EasyGSH-DB: Tidal characteristics of the salinity (TDKS)

Motivation: The calculation and graphical representation of different tide characteristics of the salinity and advective salt transport contributes to the spatial change in the salt concentration in the water body, the variation of the salinity within a tide as well as the advective transport through the flow, separately for the ebb and flood current as well as for the entire tides, in coastal waters and estuaries. The difference between the maximum and minimum salinity occurring at a given location can take quite large values in an estuary as a result of the influence of fresh water. The salinity variation, which results as a difference from the extreme values of the salinity, is mainly determined by the product of the local horizontal salt gradient with the tide path (lag-range drifting of a water volume). This can be explained by the fact that salt is mainly transported advectively with the flow. The water passing by a place within a tide comes from different regions of origin, i.e. different bodies of water, which may have significantly different salinity values in the brackish water zones of the estuaries. For soil-scattered organisms, the salinity variation represents an essential stress factor in their natural environment (variation of osmotic pressure at varying salinity). A detailed description of the analysis modes can be found in BAWiki (http://wiki.baw.de/de/index.php/Tidekennwerte_des_Salzgehalts). Metadata: This metadata record is considered as a parent record for the specified met data sets: — EasyGSH-DB_TDKS:Average salinity quantiles per tide (1996-2015) Literature: — Hagen, R., et.al., (2019), Validation document — EasyGSH-DB — Part: Untrim-SediMorph-Unk, doi:https://doi.org/10.18451/k2_easygsh_1 — Freund, J., et.al., (2020), Surface analysis of numerical simulations from EasyGSH-DB, doi:https://doi.org/10.18451/k2_easygsh_fans_2 For the individual years, annual data sheets are available as a summary of the annual validation on the EasyGSH-DB (www.easygsh-db.org). For more information, please visit the project page of EasyGSH-DB (www.easygsh-db.org). English Download: The data for download can be found under References, where the data can be downloaded directly or via the web page redirection to the EasyGSH-DB portal. For further information, please refer to the download portal (https://mdi-de.baw.de/easygsh/EasyEN_index.html).