This work is licensed under a 
Creative Commons Attribution 4.0 International License
(CC BY 4.0)
https://creativecommons.org/licenses/by/4.0/



Licenses of software and data included in this work (information as present on websites on 15 June 2022):


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##### Surface elevation data #####
##################################
Geomorphological data for Spiekeroog was provided by the
EasyGSH-DB project
https://mdi-de.baw.de/easygsh/

The bathymetry data is licensed under a
Creative Commons Attribution 4.0 International License
(CC BY 4.0)
https://creativecommons.org/licenses/by/4.0/

License information is provided under
https://mdi-de.baw.de/easygsh/EasyEN_Imp_Daten.html#home
https://datenrepository.baw.de/trefferanzeige?cmd=doShowDocument&docuuid=590135db-1776-450d-9fe3-ac6484cf64aa&plugid=/ingrid-group:iplug-ige-datenrepo


#####################################
##### Administrative boundaries #####
#####################################
Administrative country boundaries were retrieved from the 
Eurostat website.
https://ec.europa.eu/eurostat/web/gisco/geodata/reference-data/administrative-units-statistical-units/countries

License information:
From
https://ec.europa.eu/info/legal-notice_en#copyright-notice
"Unless otherwise indicated (e.g. in individual copyright notices), 
content owned by the EU on this website is licensed under the 
Creative Commons Attribution 4.0 International (CC BY 4.0) licence. 
This means that reuse is allowed, provided appropriate credit is given 
and changes are indicated."

Additionally
https://ec.europa.eu/eurostat/web/gisco/geodata/reference-data/administrative-units-statistical-units
"In addition to the general copyright and licence policy applicable to 
the whole Eurostat website, the following specific provisions apply to 
the datasets you are downloading. The download and usage of these data 
is subject to the acceptance of the following clauses:

1) The Commission agrees to grant the non-exclusive and not transferable 
right to use and process the Eurostat/GISCO geographical data downloaded 
from this page (the "data").
 
2) The permission to use the data is granted on condition that:
 
	1) the data will not be used for commercial purposes;
	2) the source will be acknowledged. [...]"