Projected Seafloor Elevation Along the Florida Reef Tract From Deerfield Beach to Homestead, Florida-75 Years From 2014 Based on Historical Rates of Mean Elevation Change

The U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center conducted research to quantify the combined effect of all constructive and destructive processes on modern coral reef ecosystems by projecting future regional-scale changes in seafloor elevation for several sites along the Florida Reef Tract, Florida (FL) including the shallow seafloor along the coast of Miami, FL. USGS staff used historical bathymetric point data from the 1930's (National Oceanic and Atmospheric Administration (NOAA) Office of Coast Survey, see Yates and others, 2017) and light detection and ranging (lidar)-derived data acquired in 2002 (Brock and others, 2006, 2007) to calculate historical seafloor elevation changes in the Upper Florida Keys (UFK) (Yates and others, 2017). Using those changes in seafloor elevation, annual rates of elevation change were calculated for 13 habitat types found in the UFK reef tract. The annual rate of mean elevation change for each habitat type was applied to a digital elevation model (DEM) extending from Deerfield Beach to Homestead, FL that was modified from the NOAA National Centers for Environmental Information to project future seafloor elevation (from 2014) along the Miami section of the Florida Reef Tract. Grid resolution for the DEM is 1/3 arc second (approximately 10 meters). For more information visit: Yates, K K., Zawada, D.G., Smiley, N.A., and Tiling-Range, G., 2017, Divergence of seafloor elevation and sea level rise in coral reef ecosystems: Biogeosciences, v. 14, p. 1739-1772, https://doi.org/10.5194/bg-14-1739-2017.

美国地质调查局（U.S. Geological Survey, USGS）圣彼得堡海岸与海洋科学中心开展研究，旨在量化所有建设性与破坏性过程对现代珊瑚礁生态系统的综合影响，具体方式为针对佛罗里达州境内的佛罗里达礁带（Florida Reef Tract）沿线的多个站点预测其海底海拔的未来区域尺度变化，其中包括佛罗里达州迈阿密沿岸的浅海海底。该中心研究人员使用了1930年代的历史海底测深测点数据（源自美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）海岸勘测办公室，详见Yates等人2017年的研究），以及2002年获取的激光雷达（light detection and ranging, lidar）衍生数据（Brock等人，2006、2007年），以此计算佛罗里达上礁岛群（Upper Florida Keys, UFK）的历史海底海拔变化（Yates等人2017年的研究）。基于上述海底海拔变化数据，研究人员针对佛罗里达上礁岛群礁带内的13种生境类型，计算得到各自的海拔年变化速率。将每种生境类型的平均海拔年变化速率，应用至从佛罗里达州迪尔菲尔德海滩延伸至霍姆斯特德的数字高程模型（digital elevation model, DEM）中——该模型由美国国家海洋和大气管理局国家环境信息中心修改得到，用于预测佛罗里达礁带迈阿密段（自2014年起）的未来海底海拔。该数字高程模型的网格分辨率为1/3弧秒（约10米）。如需获取更多相关信息，请参阅：Yates, K K., Zawada, D.G., Smiley, N.A., 及 Tiling-Range, G., 2017, 《珊瑚礁生态系统中海底海拔变化与海平面上升的分化》，《生物地球科学》，第14卷，第1739-1772页，https://doi.org/10.5194/bg-14-1739-2017.