Climate control on late Holocene high-energy sedimentation along coasts of the northeastern Atlantic Ocean

Poirier, Clément; Tessier, Bernadette; Chaumillon, Éric

doi:10.1016/j.palaeo.2017.07.037

Cited by 15 publications

(19 citation statements)

References 108 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The yearly longshore transport rates predicted by the bulk equations share similar trends, characterized by a predominant eastward transport, as expected, with large-magnitude fluctuations ( Figure 6). An episode of westward transport is noted in -2017. The average (1972-2017 LST CERC1 is~110 000 m 3 year À1 (Table II), relatively similar to the best estimate from the budget analysis.…”

Section: Comparison With Predictions From Bulk Equationssupporting

confidence: 70%

“…An episode of westward transport is noted in -2017. The average (1972-2017 LST CERC1 is~110 000 m 3 year À1 (Table II), relatively similar to the best estimate from the budget analysis. By contrast, the average LST CERC2 rate is approximately two times larger,~190 000 m 3 year À1 (Table II).…”

Section: Comparison With Predictions From Bulk Equationssupporting

confidence: 70%

“…Such an NAO index threshold has been reported previously in relation to large wave activity in the Gulf of Cadiz (Plomaritis et al ., ), confirming that the magnitude of longshore transport is mainly controlled by storminess. Along the western coast of Europe, modulation at multi‐decadal time scales of the longshore sediment transport by the atmospheric circulation in the north Atlantic has been evidenced at wave‐built barriers (Costas et al ., ; Poirier et al ., ). The present analysis verifies that climate variability may also affect significantly the longshore transport rates at a yearly scale.…”

Section: Lst Yearly Variabilitymentioning

confidence: 99%

See 2 more Smart Citations

A method to estimate the longshore sediment transport at ebb‐tidal deltas based on their volumetric growth: Application to the Guadiana (Spain–Portugal border)

Garel

López‐Ruiz

Ferreira

2019

Earth Surf Processes Landf

View full text Add to dashboard Cite

Current techniques assessing longshore sediment transport rates have large uncertainties, pleading for the development of alternative and complementary approaches. The present study proposes a method to estimate the decadal average rate of longshore transport at modern ebb‐tidal deltas based on a sediment budget analysis of the outer shoal growth. This transport is obtained as the balance of the other contributions to the shoal with the total sediment input rate obtained from an inverse application of the inlet reservoir model. The method is applied to the Guadiana ebb‐tidal delta, yielding an average longshore sediment transport rate (~85 000 m3 year−1) in good agreement with expectations for the region. It is exemplified that this decadal averaged rate can be used to improve longshore sediment transport expressions in order to study its variability over shorter time scales. At the Guadiana, the yearly longshore sediment transport from the improved formula ranges from ~25 000 m3 (westward) to ~245 000 m3 (eastward) and is related to the North Atlantic Oscillation index. Overall, the proposed method constitutes an alternative tool to constrain the average longshore sediment transport rate over decades in the vicinity of tidal inlets. It is applicable to ebb‐tidal deltas where the outer shoal growth (from an early to a mature stage) is well documented by bathymetric maps, and where the main transport pathways towards the outer shoal can be specified. © 2019 John Wiley & Sons, Ltd. © 2019 John Wiley & Sons, Ltd.

show abstract

Section: Comparison With Predictions From Bulk Equationssupporting

confidence: 70%

Section: Comparison With Predictions From Bulk Equationssupporting

confidence: 70%

Section: Lst Yearly Variabilitymentioning

confidence: 99%

See 1 more Smart Citation

A method to estimate the longshore sediment transport at ebb‐tidal deltas based on their volumetric growth: Application to the Guadiana (Spain–Portugal border)

