Temporal and Spatial Dynamics of Estuarine Shoreline Change in the Albemarle-Pamlico Estuarine System, North Carolina, USA

Eulie, Devon O.; Walsh, J. P.; Corbett, D. Reide; Mulligan, Ryan P.

doi:10.1007/s12237-016-0143-8

Cited by 32 publications

(25 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We used depocenters as archives of regional changes in coastal sedimentation, targeting sites where variations in those depositional, erosional, and mixing processes that form sedimentary records were generally constant through time (Supplementary Note 1). This avoids the tight coupling between intertidal sedimentation and inundation time 19 , shoreline areas and frequent reworking 20 , and river outlets and rapid regression or transgression of depositional environments 21 .…”

Section: Resultsmentioning

confidence: 99%

Coastal sedimentation across North America doubled in the 20th century despite river dams

et al. 2020

View full text Add to dashboard Cite

The proliferation of dams since 1950 promoted sediment deposition in reservoirs, which is thought to be starving the coast of sediment and decreasing the resilience of communities to storms and sea-level rise. Diminished river loads measured upstream from the coast, however, should not be assumed to propagate seaward. Here, we show that century-long records of sediment mass accumulation rates (g cm −2 yr −1) and sediment accumulation rates (cm yr −1) more than doubled after 1950 in coastal depocenters around North America. Sediment sources downstream of dams compensate for the river-sediment lost to impoundments. Sediment is accumulating in coastal depocenters at a rate that matches or exceeds relative sea-level rise, apart from rapidly subsiding Texas and Louisiana where water depths are increasing and intertidal areas are disappearing. Assuming no feedbacks, accelerating global sea-level rise will eventually surpass current sediment accumulation rates, underscoring the need for including coastal-sediment management in habitat-restoration projects.

show abstract

Section: Resultsmentioning

confidence: 99%

Coastal sedimentation across North America doubled in the 20th century despite river dams

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The results indicate that the wave-driven circulation is significantly less than the wind-driven circulation, due the relatively small waves and gentle estuarine slopes that cause very low radiation stress gradients. Although the waves are important in causing erosion of fine sediments on estuarine shorelines (Eulie et al, 2016), they have a minimal contribution to circulation in this system, the model is used to simulate the total circulation from wind, wave, tidal and river flow forcing. days for Storm B) resulted in different wave heights and current velocities at the peak of each storm ( Figure 11).…”

Section: Estuarine Surface Wavesmentioning

confidence: 99%

Modeling hydrodynamics of large lagoons: Insights from the Albemarle-Pamlico Estuarine System

Clunies

Mulligan

Mallinson

et al. 2017

Estuarine, Coastal and Shelf Science

Self Cite

View full text Add to dashboard Cite

Large estuaries are influenced by winds over adjacent coastal ocean and land areas causing significant spatial variations in water levels, currents and surface waves. In this study we apply a numerical model to simulate hydrodynamics and waves in the Albemarle-Pamlico Estuarine System, a large and shallow back-barrier basin in eastern North Carolina, over a one-month study period (September, 2008) with observations from several storm wind events of differing time scales and directions. Model performance is evaluated for a spatially varying wind field from the North American Regional Reanalysis (NARR) dataset in comparison to spatially uniform forcing from wind observations at offshore, coastal and land-based sites across the region. A spatially uniform wind field from offshore winds observations results in statistically better hydrodynamic simulations of water levels (R=0.88) in the estuaries than NARR (R=0.48) after comparison with measurements and indicates the importance of strong marine winds over most of the estuary surface area.The influence of a prominent bathymetric feature on hydrodynamics in Pamlico Sound is also investigated by numerically removing a 30 km long and 2-3 m deep shoal from the model grid and replacing it with an idealized depth of 6 m. The removal of the shoal increases water level setup by 14% at the estuarine shoreline, decreases current magnitudes by up to 40% in the shoal region and increases significant wave heights locally by up to 25% in the sound, indicating the importance of this relict geomorphic feature as a major control on the hydrodynamic response of the system during wind events.The results suggest that increasing the water depth over the shoal can lead to higher storm surges and wave heights with the possibility of increased inundation and erosion of the back-barrier and mainland coastal regions. The complex bathymetry and marine wind influence are critical input conditions for modelling large and shallow lagoonal estuaries like the Albemarle-Pamlico Estuarine System.

show abstract

“…In the case of one study, it was found to be non-significant in their model [9], but in a study of Floridian homeowners, experiencing hurricane damage was a significant factor in predicting the level of perceived risk [13].…”

Section: Survey Data Collectionmentioning

confidence: 91%

“…Coastal erosion due to human activities and wind-driven waves was also examined as part of this study. Erosion rates from 0.5 to over eight meters per year has been documented across the east coast of the United States and in the coastal zone of North Carolina [8][9][10]. The average rate of erosion for estuarine shorelines in North Carolina is about 0.5 m yr −1 while the average for some of our study area (lower Cape Fear River) is about 0.2 m yr −1 [8-10].…”

Section: Coastal Hazardsmentioning

confidence: 95%

An Integrative Approach to Assessing Property Owner Perceptions and Modeled Risk to Coastal Hazards

Hao

Eulie

Weide

2020

IJGI

View full text Add to dashboard Cite

Coastal communities are increasingly vulnerable to changes in climate and weather, as well as sea-level rise and coastal erosion. The impact of these hazards can be very costly, and not just in terms of property damage, but also in lost revenue as many coastal communities are also tourism-based economies. The goal of this study is to investigate the awareness and attitudes of full-time residents and second-home property owners regarding the impact of climate and weather on property ownership and to identify the factors that most influences these attitudes in three coastal counties (Brunswick, Currituck, and Pender) of North Carolina, USA. The majority of previous studies have focused on only full-time residents’ risk perceptions. Given the fact that these coastal communities have a high percentages of second homes, this study fills that research gap by including second-home owners. This study integrates both social (survey data) and physical (geospatial coastal hazards data) aspects of vulnerability into a single assessment to understand the determinants of property owners’ risk perceptions and compare their perceived risks with their physical vulnerability. The study also compared the utility of a global ordinary least square (OLS) model with a local geographically weighted regression (GWR) model to identify explanatory variables in the dataset. The GWR was found to be a slightly better fit for the data with an R2 of 0.248 (compared to 0.206 for the OLS). However, this was still relatively low and indicated that this study likely did not capture all of the factors that influence the perceptions of vulnerability in patterns of property ownership (whether full-time residents or second-home owners). The geospatial variables used to determine coastal vulnerability were found not to significantly impact perceptions related property ownership, but did provide additional insight in explaining spatial patterns of the response variable within each county.

show abstract

Temporal and Spatial Dynamics of Estuarine Shoreline Change in the Albemarle-Pamlico Estuarine System, North Carolina, USA

Cited by 32 publications

References 16 publications

Coastal sedimentation across North America doubled in the 20th century despite river dams

Coastal sedimentation across North America doubled in the 20th century despite river dams

Modeling hydrodynamics of large lagoons: Insights from the Albemarle-Pamlico Estuarine System

An Integrative Approach to Assessing Property Owner Perceptions and Modeled Risk to Coastal Hazards

Contact Info

Product

Resources

About