Geoid determination using an innovative, robust, and efficient algorithm – Year two

In a geographical information system, latitude, longitude, and height are commonly used to represent the location of a point on or near the Earth’s surface. The first two, called horizontal coordinates, refer to reference ellipsoid and are known as geodetic latitude (?) and longitude (?). The third coordinate, i.e. height of a point is referenced to the Geoid which is an equipotential surface (level surface) of the Earth closely approximating the mean sea level. The geoid is used as a reference surface for heights (height datum) and can be determined globally and regionally. Near-surface configuration of the Earth’s structure, e.g., tectonic plate movements, surface deformation, sea-level changes etc. are reflected in the shape of the geoid. A global geoid model, derived from satellite observations, normally cannot meet the accuracy desired for smaller regions due to omission errors and methodological complications. Determination of a regional geoid model requires a combination of gravity measurements from spaceborne, airborne and terrestrial platforms with topographical data. Sander Geophysics (SGL), is one of the international pioneer companies in collecting such data. Upon completion of the proposed project, SGL will be the first Canadian company with the capability of calculating the regional geoid for their customers.

Faculty Supervisor:

Spiros Pagiatakis

Student:

Partner:

Sander Geophysics Limited

Discipline:

Earth science

Sector:

Professional, scientific and technical services

University:

York University

Program: