EAPSI: Sedimentary Record of Typhoon Ketsana from Vietnam: Implications for Long-Term Tropical Cyclon

更好地了解热带气旋的过程，对于预测和减轻未来类似风暴对环境和不断扩大的沿海社区的影响至关重要。特别是东南亚，容易受到频繁的台风和严重的破坏，迅速增加的人口往往定居在经济活动集中的沿海地区，加剧了沿海灾害的负面影响。本研究的目的是分析2009年台风凯萨娜在越南岘港附近海岸引起的风暴潮留下的沉积物。微体化石数据将与物理沉积学数据相结合，以描述热带气旋对越南的影响。这一项目将增进对热带气旋淹没特点和影响的了解，并有助于对沿海社区人口密集地区进行更准确的风险评估和沿海灾害规划。研究将在南洋理工大学新加坡地球观测站进行，并将由国际公认的海啸和风暴沉积物专家Adam Switzer助理教授监督。新加坡地球观测站是研究热带气旋事件的理想地点，拥有完成这项研究所需的最先进设施。海岸沉积物保存了热带气旋的地质证据，这些沉积物提高了我们对登陆风暴过程的理解。记录这一灾难性海洋淹没的地质证据将有助于更好地了解热带气旋及其相关过程。将把矿床的微体化石（有孔虫）组成和物理沉积学数据与从海滩表面和近海采集的样品进行比较。所收集样品的有孔虫分类学和埋藏学数据将有助于分析凯萨娜台风的海洋淹没事件。越南沿海地层记录可以与其他热带气旋的沉积记录进行比较，以帮助校准沉积物记录中过去风暴事件的特征。热带气旋事件的表征对于推进地质、海洋和环境领域的知识和理解非常重要。东亚和太平洋夏季研究所计划下的这个奖项支持美国研究生的夏季研究，由NSF和新加坡国家研究基金会共同资助。

A better understanding of tropical cyclone processes is imperative in order to predict and mitigate the effects of similar future storms on the environment and expanding coastal communities. Southeast Asia, in particular, is susceptible to frequent typhoons and severe damage, and rapidly expanding populations tend to settle on the coasts where there is concentrated economic activity, exacerbating the negative consequences of coastal hazards. The objective of this research is to analyze sediment deposits left by the storm surge associated with Typhoon Ketsana on the Vietnam coast near Da Nang in 2009. Microfossil data will be combined with physical sedimentological data to characterize the impacts of the tropical cyclone on Vietnam. This project will improve understanding of tropical cyclone inundation characteristics and impacts and contribute to more accurate risk assessment and coastal hazard planning for dense populations in coastal communities. Research will be conducted at the Earth Observatory of Singapore, Nanyang Technological University and will be supervised by Assistant Professor Adam Switzer, who is an internationally recognized expert in tsunami and storm deposits. The Earth Observatory of Singapore is in an ideal location to study tropical cyclone events with state of the art facilities necessary to complete this research. Coastal sediments archive geologic evidence of tropical cyclones and these sedimentary deposits improve our understanding of landfalling storm processes. The documentation of the geological evidence of this catastrophic marine inundation will contribute to a better understanding of tropical cyclones and their associated processes. Microfossil (foraminifera) composition of the deposits and physical sedimentological data will be compared with samples collected from the beach face and offshore. A combination of foraminiferal taxonomy and taphonomy data for the samples collected will assist in the analysis of the marine inundation event of Typhoon Ketsana. The coastal stratigraphic record in Vietnam can be compared with other depositional records from tropical cyclones to help calibrate the characteristics of past storm events in sediment records. Characterization of tropical cyclone events is immensely important for advancing knowledge and understanding within geologic, oceanographic, and environmental fields. This award under the East Asia and Pacific Summer Institutes program supports summer research by a U.S. graduate student and is jointly funded by NSF and the National Research Foundation of Singapore.