Garel

López‐Ruiz

Ferreira

2019

Earth Surf Processes Landf

View full text Add to dashboard Cite

show abstract

“…Fichaut and Suanez, 2011;Hall et al, 2006;Hansom et al, 2008;Hansom and Hall, 2009;Suanez et al, 2009;Williams and Hall, 2004), Mediterranean lagoonal sequences (e.g. Abad et al, 2019;Degeai et al, 2015;Kaniewski et al, 2016;Sabatier et al, 2012Sabatier et al, , 2010 and only few works have been conducted on the French Atlantic coast (Baltzer et al, 2014;Poirier et al, 2017;Sorrel et al, 2009;Van Vliet Lanoe et al, 2014). The British Isles (e.g.…”

Section: State Of Art Of Methodological Approaches To Detect Past Stomentioning

confidence: 99%

“…Hall et al, 2006;Hansom and Hall, 2009;Williams and Hall, 2004), bay sedimentation (e.g. Baltzer et al, 2014;Poirier et al, 2017;Van Vliet Lanoe et al, 2014), dune evolution (e.g. Clarke and Rendell, 2006;Clemmensen et al, 2009;Jelgersma et al, 1995), beach ridges morphology (e.g.…”

Section: P R E -P R I N Tmentioning

confidence: 99%

Temporal approaches of historical extreme storm events based on sedimentological archives

Pouzet

Maanan

2020

Journal of African Earth Sciences

View full text Add to dashboard Cite

This paper presents the benefits of multiplying environmental indicators to better understand the impacts of past storm events on the environment. It aims to describe the methodological approaches used to reconstruct past extreme events from washover deposits, at the three main temporal scales used in scientific bibliography: i) the long timescale (Holocene, since 12 000 years BP), ii) the meso timescale (for the last millenary) and iii) the short timescale (Anthropocene, for the last centuries). This methodology is based on a "multiproxy" analysis using sedimentology, geochemistry and various methods of isotope dating. Linking these methods with other disciplines such as history, archaeology and meteorology leads us to confirm with great certainty the existence of these extreme events, and to expose their impacts on the environment and on past coastal societies. These different approaches enable us to enhance and refine our knowledge of coastal hazards, but also to apprehend possible storm influences in the context of climate change.

show abstract

Role of tidal range and coastline morphology on the evolution of two macrotidal sand spits

Tessier,

Poirier,

Fruergaard

et al. 2024

The Depositional Record

View full text Add to dashboard Cite

The present study examines the stratigraphy of two sandspits that both appeared and developed since the middle of the 17th century during the Little Ice Age. The Arçay spit is located along the macrotidal Atlantic coast in South‐West France with a maximum tidal range of 6.5 m. The Pointe du Banc in the English Channel, North‐West France, is located in a hypertidal coastal setting with a tidal range of up to 14 m. The evolution of the two spit systems has been compared using historical maps, ground penetrating radar data and facies analysis and geochronological data from sediment cores. The Pointe du Banc spit developed between 1650 and 1750 CE, in a dominant seaward direction while the main mode of construction of the Arçay spit was in a longshore direction. It is proposed that this difference relates to sediment supply and coastline morphology. At the Pointe du Banc spit, the large tidal range causes a long wind fetch and sustained aeolian sediment supply. Moreover, the spit is located at the apex of a large‐scale embayment where sediment transport from north and south converges. Combined, these factors result in a positive sediment budget and seaward shoreline progradation. At the Arçay spit, high wave obliquity results in a large littoral drift and sustained longshore spit construction. At both locations, low gradient shorefaces may have favoured a net landward‐directed sediment flux that supply sand to the foreshore.

show abstract

Climate control on late Holocene high-energy sedimentation along coasts of the northeastern Atlantic Ocean

Cited by 15 publications

References 108 publications

A method to estimate the longshore sediment transport at ebb‐tidal deltas based on their volumetric growth: Application to the Guadiana (Spain–Portugal border)

A method to estimate the longshore sediment transport at ebb‐tidal deltas based on their volumetric growth: Application to the Guadiana (Spain–Portugal border)

Temporal approaches of historical extreme storm events based on sedimentological archives

Role of tidal range and coastline morphology on the evolution of two macrotidal sand spits

Contact Info

Product

Resources

About