CAJ | 학술논문

流域划分是分布式水文模型最重要的基础工作之一.有的区域以界河或者海洋为边界,界河、海岸线上河流出口点众多,如果按照传统流域划分方法,不仅出口点定位工作量大,而且容易遗漏部分小的河流出口点,导致模拟范围与研究区域偏离过大.针对这些问题,本文提出了一种子流域划分过程中界河、海岸线的处理方法.即,通过对DEM进行特殊处理,生成界河、海岸线的模拟河网,然后选择界河的末端和海岸线的任意一端作为出口点,从而大大减小了出口点选择的工作量,提高了模拟范围与研究区域吻合的程度.该算法被成功应用到松辽流域,该区域西北面、北面、东面、东南通过国际界河和跨境河流与蒙、俄、朝三国相邻,南面比邻黄、渤海.
류역화분시분포식수문모형최중요적기출공작지일.유적구역이계하혹자해양위변계,계하、해안선상하류출구점음다,여과안조전통류역화분방법,불부출구점정위공작량대,이차용역유루부분소적하류출구점,도치모의범위여연구구역편리과대.침대저사문제,본문제출료일충자류역화분과정중계하、해안선적처리방법.즉,통과대DEM진행특수처리,생성계하、해안선적모의하망,연후선택계하적말단화해안선적임의일단작위출구점,종이대대감소료출구점선택적공작량,제고료모의범위여연구구역문합적정도.해산법피성공응용도송료류역,해구역서북면、북면、동면、동남통과국제계하화과경하류여몽、아、조삼국상린,남면비린황、발해.
Watershed division,as one of the most important fundamental work for distributed hydrological model,usually takes boundary rivers or coastline as the border in some watersheds. However,since there are many river outlets for the boundary rivers or coastline,it is hard to position the outlets and even miss some small outlets according to the traditional watershed division methods, and the simulated watershed would be with great deviation compared with the research area.As far as the problems above concerned,this paper hereby proposed a processing method for boundary rivers and coastline during watershed subdivision,which was realized through having special treatment to DEM to produce the simulated river network of boundary rivers and coastline,and selecting the end of the boundary rivers or any end of the coastline as the outlets.In this way,the work on outlet selection will be greatly facilitated and the coincidence between simulated watershed and research watershed will be promoted. At present,the processing method has been successfully applied to the Songliao River Basin, which meets Mongolia, Russia and North Korea in northwest, north, east and southeast through international boundary rivers and cross-national rivers and is next to the Yellow Sea and Bohai Sea.