Hawaii Map and Plot Series of Offshore Bathymetric Transects along Peak Wave Directions for the Ocean Hazards Database

This database consists of a series of maps and plots showing elevations of offshore bathymetric transects perpendicular to State of Hawaii Department of Transportation (HDOT) routes in the Hawaiian Islands. Individual maps show transects of coastal areas adjacent to 302 mileposts along State of Hawaii Department of Transportation (HDOT) state routes on the islands of Hawaii, Maui, Molokai, Oahu and Kauai previously identified for their vulnerability to the effects of climate change as part of the Statewide Coastal Highways Project Report. Mileposts are identified by Brandes et al. (2019). HDOT state routes and county street centerline datasets are acquired from HDOT (2017) and HOLIS, C&CH (2017). Elevations along the transect are referenced to local mean sea level (LMSL) and are sampled from a Hawaiian bathymetric digital elevation model (DEM) created by the Hawaii Mapping Research Group (HMRG, 2016). Please read ‘Description-Map of Offshore Bathymetric Transects along Peak Wave Directions.docx’ for detailed information. References Brandes, H., Doygun, O., Rossi, C., Francis, O., Yang, L., and Togia, H., (2019) Coastal Road Exposure Susceptibility Index (CRESI) for the State of Hawaii Statewide Coastal Highway Program Report. Department of Civil and Environmental Engineering, University of Hawai'i at Manoa, doi: 10.17632/frr3fsx3j6.2. HDOT (State of Hawaii Department of Transportation). “StateRoutes_SDOT” [shapefile]. Scale Not Given. State Routes. Hawaii Statewide GIS Program. Retrieved from http://files.hawaii.gov/dbedt/op/gis/data/StateAndCountyRoutes.shp.zip (December 2017). HOLIS, C&CH (Honolulu Land Information System, City and County of Honolulu). “Oah_streets” [shapefile]. Scale Not Given. Oahu Street Centerlines. Hawaii Statewide GIS Program. Retrieved from http://geoportal.hawaii.gov/datasets/roads-honolulu-county (December 2017). HMRG (Hawaii Mapping Research Group). (2016). Main Hawaiian Islands Multibeam Bathymetry and Backscatter Synthesis. School of Ocean and Earth Science and Technology, University of Hawai'i at Manoa. Retrieved from http://www.soest.hawaii.edu/hmrg/multibeam/bathymetry.php. (February, 2019).

本数据库包含一系列地图与绘图，用于展示夏威夷群岛内垂直于夏威夷州交通运输部（State of Hawaii Department of Transportation, HDOT）道路的近岸水深断面高程。单幅地图展示了夏威夷岛、毛伊岛、莫洛凯岛、瓦胡岛及考艾岛境内，沿HDOT州级道路布设的302个里程桩周边沿岸区域的水深断面数据，这些区域此前作为《全州沿海公路项目报告》的组成部分，被认定为易受气候变化影响的区域。上述里程桩由Brandes等人（2019）完成标识。

夏威夷州交通运输部州级道路矢量数据集及县街道中心线矢量数据集分别获取自HDOT（2017）与檀香山土地信息系统、城市与郡（HOLIS, C&CH，2017）。断面高程以当地平均海平面（local mean sea level, LMSL）为基准，采样自夏威夷测绘研究组（Hawaii Mapping Research Group, HMRG，2016）构建的夏威夷海域水深数字高程模型（digital elevation model, DEM）。

如需获取详细信息，请查阅《近岸水深断面沿峰值浪向分布图说明.docx》（原文文件名：Description-Map of Offshore Bathymetric Transects along Peak Wave Directions.docx）。

参考文献：
1. Brandes, H.、Doygun, O.、Rossi, C.、Francis, O.、Yang, L. 及 Togia, H.（2019）. 夏威夷州全州沿海公路项目报告配套的沿海道路暴露易感性指数（Coastal Road Exposure Susceptibility Index, CRESI）. 夏威夷大学马诺阿分校土木与环境工程系. DOI: 10.17632/frr3fsx3j6.2.
2. 夏威夷州交通运输部（HDOT）. "StateRoutes_SDOT" [Shapefile格式文件]. 未标注比例尺. 州级道路. 夏威夷全州地理信息系统项目. 2017年12月获取自 http://files.hawaii.gov/dbedt/op/gis/data/StateAndCountyRoutes.shp.zip.
3. HOLIS, C&CH（檀香山土地信息系统、檀香山城市与郡）. "Oah_streets" [Shapefile格式文件]. 未标注比例尺. 瓦胡岛街道中心线. 夏威夷全州地理信息系统项目. 2017年12月获取自 http://geoportal.hawaii.gov/datasets/roads-honolulu-county.
4. 夏威夷测绘研究组（HMRG）.（2016）. 夏威夷主群岛多波束水深与后向散射合成数据集. 夏威夷大学马诺阿分校海洋与地球科学与技术学院. 2019年2月获取自 http://www.soest.hawaii.edu/hmrg/multibeam/bathymetry.php.