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OpenSeaMap is a software project collecting freely usable nautical information and geospatial data to create a worldwide nautical chart.This chart is available on the OpenSeaMap website, and can also be downloaded for use as an electronic chart for offline applications.
The GEBCO chart series was initiated in 1903 by an international group of geographers and oceanographers, under the leadership of Prince Albert I of Monaco.At that time there was an explosion of interest in the study of the natural world and this group recognized the importance of a set of maps describing the shape of the ocean floor.
A 1976 United States NOAA chart of part of Puerto Rico A nautical chart of the Warnemünde harbor shown on OpenSeaMap. A nautical chart or hydrographic chart is a graphic representation of a sea region or water body and adjacent coasts or banks.
For the small areas depicted on such maps, the differences between projections are of no practical importance. [ 30 ] Admiralty charts are issued by the UKHO for a variety of users; Standard Nautical Charts (SNCs) are issued to mariners subject to the Safety of Life at Sea (SOLAS) convention , while chart folios, at a convenient A2 size, are ...
Marine geophysics is the scientific discipline that employs methods of geophysics to study the world's ocean basins and continental margins, particularly the solid earth beneath the ocean. It shares objectives with marine geology , which uses sedimentological , paleontological , and geochemical methods.
Magnetic survey of an archaeological site Magnetic gradiometer map of Prehistoric fire-hearths A magnetic survey at Pembroke Castle carried out by Dyfed Archaeological Trust and funded by the Castle Studies Trust [1] Magnetic surveying is one of a number of methods used in archaeological geophysics. Magnetic surveys record spatial variation in ...
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Pendulums used in Mendenhall gravimeter apparatus, from 1897 scientific journal. Gravity gradiometry is the study of variations in the Earth's gravity field via measurements of the spatial gradient of gravitational acceleration.