This module describes hydrography pertaining to nautical charting and navigation. It covers how nautical charts are created, who creates them, the products available, and how to find and use ... Read more »
This lesson covers the topics of geodesy, datums, map projections, and map coordinate systems. Geodesy addresses the shape of the earth: the topographic surface, geoid, and best-fit ellipsoid. Datums addresses the position and orientation or the best-fit ellipsoid and the ... Read more »
This module explores ocean acoustics, focusing on the propagation and detection of sound in the marine environment. Sound propagation strongly depends on refraction caused by variations in sound speed, and reflection off the seafloor and sea surface. Detection of sound ... Read more »
Ocean tides profoundly impact coastal maritime operations. This module provides an introduction to the origin, characteristics, and prediction of tides. After introducing common terminology, the module examines the mechanisms that cause and modify tides, including both ... Read more »
This content is not hosted on MetEd.
This series of short videos, produced in collaboration between NOAA’s National Geodetic Survey and The COMET Program, provides an introduction to geodetic datums for anyone who uses mapping products or other geo-spatial tools. 1. What are Geodetic Datums? (4:36) In ... Read more »
Aimed at scientists, engineers, modelers and other technical users of GIS/mapping applications, this lesson provides a basic understanding of different vertical datums, how they are defined, some of their strengths and weaknesses and how to choose the appropriate datum for ... Read more »