MAP DATA NOTICES

OpenStreetMap geographic features are provided by the OpenStreetMap contributors
under the Open Data Commons Open Database License (ODbL):
https://www.openstreetmap.org/copyright
https://opendatacommons.org/licenses/odbl/
Coastline and beach geometry used by hi-ti is approximate mapped context. It is
not a surveyed shoreline or a measured current tide waterline.

Mapzen terrain tiles are hosted as public data on Amazon S3 and assembled by the
Tilezen Joerd project from regional and global sources. They contain historical
mixed-resolution terrain, including radar surface heights and coarse bathymetry.
hi-ti samples raw terrain values and calculates local height differences. Its
optional camera-height suggestion adds an assumed 1.6 metre eye height. It does
not convert these map heights to LAT or MSL, infer the photographed water level,
or represent the result as a survey. No contributor endorses these modifications.

Dataset, encoding, source details, required credits and individual licence terms:
https://registry.opendata.aws/terrain-tiles/
https://github.com/tilezen/joerd/blob/master/docs/formats.md
https://github.com/tilezen/joerd/blob/master/docs/data-sources.md
https://github.com/tilezen/joerd/blob/master/docs/attribution.md

Terrain contributors (the actual tile's source list is shown in the map details):

ArcticDEM: derived from imagery supplied by DigitalGlobe, Inc.; research support
was supplied through National Science Foundation awards 1043681, 1559691 and
1542736. ArcticDEM is openly available without use, distribution or modification
restrictions; see the provider attribution and project terms linked above.

Australia: terrain supplied by Geoscience Australia, Commonwealth of Australia,
2017; licensed under Creative Commons Attribution 4.0 International.
https://creativecommons.org/licenses/by/4.0/

Austria: Digitales Geländemodell (DGM) from offene Daten Österreichs; Creative
Commons Attribution 3.0 Austria terms apply.
https://creativecommons.org/licenses/by/3.0/at/

Canada: includes data supplied under the Open Government Licence – Canada.
https://open.canada.ca/en/open-government-licence-canada

Europe: EU-DEM terrain derives from Copernicus information and data, financed by
the European Union. See EU-DEM attribution and reuse terms in the provider notice.

Global ocean terrain: ETOPO1 from the U.S. National Oceanic and Atmospheric
Administration (NOAA), National Centers for Environmental Information (NCEI),
NESDIS, U.S. Department of Commerce. U.S. Government material is not subject to
copyright protection in the United States. This coarse product is unsuitable
for navigation and does not resolve beach bathymetry.

Mexico: Continental relief, 2016, supplied by Instituto Nacional de Estadística
y Geografía (INEGI); the provider's free-use information terms apply.

New Zealand: Land Information New Zealand and the New Zealand Government,
Crown copyright 2011; all rights reserved subject to the Creative Commons
Attribution 3.0 New Zealand licence.
https://creativecommons.org/licenses/by/3.0/nz/

Norway: terrain credited to Kartverket; Creative Commons Attribution 4.0
International terms apply.
https://creativecommons.org/licenses/by/4.0/

United Kingdom: Environment Agency holds copyright and/or database rights,
2015; all rights reserved subject to the Open Government Licence version 3.
https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/

United States and global terrain: 3DEP/NED, GMTED2010 and SRTM are credited to
the U.S. Geological Survey (USGS). These U.S. Government datasets are supplied
as public data subject to their provider notices, disclaimers and credit terms.

The contributors' full required attribution text and linked source-specific
terms remain available at the Joerd attribution URL above. Pixel spacing and RGB
encoding precision describe storage; they do not establish vertical accuracy.