Fine resolution basin database using 10m DEM at the area along Sanriku coast of Japan

Takehisa Yamakita, H. Imaki
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Abstract

Imaki 3 This fine resolution basin database provides basin model over 10 ha sub-basins of the Sanriku coastal area located in the north west Pacific side of Japan. The data contain watershed boundary and flow path data about the target area created by use of a 10 m digital elevation model (DEM). Using this data, the coverage area was increased over 721.66 km 2 compared to the low resolution public data set provided by the government. It increased the coastline coverage from 17% to 84% compared with the low resolution data set in 1 km grid. For use in the coastal area or river discharge model, this data also contains the overall drainage basin boundary at the river mouth. The area of this survey was highly damaged by the tsunami on The 2011 Great East Japan Earthquake and post-disaster anthropogenic impact. Thus, this database will be of interest in the context of changes in land use and river discharge to assess both post-disaster anthropogenic impacts on the ecosystems. Complete dataset is available via site: http: // www.godac.jamstec.go.jp / catalog / data_catalog / metadataDisp /
日本三陆海岸10m DEM精细分辨率流域数据库
Imaki 3该高分辨率盆地数据库提供了位于日本西北太平洋侧三陆沿海地区10公顷以上子盆地的盆地模型。这些数据包含流域边界和目标区域的流道数据,这些数据是使用10米数字高程模型(DEM)创建的。利用该数据,与政府提供的低分辨率公开数据集相比,覆盖面积增加了721.66 km2以上。与低分辨率1公里网格数据集相比,海岸线覆盖率从17%提高到84%。用于沿海地区或河流排放模型时,该数据还包含河口处的整体流域边界。本次调查的区域受到2011年东日本大地震海啸和灾后人为影响的严重破坏。因此,该数据库将对土地利用和河流流量变化的背景下评估灾后对生态系统的人为影响感兴趣。完整的数据集可通过站点获得:http: // www.godac.jamstec.go.jp / catalog / data_catalog / metadataDisp /
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