SGER: Impact of Hurricane Georges and Recovery Along NE Gulf Coast

最近在密西西比海岸登陆的乔治飓风给我们提供了一个独特的机会来解决一个尚未回答的问题：“一个典型的富含沉积物、退化/递进系统的风暴后反应与一个缺乏沉积物、典型的海侵屏障系统的反应相比如何？”富沙退退系统的风暴后调整尚未得到详细的研究。然而，我们的初步调查表明，在沿海环境中，河流主导系统的长期演变，如现代密西西比河三角洲平原，可能受到诸如乔治飓风等灾难性事件的重大影响，特别是在次三角洲生长和分布正在推进的沿海边缘。虽然对风暴的反应是明显的，并且将在本研究中更详细地记录，但对风暴后的调整阶段根本不了解。此外，我们对强风暴后堰洲岛恢复的初始阶段的理解主要基于假设，主要受我们对天气和较小规模风暴期间海岸系统和相关过程的日常动态的解释所控制。我们的主要目标是量化和更好地理解两个不同地貌环境的风暴后调整：一个是位于路易斯安那州伯德斯富特三角洲的活跃建筑、河流主导、沉积物丰富的环境，另一个是由Chandeleur岛（路易斯安那州）、西船岛（密西西比州）和圣罗莎岛（佛罗里达州）组成的沉积物缺乏、海侵系统，通过建立关键的监测点，这些监测点可以随着时间的推移重新占用。

9903984StoneThe recent landfall of Hurricane Georges along the Mississippi coast has afforded us a unique opportunity to address an as yet unanswered question: "How does the post-storm response of a typically sediment rich, regressive/progradational system compare with that of a sediment starved, typically transgressive barrier system?" The post-storm adjustment of sediment rich, retrogressive systems has not been investigated in any detail. However, our preliminary investigations indicate that the longer term evolution of fluvially dominated systems in a coastal environment, such as the modern Mississippi River delta plain, are likely significantly influenced by catastrophic events such as Hurricane Georges---particularly on their seaward margins where subdelta growth is occurring and distributaries are prograding. While the response to the storm is evident and will be documented in more detail in this study, the post-storm adjustment phase is not at all understood. In addition, our understanding of the initial phases of barrier island recovery after severe storms is based primarily on supposition, largely governed by our interpretation of the day-to-day dynamics of coastal systems and associated processes during fairweather and storms of lesser magnitude. Our primary objective is to quantify and better comprehend the post-storm adjustment of two geomorphologically distinct environments: an actively building, fluvially dominated, sediment rich environment located in the Birdsfoot delta, Louisiana and a sediment starved, transgressive system comprised of Chandeleur Island (Louisiana), West Ship Island (Mississippi) and Santa Rosa Island (Florida) by establishing key monitoring sites that can be reoccupied over time.