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Modern Theory and Practice of Tide Analysis and Tidal Power

The Oceanography of Tidesby Prof Zygmunt Kowalik and Dr John Luick

Chapter I: Tidal forces
Chapter II: Basic equations
Chapter III: Tidal currents
Chapter IV: Tide distribution and tidal power
Chapter V: Physical characteristics of tides. Tide analysis and prediction
Chapter VI: Tidal Terminology

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Free, fast, powerful tool for constructing computational grids for ROMS (Regional Ocean Modelling System) by Dr Charles James. GridBuilder replaces the venerable Seagrid software by Charles R. Denham. The executable does not have all the latest bells and whistles, but should work fine on Windows (no need for Matlab).

Download GridBuilder.exe version 0.99.5 August 2016

The “INSTRUCTIONS” pdf (below) was written for the 2016 version. It is mostly redundant for those downloading GridBuilder.mltbx version 1.2.3, which has a “Reference Guide” in the Help menu.

Download INSTRUCTIONS file (PDF)

This is a Matlab toolbox that should install and work with versions of Matlab 2014b and above. You will need Matlab to run GridBuilder this way. It has been developed and tested on Windows 7 and 10 but should work on any platform that can run a compatible version of Matlab. Installing the toolbox will install all code and data files and help documentation required to run GridBuilder. To install the toolbox double click on the GridBuilder.mltbx file from within Matlab.

Download GridBuilder_toolbox.mltbx version 1.2.5, April 18 2020

Global Warming Info

  • The climate is heading for a tipping point that could make the planet uninhabitable.
  • It could cause temperatures up to 5C higher than pre-industrial averages, and rises of sea level of between 10 and 60 metres.
  • Current global efforts to curb emissions are "unlikely" to prevent the dangerous situation.

Download Steffen et al PNAS 2018 (PDF)

How to transfer a vertical datum between islands or coast and island

Let’s say we want to compare the vertical level of an island benchmark with an onshore benchmark which has been levelled into a national datum. There are a number of ways this can be done. Here I discuss three of them.

Download Austides Island Datum Transfer

TPXO to ROMS Express v. 5.1

This Matlab function prepares a ROMS forcing file directly from the Oregon State TPXO global tidal model. ROMS is a hydrodynamic model primarily designed for coastal shelves, estuaries, and regional seas. This new version of TPXO2ROMS (TPXO2ROMSv5pt1) reads from the new TPXO 9 atlas. TPXO 9 has various improvements, including the tidal harmonic 2N2 and the meteorological harmonic S1 (which I omit due to its unsteady barometric origin). You will need permission to download the TPXO9 netcdf files this software reads from (see volkov.oce.orst.edu/tides/otps.html). In the unlikely event (ahem) anyone finds any errors please inform me so I can update the software accordingly.

Download TPXO v 5.1

Australian Tidal Handbook

Australian Tidal HandbookI wrote this handbook in 2004 under contract to the National Tidal Centre (Bureau of Meteorology). It is now out of date, with the most important contents merged into Modern Theory and Practice of Tide Analysis and Tidal Power. It contains some tables of tidal parameters that are still useful and accurate.

Download AustTidal Handbook