Alongshore variation in foredune height in response to transport potential and sediment supply: South Padre Island, Texas

Houser, Chris; Mathew, Sojan

doi:10.1016/j.geomorph.2010.07.028

Cited by 82 publications

(52 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Godfrey (1977) hypothesized that barrier island orientation relative to the prevailing winds exerts a control on foredune morphology, with taller dunes occurring when winds blow directly onshore, perpendicular to the shoreline. Sediment supply has also been implicated in causing alongshore dune height variability -specifically that a geomorphic and geologic framework influences the morphology of bars, beaches and sediment supply, therefore controlling the height of coastal dunes (Houser et al, 2008;Houser and Mathew, 2011).…”

Section: Introductionmentioning

confidence: 99%

Lateral vegetation growth rates exert control on coastal foredune hummockiness and coalescing time

2017

View full text Add to dashboard Cite

Abstract. Coastal foredunes form along sandy, low-sloped coastlines and range in shape from continuous dune ridges to hummocky features, which are characterized by alongshore-variable dune crest elevations. Initially scattered dune-building plants and species that grow slowly in the lateral direction have been implicated as a cause of foredune "hummockiness". Our goal in this work is to explore how the initial configuration of vegetation and vegetation growth characteristics control the development of hummocky coastal dunes including the maximum hummockiness of a given dune field. We find that given sufficient time and absent external forcing, hummocky foredunes coalesce to form continuous dune ridges. Model results yield a predictive rule for the timescale of coalescing and the height of the coalesced dune that depends on initial plant dispersal and two parameters that control the lateral and vertical growth of vegetation, respectively. Our findings agree with previous observational and conceptual work -whether or not hummockiness will be maintained depends on the timescale of coalescing relative to the recurrence interval of high-water events that reset dune building in low areas between hummocks. Additionally, our model reproduces the observed tendency for foredunes to be hummocky along the southeast coast of the US where lateral vegetation growth rates are slower and thus coalescing times are likely longer.

show abstract

Section: Introductionmentioning

confidence: 99%

Lateral vegetation growth rates exert control on coastal foredune hummockiness and coalescing time

2017

View full text Add to dashboard Cite

show abstract

“…Houser and Mathew [2011] found that an increase in available fetch was correlated with an increase in dune height. They further state however, that the washover channels occur on the widest and lowest gradient dissipative beaches, while the largest dunes on Padre Island are "fronted by a foreshore that is relatively steep and short" (p. 70).…”

Section: Surfzone To Beach Sediment Transportmentioning

confidence: 95%

“…They thus believe that sediment availability is more important there than transport potential. It is unlikely that 2 periods of Lidar observations as obtained by Houser and Mathew [2011] are sufficient to establish relationships about modal beach states. It is true that at times more intermediate beach-backshore profiles have higher berms and therefore less moist or wet surface areas than dissipative beaches, but the Short and Hesp [1982] model shows that it is the higher mobility of these beaches that reduces the long term sediment input to dunes, something that Houser and Mathew [2011] do not consider.…”

Section: Surfzone To Beach Sediment Transportmentioning

confidence: 99%

Surfzone-beach-dune interactions

Hesp¹

2012

NCK-days 2012: Crossing Borders in Coastal Research: Jubilee Conference Proceedings

View full text Add to dashboard Cite

This paper reviews the wave-beach-dune model of beach and dune interactions formulated by Hesp [1982] for micro-tidal beaches in eastern and southern Australia, and examines additions to, and more recent research principally on that model, but also briefly examines other models based on sediment supply variations. The model contends that dissipative beaches are characterized by high wave driven sediment supply, wide, low gradient beaches, maximum fetch, maximum aeolian sediment transport, largest foredunes and largest dunefields or dune systems, while reflective beaches are the opposite (minimal wave and wind driven sediment transport, narrow steep beaches, small foredunes and limited dunefield /dune system development. Intermediate beaches display a trend from high to low transport conditions, foredune size and dunefield development with a trend from dissipative to reflective. Future research ideas are also presented.

show abstract

“…Andrle 134 (1996), however, has identified limitations of the self-similar coastline concept, suggesting that a 135 coastline may contain irregularities that are concentrated at certain characteristic length-scales 136 owing to local processes or structural controls. Recent evidence from South Padre Island, Texas 137 (Houser and Mathew, 2011), Fire Island, New York (Hapke et al, 2010), and Santa Rosa Island,138 Florida (Houser et al, 2008) suggests that the geomorphology of barrier islands is affected to 139 varying degrees by the underlying framework geology and that this geology varies, often with 140 periodicities, over multiple length-scales. The self-similarity of the framework geology and its 141 impact on the geomorphology of these barrier islands was not examined explicitly.…”

Section: Statistical Measures Of Coastline Geomorphology 129mentioning

confidence: 99%

Statistical modeling of the long-range dependent structure of barrier island framework geology and surface geomorphology

Weymer¹,

Wernette²,

Everett³

et al. 2018

Preprint

Self Cite

View full text Add to dashboard Cite

33Shorelines exhibit long-range dependence (LRD) and have been shown in some environments to 34 be described in the wavenumber domain by a power law characteristic of scale-independence. 35Recent evidence suggests that the geomorphology of barrier islands can, however, exhibit scale-36 dependence as a result of systematic variations of the underlying framework geology. The LRD of 37 framework geology, which influences island geomorphology and its response to storms and sea 38 level rise, has not been previously examined. Electromagnetic induction (EMI) surveys conducted 39 along Padre Island National Seashore (PAIS), Texas, USA, reveal that the EMI apparent 40 conductivity σa signal and, by inference, the framework geology exhibits LRD at scales up to 10

show abstract

Alongshore variation in foredune height in response to transport potential and sediment supply: South Padre Island, Texas

Cited by 82 publications

References 50 publications

Lateral vegetation growth rates exert control on coastal foredune hummockiness and coalescing time

Lateral vegetation growth rates exert control on coastal foredune hummockiness and coalescing time

Surfzone-beach-dune interactions

Statistical modeling of the long-range dependent structure of barrier island framework geology and surface geomorphology

Contact Info

Product

Resources

About