A short guide to KrakenZ

Abstract

The purpose of this short guide is to provide some informations on how to use a new root finder for the Kraken normal program. This new root finder is based on winding number integrals and aims at providing a robust solution to the problem of mode detection. This is not a complete version since many changes have been made after this preliminary version but it performs well for configurations of the ocean which are not "critical". It is designed in order to be as fast as possible and can only solve problems with semi-infinite bottom. It means that KrakenZ in its present version is not adequate for the solution of coupled mode problem with a rigid bottom. Another version which will be able to solve ail the problems Kraken is able to solve is under constructio