CAJ | 학술논문

2014—2015年度黄河凌期,黄河干流最大累计封河长度为707 km,较2000年以来均值偏短327 km。分析其凌情特点和主要影响因素,结果显示：流域冷空气势力整体偏弱,致宁蒙河段流凌日期推迟、封冻河段长度短、封冻断面冰层薄；海勃湾水库的运用,致其坝下内蒙古河段封冻长度减少30 km；流凌、封河期宁夏灌区退水和海勃湾水库集中泄流,致封河流量大,封河速度减慢；包头河段低水位首先封河,大量冰凌卡在其上河段,致内蒙古河段水位上高下低,槽蓄水增量上多下少；下游河段流凌和初封期利津站平均流量偏大、水温偏高、平均流速偏大,导致河口地区基本无凌。
2014—2015년도황하릉기,황하간류최대루계봉하장도위707 km,교2000년이래균치편단327 km。분석기릉정특점화주요영향인소,결과현시：류역랭공기세력정체편약,치저몽하단류릉일기추지、봉동하단장도단、봉동단면빙층박；해발만수고적운용,치기패하내몽고하단봉동장도감소30 km；류릉、봉하기저하관구퇴수화해발만수고집중설류,치봉하류량대,봉하속도감만；포두하단저수위수선봉하,대량빙릉잡재기상하단,치내몽고하단수위상고하저,조축수증량상다하소；하유하단류릉화초봉기리진참평균류량편대、수온편고、평균류속편대,도치하구지구기본무릉。
During the ice period from year 2014 to 2015, the maximum accumulative length of freeze reached 707 km in the Yellow River mainstream, 327 km shorter than the average length since 2000. The paper analyzed the ice flood characteristics and the main impact factors. The results indicate that a) the weak cold air in the Yellow River basin results in the delay of ice-drift date, the short length of freeze mainstream and the thin ice cover in the Ningxia-Inner Mongolia reach;b) the operation of Haibowan Reservoir leads to 30 km decrease of freeze length downstream of the reservoir in the Inner Mongolia reach;c) the releases from both the irrigation area of Ningxia Province and the Haibowan Reservoir during ice-drift and freeze periods give rise to the discharge increase and the slow freeze rate during freeze period;d) the freeze occurred first in the Baotou reach with low water level, and a plenty of ice was blocked upstream of the river reach, resulting in the high water level and large amount of tank storage in the upstream and low water level and small amount of tank storage in the downstream in the Inner Mongolia reach;e) there was almost no ice in the estuary area, because both the average discharge and water temperature were high in the Lijin Hydrologic Station during ice-drift and early freeze periods in the lower river reach.