流凌封河预报指标法及其在黄河内蒙古河段的应用
Indexes Analysis Method for Ice-Run and Freeze-Up Forecasting in Inner Mongolia Reach of the Yellow River
陈冬伶 1霍建伟 2刘吉峰1
作者信息
- 1. 黄河水利委员会 水文局,河南 郑州 450004
- 2. 黄河勘测规划设计研究院有限公司,河南 郑州 450003
- 折叠
摘要
把流凌封河累积负气温作为黄河内蒙古河段封河预报关键指标,明确累积负气温与封河流量、降温强度、河槽形态等的关系,确定现有河槽形态以及海勃湾水库运用影响下不同流量和降温强度封河所需的累积负气温,并建立了流凌封河累积负气温预估公式.指标法可以在很大程度上提高黄河内蒙古河段封河预报的预见期与精度.
Abstract
Taking the cumulative negative air temperature from ice runs presence to freeze-up as the key index factor for the prediction of freeze-up in Inner Mongolia reach,the cumulative negative temperature index required for the formation of freeze-up under different dynamic,thermal and river channel conditions was clarified,and a prediction model for freeze-up index was established.The index analysis method for freeze-up forecasting could greatly improve the accuracy and the forecasting period of freeze-up forecasting.
关键词
封河指标/封河流量/河槽形态/累积负气温/黄河内蒙古河段Key words
freeze-up index/freeze-up discharge/river channel conditions/cumulative negative air temperature/Inner Mongolia reach of Yellow River引用本文复制引用
基金项目
国家自然科学基金资助项目(U2243221)
黄委水文局专业技术创新团队项目()
青海黄河上游水电开发有限责任公司科技项目(KY-C-2022-SD01)
出版年
2024