![]() Remote sensing data support our interpretation that Hurricane Rita caused significant shoreline erosion and coastal recession in 2005, rendering the sampling locations at least 30 m closer to the ocean and thereby more susceptible to storm surges when Hurricane Ike struck in 2008. Both loss-on-ignition and XRF results also show that despite being a stronger storm, the Hurricane Rita layers are much thinner than those of Hurricane Ike in all monoliths. In addition, remote sensing images show that the rate of average shoreline retreat at the RWR is ~14.5 m/yr from 1998 to 2017, and 19 m/year and 25.5 m/yr during the Hurricane Rita and Ike years, respectively. The geochemical results show that the storm deposits are characterized by higher-than-average values of Ca, Sr, Zr, and carbonates and low percentages of water and organics. Loss-onignition and X-ray fluorescence (XRF) analyses were performed on all three sediment monoliths to study the sedimentological and geochemical characteristics of these two storm deposits. Each monolith contains two distinct light-colored calcareous storm deposits that are attributable to these two landfalling hurricanes. In 2013, three ~30 cm sediment monoliths dominated by brown clay were recovered along a ~30 m transect perpendicular to the shoreline from the RWR. In 20, Hurricanes Rita and Ike made landfalls as category 3 and 2 hurricanes to the west of Rockefeller Wildlife Refuge (RWR) in southwestern Louisiana. Journal of Coastal Research, Special Issue No. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). ![]() Multi-proxy Characterization of Hurricane Rita and Ike Storm Deposits in a Coastal Marsh in the Rockefeller Wildlife Refuge, Southwestern Louisiana. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |