Deciphering Holocene sea-level history on the U.S. Gulf Coast: A high-resolution record from the Mississippi Delta

2004 ◽  
Vol 116 (7) ◽  
pp. 1026 ◽  
Author(s):  
Torbjörn E. Törnqvist ◽  
Juan L. González ◽  
Lee A. Newsom ◽  
Klaas van der Borg ◽  
Arie F.M. de Jong ◽  
...  
Keyword(s):  
High Resolution ◽  
Sea Level ◽  
Mississippi Delta ◽  
Gulf Coast ◽  
The U.S ◽  
Holocene Sea Level

scholarly journals A Dutch geoscience perspective on the Katrina disaster

2007 ◽  
Vol 86 (3) ◽  
pp. 307-315 ◽  
Author(s):  
T.E. Törnqvist
Keyword(s):  
Sea Level ◽  
Mississippi Delta ◽  
Gulf Coast ◽  
Wetland Loss ◽  
Decision Makers ◽  
Long Term Stability ◽  
Anthropogenic Processes ◽  
The Times ◽  
Precarious Situation

AbstractA combination of geological and anthropogenic processes have rendered the U.S. Gulf Coast in general – and the Mississippi Delta in particular – extremely sensitive to coastal hazard. Thus, the Katrina disaster was not a question of ‘if’ but of ‘when’. This contribution outlines the geo-environmental context of the Mississippi Delta that evolved during the 20th century and set the stage for Hurricane Katrina’s devastation. This includes a brief discussion of the processes responsible for coastal erosion and wetland loss, the proposed measures to combat these problems, and the policy decisions (or, rather, the lack thereof) made so far. A connection is made with the 1953 storm surge that devastated the southwestern Netherlands and had a profound impact on Dutch science and engineering by providing the impetus for the widely known and highly praised Delta Plan, as well as for unprecedented studies of Holocene sea-level change. Whether a similar route will be followed for the Gulf Coast is primarily dependent on the amount of political will. Results are presented of recent studies of crustal movements in the Mississippi Delta that show surprising long-term stability of the Pleistocene basement, evidence that could prove critical for decision makers with regard to the rebuilding process. Finally, the neglect of the precarious situation along the Gulf Coast by the federal government is viewed as a possible metaphor for current U.S. policies with respect to science in general, and to global warming in particular.“Land that sits below sea level. Levees and dams that stand against nature’s fury. Countryside that sinks more every year. New Orleans? No. Holland: a nation whose flood protections makes ours look primitive and slapdash”John McQuaid, The Times-Picayune, November 13, 2005

High-resolution reconstruction of a coastal barrier system: impact of Holocene sea-level change

Sedimentology ◽  
2014 ◽  
Vol 62 (3) ◽  
pp. 928-969 ◽  
Author(s):  
Mikkel Fruergaard ◽  
Thorbjørn J. Andersen ◽  
Lars H. Nielsen ◽  
Peter N. Johannessen ◽  
Troels Aagaard ◽  
...  
Keyword(s):  
High Resolution ◽  
Sea Level ◽  
Sea Level Change ◽  
Level Change ◽  
Coastal Barrier ◽  
High Resolution Reconstruction ◽  
System Impact ◽  
Holocene Sea Level

scholarly journals Geomorphology of Canyon Outlets in Zrmanja River Estuary and Its Effect on the Holocene Flooding of Semi-enclosed Basins (the Novigrad and Karin Seas, Eastern Adriatic)

Water ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2807
Author(s):  
Ozren Hasan ◽  
Slobodan Miko ◽  
Dea Brunović ◽  
George Papatheodorou ◽  
Dimitris Christodolou ◽  
...  
Keyword(s):  
High Resolution ◽  
Sea Level Rise ◽  
Sea Level ◽  
Geophysical Methods ◽  
River Estuary ◽  
Side Scan Sonar ◽  
The Holocene ◽  
Karst Environment ◽  
Gis Environment ◽  
Holocene Sea Level

