where is the wgs84 datum used for measurements
Geodetic datum The Global Positioning System (GPS) uses the World Geodetic System 1984 (WGS 84) to determine the location of a point near the surface of the Earth.
Limit of a function (the Dirichlet function) has no limit at any x-coordinate.
Alonso Álvarez de Pineda
Backshore Sediments in this area are well-sorted and well-rounded. Its grain sizes are mainly coarse sand and medium sand, which are larger than that in littoral barrier dune.The sedimentary structures include parallel bedding and low-angle cross-bedding.