Variable response of coastal environments of the northwestern Gulf of Mexico to sea-level rise and climate change: Implications for future change

Anderson, John B.; Wallace, Davin J.; Simms, Alexander R.; Rodriguez, Antonio B.; Milliken, Kristy T.

doi:10.1016/j.margeo.2013.12.008

Cited by 98 publications

(88 citation statements)

References 72 publications

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“…mouth bar, transverse bar, slump), and depositional environments has led to a better reconstruction of the paleo environmental setting and of the processes governing sediment deposition on geological time scales (Cosgrove et al, 2018(Cosgrove et al, , 2019Dixon, Steel, & Olariu, 2012;Johannessen & Steel, 2005;Pellegrini et al, 2017;Steckler et al, 1999). This approach has been applied successfully to: (a) ancient stratigraphic successions, where an increase in wave and storm dominance impacts deltas that build seawards across a deepening shelf (Patruno & Helland-Hansen, 2018;Porębski & Steel, 2006); and (b) modern stratigraphic successions, where the impact of eustatic and climatic changes has been analyzed on delta architecture (Anderson, Wallace, Simms, Rodriguez, & Milliken, 2014;Fanget et al, 2014;Pellegrini et al, 2015).…”

Section: Clinothem Architecture Shoreline Trajectories and Inferrementioning

confidence: 99%

Ephemeral rollover points and clinothem evolution in the modern Po Delta based on repeated bathymetric surveys

Trincardi¹,

Amorosi

Bosman

et al. 2019

Basin Research

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Reconstructions of ancient delta systems rely typically on a two‐dimensional (2D) view of prograding clinothems but may miss their three‐dimensional (3D) stratigraphic complexity which can, instead, be best documented on modern delta systems by integrating high‐resolution geophysical data, historical cartography, core data and geomorphological reconstructions offshore. We quantitatively compare three precisely positioned, high‐resolution multi‐beam bathymetry maps in the delta front and pro delta sectors (0.3 to 10 m water depth) of Po di Pila, the most active of the modern Po Delta five branches. By investigating the detailed morphology of the prograding modern Po Delta, we shed new light on the mechanisms that control the topset to foreset transition in clinothems and show the temporal and spatial complexity of a delta and its pro delta slope, under the impact of oceanographic processes. This study documents the ephemeral nature of the rollover point at the transition between sandy topset (fluvial, delta plain to mouth‐bar) and muddy seaward‐dipping foreset deposits advancing, in this case, in >20 m of water depth. Three multibeam surveys, acquired between 2013 and 2016, document the complexity in space and time of the topset and foreset regions and their related morphology, a diagnostic feature that could not be appreciated using solely 2D, even very high‐resolution, seismic profiles. In addition, the comparison of bathymetric surveys gathered with one‐year lapses shows the migration of subaqueous sand dunes on the clinothem topset, the formation of ephemeral cut‐and‐fill features at the rollover point (few m below mean sea level), the presence of collapse depressions derived by sagging of sediments and fluid expulsion (possibly induced by storm waves) on the foreset, and splays of sand likely reflecting gravity flows on the lower foreset. Though the modern Po Delta is anthropogenic in many respects, its subaqueous clinothem can be studied as a scale model for ancient clinothems that are less resolved geometrically and far less constrained chronologically.

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Section: Clinothem Architecture Shoreline Trajectories and Inferrementioning

confidence: 99%

Ephemeral rollover points and clinothem evolution in the modern Po Delta based on repeated bathymetric surveys

Trincardi¹,

Amorosi

Bosman

et al. 2019

Basin Research

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show abstract

“…Zecchin et al, 2008;Yoo et al, 2014;Mendoza et al, 2014). However, these latter studies have focused exclusively on the current offshore record with relatively few attempts being made to tie together the terrestrial and littoral components of the coastal zone (Bersezio et al, 2007;Stoker et al, 2009;Peterson et al, 2010;Twichell et al, 2010;Vanderburgh et al, 2010;Anderson et al, 2014;Cawthra et al, 2014). The partial mapping and dating of open coastline shallow shelf sediments and the complexities in correlating to onshore equivalents, posed difficulties to fully understand the global and local factors shaping and altering the shallow marine areas (Bates et al, 2007;Hampson and Storms, 2008).…”

Section: Introductionmentioning

confidence: 99%

Late-Pleistocene evolution of the continental shelf of central Israel, a case study from Hadera

et al. 2016

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“…For example, anthropogenic CO 2 plays an important part in rising ocean temperatures and seawater acidification (Beman, et al, 2011;Jenamani, 2012;Pierce et al, 2012;Gleckler et al, 2012). Massive sea reclamation in coastal regions causes dramatic changes in the coastal landscape and accelerates coastal erosion (Defeo et al, 2009;Chan et al, 2013;Anderson et al, 2014). Rapid development also accelerates regional sea level rise and new research confirms that sea level rise caused by human activity is beyond natural fluctuation (Bi et al, 2013;Hamlington et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Human impacts and changes in the coastal waters of south China

Wang

et al. 2016

Science of The Total Environment

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Variable response of coastal environments of the northwestern Gulf of Mexico to sea-level rise and climate change: Implications for future change

Cited by 98 publications

References 72 publications

Ephemeral rollover points and clinothem evolution in the modern Po Delta based on repeated bathymetric surveys

Ephemeral rollover points and clinothem evolution in the modern Po Delta based on repeated bathymetric surveys

Late-Pleistocene evolution of the continental shelf of central Israel, a case study from Hadera

Human impacts and changes in the coastal waters of south China

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