Exploring the influence of bay morphology during coastal barrier retreat

I am excited to present collaborative work with Rice Sedimentology and Rose Palermo at AGU 2018! During sea-level rise, coastal barriers (islands and peninsulas) are  thought to respond by retreating landward. However, bay accommodation may (1) vary in bay depth (ΔDb) (2) be subjected to variation in rates of RSLR (relative sea-level rise, ΔRSLR), or (3) both bay depth and rates of RSLR may vary (ΔDb & ΔRSLR). Variable bay morphology may drive alongshore changes in retreat rate, generating shoreline curvature, and modifying longshore transport.  The videos below are a supplement for our 2018 AGU poster, which is available as a PDF.

Barrier retreat (3D view):

(1) ΔDb with uniform RSLR

Med. case (6.1 mm yr-1 RSLR, 61 m2 yr-1 )

Click on the embedded links to view Low Case (2.9 mm yr-1 RSLR, 29 m2 yr-1 Qowmax) and  High Case (10 mm yr-1 RSLR, 100 m2 yr-1 Qowmax) cases.

(2) ΔRSLR with uniform Db

Med. case (6.1 mm yr-1 RSLR, 61 m2 yr-1 )

Click on the embedded links to view Low Case (2.9 mm yr-1 RSLR, 29 m2 yr-1 Qowmax) and  High Case (10 mm yr-1 RSLR, 100 m2 yr-1 Qowmax) cases.

(3) ΔDb & ΔRSLR

Med. case (6.1 mm yr-1 RSLR, 61 m2 yr-1 )

Click on the embedded links to view Low Case (2.9 mm yr-1 RSLR, 29 m2 yr-1 Qowmax) and  High Case (10 mm yr-1 RSLR, 100 m2 yr-1 Qowmax) cases.

Shoreline behavior (2D view):

(1) Alongshore variation in bay depth (ΔDb) with uniform RSLR

Med. case (6.1 mm yr-1 RSLR, 61 m2 yr-1 )

Click on the embedded links to view Low Case (2.9 mm yr-1 RSLR, 29 m2 yr-1 Qowmax) and  High Case (10 mm yr-1 RSLR, 100 m2 yr-1 Qowmax) cases.

(2) Alongshore variation in relative sea-level rise (ΔRSLR) with uniform

Med. case (6.1 mm yr-1 RSLR, 61 m2 yr-1 )

Click on the embedded links to view Low Case (2.9 mm yr-1 RSLR, 29 m2 yr-1 Qowmax) and  High Case (10 mm yr-1 RSLR, 100 m2 yr-1 Qowmax) cases.

(3) ΔDb & ΔRSLR

Med. case (6.1 mm yr-1 RSLR, 61 m2 yr-1 )

Click on the embedded links to view Low Case (2.9 mm yr-1 RSLR, 29 m2 yr-1 Qowmax) and  High Case (10 mm yr-1 RSLR, 100 m2 yr-1 Qowmax) cases.

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