gas signatures of river water recharge, compared to local precipitation recharge, reflecting the source and mechanism of recharge, are valuable constraints for numerical flow models. |
| URL: | http://www.osti.gov/scitech/servlets/purl/1259757
|
| Citation statistics: |
|
| 资源类型: | 研究报告
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/42197
|
| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
|
| File Name/ File Size |
Content Type |
Version |
Access |
License |
|
|---|
| 1259757.pdf（1518KB） | 研究报告 | -- | 开放获取 | | View
Download
|
|
| Recommended Citation: | |
Visser, Ate,Moran, Jean E.,Singleton, Michael J.,et al. California GAMA Special Study: Importance of River Water Recharge to Selected Groundwater Basins. 2016-01-01.
|
|
|