Detailed multi-beam bathymetry, sub-bottom acoustic, and side-scan sonar observations of submerged canyons with tufa barriers were used to characterize the Zrmanja River karst estuary on the eastern Adriatic coast, Croatia. This unique karst environment consists of two submerged karst basins (Novigrad Sea and Karin Sea) that are connected with river canyons named Novsko Ždrilo and Karinsko Ždrilo. The combined use of high-resolution geophysical data with legacy topography and bathymetry data in a GIS environment allowed for the description and interpretation of this geomorphological setting in relation to the Holocene sea-level rise. The tufa barriers had a predominant influence on the Holocene flooding dynamics of the canyons and karst basins. Here, we describe the possible river pathways from the basins during the lowstand and the formation of a lengthening estuary during the Holocene sea-level rise. Based on the analyzed morphologies and the relative sea-level curve for the Adriatic Sea, the flooding of the Novsko Ždrilo occurred 9200 years before present (BP) and Karinsko Ždrilo was flooded after 8400 years BP. The combination of high-resolution geophysical methods gave an accurate representation of the karst estuarine seafloor and the flooding of semi-isolated basins due to sea-level rise.

scholarly journals The Influence of Sediment Isostatic Adjustment on Sea Level Change and Land Motion Along the U.S. Gulf Coast

2018 ◽  
Vol 123 (1) ◽  
pp. 780-796 ◽  
Author(s):  
Joseph Kuchar ◽  
Glenn Milne ◽  
Martin Wolstencroft ◽  
Ryan Love ◽  
Lev Tarasov ◽  
...  
Keyword(s):  
Sea Level ◽  
Gulf Coast ◽  
Sea Level Change ◽  
Level Change ◽  
Isostatic Adjustment ◽  
The U.S

scholarly journals Response of Storm-Related Extreme Sea Level along the U.S. Atlantic Coast to Combined Weather and Climate Forcing

2020 ◽  
Vol 33 (9) ◽  
pp. 3745-3769 ◽  
Author(s):  
Jianjun Yin ◽  
Stephen M. Griffies ◽  
Michael Winton ◽  
Ming Zhao ◽  
Laure Zanna
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Storm Surge ◽  
Gulf Coast ◽  
Climate Modeling ◽  
Atlantic Coast ◽  
The United States ◽  
Coastal Flooding ◽  
Meridional Overturning Circulation ◽  
The U.S

AbstractStorm surge and coastal flooding caused by tropical cyclones (hurricanes) and extratropical cyclones (nor’easters) pose a threat to communities along the Atlantic coast of the United States. Climate change and sea level rise are altering the statistics of these extreme events in a rather complex fashion. Here we use a fully coupled global weather/climate modeling system (GFDL CM4) to study characteristics of extreme daily sea level (ESL) along the U.S. Atlantic coast and their response to global warming. We find that under natural weather processes, the Gulf of Mexico coast is most vulnerable to storm surge and related ESL. New Orleans is a striking hotspot with the highest surge efficiency in response to storm winds. Under a 1% per year atmospheric CO2 increase on centennial time scales, the anthropogenic signal in ESL is robust along the U.S. East Coast. It can emerge from the background variability as soon as in 20 years, or even before global sea level rise is taken into account. The regional dynamic sea level rise induced by the weakening of the Atlantic meridional overturning circulation facilitates this early emergence, especially during wintertime coastal flooding associated with nor’easters. Along the Gulf Coast, ESL is sensitive to the modification of hurricane characteristics under the CO2 forcing.

Late glacial to Holocene sea-level changes in the Sea of Marmara: new evidence from high-resolution seismics and core studies

2010 ◽  
Vol 31 (1) ◽  
pp. 1-18 ◽  
Author(s):  
Kürşad Kadir Eriş ◽  
M. N. Çağatay ◽  
Sena Akçer ◽  
Luca Gasperini ◽  
Yosi Mart
Keyword(s):  
High Resolution ◽  
Sea Level ◽  
Late Glacial ◽  
Sea Of Marmara ◽  
Sea Level Changes ◽  
New Evidence ◽  
Holocene Sea Level
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