Pre-and post typhoon sediment patterns in the central Philippine Islands

强风暴可能对沿海居民、已建基础设施以及近海海洋渔业和生态系统造成破坏性影响。 超级台风海燕是有史以来最大的风暴，于2013年秋季袭击菲律宾，造成陆地严重破坏。 同样，它对海洋生态系统和生物群落产生了毁灭性影响，但由于其位于水下，这些影响的程度一般都没有记录和认识。 这项研究是NSF快速响应，以记录和评估超级风暴海燕及其对海洋生物和海洋生态系统的影响导致的菲律宾中部岛屿的沉积物侵蚀和重新分布。 将进行海底沉积物绘图和通过活塞取芯采集样品，以测量菲律宾中部群岛从潮间带到深水（海平面以下500米）环境中原有碳酸盐和硅质沉积物覆盖层的累积和（或）侵蚀净变化。 调查结果将用于研究正常和极端事件时间框架之间沉积和侵蚀过程的差异。 将使用活塞岩心收集沉积物，并记录海底的摄影图像。 还将收集研究区域的无人机航拍照片。这些数据将与主要调查员在过去三年中采集的同一地点的时间序列数据进行比较。将特别强调构成菲律宾渔业和旅游业基础的海草床、珊瑚礁和生物群落的变化。 这项工作的更广泛影响包括与菲律宾和澳大利亚科学家的合作，以及对浅海和深海海洋生态系统的危害评估，可用于对太平洋岛屿国家的破坏性风暴进行经济评估。

Strong storms can have devastating impacts on people living on the coasts, built infrastructure, and on marine fisheries and ecosystems that lie offshore. Super typhoon Haiyan, the largest storm ever recorded, hit the Philippines in the Fall of 2013 causing serious damage on land. Similarly, it had devastating impacts on marine ecosystems and biological communities, but the extent of these impacts because they are not readily visible due to their underwater locations are generally under documented and appreciated. This research is an NSF RAPID response to document and assess the sediment erosion and redistribution across the central Philippine Islands as a result of super storm Haiyan and its impact on sea life and marine ecosystems. Mapping of seafloor sediments and sample collection via piston coring will be undertaken to measure net changes in the accumulation and/or erosion of pre-existing carbonate and siliciclastic sediment cover from intertidal to deep water (500 meters below sea level) environments in the Central Philippine Islands. Results of the investigation will be used to examine differences in sedimentation and erosion processes between normal and extreme-event timeframes. Sediments will be collected using piston cores and photographic images will be recorded of the seafloor. Drone-enabled aerial photography of the study area will also be collected. These data will be compared with time-series data of the same locations that have been taken over the last three years by the principle investigator. Particular emphasis will be given to changes in sea grass beds, reefs, and biological communities that form the basis of Philippine fisheries and tourism. Broader impacts of the work include collaboration with Philippine and Australian scientists and hazard assessment of shallow and deep offshore marine ecosystems that can be used for economic assessment of damaging storms in Pacific Island nations.