S+SNZ Geodetic Survey Practice Questions - S+SNZ Professional Examination - Geodetic Surveying Option (New Zealand) Exam

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What is the primary difference between a static geodetic datum and the semi-dynamic New Zealand Geodetic Datum 2000 (NZGD2000)?

NZGD2000 coordinates are updated in real-time based on active receiver GPS positions. NZGD2000 coordinates are referenced to a fixed epoch of 2000.0, but incorporate a deformation model to account for plate tectonic movement over time. NZGD2000 utilizes a local ellipsoid that changes shape annually to reflect geoid variations. NZGD2000 does not allow the use of traditional terrestrial observations, requiring only space-based measurements.

Correct Answer:

NZGD2000 coordinates are referenced to a fixed epoch of 2000.0, but incorporate a deformation model to account for plate tectonic movement over time.

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