How to Use

PALTIDE is on online web-based data portal tool with intuitive user interface to enable users to visualise, interrogate and download datasets on relative sea level, palaeotidal amplitudes and other tide-dependant parameters. The model domain is the northwest European continental shelf covering the period from the Last Glacial Maximum to the present day. The tool is based on the glacial isostatic adjustment (GIA) simulations in Bradley et al. (2011) and hydrodynamic simulations using the Regional Ocean Modelling System (ROMS) published by Ward et al. (2016). A technical description of the input simulations and visualisation software is provided by Scourse et al. (in press).

On the “Explore Data Visualisations” tab, the “Maps” section enables visualisation of two-dimensional colour (raster) plots of tidal amplitude, stratification, peak bed stress and tidal current. Point-location data can be downloaded by moving the cursor and clicking on a chosen location; these data downloads are specific to the ocean model variable being viewed. Users can interrogate the maps using the “Interactive” tab and by sliding the age-scale, or can run a time-sequence animation under the “Animate” tab. A zoom function is available, and maps can be moved using click-and-grab functionality with the cursor. Further description of functionality is available in Scourse et al. (submitted).

App designed by: James Scourse, Sophie Ward
App developed by: Keaton Wilson, Jessica Guo
How to cite

Data from this tool can be freely published with citation to the following three publications:

  1. Scourse, J, Ward, S, Wainwright, A, Bradley, S, Wilson, JK and Guo, J (2024). An interactive visualization and data portal tool (PALTIDE) for relative sea level and palaeotidal simulations of the northwest European shelf seas since the Last Glacial Maximum. Journal of Quaternary Science
  2. Ward SL, Neill SP, Scourse JD, Bradley SL and Uehara K 2016. Sensitivity of palaeotidal models of the northwest European shelf seas to glacial isostatic adjustment since the Last Glacial Maximum. Quaternary Science Reviews   151 , 198-211.
  3. Bradley SL, Milne GA, Shennan I and Edwards R 2011. An improved glacial isostatic adjustment model for the British Isles. Journal of Quaternary Science   26 , 541-552.

Data Selection