Open AccessMODEL FOR PREDICTING FORMATION OF BLOWOUT ON COASTAL SAND DUNE USING CELLULAR AUTOMATON METHOD
Author(s) -
Takuya Yokota,
Akio Kobayashi,
Takaaki Uda,
Masumi Serizawa,
Akio Katsuki,
Yasuhito Noshi
Publication year - 2018
Publication title -
proceedings of conference on coastal engineering/proceedings of ... conference on coastal engineering
Language(s) - English
Resource type - Journals
eISSN - 2156-1028
pISSN - 0589-087X
DOI - 10.9753/icce.v36.papers.40
Subject(s) - geology , cellular automaton , marine engineering , geotechnical engineering , engineering , computer science , algorithm
On a sand dune, a blowout is often formed owing to wind effect. The formation of a blowout was observed on November 25, 2016 at the Node coast facing the Pacific Ocean, where a blowout has been formed to leave a concave topography. Then, a model for predicting the formation of a blowout was developed using a cellular automaton method, in which two important factors of saltation and avalanche were taken into account. The results of the numerical simulation were compared with the measured results on the Node coast, and the predicted and measured shapes of the blowout were in good agreement. Also, it was found that the direction of the beach access must be extended in the direction normal to the direction of prevailing wind to prevent blowout formation.