IGGCAS OpenIR  > 新生代地质与环境院重点实验室
Diatom Evidence of a Paleohurricane-Induced Coastal Flooding Event in Weeks Bay, Alabama, USA
Wang, Luo1; Bianchette, Thomas A.2,3; Liu, Kam-biu3
2019-05-01
Source PublicationJOURNAL OF COASTAL RESEARCH
ISSN0749-0208
Volume35Issue:3Pages:499-508
AbstractSand 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.
KeywordSediment loss on ignition storm surge salinity
DOI10.2112/JCOASTRES-D-17-00199.1
Funding OrganizationU.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
WOS KeywordSOUTH-CAROLINA COAST ; HURRICANES ; SALINITY ; DEPOSITS ; FLORIDA ; RECORD ; LAKE ; RECONSTRUCTION ; ASSEMBLAGES ; INDICATORS
Language英语
Funding ProjectU.S. Department of Energy through the National Institute for Climate Change Research (NICCR) Coastal Center at Tulane University in New Orleans, Louisiana
Funding OrganizationU.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
WOS Research AreaEnvironmental Sciences & Ecology ; Physical Geography ; Geology
WOS SubjectEnvironmental Sciences ; Geography, Physical ; Geosciences, Multidisciplinary
WOS IDWOS:000466416900003
PublisherCOASTAL EDUCATION & RESEARCH FOUNDATION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/92126
Collection新生代地质与环境院重点实验室
Corresponding AuthorBianchette, Thomas A.
Affiliation1.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
Recommended Citation
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.
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