Diatom Evidence of a Paleohurricane-Induced Coastal Flooding Event in Weeks Bay, Alabama, USA

doi:10.2112/JCOASTRES-D-17-00199.1

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院新生代地质与环境重点实验室

	Diatom Evidence of a Paleohurricane-Induced Coastal Flooding Event in Weeks Bay, Alabama, USA
	Wang, Luo 1; Bianchette, Thomas A.2,3; Liu, Kam-biu 3
刊名	JOURNAL OF COASTAL RESEARCH
	2019-05-01
卷号	35 期号:3 页码:499-508
关键词	Sediment loss on ignition storm surge salinity
ISSN号	0749-0208
DOI	10.2112/JCOASTRES-D-17-00199.1
英文摘要	Sand layers deposited in coastal backbarrier lakes and marshes have been taken as indicators of overwash processes generated by hurricane landfalls, but sand layers discovered in sediments from non-backbarrier estuarine settings have not been as thoroughly investigated. Sedimentological and diatom analyses of a 44-cm core (WB 08-04) taken from a seep forest on the north shore of Weeks Bay in southern Alabama contains an 8-cm-thick sand layer embedded in dark gray peat. As an aid to determining the provenance of the sand layer, diatoms were also analyzed from eight surface samples taken from five nearby environments representing different salinity conditions. The diatom assemblage in the sand layer is dominated by acidophilous (Eunotia spp., Frustulia krammeri) and freshwater (Pinnularia neomajor, Pinnularia latevittata) species, suggesting that they were transported by fluvial processes from the acidic and freshwater bogs above the banks of Fish River. The sand layer also contains small percentages of brackish and marine diatoms (Tryblionella marginulata, Planothidium delicatulum), suggesting that incursion of seawater and brackish water from Weeks Bay and Mobile Bay also played a role in its deposition. It is inferred that the sand layer was deposited by a hurricane that brought both intense precipitation to coastal Alabama and a storm surge into Weeks Bay. Heavy rainfall caused overbank flooding of Fish River, which transported sand from the river banks and diatoms from nearby bogs to the coring site. Concurrently, storm surge waters also deposited marine and brackish diatoms at the site. Historical records suggest that the Bernard Romans' Gulf Coast Hurricane in AD 1772 may have been responsible for the flooding that resulted in the deposition of the sand layer.
资助项目	U.S. Department of Energy through the National Institute for Climate Change Research (NICCR) Coastal Center at Tulane University in New Orleans, Louisiana
WOS关键词	SOUTH-CAROLINA COAST ; HURRICANES ; SALINITY ; DEPOSITS ; FLORIDA ; RECORD ; LAKE ; RECONSTRUCTION ; ASSEMBLAGES ; INDICATORS
WOS研究方向	Environmental Sciences & Ecology ; Physical Geography ; Geology
语种	英语
出版者	COASTAL EDUCATION & RESEARCH FOUNDATION
WOS记录号	WOS:000466416900003
资助机构	U.S. Department of Energy through the National Institute for Climate Change Research (NICCR) Coastal Center at Tulane University in New Orleans, Louisiana ; U.S. Department of Energy through the National Institute for Climate Change Research (NICCR) Coastal Center at Tulane University in New Orleans, Louisiana ; U.S. Department of Energy through the National Institute for Climate Change Research (NICCR) Coastal Center at Tulane University in New Orleans, Louisiana ; U.S. Department of Energy through the National Institute for Climate Change Research (NICCR) Coastal Center at Tulane University in New Orleans, Louisiana ; U.S. Department of Energy through the National Institute for Climate Change Research (NICCR) Coastal Center at Tulane University in New Orleans, Louisiana ; U.S. Department of Energy through the National Institute for Climate Change Research (NICCR) Coastal Center at Tulane University in New Orleans, Louisiana ; U.S. Department of Energy through the National Institute for Climate Change Research (NICCR) Coastal Center at Tulane University in New Orleans, Louisiana ; U.S. Department of Energy through the National Institute for Climate Change Research (NICCR) Coastal Center at Tulane University in New Orleans, Louisiana
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/92126]
专题	地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者	Bianchette, Thomas A.
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China 2.Univ Michigan, Coll Arts Sci & Letters, Dept Nat Sci, Dearborn, MI 48128 USA 3.Louisiana State Univ, Coll Coast & Environm, Dept Oceanog & Coastal Sci, Baton Rouge, LA 70803 USA
推荐引用方式 GB/T 7714	Wang, Luo,Bianchette, Thomas A.,Liu, Kam-biu. Diatom Evidence of a Paleohurricane-Induced Coastal Flooding Event in Weeks Bay, Alabama, USA[J]. JOURNAL OF COASTAL RESEARCH,2019,35(3):499-508.
APA	Wang, Luo,Bianchette, Thomas A.,&Liu, Kam-biu.(2019).Diatom Evidence of a Paleohurricane-Induced Coastal Flooding Event in Weeks Bay, Alabama, USA.JOURNAL OF COASTAL RESEARCH,35(3),499-508.
MLA	Wang, Luo,et al."Diatom Evidence of a Paleohurricane-Induced Coastal Flooding Event in Weeks Bay, Alabama, USA".JOURNAL OF COASTAL RESEARCH 35.3(2019):499-508.