Characteristics of the Shoreline Change along Florida Sandy Beaches with an Example for Palm Beach County

Absalonsen, Luciano; Dean, Robert G.

doi:10.2112/jcoastres-d-10-00192.1

Cited by 26 publications

(15 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In an application to Narrabeen beach, Sydney, Australia, the authors concluded that the Bruun Rule was very conservative (e.g., overestimated recession), yielding estimates for the year 2100 with less than an 8% probability of exceedance. Absalonsen and Dean (2011) analyzed the long-term (about 140 years) shoreline changes on the east and west coasts of Florida. Although the focus was not the Bruun Rule, it was found that prior to beach nourishment (about 100 years of data), the average shoreline change rates on the east and west coasts of Florida were + 13 cm/yr and − 7 cm/yr, respectively.…”

Section: The Bruun Rulementioning

confidence: 99%

The modified Bruun Rule extended for landward transport

Rosati¹,

Dean²,

Walton³

2013

Marine Geology

118

109

View full text Add to dashboard Cite

a b s t r a c t a r t i c l e i n f oThe Bruun Rule (Bruun, 1954(Bruun, , 1962) provides a relationship between sea level rise and shoreline retreat, and has been widely applied by the engineering and scientific communities to interpret shoreline changes and to plan for possible future increases in sea level rise rates. The Bruun Rule assumes that all sand removed from the upper profile is deposited offshore as sea level rises, although overwash during storms and landward Aeolian transport clearly indicate otherwise. Herein, we examine processes associated with sandy beach evolution in response to relative sea level rise and propose a modified form of the Bruun Rule that considers the full range of parsing cross-shore transport, from completely seaward to completely landward depending on the prevailing storm and surge conditions and whether there is a surplus or deficit of sand in the profile with respect to the equilibrium beach profile. A methodology is proposed that more appropriately represents the long-term processes and beach response. However, an improved quantitative understanding of landward transport is required for optimal application of the proposed method.Published by Elsevier B.V.

show abstract

Section: The Bruun Rulementioning

confidence: 99%

The modified Bruun Rule extended for landward transport

Rosati¹,

Dean²,

Walton³

2013

Marine Geology

118

109

View full text Add to dashboard Cite

show abstract

“…Shorelines erode principally by natural imprints like coastal storms, sudden weather-related events, sea level rise, changes in sediment supply, and human imprints/ modifications like beach nourishment, engineering structures (e.g., Absalonsen & Dean, 2011;Dickson et al, 2007;Nicholls & Cazenave, 2010;Woodroffe & Murray-Wallace, 2012). The consequence of human activities on rates of shoreline migration encourages beach erosion.…”

Section: Anthropogenic Influences and Consequencesmentioning

confidence: 99%

“…The inability to understand and predict shoreline variability can result in the misinterpretation of coastal change scenarios, and affect (directly or indirectly) decision-making and subsequent design of intervention plans (Stive et al, 2002). So far, the variability in shoreline position remains a reliable proxy to describe the overall coastal or beach changes (Absalonsen & Dean, 2011;Bouvier et al, 2017;Oyedotun, 2016Oyedotun, , 2017. Shoreline dynamicity/variability has often been used to study coastal changes at short (days to seasons, e.g., Pearre & Puleo, 2009;Stive et al, 2002) or long (decades to centuries, e.g., Harley, Turner, Short, & Ranasinghe, 2010;Goble & MacKay, 2013) timescales.…”

Section: Introductionmentioning

confidence: 99%

Contemporary shoreline changes and consequences at a tropical coastal domain

Oyedotun

Ruiz‐Luna

Navarro-Hernández

2018

Geology, Ecology, and Landscapes

View full text Add to dashboard Cite

Faculty of earth and environmental sciences, leslie cummins Building, University of Guyana, Turkeyen campus, Georgetown, Guyana ABSTRACT Coastal environment is affected by diverse human and natural activities, more than any other natural environment. The main aim of this study is to examine shoreline dynamics of the sandy beach of Mazatlán, a medium-sized tropical coastal city in north-west Mexico. This paper specifically investigates the shoreline change as impacted by natural and anthropogenic interferences on the Mazatlán coastline. The mean high water (MHW) shoreline positions were extracted from Landsat Images (2012-2016) and a 2016 GPS field survey data. Digital Shoreline Analysis System (DSAS) was then used to investigate the dynamics of the extracted shoreline movements and the relative changes. Results showed that 96% of the coastline is undergoing yearly small-scale erosion at two distinct rates. The first at −1.9 ± 0.9 m year −1 and the other at −1.4 ± 0.2 m year −1 , which are noted at Cerritos and other sections of the coastline, respectively. Changes in the coastal behaviour, here, are attributed widely to suspected sea level rise; increasing tidal range in the region; and the lack of or inadequate accommodation space for sediment movement occasioned by landed assets alongshore. These factors are not only encouraging erosion but also causing the depreciation of landward assets.

show abstract

“…Overall, average rates of shoreline change were approximately zero between the mid-1800s and the 1970s, even though net change along the islands ranged from 9 m (30 ft) of erosion to 9 m (30 ft) of deposition. Between the 1970s and 2000s, beach nourishment was an integral component of beach management along the islands, and net deposition prevailed at an average rate of about 0.9 m/year (3.0 ft/year) (Figure 6.36) (data from Absalonsen and Dean 2011). Although beach erosion hot spots are common along the islands and beach nourishment has been successful at mitigating erosion, Davis (2011b) indicates that natural accretion has occurred in several places along the islands.…”

Section: Central West Florida Barrier Islandsmentioning

confidence: 99%

“…Overall, net shoreline recession of À0.1 m/year (À0.3 ft/year) was recorded for this 300-km (186-mi) coastal segment. Between the 1970s/1980s and 2000s, sand nourishment was imposed along a number of beaches (FDEP 2008), contributing to a shift in net shoreline change to 0.1 m/ year (0.3 ft/year) (Absalonsen and Dean 2011) (Figure 6.44).…”

Section: Ms (mentioning

confidence: 99%