Coastal Design Tools

Oral

1610 - Quantifying Beach And Dune Resilience Using The Coastal Resilience Index

Presenting Author(s)

• ZD

  Zhifei Dong, PhD

  Coastal Engineer
  APTIM

Additional Author #1(s)

• NE

  Nicole Elko

  American Shore & Beach Preservation Association

Additional Author #2(s)

• QR

  Quin Robertson

  APTIM

Additional Author #3(s)

• 

  Julie Rosati, PhD, PE

  Technical Director
  U.S. Army Corps of Engineers

Coastal Resilience Index (CRI) considers the beach and dune system (infrastructure) and disturbance factors such as storm surge and waves. An automated tool was developed that extracts morphologic features from a beach and dune system that provides the metrics for the CRI such as landward limit of dune, dune crest, dune toe, shoreline, and mean beach slope. Parameters that are calculated include shoreline position (MHW), protective width (PW), protective elevation (PE), beach volume density (VD), dune crest elevation (DE) and crest freeboard (CF). CRI considers maximum storm-induced shoreline recession (MR), maximum storm surge (MS) and calculates wave runup (WR).